 In 2008, 14 shutdown commercial power reactors were planned for or had completed DECON, 11 were in SAFSTOR, 3 were in ENTOMB and Three Mile Island unit 2 was defuelled and will be decontaminated when Unit 1 ceases operation.Different sub-levels of SAFSTOR are recognized, which vary in the type of activity and monitoring required.In "hot/cold standby" the plant is kept in operating condition but not actively delivering power; monitoring and maintenance is similar to that during a long outage.