Induced nuclear reactions: processes – systems – and elements – With control of reactor – By electronic signal processing circuitry
Patent
1986-09-29
1988-04-26
Walsh, Donald P.
Induced nuclear reactions: processes, systems, and elements
With control of reactor
By electronic signal processing circuitry
376259, 364140, G21C 736
Patent
active
047403497
ABSTRACT:
Components and systems which impact technical specifications (tech specs) in a nuclear power plant are modeled in a set of cascading operability trees which represent the various combinations of component, system and parameter statuses which can result in non-compliance with the tech specs. Cutsets for the operability trees are entered into a cutset table in the data base of a digital computer which tracks the effect of a selected event up through the trees by repetitively searching the cutset table using the top event activated by the selected event as the selected event for the next search, until an activated top event is reached which is not entered in the cutset table as an event. A separate cutset evaluation table is used to assure that all the members of a multiple event cutset have been activated before the associated top event is activated. The base events which resulted in activation of a top event, such as non-compliance with a tech spec, can be identified by reversing the search process down through the cutsets in the cutset table.
REFERENCES:
patent: 4552718 (1985-11-01), Impink et al.
patent: 4632802 (1986-12-01), Herbst
Computerized Technical Specification Compliance Specappraisal, M. J. Loftus and N. J. Liparulo, Jan. 1985, ANS Conference--Boston.
Nucleonics Week--Sep. 6, 1984--Orders Seen Soon for LCO Tracking Systems in Desktop Computers.
User Confidence in Computer-Aided Technical Specification Management, R. G. Sider, P. W. Rzasa, S. A. Serafin, Combustion Engineering, Inc., Windsor Connection.
Quantus--Quadrex Nuclear Technical Specification User System.
Nuclear News--Sep. 1984--The Onset of Computer-Based Systems--Technical Specifications.
Computerizing the Plant Specifications--Robert F. Renuart.
Liparulo Nicholas J.
Loftus Michael J.
Remlinger, Jr. Donald P.
Abeles D. C.
Walsh Donald P.
Westinghouse Electric Corp.
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