US PATENT SUBCLASS 376 / 287
.~ Shield or barrier between radiation or heat source and object to be protected (e.g., insulation, thermal shield)

Current as of: June, 1999
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376 /   HD   INDUCED NUCLEAR REACTIONS: PROCESSES, SYSTEMS, AND ELEMENTS

277  DF  REACTOR PROTECTION OR DAMAGE PREVENTION {14}
287.~ Shield or barrier between radiation or heat source and object to be protected (e.g., insulation, thermal shield) {4}
288  DF  .~.~> Particular materials
289  DF  .~.~> Thermal insulation {2}
292  DF  .~.~> Concentric tubes or conduits
293  DF  .~.~> Containment structures {1}

DEFINITION

Classification: 376/287

Shield or barrier between radiation or heat source and object to be protected (e.g., insulation, thermal shield):

(under subclass 277) Subject matter wherein the undesired effect (a) is the presence of radiation in a given area which undesired effect is minimized by providing means to attenuate the radiation prior to its entry into said area, or (b) to attenuate the egress of material into the area to be protected.

(1) Note. Means to attenuate includes means to prevent or retard the egress of steam or effluent from a malfunctioning reactor component. Said steam or effluent will contain at least nominal radioactivity.