Valve system incorporating single failure protection logic

Patent · Tue Jan 22 00:00:00 EST 1980

OSTI ID:6724114

Ryan, R; Timmerman, W J.H.

A valve system incorporating single failure protective logic consists of a valve combination or composite valve which allows actuation or de-actuation of a device such as a hydraulic cylinder or other mechanism, integral with or separate from the valve assembly, by means of three independent input signals combined in a function commonly known as two-out-of-three logic. Using the input signals as independent and redundant actuation/de-actuation signals, a single signal failure, or failure of the corresponding valve or valve set, will neither prevent the desired action, nor cause the undesired action of the mechanism.

• Assignee: Dept. of Energy
• Patent Number(s): US 4184514
• Application Number: TRN: 81-001824
• OSTI ID: 6724114
• Resource Relation: Patent File Date: Filed date 11 Jan 1978; Other Information: PAT-APPL-868,634
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
REACTOR CONTROL SYSTEMS
DESIGN
LOGIC CIRCUITS
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ELECTRONIC CIRCUITS
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FLOW REGULATORS
220400* - Nuclear Reactor Technology- Control Systems