ML20087P151

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Reponds to NRC Re Violations Noted in IE Insp Rept 50-412/83-11.Corrective Actions:Unacceptable ASME III Pipe Spools Will Receive Final post-weld Heat Treatment
ML20087P151
Person / Time
Site: Beaver Valley
Issue date: 03/01/1984
From: Woolever E
DUQUESNE LIGHT CO.
To: Starostecki R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20087P145 List:
References
2NRC-4-021, 2NRC-4-21, NUDOCS 8404060102
Download: ML20087P151 (3)


Text

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$VL 2NRC-4-021 (412) 787 - 5141 Telecopy 8 Nucteer Construction Division March 1, 1984 Robinson Plaza. Bunding 2. Suite 210 Pittsburgh, PA 15205 United States Nuclear Regulatory Commission Region I

, 631 Park Avenue '

King of Prussia, PA 19406 ATTENTION: Mr. Richard W. Starostecki Division of Project and Resident Programs

SUBJECT:

Beaver Valley Power Station - Unit No. 2 Docket No. 50-412 USNRC IE Inspection Report No. 50-412/83-11 Supplement Report Gentlemen:

This letter provides additional information relative to our pr eviou s

. response (Reference 3) to the subject inspect ion report.

A document review has been performed for the 35 ASME III pipe spools identified as having postweld heat tr eatment (PWHT) per Power Piping Company heat treatment procedure N-1141-P-8. This review has de t ermined that 29 of the 35 spools were tr eated in acordance with the ASME III Code , Winter 1973 Code Rules of NB-4620, using nominal wall thickness fo r standard pipe sizes and specified minimum thic knes s fo r special sizes. Based on this rev iew Power Piping Company and their ANI are prepared to re-cert ify the NPP-1 Form to indicate compliance with the 1972 Edition /1973 Winter Addenda of the Code for these 29 spools.

The remaining 6 s pools wh ich were not accept ab le , will rece ive a final post-weld heat treatment in the field.

Our letter of October 7,1983 (Reference 3) listed MSS-043-3 as one of four spools ident ified by Nonconformance and Dis po s it ion Repo rt (N&D) No.

6841. N&D No . 6841 ident ified MSS-043-5 as an item of pot ent ial viola t ion rather than MSS-043-3.

A temperature uniformity survey has been performed on Power Piping 's heat treatment furnace in ac cordance with the commitment in our let ter of October 7, 1983. The results of this survey indicate that the thermocouples, as ins t al led during the tre atment proces s , could adequa t ely repres ent the temperature of the' components in the furnace.

8404060102 840330 PDR ADOCK 05000412 G PDR E _

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Mr. Richard W. Starostecki

Page 2 The remaining - concerns of your letter of January 4, 1984, and the remaining commitment s of our letter of October 7, 1983 are the subject of ongoing detailed inves t igat ion. Duquesne Light Company will issue a fur ther report by April 10, 1984.

DUQUESNE LIGHT COMPANY'

.Nesk e, .

By 00 . . U # ^ ^"

E. J . Woolever Vice President RW/wjs

- cc: NRC Document Control Desk Mr. G. . Walton, NRC Res ident Ins pect o r Ms. L. Lazo, Project Manager

References:

1) NRC letter Docket No. 50-412, dated September 9, .1983

. 2)- NRC letter Docket No. 50-412, dated January 4,1984

3) Duquesne Light Company letter 2NRC-3-075, dated-October ~7, 1983 i

SUBSCRIBED AN ORN TO BEFORE ME THIS

/.28 DAY OF v4yg/) , 1984

-A Ys b $ w/Y '

Not ary Public ELVA G. LESONDAK, NOTARY PUBLIC RCBINSON TOWNSHIP, ALLEGHENY COUNTY MY COMMISSION EXPlRES OCTOGER 20,1986 5

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,Unitcd Stctso Nuciscr R:gulttory Commission-Dr. Richard W. Starostecki

.Page 3 COMMONWEALTH OF PENNSYLVANIA )

) SS:

COUNTY,OF ALLEGHENY -)

On~this / day of (#M , [ before me, a Notary Public in and for said Commonwealth and County, personally appeared R. J.

- Washabaugh who being duly sworn ' deposed and said that (1)-he is duly authorized to execute and Lfile the foregoing Submittal on behalf of E. J.

Woolever, ' Vice President of Duquesne Light , (2) he is duly authorized to execute and file the - foregoing Submittal on behalf of said Company, and (3)

'the statements set forth in-the Submittal are true and correct to the best of his knowledge.-

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-- [ - . M 4 Notary Public -!

~

' ELVA LG. ' ESONDAK, NOTARY PUBLIC

. ROBINSON TOWNSHIP, ALLEGHENY COU MY COMMISSION EXPlRES OCTOBE h

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