ML18139B758
| ML18139B758 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 02/18/1982 |
| From: | Varga S Office of Nuclear Reactor Regulation |
| To: | Leasburg R VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| References | |
| NUDOCS 8203020321 | |
| Download: ML18139B758 (4) | |
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e Docket Nos. 50-280 and 50-281 Mr. R.H. Leasburg, Vice President Nuclear Operations Virgin.ia. f:lectric and Power Company Post Office Box *26666 Richmond, Virginia 23261
Dear Mr. Leasburg:
DISTRIBUTION Dockets NRC PDR L PDR NSIC ORB#l Rdg DEisenhut OELD IE ACRS-10 CParrish DNeighbors Gray File He are reviewing the Surry Power Station~ Unit Nos. 1 and 2, Inservice Inspection Program submitted by your letters, Serial Numbers 944 and 945, dated December 15, 1980.
We find that we need additional information so that we may contanuec:.our review.
Please respond to the endiosed questions within 30 days of receipt 6f.
tlli s 1 etter.
Enclosure:
As stated cc w/enclosure:
See next page Sincerely, Original signed byz S 0 A. Varga Steven A. Varga, Chief Operating Reactors Branch #1 Division of Licensing NRG FORM 318 (10-80) NRCM 0240 OFFICIAL RECORD COPY USGPO: 1981-335-960
Mr. R. H. Leasburg vi*rgi ni a Electric and Pm1er 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 Swem Library College of William and Mary Williamsburg, Virginia 23185 Donald J. Burke, Resident Inspector Surry Pm,er Sta ti on U. s. Nuclear Regulatory Commission Post Office Box 166 Route 1 Surry, Virginia 23883 Mr. J. H. Ferguson Executive Vice President - Power Virginia Electric and Power Company Post Office Box 26666 Richmond, Virginia 23261 Ronald C. Haynes Regional Administrator - Region I U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406 e
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e REQUEST FOR ADDITIONAL INFORMATION INSERVICE INSPECTION PROGRAM SURRY #1
- 1.
Regenerative Heat Exchanger, Head-to-Shell and Shell-to-Tubesheet Welds, category C-A, item Cl.l.
Code relief is requested because of radiation exposure.
Additional questions are as follows:
(a) To what value could the radiation level be lowered during an extended outage with flushing, shielding and decay?
(b) What would then be the total estimated man-rem exposure to conduct the examination as required by code?
(c) What would then be the total estimated man-rem exposure (1) to examine 10% of one weld as proposed, or (2) to fully examine one weld?
(d) Why is this piece of equipment a Class 2 component in Surry 1 and a Class 1 component in Surry 2?
- 2.
Class 1 circumferential and longitudinal pipe welds (item 84.5), Branch pipe connection welds exceeding 6-inches diameter (item 84.6), both in category B-J.
You have listed welds requiring code relief under these items.
These welds represent approximately what percent of the total number of welds required to be examined under each item?
- 3.
Class 2 circumferential butt welds (item C2.1), categories C-F and C-G:
You have listed welds requiring code relief under this item.
In each category, these welds represent approximately what percent of the number of welds required to be examined under this item?
2/8/82 1
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y REQUEST FOR ADDITIONAL INFORMATION INSERVICE INSPECTION PROGRAM SURRY #2
- 1.
Regenerative Heat Exchanger, Head-to-Shell and Shell-to-Tubesheet Welds, category B-B, item B3.1.
Code relief is requested because of radiation exposure. Additional questions ~re as follows:
(a) To what value could the radiation level be lowered during an extended outage with flushing, shielding and decay?
(b) What would then be the total man-rem exposure to conduct the exami-nation as required by code?
(c) What would be the total estimated man-rem exposure to examine 10% and 100% of just one weld?
(d) If code relief were not granted, what alternative examinations would be proposed?
- 2.
Regenerative Heat Exchang.er, Nozzle-to-Head Welds, category B-0, item B3.2.
Please provide sketch showing joint configuration and explain why volumetric examination is not practical.
- 3.
Class 1 circumferential and longitudinal pipe welds (item B4.5), Branch connection welds exceeding 6-inches diameter (item B4.6), both in category B-J.
You have listed welds requiring code relief under these items.
These welds represent approximately what percent of the total number of welds required to be examined under each item?
- 4.
Class 2 circumferential butt welds (item C2.l), categories C-F and C-G.
You have listed welds requiring code relief under this item.
In each category, these welds represent approximately \\vhat percent of the number of welds required to be examined under this item?
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