DocumentCode :
778511
Title :
A Comparison of Solid State and Relay Reactor Safety Systems
Author :
O´Sullivan, George A.
Author_Institution :
Nuclear Utility Services, Inc. Washington, D. C.
Volume :
13
Issue :
1
fYear :
1966
Firstpage :
420
Lastpage :
425
Abstract :
Solid state circuits demonstrating fast speed of response, miniaturization, and low power consumption have been replacing relay circuits in the logic portion of recent nuclear reactor safety systems. Some of the advantages of relay logic, such as circuit isolation, minimum number of parts, and low cost have been lost in the transition. A solid state and a relay safety system are described, and the application and merits of each are developed. Both system designs can meet the principal safety criterion of having the capability to take safety action when required under all operating conditions and with the presence of any one fault eitherwithin or outside the safety system. Secondary criteria used to compare the merits of each system are operability (freedom from false shutdowns), simplicity in testing, ease of maintenance, speed of response and cost. Reliability considerations include mode of component failure, frequency of testing, and the need for developmental testing.
Keywords :
Costs; Energy consumption; Fission reactors; Inductors; Logic circuits; Power system relaying; Relays; Safety; Solid state circuits; Testing;
fLanguage :
English
Journal_Title :
Nuclear Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9499
Type :
jour
DOI :
10.1109/TNS.1966.4323996
Filename :
4323996
Link To Document :
بازگشت