05000416/LER-1984-005, Updated LER 84-005-01:on 840119,drywell Purge Compressor Logic a Relay Compressor Inadvertently Started.Caused by Defective Procedure.Memo Written to All Technical Section Engineers Re Adequate Engineering Review

Updated LER 84-005-01:on 840119,drywell Purge Compressor Logic a Relay Compressor Inadvertently Started.Caused by Defective Procedure.Memo Written to All Technical Section Engineers Re Adequate Engineering Review

ML20088A559
Person / Time
Site:	Grand Gulf
Issue date:	03/30/1984
From:	Dale L, Parker J MISSISSIPPI POWER & LIGHT CO.
To:	NRC OFFICE OF ADMINISTRATION (ADM)
References
AECM-84-0198, AECM-84-198, LER-84-005, LER-84-5, NUDOCS 8404120211
Download: ML20088A559 (3)

LER-2084-005, Updated LER 84-005-01:on 840119,drywell Purge Compressor Logic a Relay Compressor Inadvertently Started.Caused by Defective Procedure.Memo Written to All Technical Section Engineers Re Adequate Engineering Review

Event date:
Report date:
4162084005R00 - NRC Website

text

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s Attachment to AECM-84/0198 NAC Form 388 U.S. NUCLEAR F.EGULATOAY COMMLSSION

• ~ APrftOVED oms NO 3150-4104 E m REs er31 s LICENSEE EVENT REPORT (LER)

FACILITV NAME tu DOCILET NUMSLR (2) PAGE G Grand Gulf Nuclear Station - Unit 1 TITLE (48 oistololol4[1 16 1 lOFl 012 Drywell Purge Compressor Start EVENT DATE (S) LER NUMBER (S) REPORT DATE 17) OTHER F ACILITIES INVOLVED 181 MONTH DAY YEAR YEAR II[

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0l1 1l9 8 4 8l 4 0 l0!5 0l1 0l3 1 l0 Rl A 0 1 5I O 1 0 1 0l I I THl3 REPORT IS SUBMITTED PURSUANT TO THE REOUIREMENTS OF 10 CFR {: (Check eee or more of the foIIoevng/ (11)

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30.4084eH1Hivl 50.73(aH2Het 50 73(eH21tvehHS) 20.405tell1Hvl 90.734112Hau) 50.73feH2Hal LICENSEE CONTACT FOR THIS LER (121 NAME TELEPHONE NUM8ER ARE A CODE Jerry L. Parker 6 in 11 41317 l 12 11 14 19 COMPLETE ONE LINE FOR EACH COMPONENT FAILURE DESCR10ED IN THIS REPORT (13)

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REPORTA LE yo ug CAUSE SYSTE M COMPOR ENT M

f R RTA LE pq I I I I I I I I I I I I I I i  ! I i I I I I I I I I I i 1 SUPPLEMENTAL REPORT EXPECTED (148 UONTH DAY YEAR 9USMissiON Y ES (19 yee, congvere EXPECTED SUOMISSION DATE] NO l l l 1.9ETR ACT IUmit to 1000 aceces I e , acoronomewy h!\oen sengte spece typewertten tonee) (19l Durir.g performance of a Special Test of the Drywell Purge Compressor "A" logic relays the compressor was inadvertently started. The inndvertent start was caused by use of a defective procedure. A relay power supply lead which was lifted, as instrr cd by the procedure, caused another relay to deenergize due to their cocunon power supply leads being connected in series.

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, Attachment to AECM-84/0198 NAC Form 3esA U S. NUCLEASI KEGULATORY COMMISSION LICENSEE EVENT REPORT (LER) TEXT CONTINUATION maovEo ous no siso-cio.

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0l1 0l2 OF 0 12 TEXT tXsure spece e regewest was oessneertW NAC Fone 3AM'sJ 1175 At 1430 hours0.0166 days <br />0.397 hours <br />0.00236 weeks <br />5.44115e-4 months <br /> on January 19, 1984, while the plant was in Cold Shutdown, Instrument Technicians were performing a Special Test as a retest for replacement of several Agastat relays. During performance of the portion of the test which involved the Drywell Purge Compressor "A" initiation logic, the compressor inadvertently started. This start was due to a procedure error.

The power stpply to most of the relay logic is connected in series. When a technician lifted the power supply lead to one relay to test it, as instructed by the procedure, it also deenergized another relay which caused the I compressor to start.

This event has no safety consequences or implications. The procedure being followed was a one-time Special Test. The person who wrote the procedure has been made aware of the problem. A memo was written to all technical section engineers stressing the importance of adequate engineering review. This is a final report.

t Somu assa

.. 1 P MISSISSIPPI POWER & LIGHT COMPANY  :

Helping Build Mississippi P. O. B O X 16 4 0. J A C K S O N. MI S SIS SI P PI 3 9 2 0 5 March 30, 1984 NUCLE AR PRODUCTION DEPARTMENT Document Control Desk U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Gentlemen:

SUBJECT:

Grand Gulf Nuclear Station Unit 1 Docket No. 50-416 License No. NPF-13 File: 0260/L-835.0 Update Report - Drvwell Purge Compressor Start LER 84-005-1 AECM-84/0198 Attached is Licensee Event Report (LER) 84-005-1 which is a final report.

Yours truly,

.L. F. Dale Manager of Nuclear Services EBS/S11H:rg Attachment cc: Mr. J. B. Richard (w/a)

Mr. R. B. McGehee (w/o)

Mr. T. B. Conner (w/o)

Mr. G. B. Taylor (w/o)

Mr. Richard C. DeYoung, Director (w/a)

Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Mr. J. P. O'Reilly, Regional Administrator (w/a)

U. S. Nuclear Regulatory Commission Region II 101 Marietta St., N.W., Suite 2900 Atlanta, Georgia 30303 l i Member Middle South Utilities System