ML20198B302
| ML20198B302 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 12/19/1997 |
| From: | Rossi C NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD) |
| To: | Gillespie F, Holahan G, Lainas G NRC (Affiliation Not Assigned) |
| Shared Package | |
| ML20198B306 | List: |
| References | |
| AEOD-E97-03, AEOD-E97-3, NUDOCS 9801060262 | |
| Download: ML20198B302 (2) | |
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December 19, 1997 MEMORANDUM TO:
Frank P. Gillespie, Director, DISP:NRR Gary M. Holahan, Director, DSSA NRR Gus C. Laines, Ading Director, DE:NRR Jack W. Roe, Acting Director, DRPM:NRR R. Lee Spessard, Director DRCH:NRR Lawrence C. Shao, Director, DET:RES M. Wayne Hodges, Director, DST:RES Joseph A. Murphy, Acting Director, DRA:RES James T. Wiggins, Director, DRS:RGN l Johns P. Jaudon, Director, DRS:RGN-Il John A. Grobe, Director, DRS:RGN-Ill Arthur T. Howell, Director, DRS:RGN-IV FROM:
Charles E. Rossi, Dir
- d,[ [*e Safety Programa Division Offlos for Analysis and Evaluation of Operational Data
SUBJECT:
ENGINEERING EVALUATION, "NUCLENAWER PLANT COLD WEATHER PROBLEMS AND PROTECTIVE MEASURES" Attached is an AEOD engineering evaluation, " Nuclear Power Plant Cold Weather Problems and Protodivo Measures." AEOD initiated this evaluation as a result of a January 30, igg 6, event at the Wolf Creek Generating Station. The event invoked icing of cooling water intake trash rocks and traveling screens, subsequent loss of an essential service water system train, and other plant complications.
Recmt operating experience suggests that despite NRC and industry communications on this subject, some licensees have not effectively protected compoaonts whose failure could degrade safety systems. Extremely cold weather conditiom continued to affect intake structures, process lines, instrument lines, emergency diesel generator oil and grense viscosities, essential deers, electrical systwns, heating, ventilation and air conditioning systems. Ladt of design oversight, incomplete review of operating experlanos, and nnsufficient attention to cold weather properations resulted in most of the events. Important approaches and measures licensees have used to protect against cold weather operational events appear in the Lessons Leamed Sections of this report.
U e v O'E 2 CONTACT: Ronald L. Lloyd, AEOD/SPD Q [{ %[] @Y (301) 415-747g E-mail: RLL1@nrc. gov
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9 F. Gillespie, et al. 1 The report has been revised to incorporate comments received from the Plant Systems Branch, Events Assessment and Generic Communications Branch, and Inspection Program Branch of NRR. Fo'W'Np discussloris with the Chief, Events Assessment and Generic Communications Branch, lume, 1 that the NRR AEOD events assessment panel will determine if additional generic communications should be developed. An Information Notice would provide an effective means of alerting licensees to the availability of the report which contains a useful compendium of cold weather related events and corrective actions. In addition, discussions with the Chief, inspection Program Branch, indicate that actions will be taken to revise Inspection Procedure 71714. " Cold Weather Preparations' using information contained in the report to make the inspection procedure more explicit and operating experience focused.
Attachment:
As stated cc w/att.:
V. K. Chexal. EPRI Pat Lewis, INPO Debbie W. Queener, NOAC Djairibution w/ tt.:
A Public DHickman BSheron, ADT tPts Center PBaranowsky RZimmerman, ADPR RAB R/F SRichards, NRR AThadani, DEDE SPD R/F RWessman, NRR JMitchell, OEDE TTMartin REmrit, RES TOMartin, OEDO FCongel MMayfield, RES KRaglin RSavio, ACRS H:\\RAB\\LLOYD\\ COLD 1218 WPD
'See previous concurrence:
gw.. e.n.e we uaec.o m. 6a: c. cm.ean n.on-4 g.c m e en=#cww=* w.
OFFICE RAB lE RAB lE C:RAlf M 'A D:SPD 6
NAME RLloyd:rnmk JRos'enthat CRossW A DATE 12/18/97*
12/ f/97 12//997
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OFFICIAL RECORD COPY
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