ML20024A903

LER 83-030/03L-0:on 830519,during Normal Operations,Plant Computer Taken Out of Svc to Replace Defective Fan.Caused by Bearing Fan Failure.Fan Replaced & Computer Returned to svc.W/830616 Ltr

ML20024A903
Person / Time
Site:	Calvert Cliffs
Issue date:	06/16/1983
From:	Porter R, Raynor J, Russell L BALTIMORE GAS & ELECTRIC CO.
To:	Allan J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-83-030-03L-01, LER-83-30-3L-1, NUDOCS 8307010160
Download: ML20024A903 (2)

Text

NRC F0F'.M 366 U.S. NUCLEAR REGULATORY COMMISSION A

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• LICENSEE EVENT REPORT t

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7 8 9 CODE 14 15 LICENSE NUMBER 26 LICENSE TYPE 30 b7 CAT 68 CON'T l0l1I 7 8 5$RCE 60 l61 Ol 510l 0 l 0l 3l 117 68hl 069l 5 lEVENT DOCKET NUMBER 1 l 9I DATE 813 l@l 0 l 6 REPOR 74 lb l 116 I 8 I 380l@

T DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h IO l2l l At 1220 durine normal onerations the Plant Computer was taken out of l I O l31 I service to replace a fan that was found during a routine inspection to l l o 14 l l be defective. Securing the computer rendered Incore Monitoring inoper- 1 IO Isi 1 able (T.S. 3.3.3.2). The fan was replaced and the computer returned to l 1016 I l service at 1310. Excore Monitoring remained operable during this event. l 1017]1 Similar events: none. I 10181 l I DE CODE SU8C E COMPONENT CODE SU3C DE SU E O 9 II le l@ LsJ@ La_JO I x I x I x I x I x I x l@ LzJ@ Lz_] @

SEQUENTIAL , OCCURRENCE REPORT REVISION

,_ EVENT YEAR R EPORT NO. CODE TYPE N O.

@ =LER_ 21 18131 Ro l-l 1013l01 L(_I 1o 13 I LIJ I-I ls_]

22 23 24 26 27 28 29 30 31 32 Kr A ON PL NT ME HOURS S8 IT FOR B. SUPPLl MANUFACTURER I33 c l@l2_l@

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CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h lil0ll The cause for this event was a bearina failure of the fan (IMC Macnetic l l1 11 l l Corp., Mode 1#WS2107FL). This fan provides cooling to the lonic nower sun- 1 11 171 I olv. The fan was renlaced with n snnre. Sinco rho fnn in chocked mnneb1v l l iia ll under the preventive maintenance program, no further corrective or l 1 4 l preventive actions are deemed necessary. l 7 8 9 80 ST S  % POWE R OTHER STATUS IS O RY DISCOVERY DESCRIPTION ltl5j d @ l1lolol@l N/A I W @l Preventive Maintenance Inspection 1 ACTIVITY C TENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE l1l6l h dhl N/A I I 45 N/A I 7 8 9 10 11 44 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION

[,,1))_j lo lo 10 l@ b hl N/A I PERSONNE L INJU IES NUMBE R DESCRIPTION @ 8307010160 830616 li Ia 8l 9lo Io Io l@l N/A DR ADOCK 05000 l 7 11 12 80 LOSS OF OR DAMAGE TO FACILITY TYPE DESCRIPTION 7

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DESCRIPTION

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ISSUEf@l N/A l 68 69 lll!lllllllllf 7 8 9 10 80 %

NAME OF PREPARER R. J. Porter /J. W. Ravnor PHONE: 301-269-4747/4711 {

Yk B ALTIMORE G AS AND ELECTRIC COMPANY P.O. B O X 14 7 5 B A LTIM OR E. M A R Y L AN D 21203 NUCLE AR POWER DEPARTMENT CALVERT CLIFFS NUCLE AR POWER PL ANT LUSBY, M ARYL AND 20657 June 16, 1983 Mr. James M. Allan Docket No. 50-317 Acting Regional Administrator License No. DPR 53 U. S. Nuclear Regulatory Commission Region 1 631 Park Avenue King of Prussia, PA 19406

Dear Mr. Allan:

In accordance with Technical Specification 6.9 please find the attached thirty day report for LER 83-30/3L.

Should you have any questions regarding this report, we would be pleased to discuss them with you.

Very truly yours, O

L. B. Russell Plant Superintendent LBR:JWR:bsb cc: Director, Office of Management Information and. Program Control Messrs: A. E. Lundvall, Jr.

J. A. Tiernan

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