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)


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BOSTON EDISON COMPANY

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TELECbPY MESSAGE ' '

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'215-337-5324

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To:

Telephone Number T Date/ Time: 12/24/79 /

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E To: Director, Region I From: Pilgrim Nuclear Power Station M

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Office of Inspection and Enforcement .RFD #1 Rocky 11111 Road U. S. Nuclear Regulatory Commission Plymouth, MA 631 Park Avenue 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 -

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Event

Description:

e su chyard 12$olt M,_bacbp bag day w S Mu

  • 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 e z' set. This is a limiting 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.

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Facility Status:

c) Routine Startup 1904 % Thermal MW g) Shutdown d) Routine Shutdown e) Steady State X h) Refueling f) Load Changing 1) Other j) Not Applicaple A written follow-up report will be sent within two weeks. .

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

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Mail (2) copies to: -

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Office of Management Information and Program Control 4 U. S. Nuclear Regulatory Commission *

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Washington, D.C. 20555

  • 7912280

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