ML19260C914
| ML19260C914 | |
| Person / Time | |
|---|---|
| Site: | Zion File:ZionSolutions icon.png |
| Issue date: | 01/17/1980 |
| From: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Reed C COMMONWEALTH EDISON CO. |
| References | |
| NUDOCS 8002070119 | |
| Download: ML19260C914 (2) | |
Text
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GLEN ELLYN, ILUNOIS 60 9 37 MVUi1755C Docket No. 50-295 Docket No. 50-304 Commonwealth Edison Company ATTN:
Mr. Cordell Reed Vice President Post Of fice Box 767 Chicago, IL 60690 Gentlemen:
This letter confirms the results of the meeting on January 10, 1980, between representatives of Commonwealth Edison Company and the Nuclear Regulatory Commission staff regarding the twelve (12) inch Bergen-Paterson steam generator snubbers at the Zion Nucles Power Station.
During this meeting we concurred in your planned schedule for returning Zion Units 1 and 2 to service.
It iL aur understanding, based on the meeting of January 10, that you will take the following additional corrective actions:
1.
The 12 inch Bergen-Paterson snubber reservoir levels will be checked weekly when the unit is in service until the snubbers are inspected, repaired and modified. Continuation of this weekly check on Unit 1 beyond the end of the Unit 2 outage is contingent upon the evaluation of snubber test results.
2.
Immediately following an earthquake, the 12 inch Bergen-Paterson snubber reservoir levels will be checked and fluid added as necessary.
3.
For every reactor temperature change in excess of 100*F, the 12 inch Bergen-Paterson snubber reservoir levels will be checked and fluid added as necessary.
4.
A procedure will be developed to functionally test the 12 inch Bergen-Paterson snubbers. The valve control block will be in-cluded as part of the snubber test. Test acceptance criteria will be included in this procedure. This proceaure will be re-viewed by the NRC staff prior to its use.
1936 280
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h.T 17 19.t Commonwealth Edison Company 5.
Two randomly selected Unit 2,12 inch Bergen-Paterson snubbers shall be tested prior to their repair and modification using the above procedure.
6.
Two of the modified Unit 2,12 inch Bergen-Paterson snubbers shall be tested using the above procedure.
7.
All 16 of the Unit 2, 12 inch Bergen-Paterson snubbers will be inspected, repaired, and modified during the May 1980, refueling outage.
8.
A report of all laboratory test results, snubber non-conformance evaluations and corrective actions, and any significant increase in snubber seal leakage will be submitted to us promptly.
The continued operation of Unit 1 is contingent upon NRC staff accept-ance of the Unit 2 anubber test results.
Sincerely, bb}Y James G. Kepp er Director cc:
Mr. D. L. Peoples, Director of Nuclear Licensing Mr. N. Wandke, Plant Superintendent Central Files Reproduction Unit NRC 20b PDR Local PDR NSAC TIC Mr. Dean Hansell, Office of Assistant Attorney General 1936 281
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