ML20245E754
| ML20245E754 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 06/09/1989 |
| From: | Fitzpatrick E GENERAL PUBLIC UTILITIES CORP. |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8906270427 | |
| Download: ML20245E754 (3) | |
Text
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GPU Nuclear Corporation Nuclear
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- r388 Forked River, New Jersey 08731-0388 609 971-4000 i
Writer's Direct Dial Number:
l June 9,1989 l
Director of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Station P1-137 3
Washington, DC 20555 j
Dear Sirs
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Subject:
Oyster Creek Nuclear Generating Station i
Docket No. 50-219 Special Report 89-02
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Inoperable Fire Suppression Water System j
Please find enclosed one (1) copy of Special Report 89-02.
This submittal meets the reporting requirements of Technical Specification l
3.12.8.3 (Inoperable fire suppression water system) and 3.12.B.2 (Fire pump i
not restored to operable status within 7 days).
If any questions or comments should arise, please contact Michael Heller, Oyster Creek Licensing Engineer, at (609)971-4680.
I Very truly yours,
]
O E. E. Fitz a rick Vice President and Director Oyster Creek EEF/MGH/dmd (0768A:03)
Enclosure cc: Mr. William T. Russell, Administrator Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 NRC Resident Inspector Oyster Creek Nuclear Generating Station Forked River, NJ 08731
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GPU Nuclear Corporat6on is a subsidiary of the General Public Utilities Corporation
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i OYSTER CREEK NUCLEAR GENERATING ' STATION FORKED RIVER, NEW JERSEY 08731 SPECIAL REPORT 89-02 REPORT DATEE June 9,1989 1
OCCURRENCE DATE
.May 26,1989 IDENTIFICATION 0F-0CCURRENCE At approximately 1715 hours0.0198 days <br />0.476 hours <br />0.00284 weeks <br />6.525575e-4 months <br /> on May 26, 1989, Fire Pump / Diesels 1-1 and:1-2 were declared inoperable.
This condition is reportable as specified in j
Technical Specification 3.12.B.3.
=j Furthermore, Fire Pump / Diesel 1-1 was not restored to operable status w'ithin l
7 days. This is also reportable as specified in Technical Specification j
3.12. B. 2.
1 DESCRIPTION OF OCCURRENCE During performance of the fire pump / diesel functional. test,' both diesels failed to meet the acceptance criteria. Neither diesel started within the acceptable pressure range during the automatic sequential start test.. Also, the 1-2 pump discharge pressure did not meet the' acceptance cri',eria of 156 l
psig at > 2000 gpm..Both fire pump / diesels were declared inoper ible at 1715 l
hours on hay 26, 1989.
While trying to recalibrates the presst:'; switch for.
the automatic start function for the 1-1 diesel, the turbocharger on the diesel failed. This-had prolonged the inoperability of fire pump / diesel 1-1 past the acceptable technical specification limit of seven (7) days.
l-l ANALYSIS OF OCCURRENCE With both fire pump / diesels being inoperable, all fire suppression systems.
l were rendered inoperable due to loss of fire suppression water. The 1
redundant backup fire suppression pump, which previously had been out of service, was declared operable at 0530 hours0.00613 days <br />0.147 hours <br />8.763227e-4 weeks <br />2.01665e-4 months <br /> on May 27, 1989.. This provided l
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EPECI AL REPORT. 89-02
'PAGE'2 I
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a source of water for the plant fire suppression water systems and eliminated the need to shutdown the reactor within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> as specified in Technical Specification 3.12.B.3.a.
After minor repairs, Fire Pump / Diesel 1-2 was i
tested and declared operable at 1545 hours0.0179 days <br />0.429 hours <br />0.00255 weeks <br />5.878725e-4 months <br /> on May 27, 1989.
Since the plant I
was without fire suppression water for a relatively short period of time l
(less than 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />) and one fire pump / diesel was returned to service within g
24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, the safety significance of this event is minimal.
i CORRECTIVE ACTION 3
Immediately following declaring both fire pump / diesels inoperable, a work request was issued to restore the diesels to an operable status.
The pressure switch and its associated recorder for the 1-2 diesel were l
recalibrates along with the pump discharge pressure gauge on May 27, 1989.
J The functiona? test was again performed for fire pump / diesel 1-2 and it was i
1 declared operable on May 27,1989 at 1545 hours0.0179 days <br />0.429 hours <br />0.00255 weeks <br />5.878725e-4 months <br />.
While working to recalibrates the pressure switch and its associated recorder on the 1-1 diesel, the diesel turbocharger failed.
The turbocharger was rebuilt and Fire Pump / Diesel 1-1 was tested and declared operable on June 9, i
1989 at approximately 1100 hours0.0127 days <br />0.306 hours <br />0.00182 weeks <br />4.1855e-4 months <br />.
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The long term corrective action as a result of this event is to evaluate replacement pressure switches and recorders for the fire diesels.
The current instruments are difficult to calibrate and frequently do not stay in calibration. Also, they are obsolete with no replacement parts available.
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