01198nam 2200349 450 991071512310332120201229112749.0(CKB)5470000002508786(OCoLC)1228170831(EXLCZ)99547000000250878620201229d1987 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierBackseating valves routinely to prevent packing leakageWashington, D.C. :United States Nuclear Regulatory Commission, Office of Nuclear Regulation,1987.1 online resourceInformation notice ;no. 87-40"August 31, 1987."Nuclear power plantsPipingValvesMaintenance and repairGas leakageNuclear power plantsPipingValvesMaintenance and repair.Gas leakage.U.S. Nuclear Regulatory Commission.Office of Nuclear Reactor Regulation,GPOGPOBOOK9910715123103321Backseating valves routinely to prevent packing leakage3350908UNINA