ML19338F772

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Submits Addl Info Re Design Details of Scram Discharge Header Monitoring Instrumentation in Response to IE Bulletin 80-17 Re Failure of Control Rods to Insert During Scram at BWR
ML19338F772
Person / Time
Site: Pilgrim
Issue date: 09/25/1980
From: Machon R
BOSTON EDISON CO.
To: Grier B
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
80-236, IEB-80-17, NUDOCS 8010270213
Download: ML19338F772 (1)


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PILGalM NUCLEAR PCWER STATION RFD #1 Roccv HtLL RcAo PLYM c W TH. MASSACHUSETTS O2360 September 25, 1980

.R. D. Machon Nuc1 car Operations Manager BEco Ltr. #80-236 Pilgrim Station Mr. Boyce H. Grier, Director Office of Inspection and Enforcement Region I U. S. Nuclear Regulatory Commission 631 Park f. venue King of Prussia, PA 19406 License No. DPR-35 Docket No. 50-293 Additional Information on the Scram Discharge Header Monitoring Instrumentation for PNPS Ref. a) BECo Letter (R. D. Machon) to NRC (B. H. Grier) titled "Suppleoent I to I&E Bulletin 80-17 Item-B.1", dated September 16, 1980

Dear Sir:

I This letter provides you with additional information relative to the design l

details of the Scr a Discharge Header Monitoring Instrumentation to be in-stalled at Pilgrim Station.

Specifically, in addition to the Control Room annunciation for high water level in the Scram Discharge Header as described in Reference a), we will install j

lights in the control room for all four detectors. Each detector will have two lights, one to signal Scram Discharge Header "high" level, the other to signal

" equipment power failure".

Should you have any further questions on this subject, please do not hesitate to contact us.

i Very truly yours, Y2 R. D. Machon

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