ML20148B145
| ML20148B145 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 10/27/1978 |
| From: | Stallings C VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | Harold Denton, Parr O Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7810310089 | |
| Download: ML20148B145 (1) | |
Text
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Rio rix oxn,VI ROINI A 2 0 2 e1 October 27, 1978 Mr. Harold R. Denton, Director Serial No. 607 Of fice of _ Nuclear Reactor Regulation LQA/ESG:esh Attn: ' Mr. O. D._ Parr, Chief P0/KEB Light Water Reactors Branch No. 3 i-Division of Project Management Docket No.
50-338 U. S. Nuclear Regulatory Commission License No. NPF-4 Washington, DC 20555
Dear Mr. Denton:
By our letters, Serial Nos. 301/071477, dated August 9, 1977, and 480/101977, dated December 16, 1977, we provided the Staff with information concerning our planned inservice inspection program for the first 40-month period a t North Anna U,it No.1, and requested exemption f rom certain require-ments of ASME Section XI.
During several recent telephone conversations, including a conference call on'0ctober 19, 1.978, Messrs. A. W. Dromerick and M. R. Hum of the Staf f re-quested amplification of some points in our December 16 letter. The requested information is provided below.
Wi th reference to Attachment 1, page S5.90-5, paragraph (5), the specific welds for which complete inservice examination is impractical for the first 40-month inspection period are:
Weld No.
Figure 1
55 90-10 (VRA-152) 1 21 S5 90-6 (VRA-ll2) 1 S5.90-8 (VRA-138)
BC-i S5.90-13 (VRA-210)
BC-2 SS.90-14 (VRA-211)
BC-5 55.90-15 (VRA-212)
BC-7 S5.90-15 (VRA-212)
With reference to Attachment 1, page S5 90-11, Note 10, Vepco will supplement the volumetric examination of the residual heat exchanger shell to tubesheet flange welds with a surface examination.
With reference to Attachment 2, the calibration standards used for North Anna Unit No. 1 are not cladded.
We trust that the above information will permit you to complete your review of our initial inservice inspection program.
Very truly yours, f
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C. M. Stallings 9 g~
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Vice President-Power Supply
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