ML19262B569

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RO-79-048 on 791224:backup Battery Charger,In Use Due to Main Battery Charger 791223 Failure,Tripped & Could Not Be Reset.Cause Under Investigation.Spare Battery Charger Will Be in Svc by 791224
ML19262B569
Person / Time
Site: Pilgrim
Issue date: 12/24/1979
From: Graham E
BOSTON EDISON CO.
To:
References
NUDOCS 7912280475
Download: ML19262B569 (1)


Text

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BOSTON EDISON COMPANY TELECbPY MESSAGE To:

'215-337-5324 Date/ Time: 12/24/79

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Telephone Number T

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To: Director, Region I From:

Office of Inspection and Enforcement Pilgrim Nuclear Power Station U. S. Nuclear Regulatory Commission

.RFD #1 Rocky 11111 Road 631 Park Avenue Plymouth, MA 02360 King of Prussia, PA 19406 Subj ect: PROMPT REPORTABLE OCCURRENCE Docket Number 50-293; License DPR-35

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Assigned LER Number 79-048/01X-0 chyard 12$olt M,_bacbp bag day w S Mu e su Event

Description:

because of a failure of the main battery charger en Dec. 23, 1979. At 08 0 Dec. 24, 1979, the backup battery charger tripped and could not be z' set. This is a limiting e

condition for operation as addressed in Section 3.9.3.5 of Tech. Specs.

Cause and Corrective Actionj The cause of the Battery Charger Failures is under in-vestigation. A spare battery charger is being brought on site and is expected to be

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in service by 1300 Dec. 24,1979.

Facility Status:

1904 % Thermal MW c) Routine Startup d) Routine Shutdown g) Shutdown h) Refueling e) Steady State X

1) Other f) Load Changing j) Not Applicaple A written follow-up report will be sent within two weeks.

HRC person notified Mr. R. McClintock Prepared by Mr. E. T. Graham

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Mail (2) copies to:

Office of Management Information and Program Control 4

U. S. Nuclear Regulatory Commission Washington, D.C.

20555 7912280

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