Miniature boilers must meet the requirements in PMB-1 through PMB-
21 of Section I of the ASME BPVC (incorporated by reference; see Sec.
52.01-1).
0
60. Revise Sec.  52.25-7 to read as follows:

Sec.  52.25-7  Electric boilers (modifies PEB-1 through PEB-19).

    Electric boilers required to comply with this part must meet the
requirements in PEB-1 through PEB-19 except PEB-3 of Section I of the
ASME BPVC (incorporated by reference; see Sec.  52.01-1).
0
61. Revise Sec.  52.25-10 to read as follows:

Sec.  52.25-10  Organic fluid vaporizer generators (modifies PVG-1
through PVG-12).

    (a) Organic fluid vaporizers must meet the requirements of PVG-1
through PVG-12 of Section I of the ASME BPVC (incorporated by
reference; see Sec.  52.01-1).
    (b) The Commandant must approve the application and end use of
organic fluid vaporizer generators.

Sec.  52.25-15  [Amended]

0
62. In Sec.  52.25-15(a), remove the word ``shall'' and add, in its
place, the word ``must''.

PART 53--HEATING BOILERS

0
63. The authority citation for part 53 continues to read as follows:

    Authority: 46 U.S.C. 3306, 3703; E.O. 12234, 45 FR 58801, 3 CFR,
1980 Comp., p. 277; Department of Homeland Security Delegation No.
0170.1.

0
64. Revise Sec.  53.01-1 to read as follows:

Sec.  53.01-1  Incorporation by reference.

    Certain material is incorporated by reference into this part with
the approval of the Director of the Federal Register under 5 U.S.C.
552(a) and 1 CFR part 51. To enforce any edition other than that
specified in this section, the Coast Guard must publish a document in
the Federal Register and the material must be available to the public.
All approved material is available for inspection at the Coast Guard
Headquarters. Contact Commandant (CG-ENG), Attn: Office of Design and
Engineering Standards, U.S. Coast Guard Stop 7509, 2703 Martin Luther
King Jr. Avenue SE, Washington, DC 20593-7509, phone<PHONE_NUMBER>,
email [email protected], and is available from the sources listed
elsewhere in this section. It is also available for inspection at the
National Archives and Records Administration (NARA). For information on
the availability of this material at NARA, email [email protected]
or go to www.archives.gov/federal-register/cfr/ibr-locations.html.
    (a) American Society of Mechanical Engineers (ASME), Two Park
Avenue, New York, NY 10016-5990,<PHONE_NUMBER>, www.asme.org.
    (1) ASME Boiler and Pressure Vessel Code, Section I, Rules for
Construction of Power Boilers (2019) (``Section I of the ASME BPVC'');
IBR approved for Sec.  53.01-10.
    (2) ASME Boiler and Pressure Vessel Code, Section IV, Rules for
Construction of Heating Boilers (2019) (``Section IV of the ASME
BPVC''); IBR approved for Sec. Sec.  53.01-3, 53.01-5, 53.01-10, 53.05-
1, 53.05-2, 53.05-3, 53.05-5, 53.10-1, 53.10-3, 53.10-10, 53.10-15,
53.12-1.
    (b) Underwriters Laboratories Inc., 333 Pfingston Road, Northbrook,
IL 60062-2096; www.ul.com.
    (1) UL 174, Standard for Safety, Household Electric Storage Tank
Water Heaters, Eleventh Edition, April 29, 2004 (reapproved in 2016)
(''UL 174''); IBR approved for Sec.  53.01-10.
    (2) UL 1453, Standard for Safety, Electric Booster and Commercial
Storage Tank Water Heaters, Sixth Edition, March 29, 2016 (``UL
1453''); IBR approved for Sec.  53.01-10.
0
65. Amend Sec.  53.01-3 as follows:

0
a. Revise the section heading and paragraph (a);
0
b. In paragraph (b), remove the words ``Boiler and Pressure Code''
wherever they appear and add, in their place, the text ``BPVC''; and
0
c. In paragraph (c), remove the text ``section IV of the ASME Boiler
and Pressure Code'' and add, in its place, the text ``Section IV of the
ASME BPVC''.
    The revisions read as follows:

Sec.  53.01-3  Adoption of Section IV of the ASME BPVC.

    (a) Heating boilers must be designed, constructed, inspected,
tested, and stamped in accordance with Section IV of the ASME BPVC
(incorporated by reference; see Sec.  53.01-1) as limited, modified, or
replaced by specific requirements in this part. The provisions in the
appendices to Section IV of the ASME BPVC are adopted and must be
followed when the requirements in Section IV make them mandatory. For
general information, table Sec.  53.01-3(a) lists the various
paragraphs in Section IV of the ASME BPVC that are limited, modified,
or replaced by regulations in this part.

 Table Sec.   53.01-3(a)--Limitations and Modifications in the Adoption
                     of Section IV of the ASME BPVC
------------------------------------------------------------------------
      Paragraphs in Section IV of the ASME BPVC and        Unit of this
                       disposition                             part
------------------------------------------------------------------------
HG-100 modified by......................................      53.01-5(b)
HG-101 replaced by......................................        53.01-10
HG-400 modified by......................................         53.05-1
HG-400.2 modified by....................................         53.05-2
HG-401 modified by......................................         53.05-1
HG-401.2 modified by....................................         53.05-3
HG-500 through HG-540 modified by.......................         53.10-3
HG-600 through HG-640 modified by.......................         53.12-1
------------------------------------------------------------------------

    Note 1 to table Sec.  53.01-3(a): The references to specific
provisions in Section IV of the ASME BPVC are coded. The first letter,
such as ``H,'' refers to Section IV. The second letter, such as ``G,''
refers to a part or subpart in Section IV. The number following the
letters refers to the paragraph so numbered in the text of the part or
subpart in Section IV.
* * * * *
0
66. Revise Sec.  53.01-5 to read as follows:

Sec.  53.01-5  Scope (modifies HG-100).

    (a) The regulations in this part apply to steam heating boilers,
hot water boilers (which include hot water heating boilers and hot
water supply boilers), and to appurtenances thereto. The requirements
in this part must be used in conjunction with section IV of the ASME
BPVC (incorporated by reference; see Sec.  53.01-1). Table 1 to Sec.
54.01-5 of this subchapter gives a breakdown by parts in this
subchapter of the regulations governing various types of pressure
vessels and boilers.
    (b) (Modifies HG-100.) The requirements of part HG of section IV of
the ASME BPVC must be used except as noted otherwise in this part.
0
67. Amend Sec.  53.01-10 as follows:
0
a. Revise paragraph (a);
0
b. In paragraph (b), remove the word ``shall'' wherever it appears and
add, in its place, the word ``must'';
0
c. In paragraph (c)(1), remove the words ``46 CFR'' and add, in their
place, the symbol ``Sec.  '';
0
d. In paragraph (c)(2), remove the words ``shall not be'' and add, in
their place, the words ``are not''; and
0
e. Revise paragraph (d), the introductory text to paragraph (e), and
paragraph (e)(1).
    The revisions read as follows:

Sec.  53.01-10  Service restrictions and exceptions (replaces HG-101).

    (a) General. The service restrictions and exceptions must be as
indicated in this section in lieu of the requirements of HG-101 of
Section IV of the ASME BPVC (incorporated by reference; see Sec.
53.01-1).
* * * * *
    (d) Exhaust gas boilers. Exhaust gas type boilers must be
restricted to a working pressure equal to or less than 103 kPa gage (15
psig) and an operating temperature equal to or less than 454 [deg]C
(850 [deg]F). The design temperature of parts exposed to the exhaust
gas must be the maximum temperature that could normally be produced by
the source of exhaust gas. This temperature must be verified by testing
or by the manufacturer of the engine or other equipment producing the
exhaust.
    (e) ASME BPVC Section I. Heating boilers whose operating conditions
are within the service restrictions of paragraph (b)(1) of this section
may be constructed in accordance with Section I of the ASME BPVC
(incorporated by reference; see Sec.  53.01-1). In addition, these
heating boilers must:
    (1) Be stamped with the appropriate ASME symbol in accordance with
Section I of the ASME BPVC;
* * * * *

Sec.  53.05-1  [Amended]

0
68. Amend Sec.  53.05-1(a) as follows:
0
a. Remove the text ``section IV of the ASME Boiler and Pressure Vessel
Code'' and add, in its place, the text ``Section IV of the ASME BPVC'';
and
0
b. Remove the text ``46 CFR'' and add, in its place, the symbol ``Sec.
''.

Sec.  53.05-2   [Amended]

0
69. Amend Sec.  53.05-2(a) as follows:
0
a. Remove the text ``section IV of the ASME Boiler and Pressure Vessel
Code'' and add, in its place, the text ``Section IV of the ASME BPVC'';
and
0
b. Remove the text ``46 CFR'' and add, in its place, the symbol ``Sec.
''.

Sec.  53.05-3  [Amended]

0
70. Amend Sec.  53.05-3 as follows:
0
a. Remove the text ``section IV of the ASME Boiler and Pressure Vessel
Code'' and add, in its place, the text ``Section IV of the ASME BPVC'';
and
0
b. Remove the text ``46 CFR'' and add, in its place, the symbol ``Sec.
''.

Sec.  53.05-5   [Amended]

0
71. Amend Sec.  53.05-5 as follows:
0
a. Remove the text ``section IV of the ASME Boiler and Pressure Vessel
Code'' and add, in its place, the text ``Section IV of the ASME BPVC'';
and
0
b. Remove the text ``46 CFR'' and add, in its place, the symbol ``Sec.
''.
0
72. Revise Sec.  53.10-1 to read as follows:

Sec.  53.10-1   General

    The tests, inspection, stamping, and reporting of heating boilers
must be as indicated in article 5, part HG of Section IV of the ASME
BPVC (incorporated by reference; see Sec.  53.01-1) except as noted
otherwise in this subpart.
0
73. Amend Sec.  53.10-3 by revising paragraph (a) to read as follows:

Sec.  53.10-3   Inspection and tests (modifies HG-500 through HG-540).

    (a) The inspections required by HG-500 through HG-540 must be
performed by the ``Authorized Inspector'' as defined in HG-515 of
Section IV of the ASME BPVC (incorporated by reference; see Sec.
53.01-1). The Authorized Inspector must hold a valid commission issued
by the National Board of Boiler and Pressure Vessel Inspectors. After
installation, heating boilers must be inspected for compliance with
this part by a marine inspector.
* * * * *
0
74. Revise Sec.  53.10-10 to read as follows:

Sec.  53.10-10  Certification by stamping.

    Stamping of heating boilers must be as indicated in HG-530 of
Section IV of the ASME BPVC (incorporated by reference; see Sec.
53.01-1).
0
75. Revise Sec.  53.10-15 to read as follows:

Sec.  53.10-15  Manufacturer's data report forms.

    The manufacturer's data report forms required by HG-520 of Section
IV of the ASME BPVC (incorporated by reference; see Sec.  53.01-1) must
be made available to the marine inspector for review. The Authorized
Inspector's National Board commission number must be included on the
manufacturer's data report forms.
0
76. Amend Sec.  53.12-1 as follows:
0
a. Revise paragraph (a); and
0
b. In paragraph (b), remove the word ``shall'' and add, in its place,
the word ``must''.
    The revision reads as follows:

Sec.  53.12-1   General (modifies HG-600 through HG-640).

    (a) The instruments, fittings and controls for heating boilers must
be as indicated in HG-600 through HG-640 of Section IV of the ASME BPVC
(incorporated by reference; see Sec.  53.01-1) except as noted
otherwise in this section.
* * * * *

PART 54--PRESSURE VESSELS

0
77. The authority citation for part 54 continues to read as follows:

    Authority: 33 U.S.C. 1509; 43 U.S.C. 1333; 46 U.S.C. 3306, 3703;
E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; Department of
Homeland Security Delegation No. 0170.1.

0
78. Revise Sec.  54.01-1 to read as follows:

Sec.  54.01-1  Incorporation by reference.

    Certain material is incorporated by reference into this part with
the approval of the Director of the Federal Register under 5 U.S.C.
552(a) and 1 CFR part 51. To enforce any edition other than that
specified in this section, the Coast Guard must publish a document in
the Federal Register and the material must be available to the public.
All approved material is available for inspection at the Coast Guard
Headquarters. Contact Commandant (CG-ENG), Attn: Office of Design and
Engineering Standards, U.S. Coast Guard Stop 7509, 2703 Martin Luther
King Jr. Avenue SE, Washington, DC 20593-7509, phone<PHONE_NUMBER>,
email [email protected], and is available from the sources listed
elsewhere in this section. It is also available for inspection at the
National Archives and Records Administration (NARA). For information on
the availability of this material at NARA, email [email protected]
or go to www.archives.gov/federal-register/cfr/ibr-locations.html.
    (a) American Society of Mechanical Engineers (ASME), Two Park
Avenue, New York, NY 10016-5990,<PHONE_NUMBER>, www.asme.org.
    (1) ASME Boiler and Pressure Vessel Code, Section VIII, Division 1,
Rules for Construction of Pressure Vessels (2019) (``Section VIII of
the ASME BPVC''); IBR approved for Sec. Sec.  54.01-2, 54.01-5, 54.01-
18, 54.01-25, 54.01-30, 54.01-35, 54.03-1, 54.05-1, 54.10-1, 54.10-3,
54.10-5, 54.10-10, 54.10-15, 54.15-1, 54.15-5, 54.15-10, 54.15-13,
54.20-1, 54.20-3, 54.25-1, 54.25-3, 54.25-8, 54.25-10, 54.25-15, 54.25-
20, 54.30-3, 54.30-5, 54.30-10.
    (2) [Reserved]
    (b) ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West
Conshohocken, PA 19428-2959,<PHONE_NUMBER>, www.astm.org.
    (1) ASTM A20/A20M-19, Standard Specification for General
Requirements for Steel Plates for Pressure Vessels, December 4, 2019
(``ASTM A20/A20M''); IBR approved for Sec. Sec.  54.05-10, 54.25-10.
    (2) ASTM A203/A203M-17, Standard Specification for Pressure Vessel
Plates, Alloy Steel, Nickel, November 1, 2017 (``ASTM A203/A203M'');
IBR approved for Sec.  54.05-20.
    (3) ASTM A370-19, Standard Test Methods and Definitions for
Mechanical Testing of Steel Products, July 1, 2019 (``ASTM A370''); IBR
approved for Sec.  54.25-20.
    (4) ASTM E23-18, Standard Test Methods for Notched Bar Impact
Testing of Metallic Materials, June 1, 2018 (``ASTM E23''); IBR
approved for Sec.  54.05-5, and
    (5) ASTM E208-19, Standard Test Method for Conducting Drop-Weight
Test to Determine Nil-Ductility Transition Temperature of Ferritic
Steel, October 1, 2019 (``ASTM E208''); IBR approved for Sec.  54.05-5.
    (c) Compressed Gas Association (CGA), 14501 George Carter Way,
Chantilly, VA 20151, www.cganet.com.
    (1) CGA S-1.2-2009, Pressure Relief Device Standards--Part 2--
Portable Containers for Compressed Gases, Ninth Edition, January 1,
2009 (``CGA S-1.2''); IBR approved for Sec.  54.15-10.
    (2) [Reserved]
    (d) Manufacturers Standardization Society of the Valve and Fittings
Industry, Inc. (MSS), 127 Park Street NE, Vienna, VA 22180-4602; 703-
281-6613; www.msshq.org.
    (1) ANSI/MSS SP-25-2018, Standard Marking System for Valves,
Fittings, Flanges and Unions, March, 2018 (``MSS SP-25''); IBR approved
for Sec.  54.01-25.
    (2) [Reserved]
0
79. Amend Sec.  54.01-2 as follows:
0
a. Revise the section heading and paragraphs (a) and (b); and
0
b. In paragraph (c), remove the text ``section VIII of the ASME Boiler
and Pressure Vessel Code'' and add, in its place, the text ``Section
VIII of the ASME BPVC''.
    The revisions read as follows:

Sec.  54.01-2  Adoption of Division 1 of Section VIII of the ASME BPVC.

    (a) Pressure vessels must be designed, constructed, and inspected
in accordance with Section VIII of the ASME BPVC (incorporated by
reference, see Sec.  54.01-1), as limited, modified, or replaced by
specific requirements in this part. The provisions in the appendices to
Section VIII of the ASME BPVC are adopted and must be followed when the
requirements in Section VIII make them mandatory. For general
information, table Sec.  54.01-2(a) lists the various paragraphs in
Section VIII of the ASME BPVC that are limited, modified, or replaced
by regulations in this part.

 Table Sec.   54.01-2(a)--Limitations and Modifications in the Adoption
                    of Section VIII of the ASME BPVC
------------------------------------------------------------------------
 Paragraphs in Section VIII of the ASME BPVC and
                   disposition                       Unit of this part
------------------------------------------------------------------------
U-1 and U-2 modified by.........................  54.01-5 through 54.01-
                                                   15.
U-1(c) replaced by..............................  54.01-5.
U-1(d) replaced by..............................  54.01-5(a) and 54.01-
                                                   15.
U-1(g) modified by..............................  54.01-10.
U-1(c)(2) modified by...........................  54.01-15.
UG-11 modified by...............................  54.01-25.
UG-22 modified by...............................  54.01-30.
UG-25 modified by...............................  54.01-35.
UG-28 modified by...............................  54.01-40.
UG-84 replaced by...............................  54.05-1.

UG-90 and UG-91 replaced by.....................  54.10-3.
UG-92 through UG-103 modified by................  54.10-1 through 54.10-
                                                   15.
UG-98 reproduced by.............................  54.10-5.
UG-115 through UG-120 modified by...............  54.10-1.
UG-116, except (j), replaced by.................  54.10-20(a).
UG-116(j) replaced by...........................  54.10-20(b).
UG-117 replaced by..............................  54.10-20(c).
UG-118 replaced by..............................  54.10-20(a).
UG-119 modified by..............................  54.10-20(d).
UG-120 modified by..............................  54.10-25.
UG-125 through UG-137 modified by...............  54.15-1 through 54.15-
                                                   15.
UW-1 through UW-65 modified by..................  54.20-1.
UW-2(a) replaced by.............................  54.01-5(b) and 54.20-
                                                   2.
UW-2(b) replaced by.............................  54.01-5(b) and 54.20-
                                                   2.
UW-9, UW-11(a), UW-13, and UW-16 modified by....  54.20-3.
UW-11(a) modified by............................  54.25-8.
UW-26, UW-27, UW-28, UW-29, UW-47, and UW-48      54.20-5.
 modified by.
UB-1 modified by................................  54.23-1
UB-2 modified by................................  52.01-95(d) and 56.30-
                                                   30(b)(1).
UCS-6 modified by...............................  54.25-3.
UCS-56 modified by..............................  54.25-7.
UCS-57, UNF-57, UHA-33, and UHT-57 modified by..  54.25-8.
UCS-65 through UCS-67 replaced by...............  54.25-10.
UHA-23(b) and UHA-51 modified by................  54.25-15.
UHT-5(c), UHT-6, and UHT-23 modified by.........  54.25-20.
UHT-82 modified by..............................  54.25-20 and 54.25-25.
Appendix 3 modified by..........................  54.15-3.
------------------------------------------------------------------------

    Note 1 to table Sec.  54.01-2(a): The references to specific
provisions in Section VIII of the ASME BPVC are coded. The first
letter, such as ``U,'' refers to Division 1 of Section VIII. The second
letter, such as ``G,'' refers to a subsection within Section VIII. The
number refers to the paragraph within the subsection.
    (b) References to the ASME BPVC, such as paragraph UG-125,
indicate:
    U = Division 1 of Section VIII of the ASME BPVC.
    G = Part containing general requirements.
    125 = Paragraph within part.
* * * * *

Sec.  54.01-5   [Amended]

0
80. Amend Sec.  54.01-5 as follows:
0
a. In paragraph (a), remove the text ``table 54.01-5(a)'' and add, in
its place, the text ``table 1 to Sec.  54.01-5'';
0
b. In paragraph (b), remove the text ``table 54.01-5(b)'' and add, in
its place, the text ``table 2 to Sec.  54.01-5'';
0
c. In paragraph (c)(3):
0
i. Remove the text ``division 1, of the ASME Boiler and Pressure Vessel
Code'' and add, in its place, the text ``Division 1, of the ASME
BPVC''; and
0
ii. Remove the text ``46 CFR'' and add, in its place, the symbol
``Sec.  '';
0
d. In paragraph (d)(5), remove the text ``table 54.01-5(b)'' and add,
in its place, the text ``table 2 to Sec.  54.01-5'';
0
e. In paragraph (e), remove the text ``section VIII, division 1, of the
ASME Boiler and Pressure Vessel Code'' and add, in its place, the text
``Section VIII, Division 1, of the ASME BPVC'';
0
f. Redesignate table 54.01-5(a) as table 1 to Sec.  54.01-5 and table
54.01-5(b) as table 2 to Sec.  54.01-5; and
0
g. In newly redesignated table 2 to Sec.  54.01-5:
0
i. Remove the text ``table 54.01-5(b)'' and add, in its place, the text
``table 2 to Sec.  54.01-5'';
0
ii. Remove the text ``section VIII of the ASME Boiler and Pressure
Vessel Code'' wherever it appears and add, in its place, the text
``Section VIII of the ASME BPVC''; and
0
iii. Remove the text ``46 CFR'' wherever it appears and add, in its
place, the symbol ``Sec.  ''.

Sec.  54.01-10   [Amended]

0
81. In Sec.  54.01-10, remove the word ``shall'' wherever it appears
and add, in its place, the word ``must''.
0
82. Amend Sec.  54.01-15 by revising the section heading and paragraphs
(a)(2) and (3)(i) to read as follows:

Sec.  54.01-15   Exemptions from shop inspection and plan approval
(modifies U-1(c)(2)).

    (a) * * *
    (2) (i) Hot water supply storage tanks heated by steam or any other
indirect means when none of the following limitations is exceeded:
    (A) A heat input of 58 kW (200,000 B.t.u. per hour);
    (B) A water temperature of 93 [deg]C (200 [deg]F);
    (C) A nominal water-containing capacity of 454 liters (120
gallons); or
    (D) A pressure of 689 kPa (100 psig).
    (ii) The exemption of any tank under paragraph (a)(2) of this
section requires that it must be fitted with a safety relief valve of
at least 1-inch diameter, set to relieve below the maximum allowable
working pressure of the tank.
    (3)(i) Vessels having an internal operating pressure not exceeding
103 kPa (15 psig) with no limitation on size.
* * * * *
0
83. Amend Sec.  54.01-18 as follows:
0
a. Revise paragraph (a);
0
b. In paragraph (b), remove the word ``shall'' and add, in its place,
the word ``must'';
0
c. In paragraph (b)(5):
0
i. Remove the text ``section VIII of section VIII of the ASME Boiler
and Pressure Vessel Code'' and add, in its place, the text ``Section
VIII of the ASME BPVC''; and
0
ii. Remove the text ``46 CFR'' and add, in its place, the symbol
``Sec.  ''; and
0
d. Add paragraph (c).
    The revision and addition read as follows:

Sec.  54.01-18  Plan approval.

    (a) Manufacturers intending to fabricate pressure vessels, heat
exchangers, evaporators, and similar appurtenances, covered by the
regulations in this part must submit detailed plans in accordance with
subpart 50.20 of this subchapter except as provided in paragraph (c)
below.
* * * * *
    (c) Plans for Class I, II, and III pressure vessels with the ASME
``U'' stamp that do not contain hazardous materials are not required to
be submitted for approval (see Sec.  54.01-5(e)).
0
84. Amend Sec.  54.01-25 as follows:
0
a. Revise paragraph (a); and
0
b. In paragraph (b):
0
i. Remove the word ``shall'' and add, in its place, the word ``must'';
and
0
ii. Remove the text ``46 CFR'' and add, in its place, the symbol
``Sec.  ''.
    The revision reads as follows:

Sec.  54.01-25  Miscellaneous pressure components (modifies UG-11).

    (a) Pressure components for pressure vessels must be as required by
UG-11 of Section VIII of the ASME BPVC (incorporated by reference; see
Sec.  54.01-1) except as noted otherwise in this section.
* * * * *
0
85. Amend Sec.  54.01-30 as follows:
0
a. Revise paragraph (a); and
0
b. In the introductory text to paragraph (b), remove the words
``section VIII of the ASME Boiler and Pressure Vessel Code'' and add,
in their place, the text ``Section VIII of the ASME BPVC''.
    The revision reads as follows:

Sec.  54.01-30  Loadings (modifies UG-22).

    (a) The loadings for pressure vessels must be as required by UG-22
of Section VIII of the ASME BPVC (incorporated by reference; see Sec.
54.01-1) except as noted otherwise in this section.
* * * * *
0
86. Amend Sec.  54.01-35 as follows:
0
a. Revise paragraph (a);
0
b. In paragraph (b), remove the word ``shall'' and add, in its place,
the word ``must'';
0
c. In paragraph (b)(4), remove the text ``section VIII of the ASME
Boiler and Pressure Vessel Code'' and add, in its place, the text
``Section VIII of the ASME BPVC'';
0
d. In paragraph (c), remove the word ``shall'' and add, in its place,
the word ``must''; and
0
e. Designate the note following paragraph (d) as paragraph (e) and
revise newly designated paragraph (e).
    The revisions read as follows:

Sec.  54.01-35  Corrosion (modifies UG-25).

    (a) Vessels or portions of vessels subject to corrosion must be as
required by UG-25 of Section VIII of the ASME BPVC (incorporated by
reference; see Sec.  54.01-1) except as noted otherwise in this
section.
* * * * *
    (e) No applied linings except as provided in part UCL of Section
VIII of the ASME BPVC are acceptable.

Sec.  54.01-40   [Amended]

0
87. In Sec.  54.01-40(b), remove the word ``shall'' and add, in its
place, the word ``must''.
0
88. Revise Sec.  54.03-1 to read as follows:

Sec.  54.03-1  Scope.

    The pressure vessels for low temperature operation must be as
required by Section VIII of the ASME BPVC (incorporated by reference;
see Sec.  54.01-1) as modified by this subpart.
0
89. Revise Sec.  54.05-1 to read as follows:

Sec.  54.05-1  Scope (replaces UG-84).

    The toughness tests of materials used in pressure vessels must be
as required by this subpart in lieu of requirements in UG-84 of Section
VIII of the ASME BPVC (incorporated by reference; see Sec.  54.01-1).

Sec.  54.05-3   [Amended]

0
90. Amend Sec.  54.05-3 as follows:
0
a. In the introductory text to paragraph (a), remove the word
``shall''; and
0
b. In paragraph (a)(2), remove the word ``shall'' and add, in its
place, the word ``must''.
0
91. Amend Sec.  54.05-5 as follows:
0
a. Revise paragraphs (a) and (b);
0
b. In paragraph (c)(1), remove the word ``shall'' and add, in its
place, the word ``must'';
0
c. In paragraph (c)(2), remove the words ``shall be'' and add, in their
place, the word ``are''; and
0
d. In paragraph (d), remove the word ``shall'' and add, in its place,
the word ``must''.
    The revisions read as follows:

Sec.  54.05-5  Toughness test specimens.

    (a) Charpy V-notch impact tests. Where required, Charpy V-notch
tests must be conducted in accordance with ASTM E23 (incorporated by
reference, see Sec.  54.01-1), using the Type A specimen shown in ASTM
E23--Figure 4. Special attention is drawn to the fact that the Charpy
Keyhole and U-notch specimens are not acceptable substitutes for the
Charpy V-notch specimen and must not be used to qualify materials
within the scope of this subpart. Each set of Charpy impact tests must
consist of three specimens. For materials \1/2\-inch thick or less, the
largest possible Charpy specimens for that thickness must be cut
centered at the material's mid-thickness. For materials thicker than
\1/2\-inch, full size Charpy specimens must be cut centered at a
location as near as practicable to a point midway between the
material's surface and half-thickness. Except where otherwise
specified, transversely oriented specimens must be used. When
longitudinal specimens are used, the required energy values may not be
less than 1.5 times the values required for transversely oriented
specimens. In all cases the notch must be cut normal to the material's
surface. Test specimens must be taken at least one ``t'' from any heat
treated edge (where ``t'' is the material's nominal thickness).
    (b) Drop weight tests. Where required, drop weight tests must be
conducted for no-break performance in accordance with ASTM E208
(incorporated by reference, see Sec.  54.01-1). For material
thicknesses between \1/2\-inch and \5/8\-inch, the ASTM E208 specimen
P-3, machined to \1/2\-inch thickness, must be used with a stop
distance of 0.090-inch. In preparing weld specimens for dropweight
testing, weld reinforcement must be ground flush, the hard facing bead
centered on and transverse to the weld, and the notch centered on and
parallel to the weld axis.
* * * * *
0
92. Amend Sec.  54.05-10 as follows:
0
a. Revise the second sentence of paragraph (a);
0
b. In paragraphs (b)(1), (3), (4), and (c)(2), remove the word
``shall'' wherever it appears and add, in its place, the word ``must'';
0
c. Revise, paragraph (c)(3);
0
d. In paragraphs (c)(4) and (d)(1), remove the word ``shall'' wherever
it appears and add, in its place, the word ``must'';
0
e. Reserve paragraph (d)(2);
0
f. In paragraphs (e)(1) and (3), remove the word ``shall'' wherever it
appears and add, in its place, the word ``must''; and
0
g. Revise the last sentence of paragraph (f).
    The revisions read as follows:

Sec.  54.05-10  Certification of material toughness tests.

    (a) * * * Impact specimens must be taken as outlined in section 12
of ASTM A20/A20M (incorporated by reference, see Sec.  54.01-1). * * *
* * * * *
    (c) * * *

    (3) One set of Charpy impact specimens or two drop-weight
specimens, as applicable, must be cut from each such test block and
these specimens will represent all forgings (up to 5 short tons) that
are from the same heat of material and given the same heat-treatment as
the test block, and the thickness of which does not differ from that of
the test block by more than plus or minus 50 percent of 1\1/2\ inches,
whichever is less, except that forged flanges and tube sheets thicker
than 5\1/2\ inches may be qualified from a 4-inch test block.
* * * * *
    (f) * * * For such parts too small to impact test, the Commandant
will determine toughness qualifications based on material, chemical,
and mechanical properties.

Sec.  54.05-15   [Amended]

0
93. Amend Sec.  54.05-15 as follows:
0
a. Remove the word ``shall'' wherever it appears and add, in its place,
the word ``must'';
0
b. In paragraph (a), remove the text ``figure 54.05-15(a)'' and add, in
its place, the text ``figure Sec.  54.05-15(a)'';
0
c. Redesignate figure 54.05-15(a) as figure Sec.  54.05-15(a); and
0
d. Reserve paragraph (b).
0
94. Amend Sec.  54.05-16 as follows:
0
a. In paragraphs (a) and (c), remove the word ``shall'' wherever it
appears and add, in its place, the word ``must'';
0
b. Revise paragraph (d); and
0
c. In paragraph (e), remove the word ``shall'' wherever it appears and
add, in its place, the word ``must''.
    The revisions read as follows:

Sec.  54.05-16  Production toughness testing.

* * * * *
    (d) The test plates and any other test material from which
toughness test specimens are cut must be given the same heat-treatment
as the production material they represent. Test specimens representing
other material than the weld toughness test plates should preferably be
cut from a part of the vessel material but may be cut from like
material that has been heat-treated within the temperature range
specified by the producer in treating the actual vessel material.
* * * * *

Sec.  54.05-17   [Amended]

0
95. In Sec.  54.05-17, remove the word ``shall'' wherever it appears
and add, in its place, the word ``must''.

Sec.  54.05-20   [Amended]

0
96. Amend Sec.  54.05-20 as follows:
0
a. In paragraph (a):
0
i. Remove the text ``table 54.05-20(a)'' and add, in its place, the
text ``table Sec.  54.05-20(a)''; and
0
ii. Redesignate table 54.05-20(a) as Sec.  54.05-20(a); and
0
b. In paragraph (b), remove the text ``ASTM A 203'' and add, in its
place, the text ``ASTM A203/A203M''.
0
97. Amend Sec.  54.05-30 by revising paragraph (b) to read as follows:

Sec.  54.05-30  Allowable stress values at low temperatures.

* * * * *
    (b) The use of such allowable stress values must be specially
approved by the Coast Guard for each application. Further information
may be obtained by writing to the Commandant (CG-ENG), Attn: Office of
Design and Engineering Standards, U.S. Coast Guard Stop 7509, 2703
Martin Luther King Jr. Avenue SE, Washington, DC 20593.
* * * * *
0
98. Revise Sec.  54.10-1 to read as follows:

Sec.  54.10-1  Scope (modifies UG-90 through UG-103 and UG-115 through
UG-120).

    The inspection, tests, stamping, and reports for pressure vessels
must be as required by paragraphs UG-90 through UG-103 and UG-115
through UG-120 of Section VIII of the ASME BPVC (incorporated by
reference; see Sec.  54.01-1) except as noted otherwise in this
subpart.
0
99. Amend Sec.  54.10-3 as follows:
0
a. Revise the section heading;
0
b. In paragraph (a), remove the word ``shall'' and add, in its place,
the word ``will'';
0
c. Revise paragraph (b);
0
d. Redesignate paragraph (c) as paragraph (d); and
0
e. Add paragraph (c).
    The revisions and addition read as follows:

Sec.  54.10-3  Marine inspectors and Coast Guard Symbol stamping
(replaces UG-90 and UG-91, and modifies UG-92 through UG-103).

* * * * *
    (b) All pressure vessels not exempted under provisions of Sec.
54.01-15 must be subject to shop inspection by a marine inspector
referring to procedures outlined in UG-92 through UG-103 of Section
VIII of the ASME BPVC (incorporated by reference; see Sec.  54.01-1)
and Sec. Sec.  50.30-10, 50.30-15, and 50.30-20 of this subchapter. The
marine inspector will then stamp the vessel with the Coast Guard
Symbol.
    (c) Pressure vessels exempted under provisions of Sec.  54.01-15,
except as provided in paragraph (d) of this section, are not required
to be stamped with the Coast Guard Symbol.
* * * * *

Sec.  54.10-5  [Amended]

0
100. Amend Sec.  54.10-5 as follows:
0
a. Remove the text ``section VIII of the ASME Boiler and Pressure
Vessel Code'' wherever it appears and add, in its place, the text
``Section VIII of the ASME BPVC'';
0
b. Remove the text ``46 CFR'' wherever it appears and add, in its
place, the symbol ``Sec.  '';
0
c. Designate the note following paragraph (c) as note 1 to Sec.  54.10-
5;
0
d. In newly designated note 1 to Sec.  54.10-5, remove the text ``Table
54.10-5'' and add, in its place, the text ``Table to Sec.  54.10-5'';
0
e. Designate the table following note 1 to Sec.  54.10-5 as table Sec.
54.10-5; and
0
f. Caption newly designated table Sec.  54.10-5 as ``Pressure Vessel
Design, Testing and Relief Valve Characteristics''.
0
101. Amend Sec.  54.10-10 as follows:
0
a. In paragraph (a), remove the word ``shall'' and add, in its place,
the word ``must'';
0
b. Revise paragraph (b);
0
c. In paragraphs (c) and (d), remove the word ``shall'' wherever it
appears and add, in its place, the word ``must'';
0
d. Revise paragraph (e); and
0
e. In paragraph (f), remove the word ``shall'' and add, in its place,
the word ``must''.
    The revisions read as follows:

Sec.  54.10-10   Standard hydrostatic test (modifies UG-99).

* * * * *
    (b) The hydrostatic-test pressure must be at least one and three-
tenths (1.30) times the maximum allowable working pressure stamped on
the pressure vessel, multiplied by the ratio of the stress value ``S''
at the test temperature to the stress value ``S'' at the design
temperature for the materials of which the pressure vessel is
constructed. The values for ``S'' must be taken from tables UCS 23, UNF
23, UHA 23, or UHT 23 of Section VIII of the ASME BPVC (incorporated by
reference, see Sec.  54.01-1). The value of ``S'' at test temperature
must be that taken for the material of the tabulated value of
temperature closest to the test temperature. The value of ``S'' at
design temperature must be as interpolated from the appropriate table.
No ratio less than one must be used. The stress resulting from the
hydrostatic test must not exceed 90 percent of the yield stress of the
material at the test temperature. External loadings which will exist in
supporting structure during the hydrostatic test should be

considered. The design must consider the combined stress during
hydrostatic testing due to pressure and the support reactions. This
stress must not exceed 90 percent of the yield stress of the material
at the test temperature. In addition the adequacy of the supporting
structure during hydrostatic testing should be considered in the
design.
* * * * *
    (e) Vessels requiring stress relieving must be stress relieved
after any welding repairs have been made. (See UW-40 of Section VIII of
the ASME BPVC.)
* * * * *
0
102. Amend Sec.  54.10-15 as follows:
0
a. In paragraph (a), remove the words ``shall be'' and add, in their
place, the word ``is'';
0
b. In paragraph (b), remove the word ``shall'' and add, in its place,
the word ``must'';
0
c. Revise paragraph (c); and
0
d. In paragraphs (d) through (g), remove the word ``shall'' wherever it
appears and add, in its place, the word ``must''.
    The revision reads as follows:

Sec.  54.10-15  Pneumatic test (modifies UG-100).

* * * * *
    (c) Except for enameled vessels, for which the pneumatic test
pressure must be at least equal to, but need not exceed, the maximum
allowable working pressure to be marked on the vessel, the pneumatic
test pressure must be at least equal to one and one-tenth (1.10) times
the maximum allowable working pressure to be stamped on the vessel
multiplied by the lowest ratio (for the materials of which the vessel
is constructed) of the stress value ``S'' for the test temperature of
the vessel to the stress value ``S'' for the design temperature (see
UG-21 of Section VIII of the ASME BPVC (incorporated by reference; see
Sec.  54.01-1)). In no case must the pneumatic test pressure exceed one
and one-tenth (1.10) times the basis for calculated test pressure as
defined in UA-60(e) of Section VIII of the ASME BPVC.
* * * * *

Sec.  54.10-20   [Amended]

0
103. Amend Sec.  54.10-20 as follows:
0
a. In paragraph (a)(2), add the text ``(only applicable to pressure
vessels inspected as required by Sec.  54.10-3(b))'' after the word
``subchapter'';
0
b. In paragraphs (b) and (c) remove the word ``shall'' wherever it
appears and add, in its place, the word ``must'';
0
c. Reserve paragraph (c)(2); and
0
d. In paragraph (d), remove the word ``shall'' wherever it appears and
add, in its place, the word ``must''.

Sec.  54.10-25   [Amended]

0
104. In Sec.  54.10-25, remove the word ``shall'' wherever it appears
and add, in its place, the word ``must''.

Sec.  54.15-1   [Amended]

0
105. Amend Sec.  54.15-1 as follows:
0
a. In paragraph (a), remove the text ``section VIII of the ASME Code''
and add, in its place, the text ``Section VIII of the ASME BPVC
(incorporated by reference; see Sec.  54.01-1)''; and
0
b. In paragraph (b), remove the word ``shall'' and add, in its place,
the word ``must''.

Sec.  54.15-5  [Amended]

0
106. Amend Sec.  54.15-5 as follows:
0
a. In paragraph (a):
0
i. Remove the text ``section VIII of the ASME Boiler and Pressure
Vessel Code'' and add, in its place, the text ``Section VIII of the
ASME BPVC''; and
0
ii. Remove the text ``46 CFR'' and add, in its place, the symbol
``Sec.  ''; and
0
b. In paragraphs (b) through (f) and (h) through (l), remove the word
``shall'' wherever it appears and add, in its place, the word ``must''.
0
107. Amend Sec.  54.15-10 as follows:
0
a. In paragraphs (a), (b), and (c), remove the word ``shall'' wherever
it appears and add, in its place, the word ``must'';
0
b. Revise paragraph (e);
0
c. In paragraph (g) and the introductory text to (h), remove the word
``shall'' wherever it appears and add, in its place, the word ``must'';
0
d. In paragraph (h)(1), remove the text ``46 CFR'' and add, in its
place, the symbol ``Sec.  '';
0
e. In paragraph (h)(2), remove the text ``section VIII of section VIII
of the ASME Boiler and Pressure Vessel Code'' wherever it appears and
add, in its place, the text ``Section VIII of the ASME BPVC''; and
0
f. In paragraph (h)(3), remove the text ``section VIII of the ASME
Boiler and Pressure Vessel Code'' wherever it appears and add, in its
place, the text ``Section VIII of the ASME BPVC''.
    The revision reads as follows:

Sec.  54.15-10  Safety and relief valves (modifies UG-126).

* * * * *
    (e) If the design of a safety or relief valve is such that liquid
can collect on the discharge side of the disk, the valve must be
equipped with a drain at the lowest point where liquid can collect (for
installation, see UG-134 of Section VIII of the ASME BPVC (incorporated
by reference; see Sec.  54.01-1).
* * * * *

Sec.  54.15-13  [Amended]

0
108. Amend Sec.  54.15-13 as follows:
0
a. In paragraph (a):
0
i. Remove the text ``section VIII of the ASME Boiler and Pressure
Vessel Code'' and add, in its place, the text ``Section VIII of the
ASME BPVC''; and
0
ii. Remove the text ``46 CFR'' and add, in its place, the symbol
``Sec.  ''; and
0
b. In paragraphs (b) and (c), remove the word ``shall'' wherever it
appears and add, in its place, the word ``must''.

Sec.  54.15-15   [Amended]

0
109. In Sec.  54.15-15, remove the word ``shall'' wherever it appears
and add, in its place, the word ``must''.

Sec.  54.15-25   [Amended]

0
110. Amend Sec.  54.15-25 as follows:
0
a. In paragraphs (a) and (b), remove the word ``shall'' wherever it
appears and add, in its place, the word ``must'';
0
b. In paragraph (c), remove the text ``Figure 54.15-25(c)'' and add, in
its place, the text ``figure Sec.  54.15-25(c)'';
0
c. Designate the figure immediately following paragraph (c) as figure
Sec.  54.15-25(c);
0
d. Caption newly designated figure Sec.  54.15-25(c) as ``Surface Area
of Grouped Vertical Tanks'';
0
e. Redesignate table 54.15-25(c) as table Sec.  54.15-25(c).
0
f. Redesignate paragraph (c-1) as paragraph (c)(1);
0
g. In newly redesignated paragraph (c)(1), remove the text ``(CG-
ENG)..'' and add, in its place, the text ``(CG-ENG).'';
0
h. Reserve paragraph (c)(2); and
0
i. In paragraphs (d) and (e), remove the word ``shall'' wherever it
appears and add, in its place, the word ``must''.
0
111. Amend Sec.  54.20-1 by revising paragraph (a) to read as follows:

Sec.  54.20-1  Scope (modifies UW-1 through UW-65).

    (a) Pressure vessels and vessel parts that are fabricated by
welding must be as required by paragraphs UW-1 through UW-65 of Section
VIII of the ASME BPVC (incorporated by reference; see Sec.  54.01-1)
except as noted otherwise in this subchapter.
* * * * *
0
112. Amend Sec.  54.20-3 as follows:
0
a. In paragraph (a), remove the word ``shall'' and add, in its place,
the word ``must'';
0
b. Revise paragraph (b);
0
c. In paragraph (c), remove the text ``section VIII of the ASME Boiler
and Pressure Vessel Code'' and add, in its

place, the text ``Section VIII of the ASME BPVC'';
0
d. Revise paragraph (d); and
0
e. In paragraph (e):
0
i. Remove the word ``shall'' and add, in its place, the word ``must'';
and
0
ii. Remove the text ``table 54.01-5(b)'' and add, in its place, the
text ``table 2 to Sec.  54.01-5''.
    The revisions read as follows:

Sec.  54.20-3  Design (modifies UW-9, UW-11(a), UW-13, and UW-16).

* * * * *
    (b) Welding subject to UW-11(a) of Section VIII of the ASME BPVC
(incorporated by reference; see Sec.  54.01-1) must be modified as
described in Sec.  54.25-8 for radiographic examination.
* * * * *
    (d) Attachment welds for nozzles and other connections must be in
accordance with UW-16 of Section VIII of the ASME BPVC. When nozzles or
connections are made to pressure vessels, as shown in Figure UW-16.1
(a) and (c) of the ASME BPVC, and are welded from one side only,
backing strips must be used unless it can be determined visually that a
full penetration weld has been achieved.
* * * * *

Sec.  54.20-5  [Amended]

0
113. In Sec.  54.20-5(a), remove the word ``shall'' and add, in its
place, the word ``must''.

Sec.  54.23-1   [Amended]

0
114. Amend Sec.  54.23-1 as follows:
0
a. In paragraph (a), remove the word ``shall'' and add, in its place,
the word ``must''; and
0
b. Reserve paragraph (b).
0
115. Revise Sec.  54.25-1 to read as follows:

Sec.  54.25-1   Scope.

    The pressure vessels for low temperature operation must be as
required by Section VIII of the ASME BPVC (incorporated by reference;
see Sec.  54.01-1) as modified by this subpart.
0
116. Revise Sec.  54.25-3 to read as follows:

Sec.  54.25-3   Steel plates (modifies UCS-6).

    The steels listed in UCS-6(b) of Section VIII of the ASME BPVC
(incorporated by reference; see Sec.  54.01-1) will be allowed only in
Class III pressure vessels (see table 2 to Sec.  54.01-5(b)).

Sec.  54.25-7  [Amended]

0
117. Amend Sec.  54.25-7 as follows:
0
a. In paragraph (a), remove the text ``table 54.01-5(b)'' and add, in
its place, the text ``table 2 to Sec.  54.01-5''; and
0
b. In paragraph (b), remove the word ``shall'' and add, in its place,
the word ``must''.
0
118. Amend Sec.  54.25-8 as follows:
0
a. In paragraph (a), remove the text ``table 54.01-5(b)'' and add, in
its place, the text ``table 2 to Sec.  54.01-5''; and
0
b. Revise paragraph (b).
    The revision reads as follows:

Sec.  54.25-8  Radiography (modifies UW-11(a), UCS-57, UNF-57, UHA-33,
and UHT-57).

* * * * *
    (b) Class II-L vessels must be spot radiographed. The exemption
provided in UW-11(c) of Section VIII of the ASME BPVC (incorporated by
reference; see Sec.  54.01-1) does not apply. (Refer to table 2 to
54.01-5 for applicable requirements.)
* * * * *
0
119. Amend Sec.  54.25-10 as follows:
0
a. Revise the section heading;
0
b. In paragraph (a)(2), remove the word ``shall'' and add, in its
place, the word ``must'';
0
c. Revise the introductory text to paragraph (b), and paragraph (b)(1);
0
d. Redesignate table 54.25-10(b)(1) as table 1 to Sec.  54.25-10(b)(1)
and designate the table immediately before paragraph (b)(2) as table 2
to Sec.  54.25-10(b)(1);
0
e. In paragraphs (b)(2):
0
i. Remove the word ``shall'' wherever it appears and add, in its place,
the word ``must''; and
0
ii. Remove the text ``table 54.25-10(b)(2)'' wherever it appears and
add, in its place, the text ``table 3 to Sec.  54.25-10(b)(2)'';
0
f. Redesignate table 54.25-10(b)(2) as table 3 to Sec.  54.25-10(b)(2);
0
g. In paragraphs (b)(3) through (5), remove the word ``shall'' wherever
it appears and add, in its place, the word ``must''; and
0
h. In paragraph (c), remove the text ``section VIII of the ASME Boiler
and Pressure Vessel Code'' wherever it appears and add, in its place,
the text ``Section VIII of the ASME BPVC''.
    The revision reads as follows:

Sec.  54.25-10  Low temperature operation--ferritic steels (replaces
UCS-65 through UCS-67).

* * * * *
    (b) Specifications. Materials used in the construction of vessels
to operate below 0 [deg]F. (but not below the designated minimum
service temperature) must conform to a specification given in table
UCS-23 in Section VIII of the ASME BPVC (incorporated by reference; see
Sec.  54.01-1) and the following additional requirements:
    Note 1 to paragraph (b) introductory text: For high alloy steels
refer to Sec.  54.25-15. For heat treated steels refer to Sec.  54.25-
20.
    (1)(i) For minimum service temperatures not lower than -67 [deg]F.,
ferritic steels must be made with fine grain practice and must have an
austenitic grain size of 5 or finer, and must be normalized.
Consideration will be given to other heat treatments; refer to Sec.
57.03-1(d) of this subchapter. Plate for pressure vessel applications
must conform to the requirements of ASTM A20/A20M (incorporated by
reference, see Sec.  54.01-1). It may be produced by the open hearth,
basic oxygen or electric furnace process and must conform to the
requirements of table 1 to Sec.  54.25-10(b)(1). (Other alloying
elements may only be present in trace amounts.)
    (ii) Mechanical properties must be within the following limits:
(A) Ultimate strength:
    --58,000 \1\-85,000 \1\ p.s.i.
(B) Yield strength:
    --Minimum 35,000 p.s.i.
    --Maximum 80 percent of ultimate.
(C) Elongation minimum:
    --20 percent in 8 inches, or
    --24 percent in 2 inches, or
    --22 percent in 5.65 [radic]A, where ``A'' is the test specimen
cross sectional area.
* * * * *
0
120. Revise Sec.  54.25-15 to read as follows:

Sec.  54.25-15  Low temperature operation--high alloy steels (modifies
UHA-23(b) and UHA-51).

    (a) Toughness tests for the materials listed in UHA-51(a) in
Section VIII of the ASME BPVC (incorporated by reference; see Sec.
54.01-1) for service temperatures below -425 [deg]F., UHA-51(b)(1)
through (5) for service temperatures below 0 [deg]F., and UHA-51(c) for
all service temperatures, must be performed in accordance with the
requirements of subpart 54.05. These requirements are also applicable
to nonpressure vessel type, low temperature tanks and associated
secondary barriers, as defined in Sec.  38.05-4 in subchapter D (Tank
Vessels) of this chapter. Such tests are required regardless of the
vessel's design stress. Service temperature is defined in Sec.  54.25-
10(a)(2).
    (b) Materials for pressure vessels with service temperatures below
-320 [deg]F. must be of the stabilized or low carbon (less than 0.10
percent) austenitic stainless steel type, produced according to the
applicable specifications of table UHA-23 of Section VIII of the ASME
BPVC. These materials and their weldments must be tested for toughness
according to the requirements of subpart 54.05 except that the Charpy
V-notch

testing acceptance criteria will be in accordance with UHT-6(a)(4) and
(5) of Section VIII of the ASME BPVC.
    (c) Except as permitted by Sec.  54.05-30, the allowable stress
values used in the design of low temperature pressure vessels may not
exceed those given in table UHA-23 of Section VIII of the ASME BPVC for
temperatures of -20 [deg]F. to 100 [deg]F.
0
121. Amend Sec.  54.25-20 as follows:
0
a. Revise the section heading;
0
b. In paragraph (a):
0
i. Remove the word ``shall'' wherever it appears and add, in its place,
the word ``must''; and
0
ii. Remove the text ``table 54.25-20(a)'' and add, in its place, the
text ``table Sec.  54.25-20(a)'';
0
c. Redesignate table 54.25-20(a) as Sec.  54.25-20(a)
0
d. Revise paragraph (b);
0
e. Designate the figure following paragraph (b) as Figure Sec.  54.25-
20(b);
0
f. In paragraph (c):
0
i. Remove the text ``section VIII of the ASME Boiler and Pressure
Vessel Code'' and add, in its place, the text ``Section VIII of the
ASME BPVC''; and
0
ii. Remove the text ``table 54.25-20(a)'' and add, in its place, the
text ``table Sec.  54.25-20(a)''; and
0
g. In paragraph (d), remove the word ``shall'' and add, in its place,
the word ``must''.
    The revisions read as follows:

Sec.  54.25-20  Low temperature operation--ferritic steels with
properties enhanced by heat treatment (modifies UHT-5(c), UHT-6, UHT-
23, and UHT-82).

* * * * *
    (b) The materials permitted under paragraph (a) of this section
must be tested for toughness in accordance with the requirements of
UHT-6 of Section VIII of the ASME BPVC (incorporated by reference; see
Sec.  54.01-1) except that tests must be conducted at the temperature
specified in Sec.  54.05-6 in lieu of that in UHT-5(c) of Section VIII
of the ASME BPVC. Lateral expansion in a broken Charpy V-notch specimen
is illustrated in Figure 54.25-20(b) and must be measured in accordance
with the procedure outlined in ASTM A370 (incorporated by reference,
see Sec.  54.01-1).
* * * * *
0
122. Amend Sec.  54.30-3 by revising paragraph (c) to read as follows:

Sec.  54.30-3   Introduction.

* * * * *
    (c) The weld joint efficiencies as listed in table UW-12 of Section
VIII of the BPVC (incorporated by reference; see Sec.  54.01-1) apply
except that a minimum of spot radiography will be required. UW-12(c) of
Section VIII of the ASME BPVC that permits omitting all radiography
does not apply. Spot examination must follow UW-52 of Section VIII of
the ASME BPVC and, in addition, these vessels will be required to have
radiographic examination of intersecting circumferential and
longitudinal joints for a distance of at least 20 times the plate
thickness from the junction. See Sec.  54.25-8 on spot radiography.
* * * * *
0
123. Amend Sec.  54.30-5 as follows:
0
a. In the introductory text to paragraph (a), remove the text ``table
54.01-5(b)'' and add, in its place, the text ``table 2 to Sec.  54.01-
5'';
0
b. In paragraph (a)(1):
0
i. Remove the text ``section VIII of the ASME Boiler and Pressure
Vessel Code'' and add, in its place, the text ``Section VIII of the
ASME BPVC''; and
0
ii. Remove the text ``46 CFR'' and add, in its place, the symbol
``Sec. '';
0
c. In paragraph (a)(4), remove the text ``section VIII of the ASME
Boiler and Pressure Vessel Code'' and add, in its place, the text
``Section VIII of the ASME BPVC'';
0
d. Revise paragraph (a)(6); and
0
e. In paragraph (b), remove the word ``shall'' and add, in its place,
the word ``must''.
    The revision reads as follows:

Sec.  54.30-5  Limitations and requirements.

    (a) * * *
    (6) The categories A and B joints are type one as described in
table UW-12 of Section VIII of the ASME BPVC and all categories C and D
joints are full penetration welds. See UW-3 of the ASME BPVC for
definition of categories.
* * * * *

Sec.  54.30-10   [Amended]

0
124. Amend Sec.  54.30-10 as follows:
0
a. In the introductory text to paragraph (a), remove the word ``shall''
and add, in its place, the word ``must'';
0
b. In paragraph (a)(1):
0
i. Remove the text ``section VIII of the ASME Boiler and Pressure
Vessel Code'' and add, in its place, the text ``Section VIII of the
ASME BPVC''; and
0
ii. Remove the text ``46 CFR'' and add, in its place, the symbol
``Sec.  ''; and
0
c. In paragraphs (a)(2) and (3), remove the word ``shall'' wherever it
appears and add, in its place, the word ``must''.

Sec.  54.30-15  [Amended]

0
125. In Sec.  54.30-15, remove the word ``shall'' wherever it appears
and add, in its place, the word ``must''.

PART 56--PIPING SYSTEMS AND APPURTENANCES

0
126. The authority citation for part 56 continues to read as follows:

    Authority: 33 U.S.C. 1321(j), 1509; 43 U.S.C. 1333; 46 U.S.C.
3306, 3703; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; E.O.
12777, 56 FR 54757, 3 CFR, 1991 Comp., p. 351; Department of
Homeland Security Delegation No. 0170.1.

Sec.  56.01-1   [Amended]

0
127. In Sec.  56.01-1(b), remove the word ``shall'' and add, in its
place, the word ``must''.
0
128. Revise Sec.  56.01-2 to read as follows:

Sec.  56.01-2  Incorporation by reference.

    Certain material is incorporated by reference into this part with
the approval of the Director of the Federal Register under 5 U.S.C.
552(a) and 1 CFR part 51. To enforce any edition other than that
specified in this section, the Coast Guard must publish a document in
the Federal Register and the material must be available to the public.
All approved material is available for inspection at the Coast Guard
Headquarters. Contact Commandant (CG-ENG), Attn: Office of Design and
Engineering Standards, U.S. Coast Guard Stop 7509, 2703 Martin Luther
King Jr. Avenue SE, Washington, DC 20593-7509, phone<PHONE_NUMBER>,
email [email protected], and is available from the sources listed
elsewhere in this section. The material is also available for
inspection at the National Archives and Records Administration (NARA).
For information on the availability of this material at NARA, email
[email protected] or go to www.archives.gov/federal-register/cfr/ibr-locations.html.
    (a) American Petroleum Institute (API), 1220 L Street NW,
Washington, DC 20005-4070, www.api.org.
    (1) API Standard 607, Fire Test for Quarter-turn Valves and Valves
Equipped with Nonmetallic Seats, Seventh Edition, June 2016 (``API
607''); IBR approved for Sec.  56.20-15.
    (2) [Reserved]
    (b) American Society of Mechanical Engineers (ASME), Two Park
Avenue, New York, NY 10016-5990,<PHONE_NUMBER>, www.asme.org.
    (1) ASME Boiler and Pressure Vessel Code, Section I, Rules for
Construction of Power Boilers (2019) (``Section I of the ASME BPVC'');
IBR approved for Sec. Sec.  56.15-1, 56.60-1, 56.70-15, 56.95-10.
    (2) ASME Boiler and Pressure Vessel Code, Section VIII, Division 1,
Rules for Construction of Pressure Vessels (2019) (``Section VIII of
the ASME BPVC''); IBR

approved for Sec. Sec.  56.15-156.25-5, 56.30-10, 56.60-1, 56.60-2,
56.60-15, 56.95-10.
    (3) ASME Boiler and Pressure Vessel Code, Section IX, Welding and
Brazing Qualifications (2019) (``Section IX of the ASME BPVC''); IBR
approved for Sec. Sec.  56.70-5, 56.70-20, 56.75-20, 56.85-10.
    (4) ASME B1.1-2003, Unified Inch Screw Threads (UN and UNR Thread
Form), September 30, 2004, reaffirmed 2008 (``ASME B1.1''); IBR
approved for Sec. Sec.  56.25-20, 56.60-1.
    (5) ASME B1.20.1-2013, Pipe Threads, General Purpose (Inch),
November 15, 2013 (``ASME B1.20.1''); IBR approved for Sec.  56.60-1.
    (6) ASME B1.20.3-1976, Dryseal Pipe Threads (Inch), January 1,
1976, reaffirmed 2013, (``ASME B1.20.3''); IBR approved for Sec.
56.60-1.
    (7) ASME B16.1-2015, Gray Iron Pipe Flanges and Flanged Fittings,
Classes 25, 125, and 250, December 28, 2015 (``ASME B16.1''); IBR
approved for Sec. Sec.  56.60-1, 56.60-10.
    (8) ASME B16.3-2016, Malleable Iron Threaded Fittings, Classes 150
and 300, November 30, 2016 (``ASME B16.3''); IBR approved for Sec.
56.60-1.
    (9) ASME B16.4-2016, Gray Iron Threaded Fittings, Classes 125 and
250, November 11, 2016 (``ASME B16.4''); IBR approved for Sec.  56.60-
1.
    (10) ASME B16.5-2017, Pipe Flanges and Flanged Fittings, NPS \1/2\
Through NPS 24 Metric/Inch Standard, November 20, 2017, (``ASME
B16.5''); IBR approved for Sec. Sec.  56.25-20, 56.30-10, 56.60-1.
    (11) ASME B16.11-2016, Forged Fittings, Socket-Welding and
Threaded, January 1, 2016 (``ASME B16.11''); IBR approved for
Sec. Sec.  56.30-5, 56.60-1.
    (12) ASME B16.14-2013, Ferrous Pipe Plugs, Bushings, and Locknuts
with Pipe Threads, November 15, 2013 (``ASME B16.14''); IBR approved
for Sec.  56.60-1.
    (13) ASME B16.15-2013, Cast Copper Alloy Threaded Fittings, Classes
125 and 250, December 6, 2013 (``ASME B16.15''); IBR approved for Sec.
56.60-1.
    (14) ASME B16.20-2012, Metallic Gaskets for Pipe Flanges, Ring-
Joint, Spiral-Wound, and Jacketed, January 1, 2012 (``ASME B16.20'');
IBR approved for Sec.  56.60-1.
    (15) ASME B16.21-2016, Nonmetallic Flat Gaskets for Pipe Flanges,
December 9, 2016 (``ASME B16.21''); IBR approved for Sec.  56.60-1.
    (16) ASME B16.23-2016, Cast Copper Alloy Solder Joint Drainage
Fittings: DWV, January 1, 2016 (``ASME B16.23''); IBR approved for
Sec.  56.60-1.
    (17) ASME B16.25-2012, Buttwelding Ends, January 1, 2012 (``ASME
B16.25''); IBR approved for Sec. Sec.  56.30-5, 56.60-1, 56.70-10.
    (18) ASME B16.29-2012, Wrought Copper and Wrought Copper Alloy
Solder-Joint Drainage Fittings--DWV, September 26, 2012 (``ASME
B16.29''); IBR approved for Sec.  56.60-1.
    (19) ASME B16.34-2017, Valves--Flanged, Threaded, and Welding End,
August 23, 2017 (``ASME B16.34''); IBR approved for Sec.  56.60-1.
    (20) ASME B18.2.1-2012, Square, Hex, Heavy Hex, and Askew Head
Bolts and Hex, Heavy Hex, Hex Flange, Lobed Head, and Lag Screws (Inch
Series), 2012 (``ASME B18.2.1''); IBR approved for Sec. Sec.  56.25-20,
56.60-1.
    (21) ASME B18.2.2-2015, Nuts for General Applications: Machine
Screw Nuts, Hex, Square, Hex Flange, and Coupling Nuts (Inch Series),
November 30, 2015 (``ASME B18.2.2''); IBR approved for Sec. Sec.
56.25-20, 56.60-1.
    (22) ASME B31.1-2016, Power Piping, ASME Code for Pressure Piping,
June 30, 2016 (``ASME B31.1''); IBR approved for Sec. Sec.  56.01-3,
56.01-5, 56.07-5, 56.07-10, 56.10-1, 56.10-5, 56.15-1, 56.25-7, 56.30-
1, 56.30-5, 56.30-20, 56.35-1, 56.50-1, 56.50-40, 56.50-70, 56.50-97,
56.60-1, 56.65-1, 56.70-5, 56.70-10, 56.70-15, 56.80-5, 56.80-15,
56.85-10, 56.95-1, 56.95-10, 56.97-1.
    (23) ASME B31.3-2018, Process Piping, ASME Code for Pressure
Piping, August 30, 2019 (``ASME B31.3''); IBR approved for Sec.  56.60-
1.
    (24) ASME B36.10M-2015 Welded and Seamless Wrought Steel Pipe,
August 31, 2015 (``ASME B36.10M''); IBR approved for Sec. Sec.  56.07-
5, 56.30-20, 56.60-1.
    (25) ASME B36.19M-2004 Stainless Steel Pipe, October 25, 2004
(``ASME B36.19M''); IBR approved for Sec. Sec.  56.07-5, 56.60-1.
    (26) ASME SA-675, Standard Specification for Steel Bars, Carbon,
Hot-Wrought, Special Quality, Mechanical Properties, May 1, 2014
(``ASTM SA-675''); IBR approved for Sec.  56.60-2.
    (c) ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West
Conshohocken, PA 19428-2959,<PHONE_NUMBER>, www.astm.org.
    (1) ASTM A36/A36M-14, Standard Specification for Carbon Structural
Steel, December 1, 2014 (``ASTM A36/A36M''); IBR approved for Sec.
56.30-10.
    (2) ASTM A47/A47M-99 (Reapproved 2014), Standard Specification for
Ferritic Malleable Iron Castings, April 1, 2014, (``ASTM A47/A47M'');
IBR approved for Sec.  56.30-10, 56.60-1.
    (3) ASTM A53/A53M-12, Standard Specification for Pipe, Steel, Black
and Hot-Dipped, Zinc-Coated, Welded and Seamless, March 1, 2012 (``ASTM
A53/A53M''); IBR approved for Sec. Sec.  56.10-5, 56.60-1.
    (4) ASTM A126-04 (Reapproved 2014), Standard Specification for Gray
Iron Castings for Valves, Flanges, and Pipe Fittings, April 1, 2014
(``ASTM A126''); IBR approved for Sec.  56.60-1.
    (5) ASTM A135/A135M-19, Standard Specification for Electric-
Resistance-Welded Steel Pipe, May 1, 2019 (``ASTM A135/A135M''); IBR
approved for Sec.  56.60-1.
    (6) ASTM A197/A197M-00 (Reapproved 2015), Standard Specification
for Cupola Malleable Iron, November 1, 2015 (``ASTM A197/A197M''); IBR
approved for Sec.  56.60-1.
    (7) ASTM A210/A210M-19, Standard Specification for Seamless Medium-
Carbon Steel Boiler and Superheater Tubes, May 1, 2019 (``ASTM A210/
A210M''); IBR approved for Sec.  56.60-1.
    (8) ASTM A268/A268M-10 (Reapproved 2016), Standard Specification
for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing
for General Service, September 1, 2016 (``ASTM A268/A268M''); IBR
approved for Sec.  56.60-1.
    (9) ASTM A276/A276M-17, Standard Specification for Stainless Steel
Bars and Shapes, March 15, 2017 (``ASTM A276/A276M''); IBR approved for
Sec.  56.60-2.
    (10) ASTM A312/A312M-17, Standard Specification for Seamless,
Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes, March
15, 2017 (``ASTM A312/A312M''); IBR approved for Sec. Sec.  56.50-105,
56.60-1.
    (11) ASTM A333/A333M-16, Standard Specification for Seamless and
Welded Steel Pipe for Low-Temperature Service and Other Applications
with Required Notch Toughness, March 1, 2016 (``ASTM A333/A333M''); IBR
approved for Sec. Sec.  56.50-105, 56.60-1.
    (12) ASTM A334/A334M-04a, Standard Specification for Seamless and
Welded Carbon and Alloy-Steel Tubes for Low-Temperature Service, May 1,
2004 (``ASTM A334/A334M''); IBR approved for Sec. Sec.  56.50-105,
56.60-1.
    (13) ASTM A350/A350M-17, Standard Specification for Carbon and Low-
Alloy Steel Forgings, Requiring Notch Toughness Testing for Piping
Components, September 1, 2017 (``ASTM A350/A350M''); IBR approved for
Sec.  56.50-105.
    (14) ASTM A352/A352M-17, Standard Specification for Steel Castings,
Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for
Low-Temperature Service, November 1, 2017 (``ASTM A352/A352M''); IBR
approved for Sec.  56.50-105.
    (15) ASTM A358/A358M-15, Standard Specification for Electric-

Fusion-Welded Austenitic Chromium-Nickel Stainless Steel Pipe for High-
Temperature Service and General Applications, September 1, 2015 (``ASTM
A358/A358M''); IBR approved for Sec.  56.60-1.
    (16) ASTM A376/A376M-17, Standard Specification for Seamless
Austenitic Steel Pipe for High-Temperature Service, September 1, 2017
(``ASTM A376/A376M''); IBR approved for Sec. Sec.  56.60-1, 56.60-2.
    (17) ASTM A403/A403M-16, Standard Specification for Wrought
Austenitic Stainless Steel Piping Fittings, May 1, 2016 (``ASTM A403/
A403M''); IBR approved for Sec.  56.60-1.
    (18) ASTM A420/A420M-16, Standard Specification for Piping Fittings
of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service,
May 1, 2016 (``ASTM A420/A420M''); IBR approved for Sec. Sec.  56.50-
105, 56.60-1.
    (19) ASTM A522/A522M-14, Standard Specification for Forged or
Rolled 8 and 9% Nickel Alloy Steel Flanges, Fittings, Valves, and Parts
for Low-Temperature Service, October 1, 2014 (``ASTM A522/A522M'') IBR
approved for Sec.  56.50-105.
    (20) ASTM A575-96 (Reapproved 2013),\e1\ Standard Specification for
Steel Bars, Carbon, Merchant Quality, M-Grades, July 2013 (``ASTM
A575''); IBR approved for Sec.  56.60-2.
    (21) ASTM A576-17, Standard Specification for Steel Bars, Carbon,
Hot-Wrought, Special Quality, November 1, 2017 (``ASTM A576''); IBR
approved for Sec.  56.60-2.
    (22) ASTM B16/B16M-10 (Reapproved 2015), Standard Specification for
Free-Cutting Brass Rod, Bar, and Shapes for Use in Screw Machines May
1, 2015 (``ASTM B16/B16M''); IBR approved for Sec.  56.60-2.
    (23) ASTM B21/B21M-20, Standard Specification for Naval Brass Rod,
Bar, and Shapes, April 1, 2020 (``ASTM B21/B21M''); IBR approved for
Sec.  56.60-2.
    (24) ASTM B26/B26M-18, Standard Specification for Aluminum-Alloy
Sand Castings, May 15, 2018 (``ASTM B26/B26M''); IBR approved for Sec.
56.60-2.
    (25) ASTM B42-20, Standard Specification for Seamless Copper Pipe,
Standard Sizes, April 1, 2020 (``ASTM B42''); IBR approved for Sec.
56.60-1.
    (26) ASTM B43-15, Standard Specification for Seamless Red Brass
Pipe, Standard Sizes, October 1, 2015 (``ASTM B43''); IBR approved for
Sec.  56.60-1.
    (27) ASTM B68/B68M-19, Standard Specification for Seamless Copper
Tube, Bright Annealed, April 1, 2019 (``ASTM B68/B68M''); IBR approved
for Sec.  56.60-1.
    (28) ASTM B75/B75M-19, Standard Specification for Seamless Copper
Tube, April 1, 2019 (``ASTM B75/B75M''); IBR approved for Sec.  56.60-
1.
    (29) ASTM B85/B85M-18, Standard Specification for Aluminum-Alloy
Die Castings, May 1, 2018 (``ASTM B85/B85M''); IBR approved for Sec.
56.60-2.
    (30) ASTM B96/B96M-16, Standard Specification for Copper-Silicon
Alloy Plate, Sheet, Strip, and Rolled Bar for General Purposes and
Pressure Vessels, April 1, 2016 (``ASTM B96/B96M''); IBR approved for
Sec.  56.60-2.
    (31) ASTM B111/B111M-18a, Standard Specification for Copper and
Copper-Alloy Seamless Condenser Tubes and Ferrule Stock, October 1,
2018 (``ASTM B111/B111M''); IBR approved for Sec.  56.60-1.
    (32) ASTM B124/B124M-18, Standard Specification for Copper and
Copper Alloy Forging Rod, Bar, and Shapes, March 15, 2018 (``ASTM B124/
B124M''); IBR approved for Sec.  56.60-2.
    (33) ASTM B161-05 (Reapproved 2019), Standard Specification for
Nickel Seamless Pipe and Tube, April 1, 2019) (``ASTM B161''); IBR
approved for Sec.  56.60-1.
    (34) ASTM B165-19, Standard Specification of Nickel-Copper Alloy
Seamless Pipe and Tube, November 1, 2019 (``ASTM B165''); IBR approved
for Sec.  56.60-1.
    (35) ASTM B167-18, Standard Specification for Nickel-Chromium-
Aluminum Alloys (UNS N06699), Nickel-Chromium-Iron Alloys (UNS N06600,
N06601, N06603, N06690, N06693, N06025, N06045, and N06696), Nickel-
Chromium-Cobalt-Molybdenum Alloy (UNS N06617), Nickel-Iron-Chromium-
Tungsten Alloy (UNS N06674), and Nickel-Chromium-Molybdenum-Copper
Alloy (UNS N06235) Seamless Pipe and Tube, December 1, 2018 (``ASTM
B167''); IBR approved for Sec.  56.60-1.
    (36) ASTM B171/B171M-18, Standard Specification for Copper-Alloy
Plate and Sheet for Pressure Vessels, Condensers, and Heat Exchangers,
October 1, 2018 (``ASTM B171/B171M''); IBR approved for Sec.  56.60-2.
    (37) ASTM B210-19a, Standard Specification for Aluminum and
Aluminum-Alloy Drawn Seamless Tubes, November 1, 2019 (``ASTM B210'');
IBR approved for Sec.  56.60-1.
    (38) ASTM B234-17, Standard Specification for Aluminum and
Aluminum-Alloy Drawn Seamless Tubes for Surface Condensers,
Evaporators, and Heat Exchangers, October 1, 2017 (``ASTM B234''); IBR
approved for Sec.  56.60-1.
    (39) ASTM B241/B241M-16, Standard Specification for Aluminum and
Aluminum-Alloy Seamless Pipe and Seamless Extruded Tube, February 1,
2016 (``ASTM B241/B241M''); IBR approved for Sec.  56.60-1.
    (40) ASTM B280-18, Standard Specification for Seamless Copper Tube
for Air Conditioning and Refrigeration Field Service, March 1, 2018
(``ASTM B280''); IBR approved for Sec.  56.60-1.
    (41) ASTM B283/B283M-18, Standard Specification for Copper and
Copper-Alloy Die Forgings (Hot-Pressed), March 1, 2018 (``ASTM B283/
B283M''); IBR approved for Sec.  56.60-2.
    (42) ASTM B315-19, Standard Specification for Seamless Copper Alloy
Pipe and Tube, April 1, 2019 (``ASTM B315''); IBR approved for Sec.
56.60-1.
    (43) ASTM B361-16, Standard Specification for Factory-Made Wrought
Aluminum and Aluminum-Alloy Welding Fittings, May 1, 2016 (``ASTM
B361''); IBR approved for Sec.  56.60-1.
    (44) ASTM B858-06 (Reapproved 2018), Standard Test Method for
Ammonia Vapor Test for Determining Susceptibility to Stress Corrosion
Cracking in Copper Alloys, March 1, 2018 (``ASTM B858''); IBR approved
for Sec.  56.60-2.
    (45) ASTM E23-18, Standard Test Methods for Notched Bar Impact
Testing of Metallic Materials, June 1, 2018 (``ASTM E23''); IBR
approved for Sec.  56.50-105.
    (46) ASTM F1006-86 (Reapproved 2018), Standard Specification for
Entrainment Separators for Use in Marine Piping Applications, September
1, 2018 (``ASTM F1006''); IBR approved for Sec.  56.60-1.
    (47) ASTM F1007-18, Standard Specification for Pipeline Expansion
Joints of the Packed Slip Type for Marine Application, May 1, 2018
(``ASTM F1007''); IBR approved for Sec.  56.60-1.
    (48) ASTM F1020-86 (Reapproved 2018), Standard Specification for
Line-Blind Valves for Marine Applications, March 1, 2018 (``ASTM
F1020''); IBR approved for Sec.  56.60-1.
    (49) ASTM F1120-87 (Reapproved 2015), Standard Specification for
Circular Metallic Bellows Type Expansion Joints for Piping
Applications, May 1, 2015 (``ASTM F1120''); IBR approved for Sec.
56.60-1.
    (50) ASTM F1123-87 (Reapproved 2015), Standard Specification for
Non-Metallic Expansion Joints, May 1, 2015 (``ASTM F1123''); IBR
approved for Sec.  56.60-1.
    (51) ASTM F1139-88 (Reapproved 2015), Standard Specification for
Steam Traps and Drains, May 1, 2015) (``ASTM F1139''); IBR approved for
Sec.  56.60-1.
    (52) ASTM F1155-10 (Reapproved 2015), Standard Practice for
Selection

and Application of Piping System Materials, May 1, 2015 (``ASTM
F1155''); IBR approved for Sec. Sec.  56.50-60, 56.50-105, 56.60-1,
56.60-15.
    (53) ASTM F1172-88 (Reapproved 2015), Standard Specification for
Fuel Oil Meters of the Volumetric Positive Displacement Type, May 1,
2015 (``ASTM F1172''); IBR approved for Sec.  56.60-1.
    (54) ASTM F1173-01 (Reapproved 2018), Standard Specification for
Thermosetting Resin Fiberglass Pipe and Fittings to be Used for Marine
Applications, March 1, 2018 (``ASTM F1173''); IBR approved for Sec.
56.60-1.
    (55) ASTM F1199-88 (Reapproved 2015), Standard Specification for
Cast (All Temperatures and Pressures) and Welded Pipe Line Strainers
(150 psig and 150 [deg]F Maximum), May 1, 2015 (``ASTM F1199''); IBR
approved for Sec.  56.60-1.
    (56) ASTM F1200-88 (Reapproved 2016), Standard Specification for
Fabricated (Welded) Pipe Line Strainers (Above 150 psig and 150
[deg]F), September 1, 2016 (``ASTM F1200''); IBR approved for Sec.
56.60-1
    (57) ASTM F1201-88 (Reapproved 2016), Standard Specification for
Fluid Conditioner Fittings in Piping Applications above 0 [deg]F,
September 1, 2016 (``ASTM F1201''); IBR approved for Sec.  56.60-1.
    (58) ASTM F1387-19, Standard Specification for Performance of
Mechanically Attached Fittings, September 15, 2019 (``ASTM F1387'');
IBR approved for Sec.  56.30-25.
    (59) ASTM F1476-07 (Reapproved 2013), Standard Specification for
Performance of Gasketed Mechanical Couplings for Use in Piping
Applications, October 1, 2013 (``ASTM F1476''); IBR approved for Sec.
56.30-35.
    (60) ASTM F1548-01 (Reapproved 2018), Standard Specification for
the Performance of Fittings for Use with Gasketed Mechanical Couplings
Used in Piping Applications, March 1, 2018 (``ASTM F1548''); IBR
approved for Sec.  56.30-35.
    (d) Expansion Joint Manufacturers Association Inc. (EJMA), 25 North
Broadway, Tarrytown, NY 10591, www.ejma.org/.
    (1) Standards of the Expansion Joint Manufacturers Association,
10th Edition, July 1, 2015; IBR approved for Sec.  56.60-1.
    (2) [Reserved]
    (e) Fluid Controls Institute Inc. (FCI), 1300 Sumner Avenue,
Cleveland, Ohio 44115, www.fluidcontrolsinstitute.org.
    (1) FCI 69-1 Pressure Rating Standard for Steam Traps, January 1,
2017 (``FCI 69-1''); IBR approved for Sec.  56.60-1.
    (2) [Reserved]
    (f) International Maritime Organization (IMO Publications Section),
4 Albert Embankment, London SE1 7SR, United Kingdom, +44 (0) 20 7735
7611, www.imo.org.
    (1) Resolution A.753(18) Guidelines for the Application of Plastic
Pipes on Ships, adopted on 4 November 1993 (``IMO Resolution
A.753(18)''); IBR approved for Sec.  56.60-25.
    (2) Resolution MSC.313(88), Amendments to the Guidelines for the
Application of Plastic Pipes on Ships, adopted 26 November 2010 (``IMO
Resolution MSC.313(88)''); IBR approved for Sec.  56.60-25.
    (3) The International Convention for the Safety of Life at Sea,
1974, as amended (SOLAS); IBR approved for Sec.  56.50-50.
    (g) International Organization for Standardization (ISO), Case
Postal 56, CH-1211 Geneva 20 Switzerland, www.iso.org.
    (1) ISO 15540:2016(E) Ships and Marine Technology--Fire resistance
of non-metallic hose assemblies and non-metallic compensators--Test
methods, 2nd Edition, July 15, 2016 (``ISO 15540''); IBR approved for
Sec.  56.60-25.
    (2) [Reserved]
    (h) Manufacturers Standardization Society of the Valve and Fittings
Industry, Inc. (MSS), 127 Park Street NE, Vienna, VA 22180-4601,
www.msshq.org.
    (1) MSS SP-6-2017, Standard Finishes for Contact Faces of Pipe
Flanges and Connecting-End Flanges of Valves and Fittings, January 2017
(``MSS SP-6''); IBR approved for Sec. Sec.  56.25-10, 56.60-1.
    (2) MSS SP-9-2013, Spot Facing for Bronze, Iron and Steel Flanges,
January 1, 2013 (``MSS SP-9''); IBR approved for Sec.  56.60-1.
    (3) ANSI/MSS SP-25-2018, Standard Marking System for Valves,
Fittings, Flanges and Unions, March 2018 (``MSS SP-25''); IBR approved
for Sec. Sec.  56.15-1, 56.20-5, 56.60-1.
    (4) MSS SP-45-2003, Bypass and Drain Connections, 2003 (``MSS SP-
45''); IBR approved for Sec. Sec.  56.20-20, 56.60-1.
    (5) MSS SP-51-2012, Class 150LW Corrosion Resistant Flanges and
Cast Flanged Fittings, January 1, 2012 (``MSS SP-51''); IBR approved
for Sec.  56.60-1.
    (6) MSS SP-53-2012, Quality Standard for Steel Castings and
Forgings for Valves, Flanges, Fittings, and Other Piping Components--
Magnetic Particle Examination Method, January 2012 (``MSS SP-53''); IBR
approved for Sec.  56.60-1.
    (7) ANSI/MSS SP-55-2011, Quality Standard for Steel Castings for
Valves, Flanges, Fittings and Other Piping Components--Visual Method
for Evaluation of Surface Irregularities, October 2011 (``MSS SP-55'');
IBR approved for Sec.  56.60-1.
    (8) ANSI/MSS SP-58-2009, Pipe Hangers and Supports--Materials,
Design, Manufacture, Selection, Application, and Installation, 2009
(``MSS SP-58''); IBR approved for Sec.  56.60-1.
    (9) MSS SP-61-2019, Pressure Testing of Valves, December 2019
(``MSS SP-61''); IBR approved for Sec.  56.60-1.
    (i) SAE International (SAE), 400 Commonwealth Drive, Warrendale, PA
15096,<PHONE_NUMBER>, www.sae.org.
    (1) SAE J1475 JUN2014, Hydraulic Hose Fitting for Marine
Applications, June 1, 2014 (``SAE J1475''); IBR approved for Sec.
56.60-25.
    (2) J1942 MAR2019, Hose and Hose Assemblies for Marine
Applications, Reaffirmed March 1, 2019 (``SAE J1942''); IBR approved
for Sec.  56.60-25.

Sec.  56.01-5   [Amended]

0
129. Amend Sec.  56.01-5 as follows:
0
a. In paragraph (a):
0
i. Remove the text ``46 CFR'' and add, in its place, the symbol ``Sec.
''; and
0
ii. Remove the text ``table 56.01-5(a)'' and add, in its place, the
text ``table Sec.  56.01-5(a)'';
0
b. Redesignate table 56.01-5(a) as table Sec.  56.01-5(a);
0
c. Redesignate paragraph (viii)(b) as paragraph (b); and
0
d. In paragraph (c):
0
i. Remove the text ``of this chapter''; and
0
ii. Remove the text ``46 CFR'' and add, in its place, the symbol
``Sec.  ''.
0
130. Amend Sec.  56.01-10 as follows:
0
a. In paragraph (a), remove the word ``shall'' and add, in its place,
the word ``must'';
0
b. Revise paragraph (b);
0
c. In the introductory text to paragraphs (c)(1) and (2), paragraph
(d)(1), and the introductory text to paragraphs (d)(2) and (3); remove
the word ``shall'' wherever it appears and add, in its place, the word
``must'';
0
d. Redesignate paragraph (d-1), (e) and (f) as paragraphs (e), (f), and
(g); and
0
e. In newly redesignated paragraph (f), remove the word ``shall'' and
add, in its place, the word ``must''.
    The revision reads as follows:

Sec.  56.01-10  Plan approval.

* * * * *
    (b) Piping materials and appliances, such as pipe, tubing,
fittings, flanges, and valves, except safety relief valves covered in
part 162 of subchapter Q (Specifications) of this chapter, are not
required to be specifically approved by

the Commandant, but must comply with the applicable requirements for
materials, construction, markings, and testing. These materials and
appliances must be certified as described in part 50 of this
subchapter. Drawings listing material specifications and showing
details of welded joints for pressure-containing appurtenances of
welded construction must be submitted in accordance with paragraph (a)
of this section.
* * * * *
0
131. Amend Sec.  56.04-1 as follows:
0
a. Revise introductory text to Sec.  56.04-1,; and
0
b. Redesignate table 56.04-1 as table Sec.  56.04-1.
    The revision reads as follows:

Sec.  56.04-1  Scope.

    Piping is classified as shown in table Sec.  56.04-1.
* * * * *

Sec.  56.04-2   [Amended]

0
132. Amend Sec.  56.04-2 as follows:
0
a. In the introductory text to Sec.  56.04-2, remove the text ``table
56.04-2'' and add, in its place, the text ``table Sec.  56.04-2''; and
0
b. Redesignate table 56.04-2 as table Sec.  56.04-2.
0
133. Amend Sec.  56.07-5 as follows:
0
a. In the introductory text to paragraph (a), remove the text ``46
CFR'' and add, in its place, the symbol ``Sec.  '';
0
b. Reserve paragraph (a)(1);
0
c. Revise paragraph (c); and
0
d. Remove paragraph (g).
    The revision reads as follows:

Sec.  56.07-5  Definitions (modifies 100.2).

* * * * *
    (c) Schedule. The word Schedule when used in this part generally
relates to the wall thickness of piping, and refers to specific values
as given in ASME B36.10M and B36.19M (both incorporated by reference;
see Sec.  56.01-2).
* * * * *
0
134. Amend Sec.  56.07-10 as follows:
0
a. In paragraph (a)(1), remove the text ``46 CFR'' and add, in its
place, the symbol ``Sec.  '';
0
b. In paragraph (a)(2), remove the word ``shall'' and add, in its
place, the word ``must'';
0
c. Revise paragraph (b)(1);
0
d. In paragraphs (b)(2) and (3), and (c), remove the word ``shall''
wherever it appears and add, in its place, the word ``must'';
0
e. Revise paragraph (d);
0
f. In paragraph (e)(1), remove the text ``tables 56.60-1 and'' and add,
in its place, the text ``tables 1 and 2 to Sec.  56.60-1 and table
Sec.  '';
0
g. Revise paragraphs (e)(2) and (3); and
0
h. In paragraph (f)(1), remove the word ``shall'' and add, in its
place, the word ``must''.
    The revisions read as follows:

Sec.  56.07-10  Design conditions and criteria (modifies 101-104.7).

* * * * *
    (b) * * *
    (1) Every system which may be exposed to pressures higher than the
system's maximum allowable working pressure must be safeguarded by
appropriate relief devices. Relief valves are required at pump
discharges except for centrifugal pumps so designed and applied that a
pressure in excess of the maximum allowable working pressure for the
system cannot be developed.
* * * * *
    (d) Ratings for pressure and temperature (modifies 102.2). The
material in 102.2 of ASME B31.1 applies, with the following exceptions:
    (1) The details of components not having specific ratings as
described in 102.2.2 of ASME B31.1 must be furnished to the Marine
Safety Center for approval.
    (2) Boiler blowoff piping must be designed in accordance with Sec.
56.50-40 of this part.
    (e) * * *
    (2) Allowable stress values, as found in the ASME BPVC, which are
restricted in application by footnote or are italicized must not be
used. Where multiple stresses are listed for a material, the lowest
value of the listing must be used unless otherwise approved by the
Commandant. In all cases the temperature is understood to be the actual
temperature of the component.
    (3) Where the operator desires to use a material not listed,
permission must be obtained from the Commandant. Requirements for
testing found in Sec.  56.97 may affect design and should be
considered. Special design limitations may be found for specific
systems. Refer to subpart 56.50 for specific requirements.
* * * * *

Sec.  56.10-1   [Amended]

0
135. Amend Sec.  56.10-1 as follows:
0
a. In paragraph (a), remove the word ``shall'' wherever it appears and
add, in its place, the word ``must''; and
0
b. In paragraph (b), remove the text ``46 CFR'' and add, in its place,
the symbol ``Sec.  ''.
0
136. Amend Sec.  56.10-5 as follows:
0
a. In paragraph (a):
0
i. Remove the word ``shall'' and add, in its place, the word ``must'';
and
0
ii. Remove the text ``table 56.60-1(a)'' and add, in its place, the
text ``table 1 to Sec.  56.60-1'';
0
b. Revise paragraphs (b) and (c)(1) and (2);
0
c. In paragraph (c)(3), remove the text ``46 CFR'' and add, in its
place, the symbol ``Sec.  '';
0
d. Revise paragraph (c)(4); and
0
e. In paragraph (c)(5), remove the word ``shall'' and add, in its
place, the word ``must''.
    The revisions read as follows:

Sec.  56.10-5  Pipe.

* * * * *
    (b) Ferrous pipe. ASTM A53/A53M (incorporated by reference, see
Sec.  56.01-2) furnace welded pipe must not be used for combustible or
flammable liquids within machinery spaces. (See Sec. Sec.  30.10-15 and
30.10-22 of this chapter for definitions of combustible and flammable
liquids.)
* * * * *
    (c) * * *
    (1) Copper and brass pipe for water and steam service may be used
for design pressures up to 250 psig and for design temperatures to 406
[deg]F.
    (2) Copper and brass pipe for air may be used in accordance with
the allowable stresses of the materials found from table 1 to Sec.
56.60-1.
* * * * *
    (4) Copper tubing may be used for instrument service up to 1,000
psig per square inch.
* * * * *
0
137. Amend Sec.  56.15-1 as follows:
0
a. In paragraph (a), add the words ``meeting the standards specified in
this part and'' after the word ``fittings'';
0
b. In paragraph (b):
0
i. Remove the text ``tables 56.60-1(a) and 56.60-1(b)'' and add, in its
place, the text ``tables 1 and 2 to Sec.  56.60-1''; and
0
ii. Remove the words ``pounds per square inch gage'' and add, in their
place, the text ``psig'';
0
c. Revise paragraph (c)(2);
0
d. In paragraph (c)(4)(ii)(B), remove the text ``section VIII of the
ASME Boiler and Pressure Vessel Code'' and add, in its place, the text
``Section VIII of the ASME BPVC''; and
0
e. In paragraph (e), remove the text ``46 CFR'' and add, in its place,
the symbol ``Sec.  ''.
    The revision reads as follows:

Sec.  56.15-1  Pipe joining fittings.

* * * * *
    (c) * * *
    (2) The maximum allowable working pressure may be determined by--
    (i) Calculations comparable to those of ASME B31.1 (incorporated by
reference;

see Sec.  56.01-2) or Section VIII of the ASME BPVC (incorporated by
reference; see Sec.  56.01-2);
    (ii) Subjecting a representative model to a proof test or
experimental stress analysis described in paragraph A-22 of Section I
of the ASME BPVC (incorporated by reference; see Sec.  56.01-2); or
    (iii) Other means specifically accepted by the Marine Safety
Center.
* * * * *
0
138. Revise Sec.  56.15-5 to read as follows:

Sec.  56.15-5  Fluid-conditioner fittings.

    (a) Fluid-conditioner fittings meeting the standards of this part
and certified in accordance with subpart 50.25 of this subchapter are
acceptable for use in piping systems.
    (b) Fluid-conditioner fittings made in accordance with the
applicable standards listed in table 2 to Sec.  56.60-1 of this part
and of materials complying with subpart 56.60 of this part, may be used
within the material, size, fluid, pressure, and temperature limitations
of those standards and within any further limitations specified in this
subchapter.
    (c) The maximum allowable working pressure may be determined in
accordance with Sec.  56.15-1(c) of this part.
    (d) If welded, nonstandard fluid-conditioner fittings must be
welded in accordance with subpart 56.70 of this part and part 57 of
this chapter or by other processes specifically approved by the Marine
Safety Center.
    (e) Heat exchangers having headers and tubes, and brazed boiler
steam air heaters, are not considered fluid-conditioner fittings and
must meet the requirements in part 54 of this chapter regardless of
size. For brazed boiler steam air heaters, see also Sec.  56.30-
30(b)(1) of this part.

Sec.  56.15-10   [Amended]

0
139. Amend Sec.  56.15-10 as follows:
0
a. Remove paragraph (a);
0
b. Redesignate paragraphs (b) and (c) as paragraphs (a) and (b); and
0
c. In newly redesignated paragraph (a), remove the text ``table 56.60-
1(b)'' and add, in its place, the text ``table 2 to Sec.  56.60-1''.
0
140. Amend Sec.  56.20-1 as follows:
0
a. In paragraph (c)(1), remove the text ``pressure-containing'';
0
b. Revise paragraphs (c)(2) and (3); and
0
c. Remove paragraph (d).
    The revisions read as follows:

Sec.  56.20-1  General.

* * * * *
    (c) * * *
    (2) The maximum allowable working pressure may be determined by
Sec.  56.15-1(c)(2) of this part.
    (3) Valves must be tested in accordance with the requirements of
the applicable incorporated standard or Sec.  56.97 of this part.
* * * * *
0
141. Revise Sec.  56.20-5 to read as follows:

Sec.  56.20-5  Marking (modifies 107.2).

    Each valve marking must be in accordance with MSS SP-25
(incorporated by reference; see Sec.  56.01-2).

Sec.  56.20-7   [Amended]

0
142. In Sec.  56.20-7, reserve paragraph (b).
0
143. Revise Sec.  56.20-9 to read as follows:

Sec.  56.20-9  Valve construction.

    (a) Each valve must close with a right-hand (clockwise) motion of
the handwheel or operating lever as seen by one facing the end of the
valve stem. Each nonrising-stem valve, lever-operated valve, or other
valve where, because of design, the position of the disc or closure
mechanism is not obvious must be fitted with an indicator to show
whether the valve is opened or closed. No such indicator is required
for any valve located in a tank or similar inaccessible space when
indicators are available at accessible sites. The operating levers of
quarter-turn valves must be parallel to the fluid flow when open and
perpendicular to the fluid flow when closed.
    (b) Valves of Class I piping systems having diameters exceeding 2
inches must have bolted, pressure seal, or breech lock bonnets and
flanged or welding ends. Socket type welding ends must meet Sec.
56.30-5(c) and Sec.  56.30-10(b)(4). For diameters not exceeding 2
inches, screwed union bonnet or bolted bonnet, or bonnetless valves
which prevent the stem from screwing out of the body may be employed.
Outside screw and yoke design must be used for valves 3 inches and
larger for pressures above 600 psig. Cast iron valves with screwed-in
or screwed-over bonnets are prohibited. Union bonnet type cast iron
valves must have the bonnet ring made of steel, bronze, or malleable
iron.
    (c) Valves must be designed for the maximum pressure to which they
may be subjected, but in no case must the design pressure be less than
50 psig. The use of wafer type resilient seated valves is subject to
the requirements of Sec.  56.20-15.
    (d) Disks or disk faces, seats, stems and other wearing parts of
valves must be made of material possessing corrosion and heat-resisting
qualities suitable for the service conditions to which they may be
subjected.
    (e) Plug cocks must be constructed with satisfactory and positive
means of preventing the plug from becoming loosened or removed from the
body when the plug is operated.
    (f) Cocks must be marked in a straight line with the body to
indicate whether they are open or closed.
0
144. Revise Sec.  56.20-15 to read as follows:

Sec.  56.20-15  Valves employing resilient material.

    (a) A valve in which the closure is accomplished by resilient
nonmetallic material instead of a metal to metal seat must comply with
the design, material, construction and testing for valves specified in
this section.
    (b) Valves employing resilient material are divided into three
categories: Positive shutoff, Category A, and Category B, and must be
tested and used as follows:
    (1) Positive shutoff valves. The closed valve must pass less than
10 ml/hr (0.34 fluid oz/hr) of liquid, or less than 3 l/hr (0.11 cubic
ft/hr) of gas per inch nominal pipe size through the line at full rated
pressure after being subjected to the fire test requirements of API 607
(incorporated by reference; see Sec.  56.01-2). Packing material must
be fire resistant. Piping subject to internal head pressure from a tank
containing oil must be fitted with positive shutoff valves located at
the tank in accordance with Sec.  56.50-60(d). Positive shutoff valves
may be used in any location in lieu of a Category A or Category B
valve.
    (2) Category A valves. Category A valves may be used in any
location except where positive shutoff valves are required by Sec.
56.50-60(d). To be qualified as a Category A valve, the valve must meet
the fire test and leakage requirements of API 607.
    (i) Category A valves are required at vital piping system
manifolds;
    (ii) Category A valves must be used in isolation valves in cross-
connects between two piping systems, at least one of which is a vital
system, where failure of the valve in a fire would prevent the vital
system(s) from functioning as designed, and
    (iii) Category A valves must be used for valves providing closure
for any opening in the shell of the vessel.
    (3) Category B valves. The closed valve will not provide effective
closure of the line or will permit appreciable leakage from the valve
after the resilient material is damaged or destroyed. Category B valves
are not required to be

tested and may be used in any location except where a Category A or
positive shutoff valve is required.
    (c) Resiliently seated valves previously accepted by the Commandant
or the Marine Safety Center may continue to be used within the service
restrictions of their acceptance.

Sec.  56.20-20  [Amended]

0
145. Amend Sec.  56.20-20 as follows:
0
a. In paragraph (a):
0
i. Remove the word ``shall'' and add, in its place, the word ``must'';
and
0
ii. Remove the text ``46 CFR'' and add, in its place, the symbol
``Sec.  ''; and
0
b. Remove paragraph (c).
0
146. Revise Sec.  56.25-5 to read as follows:

Sec.  56.25-5  Flanges.

    Each flange must conform to the design requirements of either the
applicable standards of table 2 to Sec.  56.60-1, or of those of
Appendix 2 of Section VIII of the ASME BPVC (incorporated by reference;
see Sec.  56.01-2). Plate flanges must meet the requirements of Sec.
56.30-10(b)(5). Flanges may be integral or may be attached to pipe by
threading, welding, brazing, or other means within the applicable
standards specified in table 2 to Sec.  56.60-1.
0
147. Revise Sec.  56.25-10 to read as follows:

Sec.  56.25-10  Flange facings.

    Flange facings must be in accordance with the applicable standards
listed in table 2 to Sec.  56.60-1 and MSS SP-6 (incorporated by
reference; see Sec.  56.01-2).

Sec.  56.25-15  [Amended]

0
148. Amend Sec.  56.25-15 as follows:
0
a. In paragraph (a), remove the word ``shall'' and add, in its place,
the word ``must'';
0
b. In paragraph (b), remove the text ``table 56.60-1(b) of this part''
and add, in its place, the text ``table 2 to Sec.  56.60-1''; and
0
c. In paragraph (c), remove the words ``pounds per square inch'' and
add, in their place, the text ``psig''.
0
149. Amend Sec.  56.25-20 as follows:
0
a. In the introductory text to paragraph (a), remove the subject
heading;
0
b. Revise paragraphs (a)(1), (b), (c), and (d); and
0
c. In paragraph (e), remove the word ``shall'' and add, in its place,
the word ``must''.
    The revisions read as follows:

Sec.  56.25-20  Bolting.

    (a) * * *
    (1) Bolts, studs, nuts, and washers must comply with applicable
standards and specifications listed in Sec.  56.60-1. Bolting must be
in accordance with ASME B16.5 (incorporated by reference; see Sec.
56.01-2).
* * * * *
    (b) Carbon steel bolts or bolt studs may be used if operating
pressure does not exceed 300 psig and the operating temperature does
not exceed 400 [deg]F. Carbon steel bolts must have heavy hexagon heads
in accordance with ASME B18.2.1 (incorporated by reference, see Sec.
56.01-2) and must have heavy semifinished hexagonal nuts in accordance
with ASME B18.2.2 (incorporated by reference, see Sec.  56.01-2).
    (c) Alloy steel stud bolts must be threaded full length and use
heavy semifinished hexagonal nuts in accordance with ASME B18.2.2.
    (d) Alloy bolts or studs and nuts are to be threaded in accordance
with ASME B1.1 (incorporated by reference; see Sec.  56.01-2), Class 2A
external threads, and Class 2B internal threads (8-thread series 8UN
for one inch and larger).
* * * * *

Sec.  56.30-3   [Amended]

0
150. In Sec.  56.30-3, remove the word ``shall'' wherever it appears
and add, in its place, the word ``must''.
0
151. Amend Sec.  56.30-5 as follows:
0
a. In paragraphs (b)(1) and (2), remove the word ``shall'' wherever it
appears and add, in its place, the word ``must'';
0
b. In paragraph (b)(3), remove the text ``46 CFR'' and add, in its
place, the symbol ``Sec.  '';
0
c. Revise paragraph (c);
0
d. In paragraph (d), remove the first sentence; and
0
e. In paragraph (e), remove the word ``shall'' and add, in its place,
the word ``must''.
    The revision reads as follows:

Sec.  56.30-5  Welded joints.

* * * * *
    (c) Socket welds (Modifies 127.3.3A.). (1) Each socket weld must
conform to ASME B16.11 (incorporated by reference; see Sec.  56.01-2),
to applicable standards listed in table 2 to Sec.  56.60-1, and to
Figure 127.4.4C in ASME B31.1 (incorporated by reference; see Sec.
56.01-2) as modified by Sec.  56.30-10(b)(4).
    (2) Restrictions on the use of socket welds appear in Sec.  56.70-
15(d)(3) for Class I service and in Sec.  56.50-105 for low temperature
service. See Sec.  56.70-15(d)(4) for Class II service.
* * * * *
0
152. Amend Sec.  56.30-10 as follows:
0
a. Revise the introductory text to paragraph (b);
0
b. In paragraph (b)(1), remove the text ``Figure 56.30-10(b)'' and add,
in its place, the text ``Figure Sec.  56.30-10(b)''; and ii. Remove the
text ``46 CFR 56.30-20, table '' and add, in its place, the text
``table Sec. '';
0
c. Revise paragraphs (b)(2) through (7);
0
d. In paragraph (b)(8):
0
i. Revise the subject heading;
0
ii. Remove the text ``Figure 56.30-10(b)'' and add, in its place, the
text ``figure Sec.  56.30-10(b)''; and
0
iii. remove the text ``46 CFR'' and add, in its place, the symbol
``Sec. '';
0
e. In paragraph (b)(9):
0
i. Revise the subject heading; and
0
ii. Remove the text ``Figure 56.30-10(b)'' and add, in its place, the
text ``figure Sec.  56.30-10(b)'';
0
f. Revise paragraphs (b)(10) through (12);
0
g. In paragraph (b)(13),
0
i. Revise the subject heading; and
0
ii. Remove the text ``Figure 56.30-10(b)'' and add, in its place, the
text ``figure Sec.  56.30-10(b)'';
0
h. Revise paragraph (b)(14);
0
i. In paragraph (b)(13):
0
i. Revise the subject heading;
0
ii. Remove the text ``Figure 56.30-10(b)'' and add, in its place, the
text ``figure Sec.  56.30-10(b)''; and
0
j. Designate the figure immediately following paragraph (b) as figure
Sec.  56.30-10(b) and redesignate note to Figure 56.30-10(b) as note 1
to figure Sec.  56.30-10(b).
    The revisions read as follows:

Sec.  56.30-10  Flanged joints (modifies 104.5.1(a)).

* * * * *
    (b) Flanges may be attached by any method shown in figure Sec.
56.30-10(b) or by any means approved by the Marine Safety Center.
Pressure temperature ratings of the appropriate ASME standard must not
be exceeded.
    (1) Figure Sec.  56.30-10(b), Method 1.* * *
    (2) Figure Sec.  56.30-10(b), Method 2. ASME B16.5 (incorporated by
reference; see Sec.  56.01-2) Class 150 and Class 300 low-hubbed
flanges with screw threads, plus the addition of a strength fillet weld
of the size as shown, may be used in Class I systems not exceeding 750
[deg]F or 4 NPS, in Class II systems, and in Class II-L systems not
exceeding 1 NPS. If 100 percent radiography is required by Sec.  56.95-
10 threaded flanges are not permitted and buttwelding flanges must be
provided.
    (3) Figure Sec.  56.30-10(b), Method 3. Slip-on flanges meeting
ASME B16.5 may be used in piping systems of Class

I, Class II, or Class II-L not to exceed the service pressure-
temperature ratings, and not to exceed 4-inch Nominal Pipe Size (NPS)
in systems of Class I and Class II-L. If 100 percent radiography is
required by Sec.  56.95-10, slip-on flanges are not permitted and butt-
welding flanges are required. Restrictions on the use of slip-on
flanges appear in Sec.  56.50-105 for low-temperature piping systems.
    (4) Figure Sec.  56.30-10(b), Method 4. ASME B16.5 socket welding
flanges may be used in Class I or II-L systems not exceeding 3 NPS for
class 600 and lower class flanges and 21/2NPS for class 900 and class
1500 flanges within the service pressure-temperature ratings of the
standard. Whenever full radiography is required by Sec.  56.95-10
socket welding flanges are not permitted and a butt weld type
connection must be provided. For Class II piping, socket welding
flanges may be used without diameter limitation. Restrictions on socket
welds appear in Sec.  56.50-105 for low temperature piping systems.
    (5) Figure Sec.  56.30-10(b), Method 5. Flanges fabricated from
steel plate meeting the requirements of part 54 of this chapter may be
used for Class II piping for pressures not exceeding 150 psig per
square inch and temperatures not exceeding 450 [deg]F. Plate material
listed in UCS-6(b) of Section VIII of the ASME BPVC (incorporated by
reference; see Sec.  56.01-2) may not be used in this application,
except that material meeting ASTM A36/A36M (incorporated by reference;
see Sec.  56.01-2) may be used. The fabricated flanges must conform at
least to the ASME B16.5 class 150 flange dimensions.
    (6) Figure Sec.  56.30-10 (b), Method 6. Steel plate flanges
meeting the material and construction requirements listed in paragraph
(b)(5) of this section may be used for Class II piping for pressures
not exceeding 150 psig or temperatures not exceeding 650 [deg]F. The
flange must be attached to the pipe as shown by figure Sec.  56.30-
10(b), Method 6.
    (7) Figure Sec.  56.30-10 (b), Method 7. Lap joint flanges (Van
Stone) may be used for Class I and Class II piping. The ends of the
pipe must be heated from 1,650[deg] to 1,900 [deg]F based on the size
of the pipe. Extra thickness of metal built up in the end of the pipe
must be machined to restore the pipe to its original diameter. The
width of the lap flange must be at least three times the thickness of
the pipe wall and the end of the pipe must be properly stress relieved
after the flanging operation is completed. Manufacturers desiring to
produce this type of joint must demonstrate to a marine inspector that
they have the proper equipment and personnel to produce an acceptable
joint.
    (8) Figure Sec.  56.30-10(b), Method 8.* * *
    (9) Figure Sec.  56.30-10(b), Method 9.* * *
    (10) Figure Sec.  56.30-10 (b), Method 10. Flanges may be attached
by shrinking the flange on to the end of the pipe and flaring the end
of the pipe to an angle of not less than 20[deg]. A fillet weld of the
size shown by figure Sec.  56.30-10(b), Method 10, must be used to
attach the hub to the pipe. This flange is limited to a pressure of 300
psig and a temperature not exceeding of 500 [deg]F.
    (11) Figure Sec.  56.30-10(b), Method 11. The flange of the type
described and illustrated by figure Sec.  56.30-10(b), Method 10,
except with the fillet weld omitted, may be used for Class II piping
not exceeding 150 psig and temperatures not exceeding 450 [deg]F.
    (12) Figure Sec.  56.30-10(b), Method 12. High-hub bronze flanges
may be used for temperatures not exceeding 425 [deg]F. A preinserted
ring of silver brazing alloy having a melting point not less than 1,000
[deg]F must be inserted into the groove. A suitable flux must be
applied to the surfaces to be joined to produce a satisfactory joint.
    (13) Figure Sec.  56.30-10(b), Method 13.* * *
    (14) Figure Sec.  56.30-10(b), Method 14. Flanges may be attached
to nonferrous pipe by inserting the pipe in the flange and flanging the
end of the pipe into the recess machined in the face of the flange to
receive it. The pipe must be securely brazed to the wall of the flange.
    (15) Figure Sec.  56.30-10(b), Method 15.* * *
* * * * *
0
153. Amend Sec.  56.30-20 as follows:
0
a. In paragraph (b):
0
i. Remove the text ``Reproduces'' and add, in its place, the text
``Modifies''; and
0
ii. Remove the text ``46 CFR 56.60-1, table 56.60-1(b)'' and add, in
its place, the text ``table 2 to Sec.  56.60-1'';
0
b. In paragraph (c), remove the text ``table 56.30-20(c)'' and add, in
its place, the text ``table Sec.  56.30-20(c)'';
0
c. Redesignate table 56.30-20(c) as table Sec.  56.30-20(c);
0
d. In note 2 to newly redesignated table Sec.  56.30-20(c) remove the
text ``when commercially available components such as pumps, valves and
strainers may only be obtained with threaded connections''; and
0
e. Revise paragraph (d).
    The revision reads as follows:

Sec.  56.30-20  Threaded joints.

* * * * *
    (d) No pipe with a wall thickness less than that of standard weight
of ASME B36.10M (incorporated by reference; see Sec.  56.01-2) steel
pipe may be threaded. For restrictions on the use of pipe in steam
service more than 250 psig or water service over 100 psig and 200
[deg]F (938C), see part 104.1.2(c)(1) of ASME B31.1 (incorporated by
reference; see Sec.  56.01-2).

Sec.  56.30-25  [Amended]

0
154. Amend Sec.  56.30-25 as follows:
0
a. In paragraph (a):
0
i. Remove the text ``F 1387'' and add, in its place, the text
``F1387''; and
0
ii. Remove the words ``as long as they are maintained in good
condition''; and
0
b. In paragraph (d), remove the words ``or reducing the wall
thickness''.

Sec.  56.30-27   [Amended]

0
155. Amend Sec.  56.30-27 by removing the words ``in marine
installations''.
0
156. Amend Sec.  56.30-30 by revising paragraphs (a) and (b)(1) to read
as follows:

Sec.  56.30-30   Brazed joints.

    (a) General (refer also to subpart 56.75). The minimum socket depth
must be sufficient for the intended service. Brazing alloy must either
be end-fed into the socket or must be provided in the form of a
preinserted ring in a groove in the socket. The brazing alloy must be
sufficient to fill completely the annular clearance between the socket
and the pipe or tube.
    (b) * * *(1) Brazed socket-type joints must not be used on systems
containing flammable or combustible fluids in areas where fire hazards
are involved or where the service temperature exceeds 425 [deg]F.
Higher temperature service must be approved by the Commandant.
* * * * *

Sec.  56.30-35  [Amended]

0
157. Amend Sec.  56.30-35 as follows:
0
a. In paragraph (a):
0
i. Remove the text ``F 1476'' and add, in its place, the text
``F1476'';
0
ii. Remove the text ``F 1548'' and add, in its place, the text
``F1548''; and
0
iii, Remove the words ``as long as they are maintained in good
condition'';b. In paragraph (b)(1), remove the words ``disable the
vessel'' and add, in their place, the word ``occur''; and
0
c. In paragraph (c), remove the words ``do not provide positive
protection against creep and''.
0
158. Amend Sec.  56.30-40 as follows:
0
a. Revise paragraph (b);
0
b. Remove paragraph (c);
0
c. Redesignate paragraphs (d) through (h) as paragraphs (c) through
(g);
0
d. In newly redesignated paragraph (c), remove the word ``shall''
wherever it appears and add, in its place, the word ``must'';

0
e. In newly redesignated paragraph (d), remove the text ``table 56.60-
1(b) of this part'' and add, in its place, the text ``table 2 to Sec.
56.60-1'';
0
f. Revise newly redesignated paragraph (e); and
0
g. In newly redesignated paragraphs (f) and (g), remove the word
``shall'' wherever it appears and add, in its place, the word ``must''.
    The revisions read as follows:

Sec.  56.30-40  Flexible pipe couplings of the compression or slip-on
type.

* * * * *
    (b) Positive means must also be provided to prevent the coupling
from ``creeping'' on the pipe and uncovering the joint. Bite type
devices are not generally accepted for this purpose. Machined grooves
or centering pins are considered positive means.
* * * * *
    (e) Flexible couplings must not be used in cargo holds or in any
other space where leakage, undetected flooding, or impingement of
liquid on vital equipment may occur, or in tanks where the liquid
conveyed in the piping system is not compatible with the liquid in the
tank.
* * * * *
0
159. Amend Sec.  56.35-1 as follows:
0
a. Revise paragraph (a); and
0
b. In paragraph (b), remove the text ``46 CFR'' wherever it appears and
add, in its place, the symbol ``Sec.  ''.
    The revision reads as follows:

Sec.  56.35-1  Pipe stress calculations (replaces 119.7).

    (a) A summary of the results of pipe stress calculations for the
main and auxiliary steam piping where the design temperatures exceed
800 [deg]F must be submitted for approval. Calculations must be made in
accordance with a method of stress analysis acceptable to the Marine
Safety Center to determine the forces at all terminal connections,
anchor and junction points, as well as the resultant bending stress,
longitudinal pressure stress, torsional stress, and combined expansion
stress at all such points. The location of the maximum combined stress
must be indicated in each run of pipe between anchor points.
* * * * *

Sec.  56.35-10  [Amended]

0
160. Amend Sec.  56.35-10 as follows:
0
a. Remove paragraph (a);
0
b. Redesignate paragraph (b) as paragraph (a) and reserve new paragraph
(b); and
0
c. In newly redesignated paragraph (a):
0
i. Remove the word ``piping''; and
0
ii. Remove the text ``table 56.60-1(b) of this part'' and add, in its
place, the text ``table 2 to Sec.  56.60-1''.
0
161. Revise Sec.  56.35-15 to read as follows:

Sec.  56.35-15   [Amended]

    Metallic expansion joints must conform to the standards listed in
table 2 to Sec.  56.60-1 and may be used within their specified
pressure and temperature rating.
0
162. Revise Sec.  56.50-1 to read as follows:

Sec.  56.50-1  General (replaces 122).

    The requirements in this subpart for piping systems apply instead
of those in Section 122 of ASME B31.1 (incorporated by reference; see
Sec.  56.01-2). The following installation requirements are applicable
to all systems:
    (a) Where pipes and scuppers are carried through watertight or
oiltight bulkheads, decks or tank tops, or are carried through fire
control bulkheads and decks, the integrity of the structure must be
maintained. Lead or other heat sensitive materials must not be used in
piping systems in bulkhead or deck penetrations where fire would impair
the integrity of the penetration. (For nonmetallic or plastic pipe
installations, see Sec.  56.60-25(a).) Openings in structure through
which pipes pass must be reinforced where necessary. Metallic materials
having a melting point of 1,700 [deg]F or less are considered heat
sensitive and if used must be suitably insulated.
    (b)(1) Pipes piercing the collision bulkhead must be fitted with
valves operable from above the bulkhead deck and the valve must be
fitted inside the forepeak tank adjacent to the collision bulkhead. The
pipe penetrating the collision bulkhead must be welded to the bulkhead
on both sides. The valve body must be of steel or ductile cast iron.
    (2) Passenger vessels must not have the collision bulkhead pierced
below the margin line by more than one pipe conveying liquids in the
forepeak tank.
    (c) Valves and cocks not forming part of a piping system are not
permitted in watertight subdivision bulkheads. However, sluice valves
or gates in oiltight bulkheads of tankships may be used if approved by
the Marine Safety Center.
    (d) Piping must generally not be run over switchboards, and must be
installed as far away from other electrical equipment as practicable.
When such leads are necessary, provision must be made to prevent
leakage from damaging the equipment.
    (e) Stuffing boxes must not be used on deep tank bulkheads, double
bottoms or in any position where they cannot be easily examined. This
requirement does not apply to ore carriers operating on the Great Lakes
or cargo lines of oil tankers.
    (f) Piping systems must be installed so that under no condition
will the operation of safety or relief valves be impaired.
    (g)(1) Power actuated valves may be used if approved for the system
by the Marine Safety Center. All power actuated valves must have a
backup manual means of operation.
    (2)(i) Remote valve controls must be fitted with nameplates
describing the applicable system.
    (ii) Remote valve controls must be accessible under normal service
conditions.
    (iii) Remote valve controls, except reach rods, must be fitted with
indicators that show whether the valves they control are open or
closed. Valve position indicating systems must be independent of valve
control systems.
    (iv) Valve reach rods must be adequately protected.
    (v) Solid reach rods must be used in tanks containing liquids,
except that reach rods of constructed of extra-heavy pipe may be
considered acceptable by the OCMI.
    (3) Air-operated remote control valves must be provided with self-
indicating lines at the control boards that indicate the desired valve
positions, such as open or closed.
    (h) Suitable drains must be provided at low points of piping
systems.
    (i) Valves and cocks must be easily accessible. Valves attached to
the shell of the vessel or to sea chests located below deck plating
must be operable from above the deckplates.
    (j) When welded fabrication is employed, a sufficient number of
detachable joints must be provided to facilitate maintenance of
machinery.
    (k) Piping systems used where the fluid temperature exceeds 150
[deg]F must be suitably insulated as necessary to preclude injury to
personnel.
    (l) Where pipes are run through dry cargo spaces they must be
protected from mechanical injury by a suitable enclosure or other
means.
0
163. Amend Sec.  56.50-10 by revising paragraph (b) to read as follows:

Sec.  56.50-10  Special gauge requirements.

* * * * *
    (b) Fuel oil service and transfer, fire, cargo and boiler feed
pumps must be provided with a discharge pressure gage. Additional
information pertaining to fire pumps is in Sec.  34.10-5 of

subchapter D (Tank Vessels), Sec.  76.10-5 of subchapter H (Passenger
Vessels), Sec.  95.10-5 of subchapter I (Cargo and Miscellaneous
Vessels), and Sec.  108.417 of subchapter IA (Mobile Offshore Drilling
Units), all of this chapter.
0
164. Amend Sec.  56.50-15 as follows:
0
a. In paragraph (a), remove the word ``shall'' wherever it appears and
add, in its place, the word ``must'';
0
b. Revise paragraphs (b) and (c);
0
c. In paragraph (d), remove the word ``shall'' and add, in its place,
the word ``must'';
0
d. Revise paragraphs (f), (g), (h)(2) and (3), and (i);
0
e. In paragraph (j), remove the word ``shall'' and add, in its place,
the word ``must''; and
0
f. Revise paragraph (k).
    The revisions read as follows:

Sec.  56.50-15  Steam and exhaust piping.

* * * * *
    (b) Main superheater outlet piping systems, desuperheated piping
systems, and other auxiliary superheated piping systems led directly
from the boiler superheater must be designed for a pressure not less
than the pressure at which the superheater safety valve is set. In the
case of a superheated safety valve which is drum pilot actuated, the
design pressure of such piping systems must not be less than the
pressure setting of the actuator valve on the drum. Valves and fittings
must be selected for the above systems from the accepted standards in
table 1 to 56.60-1, using the pressure-temperature rating in the
standard.
    (c) Steam stop valves in sizes exceeding 6 inches must be fitted
with bypasses.
* * * * *
    (f) The auxiliary steam piping of each vessel equipped with more
than one boiler must be so arranged that steam for the whistle and
vital auxiliary systems may be supplied from any power boiler.
    (g) Steam and engine exhaust pipes must not be led through coal
bunkers or dry cargo spaces.
    (h) * * *
    (2) The pressure in steam heating systems must not exceed 150 psig,
and the steam pressure for accommodation and public space heating must
not exceed 45 psig.
    (3) Steam lines must be suitably located and shielded to minimize
hazards to any personnel within the space.
* * * * *
    (i) Where the exhaust side of machinery is not designed for the
full inlet pressure, the exhaust side must be protected from over
pressure by one of the following means:
    (1) A relief valve in the exhaust side with appropriate set
pressure and sufficient capacity to prevent the exhaust side from
overpressure.
    (2) A sentinel valve or other warning device fitted on the exhaust
side, together with a trip device, which will close the inlet valve.
* * * * *
    (k) Means must be provided for draining every steam pipe in which
water hammer might occur.
0
165. Amend Sec.  56.50-20 as follows:
0
a. Revise paragraph (a);
0
b. In paragraph (b), remove the word ``shall'' and add, in its place,
the word ``must''; and
0
c. In paragraph (c), remove the words ``specifically provided for in
other regulations or as''.
    The revision reads as follows:

Sec.  56.50-20  Pressure relief piping.

    (a) General. There must be no intervening stop valves between the
pressure vessel or piping system being protected and its protective
device or devices, except as authorized by the Marine Safety Center.
* * * * *
0
166. Revise Sec.  56.50-25 to read as follows:

Sec.  56.50-25  Safety and relief valve escape piping.

    (a) Escape piping from safety valves must have an area of not less
than that of the combined areas of the outlets of all valves
discharging thereto and must be led as near vertically as practicable
to the atmosphere.
    (b) Expansion joints or flexible pipe connections must be fitted in
escape piping. The piping must be adequately supported so that no
stress is transmitted to the safety valve body.
    (c) Safety or relief valve discharges, when permitted to terminate
in the machinery space, must be led below the floorplates or to a
remote position.
    (d) The back pressure effect of the escape piping on the operation
of the relief device must be considered.
0
167. Amend Sec.  56.50-30 as follows:
0
a. In paragraph (a)(1), remove the word ``shall'' wherever it appears
and add, in its place, the word ``must'';
0
b. Revise paragraphs (a)(3) and (4), and (b), the subject heading to
paragraph (c), and paragraphs (c)(1) and (2);
0
c. In the introductory text to paragraph (d), remove the word ``shall''
and add, in its place, the word ``must'';
0
d. Revise paragraphs (d)(1) and (2);
0
e. In paragraph (d)(3) and the introductory text to paragraph (e),
remove the word ``shall'' wherever it appears and add, in its place,
the word ``must'';
0
f. Revise paragraph (e)(1);
0
g. In paragraph (e)(2), remove the word ``shall'' wherever it appears
and add, in its place, the word ``must''; and
0
h. Revise paragraph (f).
    The revisions read as follows:

Sec.  56.50-30  Boiler feed piping.

    (a) * * *
    (3) Feed discharge piping from the pump up to, but not including
the required stop and stop-check valves, must be designed for either
the feed pump relief valve setting or the shutoff head of the pump if a
relief valve is not fitted. (Refer to Sec.  56.07-10(b) for specific
requirements.) Feed piping from the boiler, to and including the
required stop and stop-check valves (see paragraph (b) of this
section), must have a design pressure which exceeds the maximum
allowable working pressure of the boiler by either 25 percent or 225
psig, whichever is less. The value of allowable stress for design
purposes must be selected as described in Sec.  56.07-10(e) at a
temperature not below that for saturated steam at the maximum allowable
working pressure of the boiler.
    (4) Feed pumps for water tube boilers must have freshwater
connections only.
    (b) Feed valves. (1) Stop and stop-check valves must be fitted in
the main feed line and must be attached as closely as possible to drum
inlets or to the economizer inlet.
    (2) Auxiliary feed lines must be fitted with stop valves and stop-
check valves.
    (3) Boilers fitted with economizers must have a check valve fitted
in the economizer discharge and located as close as possible to the
drum feed inlet nozzle.
    (c) Feed water regulators and heaters. (1) Where feed water
regulators or feed water heaters are installed, an alternate means of
operation with these devices bypassed must be provided.
    (2) All feed water regulators installed in a unit feed system must
be fitted with an external bypass.
* * * * *
    (d) * * *
    (1) Vessels having a feed pump attached to the main propulsion unit
must be provided with at least one independently driven feed pump. Each
of these pumps must be used exclusively for feed purposes and must be
capable of supplying the operating boilers at their normal capacity. In
addition, a second independently driven pump, capable of supplying such
boilers at 75 percent of their normal capacity, must be provided.

    (2) If two independently driven pumps are provided, each capable of
supplying the boilers at their normal required operating capacity, and
neither pump is used for other purposes, the third or emergency feed
pump is not required.
* * * * *
    (e) * * *
    (1) The unit feed system may be used on vessels having two or more
boilers. When the unit feed system is employed each boiler must have
its own independently driven main feed pump capable of supplying the
boiler at its normal operating capacity. In addition, there must be an
auxiliary independent feed pump of the same capacity that can be
operated in place of and in conjunction with the main feed pump. In
vessels with three or more boilers, not more than two boilers may be
served by any one auxiliary pump. The auxiliary pump may be so
interconnected that any pump can feed any boiler.
* * * * *
    (f) Feedwater. The feedwater must be introduced into a boiler as
required by Sec.  52.01-105(d) of this subchapter.
0
168. Revise Sec.  56.50-35 to read as follows:

Sec.  56.50-35  Condensate pumps.

    Two means must be provided for discharging the condensate from the
main condenser, one of which must be independent of the main propelling
machinery.
0
169. Amend Sec.  56.50-40 as follows:
0
a. In paragraph (a)(1), remove the text ``46 CFR'' and add, in its
place, the symbol ``Sec.  '';
0
b. In paragraph (a)(2), remove the word ``shall'' and add, in its
place, the word ``must'';
0
c. Revise paragraph (b);
0
d. In paragraph (c), remove the word ``shall'' and add, in its place,
the word ``must''; and
0
e. Revise paragraph (d).
    The revisions read as follow:

Sec.  56.50-40  Blowoff piping (replaces 122.1.4).

* * * * *
    (b) Blowoff must be designed for not less than 125 percent of the
maximum allowable working pressure of the boiler, or the maximum
allowable working pressure of the boiler plus 225 psig, whichever is
less. The value of allowable stress for design purposes must be
selected as described in Sec.  56.07-10(e) at a temperature not below
that of saturated steam at the maximum allowable working pressure of
the boiler.
* * * * *
    (d) Globe valves must not be used for blowoff service.

Sec.  56.50-45   [Amended]

0
170. Amend Sec.  56.50-45 as follows:
0
a. In paragraphs (a) and (b), remove the word ``shall'' wherever it
appears and add, in its place, the word ``must''; and
0
b. Remove paragraph (d).
0
171. Amend Sec.  56.50-50 as follows:
0
a. Revise paragraphs (a), (b), and (c)(1);
0
b. In paragraph (c)(2), remove the text ``SOLAS II-1/21'' and add the
text ``SOLAS Chapter II-1, Regulation 35-1'' in its place;
0
c. Revise paragraph (c)(3)(iii);
0
d. In paragraph (c)(3)(iv), remove the words ``for both manual
operation and repair'';
0
e. In paragraph (c)(3)(vi), remove the text ``(O/B/O)'';
0
f. Revise the introductory text to paragraph (d);
0
g. Designate the formula immediately following paragraph (d)(1) as
Formula 1 to 56.50-50(d) and the formula immediately following
paragraph (d)(2) as Formula 2 to 56.50-50(d), so that they appear
immediately following the introductory text to paragraph (d);
0
h. Revise paragraph (d)(1);
0
i. In paragraph (d)(2), remove the text ``For branch suctions to cargo
and machinery spaces:'' and add, in its place, the text ``The following
``where'' clause applies to Formulas 1 and 2 to 56.50-50(d):'';
0
j. Designate Notes 1 through 6 as Note 1 to paragraph (d)(2), Note 2 to
paragraph (d)(2), Note 3 to paragraph (d)(2), Note 4 to paragraph
(d)(2), Note 5 to paragraph (d)(2),and Note 6 to paragraph (d)(2),
respectively.
0
k. In paragraph (d)(3), remove the word ``shall'' wherever it appears
and add, in its place, the word ``must'';
0
l. In paragraphs (d)(4):
0
i. Remove the text ``Formulas (1) and (2) of this paragraph'' and add,
in its place, the text ``Formulas 1 and 2 to 56.50-50(d)''; and
0
ii. Remove the word ``shall'' and add, in its place, the word ``must'';
0
m. In paragraph (d)(5), remove the word ``shall'' wherever it appears
and add, in its place, the word ``must'';
0
n. In paragraph (e), remove the text ``Formula (2) in paragraph (d)''
and add, in its place, the text ``Formula 2 to 56.50-50(d)'';
0
o. Revise paragraphs (f)(1) and (2);
0
p. In paragraph (f)(4), remove the word ``shall'' and add, in its
place, the word ``must'';
0
q. Revise paragraph (g);
0
r. In paragraph (h), remove the text ``Except as allowed by paragraph
(c)(4)(vii) of this section, piping for draining a cargo hold or
machinery space must be separate from piping used for filling or
emptying any tank where water or oil is carried.'';
0
s. In paragraph (i), remove the word ``shall'' wherever it appears and
add, in its place, the word ``must'';
0
t. Revise paragraphs (j) and (k);
0
u. In paragraphs (l) and (m), remove the word ``shall'' wherever it
appears and add, in its place, the word ``must''; and
0
v. Designate the concluding Note as Note 7 to Sec.  56.50-50.
    The additions and revisions read as follows:

Sec.  56.50-50  Bilge and ballast piping.

    (a)(1) The requirements of SOLAS Chapter II-1 regulation 35-1
(incorporated by reference, see Sec.  56.01-2) for passenger and cargo
ships are considered equivalent to this section.
    (2) All vessels except unmanned barges must be provided with a
satisfactory bilge pumping plant capable of pumping from and draining
any watertight compartment except for ballast, oil and water tanks. The
bilge pumping system must be capable of operation under all practicable
conditions after a casualty whether the ship is upright or listed.
    (3) Arrangements must be made whereby water in the compartments
will drain to the suction pipes. Where piping is led through the
forepeak, see Sec.  56.50-1(b).
    (4) Where the vessel is to carry flammable liquids with a
flashpoint below 23 [deg]C (74 [deg]F) in enclosed cargo spaces, the
bilge-pumping system must be designed to ensure against inadvertent
pumping of such liquids through machinery spaces.
    (5) For vessels constructed on or after June 9, 1995, and on an
international voyage, arrangements must meet the requirements of SOLAS
Chapter II-1 regulation 35-1 to drain the enclosed cargo spaces on
either the bulkhead deck of a passenger vessel or the freeboard deck of
a cargo vessel.
    (b) Passenger vessels must have provision made to prevent the
compartment served by any bilge suction piping from being flooded in
the event the pipe is severed or otherwise damaged by collision or
grounding in any other compartment. Where the piping is located within
one-fifth of the beam of the side of the vessel or is in a duct keel, a
nonreturn valve must be fitted to the end of the pipe in the
compartment which it serves.
    (c)(1) Each bilge suction must lead from a manifold unless
otherwise approved by the Marine Safety Center.

As far as practicable, each manifold must be in, or capable of remote
operation from, the same space as the bilge pump. In either case, the
manifold must be capable of being locally controlled from the
floorplates. As far as practicable, each overboard-discharge valve for
a bilge system must comply with the requirements governing location and
accessibility for suction manifolds. Except as otherwise permitted by
paragraph (c)(4) of this section for a vessel employing a common-rail
bilge system, each bilge-manifold valve controlling a bilge suction
from any compartment must be of the stop-check type.
* * * * *
    (3) * * *
    (iii) The stop valve or the stop-check valve is power-driven, is
capable of remote operation from the space where the pump is, and is
capable of manual operation.
* * * * *
    (d) The internal diameter of bilge suction pipes including
strainers must be determined by Formulas 1 and 2 to 56.50-50(d), except