ML14184A599
| ML14184A599 | |
| Person / Time | |
|---|---|
| Site: | Robinson  |
| Issue date: | 05/07/1984 |
| From: | Varga S Office of Nuclear Reactor Regulation |
| To: | Utley E CAROLINA POWER & LIGHT CO. |
| Shared Package | |
| ML14184A600 | List: |
| References | |
| NUDOCS 8405210357 | |
| Download: ML14184A599 (3) | |
Text
DISTRIBUTION May 7, 1984 D
Docket No. 50-261 ORB#1Rdg Gray File NRC PDR L PDR CParrish Mr. E. E. Utley, Executive Vice President GRequa Power Supply and Engineering & Construction DEisenhut Carolina Power and Light Company OELD Post Office Box 1551 EJordan Raleigh, North Carolina 27602 JNGrace ACRS (10)
Dear Mr. Utley:
SUBJECT:
ADEQUACY OF STATION ELECTRIC DISTRIBUTION VOLTAGE Carolina Power and Light (CP&L) was requested by NRC letter dated August 8, 1979 to review the subject matter. The review was to consist of:
a) Determining and analytically the capacity and capability of the offsite p'ower system and onsite distribution system to automatically start, as well as operate, all required loads within their required voltage ratings in the event of 1) an anticipated transient, or 2) an accident (such as LOCA) without manual shedding of any electric loads.
b) Determining if there are any events or conditions which could result in the simultaneous or, consequential loss of both required circuits from the offsite network to the onsite electric distribution system and thus violating the requirements of GDC 17.
CP&L responded by letters dated October 5, 1979, July 23, 1980, October 14, 1982 and March 23, 1983. We requested our contractor, Lawrence Livermore (LLL) to review these submittals.
We concurred with LLL findings that additional information was required before we could conclude that the electrical distribution systems at H. B.
Robinson Unit No. 2 are adequate to maintain the voltage within the design limits of the required Class 1E equipment. The LLL report and a request for additional information were transmitted you by letter dated January 19, 1984. You provided additional information on March 9, 1984. We have reviewed that submittal and have concluded that with your commitment to provide Technical Specifications regarding backfeeding through the main and unit auxiliary transformers, that the H. B. Robinson Unit 2 design is 8405210357 940507 PDR ADOCIC 05000261 P
Mr. E. E. Utley 2 -
May 7, 1984 acceptable with respect to the adequacy of station electric distribution voltage. Our reivew of your Tehnical Specifications, when submitted, will be handled as a separate plant specific item. Enclosed is a copy of our final Safety Evaluation.
Steven A. Varga, Chief Operating Reactors Branch #1 Division of Licensing
Enclosure:
As stated cc:
See next page ORB
- DL GR ua;ps aa 57 /84
/84
Mr. E. E. Utley H. B. Robinson Steam Electric Carolina Power and Light Company Plant 2 cc:
G. F. Trowbridge, Esquire Shaw, Pittman, Potts and Trowbridge 1800 M Street, N.W.
Washington, DC 20036 Regional Radiation Representative EPA Regiona IV 345 Courtland Street, N.E.
Atlanta, GA 30308 Mr. McCuen Morrell, Chairman Darlington County Board of Supervisors County Courthouse Darlington, South Carolina 29535 State Clearinghouse Division of Policy Development 116 West Jones Street Raleigh, North Carolina 27603 Attorney General Department of Justice Justice Building Raleigh, North Carolina 27602 U.S. Nuclear Regulatory Commission Resident Inspector's Office H. B. Robinson Steam Electric Plant Route 5, Box 413 Hartsville, South Carolina 29550 James P. O'Reilly Regional Administrator - Region II U.S. Nuclear Regulatory Commission 101 Marietta Street Atlanta, GA 30303 Mr. R. Morgan General Manager H. B. Robinson Steam Electric Plant Post Office Box 790 Hartsville, South Carolina 29550