ML20028G149
| ML20028G149 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 01/27/1983 |
| From: | Midura H Public Service Enterprise Group |
| To: | Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20028G150 | List: |
| References | |
| NUDOCS 8302070457 | |
| Download: ML20028G149 (3) | |
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O PSEG Public Service Electric and Gas Company P.O. Box E Hancocks Bridge, New Jersey 08038 Salem Generating Station January 27, 1983 Mr. R. C. Haynes Regional Administrator USNRC Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406 1
Dear Mr. Haynes* !
LICENSE NO. DPR-75 DOCKET NO. 50-311 REPORTABLE OCCURRENCE 82-157/03L Pursuant to the requirements of Salem Generating Station Unit No. 2, Technical Specifications, Section 6.9.1.9.b, we are submitting Licensee Event Report for Reportable Occurrence 82-157/03L. This report is required within thirty (30) days of the occurrence.
Sincerely yours,
// wh bc~
H. J. Midura General Manager -
Salem Operations RF:ks[bp CC: Distribution 8302070457 830127 gDRADOCK 05000311 PDR The Energy People pw 7,21&) (2iN) 1181
- .- -. .- . . . -- . - = - - - _.
Report Number: 82-157/03L 1 Report Date: 01-27-83 A
7 Occurrence Date: 12-31-82 Facility: Salem Generating Station Unit 2 Public Service Electric & Gas Company l: Hancock's Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:
1 Plant Systems - Low Pressure CO2 System - Inoperable.
This report was initiate'd by Incident Report 82-527.
l CONDITIONS PRIOR TO OCCURRENCE:
1
- Mode 1 - RX Power 64'%.- Unit Load 680 MWe.
t DESCRIPTION.OF. OCCURRENCE:
At 0530 hours0.00613 days <br />0.147 hours <br />8.763227e-4 weeks <br />2.01665e-4 months <br />, December 31, 1982, during' investigation of a Fire Protection CO3 High/ Low Pressure alarm, an operator discovered that the low press 0re CO9 storage tank pressure was 275 psig. This is less than the 285 pEig required by the Technical Specifications. The
, Low Pressure CO 2 System was declared inoperable and Action Statement j 3.7.10.3a was entered. Spaces affected included the Diesel Generator
- and Fuel Oil Storage Areas, Switchgear Rooms and Electrical Penetration Area.
3 Investigation of the problem revealed that the system. refrigeration compressor had failed to stop at.the low pressure setpoint (295 psig) and was still running. The compressor was de-energized and the pressure returned to normal. A continuous fire watch with backup fire suppression equipment was immediately established in the affected '
areas.
APPARENT CAUSE OF OCCURREMCE:
i The refrigeration compressor control pressure switch setpoint was checked and found to be satisfactory. No other problems were evident and no previous occurrences of this type had been noted. The problem
, was therefore assumed to involve an isolated failure of the pressure j switch.
) ANALYSIS OF QCCURRENCE: ,
3 .The operability of the fire suppression systems ensure.that adequate i fire suppression capability is available to confine and extinguish fires occurring in any portion of the facility where safety related i equipment is located. The collective capability of the fire
- . suppression systems is adequate to minimize the potential damage to i
safety related equipment and is a major element in the facility fire protection program.
1
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LER 82-157/03L ANALYSIS OF OCCURRENCE: (cont'd)
Action Statement 3.7.10.3a requires:
With one or more of the required low pressure coo systems inoperable, establish a continuous fire watch with backup fire suppression equipment for those areas where redundant safety systems or components could be damaged. Restore the system to operable status within 14 days or, in lieu of any other report required by Specification 6.9.1, prepare and submit a special report to the commission pursuant to Specification 6.9.2 within the next 30 days.
As noted, the required fire watch was established in compliance with the action statement. Since protection was maintained, the event involved no risk to the health and safety of the public. Due to the inoperability of a required fire suppression system, the event involved operation in a degraded mode permitted by a limiting condition for operation. The occurrence is therefore reportable in accordance with Technical Specification 6.9.1.9b.
CORRECTIVE ACTION:
The pressure switch was exercised and satisfactorily recalibrated, and the system was satisfactorily tested. The Low Pressure CO2 System was declared operable at 1120 hours0.013 days <br />0.311 hours <br />0.00185 weeks <br />4.2616e-4 months <br />, December 31, 1982, anc Action Statement 3.7.10.3a was terminated. No further action was deemed necessary in view of the isolated nature of the occurrence.
EAILilER_ DATA:
United Electric Controls Company Pressure Switch Model 364 Prepared By R. Frahm // 9. La[d~C G'eneral Manager -
i SORC Meeting No. 83-09