ML20069A640
| ML20069A640 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 03/01/1983 |
| From: | Sinclair J VERMONT YANKEE NUCLEAR POWER CORP. |
| To: | Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| REF-SSINS-6820 FVY-83-16, IEB-79-02, IEB-79-14, IEB-79-2, NUDOCS 8303160167 | |
| Download: ML20069A640 (2) | |
Text
VERMONT YANKEE NUCLEAR POWER CORPORATION
~
2.C.2.1 RD 5. Box 169. Ferry Road, Brattleboro, VT 05301 nEPu To y
ENGINEERING OFFICE 1671 WORCESTER ROAD s
FRAMINGHAM. MASSACHUSETTS 01701 TELEPHONE 617-872-6100 March 1,1983 United States Nuclear Regulatory Commission Of fice of Inspection and Enf orcement Region 1 631 Park Avenue King of Prussia, PA 19406 Attention:
Mr. Ronald C. Haynes Regional Administrator
References:
(a) License No. DPR-28 (Docket No. 50-271)
(b) Letter, VYNPC to USNRC, WVY 80-106, dated July 25, 1980 (c) Letter, VYNPC to USNRC, FVY 81-97, dated June 30, 1981 (d) letter, USNRC to VYNPC, " Order for Modification of License," dated January 13, 1981 (e) letter, USNRC to VYNPC, dated November 25, 1981 (f) Letter, USNRC to VYNPC, dated January 14, 1982
Subject:
Seismic Piping Reanalysis Program
Dear Sir:
In Ref erence (b), we outlined an extensive program with regard to upgrading the analyses f or seismic piping at our f acility.
This ef f ort was initiated by us in response to the concerns expressed in I&E Bulletins 79-02 l
and 79-14.
The purpose of this letter is to inf orm you of the present status of our reanalysis program.
In Reference (c), we indicated that the necessary reanalyses would be completed by October 1, 1982. As of September 1982, approximately 75% of this ef f ort was completed. At that point in time, results of torus attached piping load analyses were received from our consultant.
Consistent with the objectives of the seismic reanalysis program and in consideration of the requirements of the January 13, 1981, " Order f or Modification of License,"
issued via Reference (d) and modified via References (e) and (f); which requires us to complete our Mark I Containment Long-Term Program prior to starting up f rom the 1983 refueling outage; we were obligated to redirect our primary ef f ort s towards torus-attached piping.
Due to this re-direction of i
ef f orts and the resources necessary to design supports just f or the torus piping, we find that our schedule f or completing the entire seismic reanalysis program was overly optimistic.
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8303160167 830301 PDR ADOCK 05000271 f
G PDR Y
U. S. Nuclear Regulatory Commission March 1,1983 Attention:
Mr. Ronald C. Haynes Page 2 In light of the above, we now expect to complete the seismic piping reanalysis program by July 1,1983.
Should you have any questions in this matter, please contact us.
Very truly yours, VERMONT YANKEE NUCLEAR POWER CORIORATION
. 8. k alub J. B. Sinclair Licensing Engineer JBS /dd
.