ML20067A441
| ML20067A441 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 02/09/1994 |
| From: | Sieber J DUQUESNE LIGHT CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| ND3MOA:0215, ND3MOA:215, NUDOCS 9402180001 | |
| Download: ML20067A441 (3) | |
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Beaver Valey Power Stahon Shippingport, PA 15077-0004 JOHN D SIEGEn February 9, 1994 (4123 393-s25s Senior Vice President and f ax (412) 643-8069 Chief No:Jear Officer Nuclear Power Dmsson U.
S.
Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555
Subject:
Beaver Valley Power Station, Unit No. 1 and No. 2 BV-1 Docket No. 50-334, License No. DPR-66 BV-2 Docket No. 50-412, License No. NPF-73 Annual Report of All Challenges to the Pressurizer Power Operated Relief Valves or Safety Valves This report is submitted in accordance with the Beaver Valley Power Station Unit Nos. 1 and 2 Technical Specification 6.9.1.5.b.
Unit 1:
There was one challenge to the pressurizer power operated relief valves (PORVs) at Unit 1
during the period of January 1, 1993, to December 31, 1993.
Date:
November 7, 1993 Plant Conditions:
Mode 4,
Reactor Coolant System (RCS) pressure was 385
- psig, Overpressure Protection System (OPPS) was not in service.
A cooldown to Mode 5 was in progress.
Summary:
Pressurizer Power Operated Relief
- Valve, PCV-RC-455C, momentarily opened as OPPS was placed into
- service, reducing RCS pressure by 6 psig.
OPPS was placed into service while RCS pressure was in the
" trip-reset" region for comparator i
operations for the PORV.
There were no challenges to the pressurizer safety valves during the period.
Unit 2:
There were no challenges to the pressurizer safety or power operated relief valves at Unit 2
during the period of January 1, 1993, to December 31, 1993.
Sincerely, Pg re
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PDR ADOCK 05000334 !
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D.
Sieber R
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Mr.
L.
W.
Rossbach, Sr. Resident Inspector Mr.
T.
T.
Martin, NRC Region I Administrator Mr.
G.
E.
Edison, Project Manager
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s' f5 tgD-DUQUESNE LIGIIT COMPANY Nuclear Power Division Nuclear Operations Unit January 28,1994 ND3MOA:0215 Challences to Safety and Power Operated Relief Valves G. S. Sovick:
In accordance with Technical Specification 6.9.1.5.b, Duquesne Light is required to report all challenges to the Pressurizer Safety and Power Operated Relief valves (PORV) for Units 1 and 2. The attached is a summary of all challenges from January 1, 1993 to December 31,1993, G.F.Z c
Supervisor Reactor Engineering JGT/ke Attachment cc:
N. R. Tonet J. G. Treese F;l Lipchick Central File I
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Attachment January 28,1994 ND3MOA:0215 Challenees to Safety and Power Operated Relief Valves Unit 1:
There was one challenge to the Pressurizer Safety and Power Operated Relief Valves (PORV) at Unit I during the period of January 1,1993 to December 31,1993.
1.
Date November.7,1993 Plant Conditions:
Mode 4, RCS pressure was 385 psig, Overpressure Protection System (OPPS) was not in service. A cooldown to Mode 5 was in progress.
Summary Pressurizer Power Operated Relief Valve, PCV-RC-455C, momentarily opened while placing OPPS in service, reducing RCS pressure by 6 psig. OPPS was placed in service while RCS pressure was in the " trip-reset" region for comparator operations for the PORV.
Unit 2:
There were no challenges to the Pressurizer Safety and Power Operated Relief Valves (PORV) at Unit 2 during the period ofJanuary 1,1993 to December 31,1993.
Prepared by
[J b'
'K J. G. Treese Reviewed by G. F. Zupsic V'
Approved by
_ _ El L. R. Freeland
-