ML20045G948

Requests Addl Info Re GL 92-01,rev 1, Reactor Vessel Structural Intrgrity, Issued on 920306 to Compile Info Necessary to Confirm That Licensees & Permit Holders Satisfy Requirements for Ensuring Reactor Vessel Integrity

ML20045G948
Person / Time
Site:	Beaver Valley
Issue date:	07/08/1993
From:	Edison G Office of Nuclear Reactor Regulation
To:	Sieber J DUQUESNE LIGHT CO.
References
GL-88-11, GL-92-01, GL-92-1, TAC-M83431, NUDOCS 9307160178
Download: ML20045G948 (4)

Text

_

a arov J

• r' g'o eq 4,.

E UNITED STATES

'ij 5

6!

NUCLEAR REGULATORY COMMISSION g.... +,/

WASHit2GTON, D.C. 2055% 0001 July 8, 1993 Docket No 50-334 Mr. J. D. Sieber, Senior Vice President l

and Chief Nuclear Officer Nuclear Power Division Duquesne Light Company Post Office Box 4 Shippingport, Pennsylvania 15077-0004

SUBJECT:

RESPONSE TO GENERIC LETTER (GL) 92-01, REVISION 1, " REACTOR VESSEL STRUCTUR.AL INTEGRITY," BEAVER VALLEY UNIT NO. 1 (TAC NO. M83431)

The purpose of this letter is to request additional information related to the subject GL.

The subject GL was issued on March 6, 1992, to compile information necessary to confirm that licensees and permit holders satisfy the requir ements for ensuring reactor vessel integrity.

In the GL, the staff requested responses to three questions. These three questions requested that information be provided regarding:

1) Appendix H to 10 CFR Part 50;

2) Appendix G to 10 CFR Part 50; and 3) Commitments made in responses to GL 88-11.

By letters dated July 8 and August 31, 1992, you responded to GL 92-01, Revision 1, by providing the information requested in the Required Information portion of the GL.

The staff has completed its initial review of your response ar-

,'s determined that additional information is needed.

Enclosed is a reque.

'dditional information (RAI).

We request that the response to the RAI...

1. ided within 60 days from receipt of this letter.

The information requested by this letter is within the scope of the overall burden estimated in GL 92-01, Revision 1, " Reactor Vessel Structural Integrity, 10 CFR 50.54(f)." The estimated average number of burden hours is 200 person hours for each addressee's response.

This estimate pertains only to the identified response-related matters and does not include the time required to implement actions required by the regulations.

l 9307260178 930708 i

I PDR ADOCK 05000334 P

PDR l' \\

7

.q July 8, 1993

.Mr.'J. D. Seiber ;

This action is covered by the:0ffice of Management and Budget Clearance Number 3150-0011, which expires June 30, 1994.

ORIGINAL SIGNED BY:

Gordon E. Edison, Senior Project Manager.

Project Directorate I-3 Division of Reactor Projects I/II Office of Nuclear Reactor Regulation-Enclosure Request for Additional Inforration cc w/ enclosure:

See next page DISTRIBUTION:

{

Docket File NRC & Local PDRs PDI-3 Reading SVarga JCalvo WButler Slittle GEdison OGC ACRS (10)

JLinville,RI DMcDonald JStrosnider BElliot p

PM:PDI-3['

D:PDI-3 k

0FFICE LA:PDI-3 SSItili GEdison:mw WButler 9 /8/93 7 /e//93 i/b/93

//

//

OFFICIAL RECORD COPY

/

0 flLENAME: A:\\BVlM8343.RAI l

I

\\

.l Mr. J. D. Sieber Beaver Valley Power Station Duquesne Light Company Units l & 2 H

1 l

cc:

Jay E. Silberg, Esquire Bureau of Radiation Protection Shaw, Pittman, Potts & Trowbridge Pennsylvania Department of 2300 N Street, NW.

Environmental Resources Washington, DC 20037 ATTN:

R. Barkanic Post Office Box 2063 Nelson Tonet, Manager Harrisburg, Pennsylvania 17120 Nuclear Safety Duquesne Light Company Mayor of the Borrough of Post Office Box 4 Shippingport i

Shippingport, Pennsylvania 15077 Post Office Box 3 1

Shippingport, Pennsylvania 15077 Commiseioner Roy M. Smith West Virginia Department of Labor Regional Administrator, Region I Building 3, Room 319 U.S. Nuclear Regulatory Commission Capitol Complex 475 Allendale Road 4

Charleston, West Virginia 25305 King of Prussia, Pennsylvania 19406 John D. Borrows Resident Inspector Director, Utilities Department U.S. Nuclear Regulatory Commission Public utilities Commission Post Office Box 181 180 East Broad Street Shippingport, Pennsylvania 1;T,7 j

Columbus, Ohio 43266-0573-George S. Thomas Director, Pennsylvania Emergency Vice President, Nuclear Services Management Agency Nuclear Power Division i

Post Office Box 3321 Duquesne Light Company l

Harrisburg, Pennsylvania 17105-3321 Post Office Box 4 Shippingport, Pennsylvania 15077 Ohio EPA-DERR ATTN:

Zack A. Clayton Post Office Box 1049 Columbus, Ohio 43266-0149 l

i i

L-4 Enclosure REQUEST FOR ADDITIONAL INFORMATION RELATED TO GENERIC LETTER 92-01, REVISION 1 For ease of referencing, each question is related to the corresponding question in GL 92-01.

Question 2a in GL 92-01 The response to GL 92-01 indicates that the initial upper-shelf energy (USE) values for circumferential weld 11-714 and lower shell axial welds20-714, are not known.

Either provide the Charpy USE for each beltline weld or provide the Charpy USE and analysis from welds that were fabricated using the same vendor, fabrication time frame, fabrication process, and mater:4i specification to demonstrate that all beltline welds will meet the USE requirements of Appendix G, 10 CFR Part 50.

If this cannot be provided, then submit an analysis which demonstrates that lower values of upper-shelf energy will provide margins of safety against fracture equivalent to those required by Appendix G of the ASME Code.

Question 2b in GL 92-01 The response reports two sets of chemical compositions for axial welds20-714 A&B (Table 8 and 14), three sets of chemical compositions for axial welds19-714 A&B (Table 6,11, and 14), and two sets of chemical compositions for the circumferential weld 11-714 (Table 7 and 9).

Specify and provide justification for the selection of the chemical compositions, which will be used in future ART,3 and AUSE calculations, for these welds.

't

,,