ML18058B005
| ML18058B005 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 07/30/1992 |
| From: | Smedly CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | Joseph Sebrosky NRC |
| References | |
| REF-PT21-92 23967, NUDOCS 9208140134 | |
| Download: ML18058B005 (1) | |
Text
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DATE: 07/30/92 FACILITY: PALISADES REGION:
3 NOTIFICATION UNIT:
[1] [
]
[. ]
STATE: MI NOTIFICATION. TIME:~. 12_: 48 [ET]
RX TYPE: [1] CE EVENT~' DATE:
077f21/92
- EVENT TIME:..
-.. J.:2.:.0 0 [EDT l NRC NOTIFIED BY: SMEDLY_
LAST UPDATE DATE:.
07 /30/92 HQ OPS~ OFFICER: - - JOS~H':i:SEBROSKY*
NOTIFICATIONS' EMERGENCY *CLASS :J-. NOT::::.AP:i>,L.ICABLE;:**
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10 CFR SECTION:
CDEG" 21. 21 (c) (3) ( iy DEFECTS1NONCOMPLIANCE'"
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~IT SCRAM CODE I RX CRIT,INIT PWRI INIT RX MODE CURR PWRI CURR-RX MODE'
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1 N
y 99 POWER OPERATION 99 POWER OPERATION EVENT TEXT PREMATURE LIFTING OF RELIEF VALVE DETERMINED TO BE RELATED TO THE MANUFACTURE OF THE VALVE.
RELIEF VALVE RV-3128, SAFETY INJECTION TANK T-82B. RELIEF VALVE, LIFTED PREMATURELY ON MAY 13, 1992 AND AGAIN ON JULY 1, 1992.
SUBSEQUENT REMOVAL AND TESTING OF THE VALVE DETERMINED THE CAUSE TO BE MISALIGNMENT OF THE SPRING ADJUSTMENT SCREW BORE IN THE BONNET OF THE VALVE.
THIS MISALIGNMENT CREATED INCONSISTENT RELIEF VALVE SETPOINTS AND RESET VALUES.
THE RELIEF VALVE IS A FARRIS RELIEF VALVE MODEL NUMBER 2745PKD/S4.
THE LICENSEE HAS NOT EXPERIENCED PREVIOUS PROBLEMS OF THIS NATURE.
THE LICENSEE HAS 23 OF THESE MODEL VALVES IN SAFETY AND NON-SAFETY RELATED APPLICATIONS IN THE PLANT.
920130
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