ML20058F278
| ML20058F278 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 10/30/1990 |
| From: | Fay C WISCONSIN ELECTRIC POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| CON-NRC-90-107, RTR-REGGD-01.097, RTR-REGGD-1.097 VPNPD-90-450, NUDOCS 9011080189 | |
| Download: ML20058F278 (2) | |
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Wisconsin 1 Electnc POWER COMPANY ni w Mowoooo Ion 2046, Mwee.wl 53201 M w 2 n 2345 VPNPD-90-450 NRC-90 107 October 30, 1990 Document Control Desk U.S. Nuclear Regulatory Commission Mail Station P1-137 Washington, DC 20555 Gentlemen:
DOCKETS 50-266 AND 50-301 ENVIRONMENTAL OUALIFICATION PROGRAM FOR REGULATORY GUIDE 1.97 INSTRUMENTS POINT BEACH NUCLEAR PLANT, UNITS 1 AND 2 On May 10, 1988, Gamma-Metrics issued a 10CFR Part 21 notification stating that, due to manufacturing problems, leaks may exist in the solder joints of either the detector assembly cable or the in-containment cable of their environmentally qualified Neutron Flux Monitor-Systems.
One channel of this system is installed in each unit at Point Beach.
In a letter to you dated June 22, 1990-(Ref. VPNPD-90-306/NRC-90-063), we notified you that since qualified test procedures, hardware fix kits, and installation procedures were still not available from Gamma-Metrics, we were proceeding with the' leak testing of our systems during each Unit's 1990 refueling outage.
The letter also stated that during the Spring 1990. refueling outage, the Unit 1 system was pressure tested.
It was determined by the test that both the.in-containment cable and the detector assembly's cable had leaks.
Both of the defective components were replaced.
The Unit 1 system has now been certified to be environmentally qualified by Gamma-Metrics.
During the Fall 1990 refueling outage, a Gamma-Metrics field service representative pressure tested our Unit 2 neutron flux monitor system cables.
Again it was-found that both the in-containment cable and'the-d6tector assembly's cable had leaks.
Both components were replaced and a final pressure test was performed' satisfactorily.
As a result, the Unit 2 system has
~ also been certified to be environmentally qualified by Gamma-Metrics.
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o Document Control Desk Oc*ober 30, 1990 Page 2 Testing and all necessary repairs are now complete at the Point Beach Nuclear Plant in regards to the 10CFR Part 21 notification issued by Gamma-Metrics on potential leaks in the cables of their neutron flux monitor systems.
The justification for continued operation provided with our August 9, 1988 letter (Ref. VPNPD 411/NRC-88-073) is no longer necessary for either Unit at Point Beach.
With the resolution of the 10CFR Part 21 notification by Gamma-Metrics, and the certification of qualification of our neutron flux monitor systems, we believe that Point Beach Nuclear Plant, Units 1 and 2, now fully conforms to the requirements of 10CFR 50.49 and our environmental qualification commitments to meet Regulatory Guide 1.97, Revision 2.
We would be pleased to answer any questions you may have regarding the above information.
Very truly 'ours,
/
hhi C.
W.. Fay Vice President Nuclear Power pek cc:
NRC Resident Inspector NRC Regional Administrator, Region III l
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