ML20117K593
| ML20117K593 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 09/05/1996 |
| From: | Roche M GENERAL PUBLIC UTILITIES CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 6730-96-2264, SR-96-001, SR-96-1, NUDOCS 9609120015 | |
| Download: ML20117K593 (2) | |
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l GPU Nuclear, Inc.
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U.S. Route #9 South l
NUCLEAR Post Office Box 388 Forked River, NJ 087310388 Tel 609-9714000 September 5,1996 6730-96-2264 U. S. Nuclear Regulatory Commission Attn.: Document Control Desk Washington, DC 20555
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Dear Sir:
Subject:
Oyster Creek Nuclear Generating Station -
Docket No. 50-219 l
Special Repoit 96-001 Enclosed is Special Report 96-001. This occurrence did not impact the health and safety of the public.
If any additional information or assistance is required, please contact Mr. John Rogers of my staff at 609.971.4893.
y Michael B. Roche Vice President and Director Oyster Creek l
MBPJJJR i
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Oyster Creek NRC Project Manager
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Administrator, Region I l
Senior Resident Inspector i
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I 9609120015 960905 PDR. ADOCK 05000219 S
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I Oyster Creek Nuclear Generating Station i
Special Report:
SR 96-001 Report Date:
Date of Occurrence:
August 6,19%
Identification of Occurrence:
l The High Range Radioactive Noble Gas Effluent Monitor (Stack RAGEMS) was inoperable
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for a period greater than seven days. This is a condition which requires a Special Report as described in Technical Specification 3.13.H(2).
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l Description of Occurrence:
On August 6,1996, the Stack RAGEMS High Range Monitor was removed from service and l
declared inoperable to allow a secondary calibration in accordance with the Master i
Surveillance Schedule. This surveillance is required every 20 months. Difficulties were l
encountered which required component replacement. On the seventh day out of service, while l
the solid source calibration check was in progress to allow the return of the instrument to operability, an interlock on the source malfunctioned. The decision was made to return the source to the vendor for repair before allowing any further usage of the source.
Upon the return of the source from the vendor, the secondary calibration was again performed.
l The results did not meet the acceptance criteria. The returned source was then verified to be j
l accurate by the successful completion of a secondary calibration of the Turbine Building RAGEMS High Range Monitor. A course of action for returning the Stack RAGEMS High Range instrument has been developed. A revision to this Special Report detailing the results of this effort will be submitted prior to restart from the 16R refueling outage.
There are no Technical Specification required compensatory actions or limiting conditions for operation. However, the bases of the Technical Specifications state:
"The capability is provided to detect and measure concentrations of noble gas fission products in... plant gaseous effluents...during and following an accident....These monimrs augment the capabilities provided by the Post 4
Accident Sampling System....The Post Accident Sampling System represents a preplanned alternate method to the high range radiation monitors..."
As the Post Accident Sampling System was and is fully operable during this occurrence, the inoperability of this monitor has minimal safety significance.
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