ML20126K632

Requests Peer Review Comments on Preliminary Case Study Rept Re Loss of Safety Sys Function Events.Comments Should Be Received within 30 Days of Receipt of Preliminary Rept

ML20126K632
Person / Time
Issue date:	07/15/1985
From:	Heltemes C NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD)
To:	Rossin D NUCLEAR SAFETY ANALYSIS CENTER
References
NUDOCS 8507300363
Download: ML20126K632 (2)

Text

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Distribution:

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AE0D SF NAS CF C. J. Heltemes T. I. Ippolito K. Black JUL15 Y G. Trager Dr. David Rossin, Director Nuclear Safety Analysis Center 3412 Hillview Avenue Palo Alto, California 94303

SUBJECT:

REQUEST FOR PEER REVIEW COMMENTS ON PRELIllINARY CASE STUDY REPORT - LOSS OF SAFETY SYSTEM FUNCTION EVENTS The Office for Analysis and Evaluation of Operational Data has completed a case study of events involving a total loss of safety system function (LSSF).

The study identified 133 LSSF events in the 1981 to June 1984 time period, 87 of which (65%) were the result of human factors considerations.

Although the study found no evidence of any previously unrecognized safety problens, it also found no clear evidence that a large improvement is being made, on an industry-wide basis, in preventing loss of safety system events.

Therefore, it is reconnended that the results of the study be fed back to industry and to the Regions for possible use in the SALP process.

In addition, it is recommended that training and qualifications development programs consider the types of personnel actually involved in LSSF events.

In accordance with AE00's " peer review" process, prior to the finalization dnd distribution of our Case study reports, we are providing HRR, IE, Regional Offices, RES, HSAC, and INPO with a copy of a preliminary report for review and comment, particularly regarding accuracy and completeness of the technical details. Changes to the findings, conclusions, and recommendations will be considered only if the underlying information concerning the details of plant design, systems operation or sequence of events is in error. Therefore, comments are being solicited on the technical accuracy of the report. The findings, conclusions and recommendations are provided for your information in order that you may understand the significance which AE00 places on this issue and, therefore, obtain a more conplete picture of the total report. We would welcome comments either g

informally by phone or fonaally by memorandum.

f Since we wish to finalize and issue the report shortly, we ask that any comments be received by us within 30 days from receipt of the preliminary g 70(y report. Should your office require some additional time beyond that point, please let us know, otherwise it will be assumed that there are no comments.4 f._ g I

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Dr. David Rossin As you may know, AE00 reports do not represent an official NRC position or the position of the responsible llRC program office. Our reports are one input to an ongoing review and evaluation process, and any recommendation contained in our final report will be considered and perhaps modified or eliminated by the responsible NRC office.

We are placing a copy of the preliminary report in the Public Document Room.

If you or your staff have any questions regarding this matter, please contact Gene Trager of my staff. ttr. Trager can be reached at (301) 492-4495.

sincerely, onginal Signed by

, C. J. He:ternes, Jr.

C. J. lleitemes, Jr., Director Office for Analysis and Evaluation of Operational Data

Enclosure:

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