ML20024C403

LER 83-071/03L-0:on 830607,RHR Shutdown Cooling Mode Isolated When Valve E12-F009 Closed.Caused by Blown Fuse. Fuse replaced.W/830627 Ltr

ML20024C403
Person / Time
Site:	Grand Gulf
Issue date:	06/27/1983
From:	Black D, Mcgaughy J MISSISSIPPI POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
AECM-8310366, LER-83-071-03L, LER-83-71-3L, NUDOCS 8307120592
Download: ML20024C403 (2)

Text

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EveseT seSCRlPTION A DPRO8A C S teCES o' Inn June 7. 1993. the shutdown coolino made of RHR isolated when l o 3 lisolation valve E12-FOO9 closed due to a blown fuse (1C71-F36 in panel l 0 a 11H13-P693). This event resulted in entering the action statement of l 0 5 IT.S.3.4.9.2 and is beina reported pursuant to T.S.6.9.1.13.b. The event l 0 :5 lhad no affect on the health and safety of the oublic and did not J o 7 leonstitute a threat to clant safety. 1 o e I

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12 lio l lTt1Ls_ my_ent was caused by a blown fuse. The fuse was replaced in 53 l lTTIl iminutes and the shutdown coolino mode of RHR was placed in operable i i 2 1 status per T.S.3.4.9.2. This event' occurred curing normal operation of f i 3 lthe system and no further corrective action is considered necessary.

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o MISSISSIPPI POWER & LIGHT COMPANY E Helping Build Mississippi P. O. B OX 1640, J AC K S O N, MIS SIS SIP PI 3 9 2 0 5 June 27, 1983

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Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission 8 >

Region II -

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, z 101 Marietta St., N.W., Suite 2900

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n s Attention: Mr. J. P. O'Reilly, Regional Administrator e h3 Ca

Dear Mr. O'Reilly:

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SUBJECT:

Grand Gulf Nuclear Station C ht:

Unit 1 Docket No. 50-416 License No. NPF-13 '

File 0260/L-835.0 Shutdown Cooling Mode of RHR I Isolated LER 83-071/03 L-0 AECM-83/0366 On June 7, 1983, the shutdown cooling mode of RHR isolated when isolation  !

valve E12-F009 closed due to a blown fuse (1C71-F36 in panel 1H13-P693). This event resulted in entering the action statement of Technical Specification {

3.4.9.2 and is being reported pursuant to Technical Specification 6.9.1.13.b.

( Attached is LER 63-071/03 L-0.

> 1 Yours truly, At c ent h [- Oh/

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 Document Control Desk (w/a)

U. S. Nuclear Regulatory Commission Washington, D. C. 20555 ga . rcoPY

Member Middle South Utilities System gg-a_ lI