CPC Main Group G21D 1/00 Details of nuclear power plant (control G21D3/00) 4 direct subcodes Child Classifications Navigate with arrow keys, Enter to open G21D 1/003 G21D 1/006 G21D 1/02 Arrangements of auxiliary equipment G21D 1/04 Pumping arrangements (within the reactor pressure vessel G21C15/24; electrodynamic pumps H02K44/02)