US PATENT SUBCLASS 376 / 277
REACTOR PROTECTION OR DAMAGE PREVENTION

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

277REACTOR PROTECTION OR DAMAGE PREVENTION {14}
278  DF  .~> By minimizing positive coolant void coefficient
279  DF  .~> Fire extinguishing or prevention
280  DF  .~> Core catchers
281  DF  .~> Fluid flow reversal protection
282  DF  .~> Emergency core coolant systems (e.g., injecting coolant into reactor or pipe systems)
283  DF  .~> Pressure suppression and relief {1}
285  DF  .~> Expansion means (e.g., shock absorbers, roller bearings) {1}
287  DF  .~> Shield or barrier between radiation or heat source and object to be protected (e.g., insulation, thermal shield) {4}
297  DF  .~> With turbine protection means (e.g., turbine trip or overspeed protection means)
298  DF  .~> Auxiliary heat removal structure {1}
300  DF  .~> Recombiners {1}
302  DF  .~> Core restraint means {2}
305  DF  .~> Corrosion or damage prevention {1}
307  DF  .~> With pressurizer means

DEFINITION

Classification: 376/277

REACTOR PROTECTION OR DAMAGE PREVENTION:

(under the class definition) Subject matter for reducing undesired effects resulting from the operation, malfunction, or failure of a nuclear fission reactor component.

1) Note. The utilization of shielding or insulation to reduce or prevent irradiation damage is proper subject matter for this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

274, for means or steps for minimizing radioactive contamination within an underground chamber or of the material removed therefrom.