ML20248D204

Lists Search Commands Used to Satisfy Request for LERs Re Relays or Diesel Generator Control Circuitry Problems Affecting Multiple Diesel Generators Similar to Recent Event at Facility & Calibr Problems W/Relays

ML20248D204
Person / Time
Site:	Perry
Issue date:	07/28/1989
From:	Mays G OAK RIDGE NATIONAL LABORATORY
To:	Mazumdar S NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD)
Shared Package
ML20248D144	List: ML20248D139 ML20248D194 ML20248D204
References
NUDOCS 8910040154
Download: ML20248D204 (2)

Text

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rMY j[  ; OAK RIDGE NATIONAL LABORATORY Post orries sox 2cos OAK RIDGE. TENNESSEE 37831 ^

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p Bldg. 9201-3, MS-8065

. July 28, 2989..

4 Mr. Subincy Mazumdar Office _ for Analysis and Evaluation of Operational Data -

MS 9705.MNBB.

U. S. Nuclear Regulatory Comission Washington, DC 20555.

Dear.Mr. Mazumdar:

.LERs on Relay Problems In response to your, July 25 requet*,, we searched the SCSS database for LERs related to (1) relays or diesel generator control circuitry problems affecting multiple diesel generators, similar to a recent event at the Perry plant (LER 89-017) and (2) calibration problems with relays affecting multiple trains of a system similar to a 1988 event occurring at .the Palisades plant (LER 88-021).

.The SCSS database presently contains-LERs with event dates from 1980 approximately through mid-May~1989. The search comands used to satisfy -

.your' request are as follows:

'Comand Comant, Search 1 FIND- .

Find all LERs, similar to the

.ICOMP.217.<PSYS> EH- 1989 Perry event, describing PSYS IH EH- ' problems with relays located END' in the Emergency Power Generation System (PSYS EH) or all LERs- found in the Emergency Generator I & C System and the Emergency Power RESULT: 652 LERS (Group A) System (Group A).

ST: From Group A, determine which PSYS EH < COMP > XXX events involved multiple

.PSYS EH ..NE. I trains (Group B). END RESULT: 192 LERS (Group B) -XF List all events from Group B 'PSYS PD which also involved design END problems. RESULT: 2894 LERS (Group C) '3910040154 890925 PDR ADOCK 05000440 p PDC __2_ _ _-- . _ - - - _ __ - _ -_ - - _ - _ __ ___ _ . _ - _ _ _ - _ - __- _-__ e - - - - ~ ~ - - - - - - - -

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sg v , _ h-gf,,q n ,Mr.LSubinoy'Mazumdar-9, 2.. ' July 28,:1989- >a

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U LCommand (Cont!'d)* Comment' (Cont'd) , -NATCM C B-

• : RESULT: L44' LERs '(Group D) Enclosure 1-3:-

N0 MATCH D B- List: all- the Other. relay; problems, other than design-L< related.s RES!!LT: ' 148 LERs' Enclosure 2 ,e ~ Search 2' ' FIND Find all LERs, similar to the o ICOMP 217:<EFF):LB 1988 Palisades event, END describing calibration-

ST. .

' problems with relays which TR .NE. 1 <PSYS> .NE.'XX .NE. involved multiple trains YY..NBEG. P. (Group E). From Group E', END determine which of the events also involved design problems ' . RESULT:: '187 LERS .(Group;E) (Group G). XF PSYS PD END. . RESULT: LERS (Group F)' MATCH F E: RESULT: 23 LERS (Group G) Enclosure 3

NOMATCH G E List all other out-of-calibration problems, other than ' desi gn-rel ated.

. RESULT: 164 LERs Enclosure 4 The' abstracts' for the 379 LERs are enclosed. Please contact either Mike Poore (FTS 62,4-0325) or myself (FTS 624-0394) if we can be of further assistance. Sincerely yours, ,h [Niay/ ' G. T. Mays Nuclear Operations Analysis Center GTM:DSQ:gts Enclosures

1. ~

.cc: J. R. Buchanan W. P..Poore D. S. Queener ' File - GTM j - - _ - - - - - - - _ _ - - - - - - _ _- _ _ _ _ -