ML20154H076
| ML20154H076 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 09/19/1988 |
| From: | Russell L BALTIMORE GAS & ELECTRIC CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| NUDOCS 8809210165 | |
| Download: ML20154H076 (2) | |
Text
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.q DALTIMORE l
i GAS AND ELECTRIC CHARLES CENTER P.O. BOX 1475
- BALTIMORE. MARYLAND 21203 l
l LEON B RUSSELL w...
CAL 414T Cistfl esVCL&&A #Cnt. PLA%T C4P&ATW4%T l
September 19, 1988 U. S. Nuclear Regulatory Commission Washington, DC 20555 ATTENTION:
Document Control Desk
SUBJECT:
Calvert Cliffs Nuclear Power Plant Unit Nos.1 & 2; Docket Nos. 50-317 & 50-318 Annual Report of Failures and Challenges to PORVs and Safety Valves for the Period of Acril 1.1980 throuah December 31. 1932
REFERENCES:
(a) Reply to NRC Inspection Report Nos. 50-317/88-07; $0-318/88-08, i
dated July 14, 1988.
Gentlemen:
The documentation of all feitures and challenges to pressurizer PORVs or safety valves for the period of April I, 1980 throu8h December 31, 1982 follows. This report is required by Technical Specification 6.9 l.5.c and reference (a),
- 1) On October 18, 1980, two pressurizer code safety valves' lift setpoints were found above the maximum setpoint during surveillance testing. This event is described in LER 50-317/80-60.
- 2) On January 18, 1981, a pressurizer PORY opened when a pressure
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l trans.nitter failed. This event is described in LER 50-318/81-05.
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- 3) On March 1,1981, a pressurirer PORY was isolated when it was determined i
to leak. The valve seated properly when system pressure was raised, i
This event is described in LER 50-318/81-10.
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- 4) On June 13, 1981, the pipe fittings immediately upstream of the Unit !
l and 2 pressurizer code safety vahes were determined to hase improperly sized inside diameters. This event is described in LER 50-317/81-42; 50-318/81-28.
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Document Control Desk l
- September 19, 1988 1-Page 2 i
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- 5) On July 16, 1981, a pressurizer PORY opened on an erroneous high pressure signal when a pressure transmitter was bumped. This event is described in LER 50-317/81-56.
Should you have any further questions regarding this matter, we will be pleased to discuss them with you.
Very truly yours, l
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//
l wual c,.
t L DR/JMO/sjb Attachment cc:
D, A. Brune, Esquire J. E.
Silberg, Esquire R. A.Capra.NRC i
S. A.McNeil,NRC W. T. Russell, NRC i
D. C. Trimble/V. L. Pritchett, NRC T. Magette. DNR j
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