ML18149A026
| ML18149A026 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 01/24/1986 |
| From: | Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | Harold Denton, Rubenstein L Office of Nuclear Reactor Regulation |
| References | |
| 85-879, NUDOCS 8601300106 | |
| Download: ML18149A026 (2) | |
Text
e VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 W. L. STEWART V:rcE ;E'RESIDENT NUCLEAR OPERATIONS January 24, 1986 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation Attn:
Mr. Lester S. Rubenstein, Director PWR Project Directorate #2 Division of PWR Licensing-A U. S. Nuclear Regulatory Commission Washington, D.C.
20555 Gentlemen:
VIRGINIA ELECTRIC AND POWER COMPANY SURRY POWER STATION UNIT NO. I Serial No.85-879 E&C/RRC/psj:2011N Docket No.
50-280 License No. DPR-32 APPENDIX 11R 11 MODIFICATION - NEUTRON FLUX MONITORING In Attachment 1, Part D of 11Virginia Electric and Power Company's 1982 Appendix 11R 11 Report, 11 transmitted to the NRC by letter Serial No. 363 dated June 18, 1982, we committed to having an installed and functioning Neutron Flux Monitoring capability that has Appendix 11R 11 separation.
We had originally intended to meet this commitment by installing two new channels of Neutron Flux Monitoring.
Due to equipm~nt problems, we were unable to complete installation of the second channel. It was planned that the Appendix 11R 11 separation criteria would be met between the first channel and the original Westinghouse Neutron Flux Monitoring Channels.
Subsequently, review indicates that the Unit 1 installation does not strictly conform to Appendix 11R 11 separation criteria.
We have determined that the existing Unit 1 configuration provides reasonable assurance that the source range neutron flux indication will be maintained even in the event of a fire inside containment and that no additional compensatory measures are required.
There are three channels of source range neutron flux indication, each of which is routed in a separate conduit inside containment. There is only one point where the channels do not have the required separation. At the point of minimum separation 9 having three separate channels in three separate conduits, plus having a very limited amount of combustible material in the area provides an adequate measure of protection against damage by fire.
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8601300106-860124~~
PDR ADOCK 05000286' F
e y1ROINIA ELEcTRic AND PoWER CoMPANY To Harold R. Denton We expect to achieve planned separation by installing the detector and meter for the new second channel by no later than the end of the next Unit 1 refueling outage (currently scheduled to begin May 9, 1986).
(\\e:y truly y.ours,
~'t~
W. L. Stewart cc:
Mr. Roger D. Walker, Director Division of Reactor Projects NRC Region II Mr. Donald J. Burke NRC Resident Inspector Surry Power Station Mr. Terence L. Chan NRC Surry Project Manager PWR Project Directorate #2 Division of PWR Licensing-A