ML19296C927
| ML19296C927 | |
| Person / Time | |
|---|---|
| Site: | Zimmer |
| Issue date: | 02/11/1980 |
| From: | Stolz J Office of Nuclear Reactor Regulation |
| To: | Borgmann E CINCINNATI GAS & ELECTRIC CO. |
| References | |
| NUDOCS 8002290078 | |
| Download: ML19296C927 (3) | |
Text
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UNITED STATES NUCLEAR REGULATORY COMMISSION e
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WASHINGTON, D. C. 20555
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FEB 111930 1
Docket No:
50 358 Mr. Earl A. Borgmann Vice President - Engineering The Cincinnati Gas & Electric Company P. O. Box 960 Cincinnati, Ohio 45201
Dear Mr. Borgmann:
SUSJECT:
REQUEST FOR ADDITIONAL INFORMATION (WM. H. ZIMMER NUCLEAR POWER STATION)
In our letter of January 17, 1980, we transmitted a staff position concerning your operating license application for the Zimer Nuclear Power Station, specifically regarding full-load testing of transformers providing power to vital buses. This is to infonn you that this position has been revised to reflect the testing requirements of the Power Systems Branch position on degraded grid voltage, which has been applied to all plants in licensing review since 1976.
Our revised position is enclosed. The te.t description in Chapter 14 of your FSAR should be revised to reflect this position (Enclosure) instead of the position previously transmitted.
Please contact us if you desire any discussion or clarification of this request.
Sincerely, Ci
/
LU 1, Jofi F. Stolz, Chief l_i t Water Reactors ranch No. 1 l
ision of Project Management
Enclosure:
Request for Additional Information cc:
See next page 0SV g
8002290 q
ENCLOSURE 1 STAFF POSITION (Revised)
It has come to our attention that some applicants did not intend to conduct confirmatory tests of some distribution systems and transformers supplying power to vital buses asrequired by Position 3 of Regulatory Guide 1.68, and more specifically by Part 4 of the staff position on degraded grid voltage (applied to all plants in licensing review by the Power Systems Branch since 1976).
Part 4 of the degraded grid voltage position states as follows:
"4. The voltage levels at the safety-related buses should be optimized for the full load and minimum load conditions that are expected throughout the anticipated range of voltage variations of the offsite power source by appropriate adjustment of the voltage tap settings of the intervening transformers. We require that the adequacy of the design in this regard be verified by actual measurement and by correlation of measured values with analysis results.
Provide a description of the method for making this verification; before initial reactor power operation, provide the documentation required to establish that this verification has been accomplished."
Your test description in FSAR Chapter 14 does not contain sufficient detail for us to determine if you intend to conduct such a test.
It is our position that confirmatory tests of all vital buses must be conducted including all sources of power supplies to the buses. Modify your test description to indicate that this testing will be conducted in accordance with Regulatory Guide 1.68 and the above cited position.
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FED ' ' : g cc: Troy B. Conner, Jr., Esq.
David B. Fankhauser, PhD Conner, Moore & Corber 3569 Nine Mile Road 1747 Pennsylvania Avenue, N. W.
Cincinnati, Ohio 45230 Washington, D. C.
20006 Dr. Frank F. Hooner Mr. William J. Moran School of Natural Resources General Counsel University of "ichigan The Cincinnati Gas and Electric Ann Arbor, flichigan 49109 Company P. O. Box 960 Mr. Stephen Schumacher Cincinnati, Ohio 45201 Miami Valley Power Project P. O. Box 252 fir. William G. Porter, Jr.
Dayton, Ohio 45401 Porter, Stanley, Arthur and Platt lis. Augusta Prince, Chairperson 37 West Broad Street 601 Stanley Avenue Columbus, Ohio 43215 Cincinnati, Ohio 45226 fir. Steven G. Smith, Manaaer Charles Bechhoefer, Esa., Chairman Engineering & Project Control Atomic Safety & Licensing Board The Dayton Power and Light Panel Company U. S. Nuclear Regulatory Comission P. O. Box 1247 Washington, D. C.
20555 Dayton, Ohio 45401 Mr. Glenn 0. Bright J. Robert Newlin, Counsel Atomic Safety and Licensing The Dayton Power and Light Board Panel Company U. S. Nuclear Regulatory Comission P. O. Box 1247 Washington, D. C.
20555 Dayton, Ohio 45401 Leah S. Kosik, Esq.
Mr. James D. Flynn 3454 Cornell Place Manager, Licensing Cincinnati, Ohio 45220 Environmental Affairs The Cincinnati Gas and W. Peter Heile, Esq.
Electric Company Assistant City Solicitor P. O. Box 960 Room 214, City Hall Cincinnati, Ohio 45201 Cincinnati, Ohio 45220 Mr. J. P. Fenstermaker Atomic Safety and Licensing Board Senior Vice President-0perations Panel Columbus and Southern Ohio V. S. Nuclear Regulatory Comission Electric Company Washington, D. C.
20555 215 North Front Street Columbus, Ohio 43215 Atomic Safety and Licensing Appeal Board David Martin, Esq.
U. S. Nuclear Regulatory Comission Office of the Attorney General Washington, D. C.
20555 209 St. Clair Street First Floor Resident Inspector /Zimer
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Frankfort, Kentucky 40601 U. S. Nuclear Regulatory Comission P. O. Box 58 New Richmond, Ohio 45157