| 976 / | HD | NUCLEAR TECHNOLOGY |
| DIG 187 | DD | COOLING ARRANGEMENTS WITHIN THE PRESSURE VESSEL CONTAINING THE CORE; SELECTION OF SPECIFIC COOLANTS [G21C-15/00] {7} |
| DIG 188 | DD | .~ Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices [G21C-15/02] *** (DIG. 246 takes precedence); (coolant flow control through fuel assemblies (e.g., flow restrictors) DIG. 60) {5} |
| DIG 189 | DD | .~.~ From fissile or breeder material [G21C-15/04] *** (DIG. 59 takes precedence) {1} |
| DIG 190 | | .~.~.~ In fuel elements [G21C-15/06] |