ML17334B639

Forwards Relief Request to Continue Unit 1 Operation with Section of Main Steam Piping Having Wall Thickness Less than That Allowed by Plant Piping Code,Usas/Ansi B31.1.1,1967 Edition,Per 970425 Telcon

ML17334B639
Person / Time
Site:	Cook
Issue date:	06/05/1997
From:	Fitzpatrick E AMERICAN ELECTRIC POWER CO., INC.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
AEP:NRC:1098B, NUDOCS 9706100020
Download: ML17334B639 (2)

Text

CATEGORY 2

.REGUDATOINFORMATION DISTRIBUTION TEN (RIDE)

ACE'ESSION NBR:9706100020 DOC.DATE: 97/06/05 NOTARIZED: NO DOCKET FAC:L;50-315 Donald C. Cook Nuclear Power Plant, Unit 1, Indiana M 05000315 AUTH. NAME AUTHOR AFFILIATION FITZPA;RICK,E. Amer can Electric Power Co., Inc.

REC:P.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

Forwards relief request to continue Unit 1 operation with section of main steam piping having wall thickness less than that allowed by plant piping code,USAS/ANSI B31;1.1,1967 edition,per 970425 telcon.

DISTRIBUTION CODE: A047D COPIES RECEIVED:LTR ENCL SIZE:

TITLE: OR Submittal: Inservice/Testing/Relief from ASME Code GL-89-04 NOTES:

RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD3-3 LA 1 1 PD3-3 PD 1 1 HICKMAN,J 1 R INTERNAL: AEOD/SPD/RAB 1 1 FILE CENTER 01 1 1 NRR/DE/EMEB 1 1 1 1 OGC/HDS2 1 0 RES/DET/EIB 1 1 RES/DET/EMMEB 1 1 EXTERNAL: LITCO ANDERSON 1 1 NOAC 1 1 NRC PDR 1 1 D

N NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE. TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DISTRIBUTION LISTS OR REDUCE THE NUMBER OF COPIES RECEIVED BY YOU OR YOUR ORGANIZATION, CONTACT THE DOCUMENT CONTROL DESK (DCD) ON EXTENSION 415-2083 TOTAL NUMBER OF COPIES REQUIRED: LTTR 13 ENCL 12

indiana Michigan Power Company 500 Circle Drive Buchanan, Ml 491071395 INOlAMA NlCHEGAN PQWJFR June 5, 1997 AEP:NRC:1098B Docket No: 50-315 U. S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555 Gentlemen:

Donald C. Cook Nuclear Plant Unit 1 MAIN STEAM SYSTEM - PIPE WALL THINNING Pursuant to a conversation with members'f your staff on April 25, 1997, this letter forwards our relief request to continue unit 1 operation with a section of main steam piping having a wall

, thickness which is less than that allowed by Cook Nuclear Plant piping code, USAS/ANSI B31.1.1, 1967 edition.

In our letter AEP:NRC:1098A, dated April 17, 1997, we provided information demonstrating the measured thickness of a piping elbow in the main steam system, 0.843 inches, was acceptable when material properties obtained from the certified material test report (CMTR) were used. However, during the April 25th discussion, the use of CMTR data, rather than the data contained in the code itself, was questioned and we agreed to submit a relief request to operate for one cycle.

The attached relief request contains our assessment that continued operation of unit 1 prior to repairing the elbow will not endanger the health and safety of the public.

Sincerely, E. E.

p Fitzpatrick Vice President vlb Attachment A. A. Blind A. B. Beach MDEQ - DW & RPD NRC Resident Inspector J. R. Padgett 9706100020 9'70605 PDR iADOCK i05DP0$ 15