US PATENT SUBCLASS 376 / 245
TESTING, SENSING, MEASURING, OR DETECTING A FISSION REACTOR CONDITION

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

245TESTING, SENSING, MEASURING, OR DETECTING A FISSION REACTOR CONDITION {10}
246  DF  .~> Flowmeters
247  DF  .~> Temperature or pressure measurement
248  DF  .~> Optics
249  DF  .~> Vessel monitoring or inspection
250  DF  .~> Leak detection {1}
254  DF  .~> Flux monitoring {1}
256  DF  .~> Gas sensors (e.g., hydrogen detectors)
257  DF  .~> Fuel assay (e.g., burnup)
258  DF  .~> Position detection
259  DF  .~> By particular instrumentation circuitry

DEFINITION

Classification: 376/245

TESTING, SENSING, MEASURING, OR DETECTING A FISSION REACTOR CONDITION:

(under the class definition) Subject matter for determining the state of the reactor system or a component thereof.

(1) Note. When the determination involves a nuclear reaction as a portion of the detection chain, see this class (376), subclass 153.

(2) Note. Merely providing a window or a trap for visually detecting or sampling or inspecting or mentally judging is not considered as proper subject matter for this and indented subclasses.

(3) Note. "Operation" or "reaction" is inclusive of the period from startup through shutdown.

(4) Note. The "conditions" generally "measured" or "detected", etc., included such as for example, reactor power level, or reactor period, neutron density, neutron flux, neutron flux distribution, radioactivity or other radiations, temperature, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

409, for fuel element having enclosed within it, or integrally associated with it, some means, device, or material which may be used to warn of a condition or in measuring, sensing, monitoring, etc., of a condition during normal use of the fuel.

450, for fuel element and its closure structure which includes a feature, means, or material useful or assisting in detecting or warning in regard to leaks or of an otherwise improperly constructed or functioning fuel element. SEE OR SEARCH CLASS

73, Measuring and Testing, appropriate subclasses for testing or measuring of physical properties.

250, Radiant Energy, appropriate subclasses for miscellaneous measuring or detecting, etc., devices for use in conjunction with neutrons or other invisible radiations.

324, Electricity: Measuring and Testing, appropriate subclasses for testing or measuring of electrical properties.

340, Communications: Electrical,

500+, for condition responsive signalling.

374, Thermal Measuring and Testing, appropriate subclasses for measuring or testing of thermal properties.