US PATENT SUBCLASS 976 / DIG 188
.~ 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)


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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.~ 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 191  DD  .~.~> From moderating material [G21C-15/08]
DIG 192  DD  .~.~> From reflector or thermal shield [G21C-15/10]
DIG 193  DD  .~.~> From pressure vessel; from containment vessel [G21C-15/12]
DIG 194  DD  .~.~> From headers; from joints in ducts [G21C-15/14]