ML20080K811
| ML20080K811 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 02/17/1995 |
| From: | George Thomas DUQUESNE LIGHT CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9503010320 | |
| Download: ML20080K811 (2) | |
Text
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.._f Beaver Valley Power Station Shippingport. PA 15077-0004 i
(412) 393-5206 (412) 643-8069 FAX GEORGE S. THOMAS Division Vice President nuctear services February 17, 1995 Nuclear Power Divisnan U.
S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001
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 or Safety Valves This report is submitted in accordance with the Beaver Valley Power Station Unit Nos. 1 and 2 Technical Specifications 6.9.1.4 and 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, 1994, to December 31, 1994.
Date:
July 28, 1994 Plant Conditions:
Mode 4,
Reactor Coolant System (RCS) pressure was indicating 370 psig from pressure transmitter PT-RC-402 and 400 psig on PT-RC-403.
The overpressure protection system (OPPS) was in service.
A cooldown to Mode 5 was in progress.
Summary:
Pressurizer power operated relief
- valvo, PCV-RC-455C, with a
nominal OPPS relief setpoint of 405
- psig, momentarily opened during start of the "A"
residual heat removal pump due to a
pressure increase following the pump start.
The pressure transmitter which supplies the OPPS signal was within 5 psi of the setpoint'and upon the start of the pump, the pressure increase was sufficient to cause opening of PCV-RC-455C.
There were no challenges to the pressurizer safety valves during the period.
9503010320 950217 PDR ADOCK 05000334 fk 9
R PDR
F ~
_f B50 ar Valley Powsr Station, Unit No. 1 and No.
2.
' Annual Report of All Challenges to the Pressurizer' Power F
Operated Relief or' Safety Valves Page 2 Unit 2:
There were no challenges to the pressurizer safety or power operated relief. valves at Unit 2
during 'the period of January 1, 1994, to j
December 31, 1994.
Sincerely, i
f qcd ey George S. Thomas-t cc:
Mr.
L. W.
Rossbach, Sr. Resident Inspector Mr.
T. T. Martin, NRC Region I Administrator l
Mr.
G.
E.
Edison, Project Manager r
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