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U.S. Department of Energy
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Evaluation of boiling water reactor water-level sensing line break and single failure: Generic Issue 101 boiling water reactor level redundancy - technical findings

Technical Report ·
OSTI ID:6418868
This report presents an evaluation of the potential safety concerns identified in Generic Issue 101, related to Boiling Water Reactor (BWR) level sensing line breaks. For this review, failure combinations and transients were evaluated to assure that existing BWR plants could be safely shut down under postulated conditions of a break or leak in the instrument line of the reactor vessel level instrumentation plus an independent single failure in any protection system. The review evaluated all the designs currently employed in boiling water reactor plants. Part I of this report describes the methodology used to evaluate the various designs and provides technical findings. Part II presents the value/impact analysis performed to evaluate the various alternatives that were considered to improve plant response to a postulated water-level sensing line break and single failure.
Research Organization:
Nuclear Regulatory Commission, Washington, DC (USA). Div. of Safety Issue Resolution; EG and G Idaho, Inc., Idaho Falls (USA)
DOE Contract Number:
AC07-76ID01570
OSTI ID:
6418868
Report Number(s):
NUREG/CR-5112; EGG-2536; ON: TI89008677
Country of Publication:
United States
Language:
English