Risk-based response to generic letter 89-10

Journal Article · Sat Dec 31 04:00:00 EST 1994 · Transactions of the American Nuclear Society

OSTI ID:76023

O`Regan, P J

Generic Letter 89-10 extended the scope of IE Bulletin 85-03 to encompass all motor-operated valves (MOVs) in safety-related piping systems. The generic letter addressed US Nuclear Regulatory Commission (NRC) concerns regarding whether MOVs would perform under actual demand conditions, based on several industry events. The generic letter requested a program of analysis, diagnostic testing, and, as practical, {Delta}P testing. The purpose of the work presented in this paper was threefold: (1) to review the Seabrook Station plant programs with regard to MOVs, particularly in light of Generic Letter 89-10 concerns; (2) to develop a risk-based ranking of MOVs independent of Generic Letter 89-10 issues; and (3) to develop a risk-based ranking specifically addressing generic issues (i.e., Generic Letter 89-10) and accounting for plant-specific attributes that address MOV reliability such as in-service inspection and testing, technical specification, and Generic Letter 89-10.

• OSTI ID: 76023
• Report Number(s): CONF-940602--
• Journal Information: Transactions of the American Nuclear Society, Journal Name: Transactions of the American Nuclear Society Vol. 70; ISSN 0003-018X; ISSN TANSAO
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
22 GENERAL STUDIES OF NUCLEAR REACTORS
REACTOR COMPONENTS
REACTOR SAFETY
RISK ASSESSMENT
SAFETY
SEABROOK-1 REACTOR
SEABROOK-2 REACTOR
VALVES