ML19347C826
| ML19347C826 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 09/10/1973 |
| From: | Rone A JERSEY CENTRAL POWER & LIGHT CO. |
| To: | |
| References | |
| AO-73-21, NUDOCS 8103040989 | |
| Download: ML19347C826 (2) | |
Text
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- Date: 9/10/73
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Time: 3:00 a.m.
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/ ABNORMAL OCCURRENCE REPORT NO. 73-21
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SUBJECT:
Failure of 21 Ilydraulic Shock and Sway Arrestors on piping systems in the Drywell, including units on both Core Spray and both
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Isolation Condenser loops.
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This event is considered to be an abnormal occurrence as defined in the Technical Specifications, paragraph 1.15.D. Notification of this event as required by the Technical Specifications, para-
. grap:16.6.2.a, was made to AEC Region I, Directorate of Regulatory
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Operations, by telephone on Monday, September 10, 1973, at 12:45 p.m., and personally to Mr. E. Greeman on Monday, September 10, 1973.
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SITUATION: The plant was shutdown on September 8,1973 for the purpose of inspecting the flydraulic Shock and Sway Arrestors located on
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piping systems throughout the Drfwell.
CAUSE: The snubbers were made inoperable due to a loss of hydraulic fluid.
REMEDIAL ACTION:
The failed liydraulit Shock and Sway Arrestors were replaced using
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snubbers ' rebuilt with seal kits supplied by the Bergen Paterson Pipe Support Company. The new' seals are of'a different type, which according to Bergen Paterson, will provide a longer seal life.
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AbnoEnal Occurrence .
September 10, 1973 - -
Report No. 73-21 ,
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SAFETY SIGNIFICANCE:
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The loss of snubber operability resulted in a reduction in the ability of the plant to safely survive a design bases earthquake.
The failures were such that they affected both Core Spray and
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