ML18139B698
| ML18139B698 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 01/06/1982 |
| From: | Varga S Office of Nuclear Reactor Regulation |
| To: | Leasburg R VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| References | |
| GL-81-14, NUDOCS 8201270727 | |
| Download: ML18139B698 (3) | |
Text
.,.,
e DISTRIBUTION Dockets JAN O o 1982 NRC PDR L PDR Docket Nos. 50-280 and 50-281 Mr. R.H. Leasburg Vice President - Nuclear Operations Virginia Electric and Power Company Post Office Box 26666 Richmond, Virginia 23261
Dear Mr. Leasburg:
TERA NSIC ORB#l Rdg DEisenhut OELD I E-3 ACRS-10 CParrish DNei ghbors Gray Fi 1 e We ha.ve reviewed your July 16, 1981 response to NRC Gener,i,c letter 81-14 concerning the seismic qua1 ification of the auxiliary feedwater system for Surry Power Station, Unit Nos. 1 and 2.
He find that we need additional i'nformation to continue our review.
Please provide the information indicated in the enclosure within 30 days o.f receipt of this 1 etter.
Enclosure:
As stated cc w/enclosure:
See next page Sincerely, Original signed bY;
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..-;-......_.., -:1 Steven A. Varga~ Chief Operating Reactors Branch #1 Division of Licensing
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l NRG FORM 318 (10-80) NRCM 0240 OFFICIAL RECORD COPY USGPO: 1981-335*960 '
e Mr. R. H. Leasburg Vi"rgi ni a Electric and Pov,er Company cc:
Mr. Michael W. Maupin Hunton and Williams Post Office Box 1535 Richmond, Virginia 23213 Mr. J. L. Wilson, Manager P. O. Box 315 Surry, Virginia 23883 Sv,em Library College of \\*Jilliam and Mary Williamsburg, Virginia 23185 Donald J. Burke, Resident Inspector Surry P0v1er Station U. s. Nuclear Regulatory Commission Post Office Box 166 Route 1 Surry, Vi rgi ni ~. 23283 Mr. J. H. Fergus..on Executive Vice President - Power Virginia Electric and Pm,er Company Post Office Box 26666 Richmond, Virginia 23261 e
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.,J REQUEST FOR ADDITIONAL INFORMATION ON SEISMIC QUALIFICATION OF THE AUXILIARY FEEDWATER SYSTEM Surry Nuclear Plant Units 1 & 2 Question 1 Provide a schematic sketch of the auxiliary feedwater (AFW) system from suction to discharge, including t~e following:
(a) Water source(s), heat sink, piping, and all major mechanical equipment.
- (b) Connected branch piping up to and including the second valve which is normally closed or capable of aut~matic closure when safety function.is required.
(c)
Any branch piping outside the AFW system boundary to a point of three orthogonal restraints if any portion of the branch piping is structurally coupled to the AFW system boundary such that the seismic response of the branch line transmits loads to the AFW system.
(d) All structures supporting or housing the AFW system components.
Identify any connected branch piping associated with the AFW system that does not fully meet the boundary requirements specified in items (b) and (c) above.
Indicate the Seismic Category 1 items and boundaries on the sketch. Justify the acceptability of any deviations.