ML20086N238

Supplemental Part 21 Rept Re Radiographic Record Evaluation, Supplying Addl Data to 830624 Submittal.Records Show That 90 Degree Branch Connections Furnished to North Anna 1 & 2 Jobsites.No Nozzles Supplied to Zimmer.Related Info Encl

ML20086N238
Person / Time
Site:	Byron, Braidwood, North Anna, Clinton, 05000000, Zimmer
Issue date:	10/04/1983
From:	Bornes R SOUTHWEST FABRICATING & WELDING CO. (SUBS. OF IU
To:	Potapovs U NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
REF-PT21-83-111-000 PT21-83-111, PT21-83-111-000, NUDOCS 8402170317
Download: ML20086N238 (6)

Text

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SOUTHWEST FABRICATING

& WELDING CO., INC.

October 4, 1983

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( OCT 61983 Director, Office of Inspection & Enforcerrent Jl U. S. Nuclear Pegulatory Ccramission Region IV J 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 Attention: Mr. Uldis Potapovs, Chief Vendor inspection Branch Pcference: 10 CFR Part 21 - Reporting of Defects & Nonccmpliance Illinois Power Co. Clinton Station, Unit #1 - y g ', . d SF&WCD Letter dated June 24, 1983 SF&WOD Ictter dated August 17, 1983

Subject:

Interim Peport - Potential Nonarnpliance Presented in Referenced Documents Gentlemen:

The following information supplements previous submittals and gives the current status of our continued investigation.

Southwest Fabricating & Welding Co. has reviewed all contracts listed in our Nuclear Iog Book to determine where Class 2 nozzles were furnished that required radiography and reinforcing pads.

In addition to those previously reported at the Clinton, Byron and Braidwood sites, our records show that 900 Branch Connections in this category have been furnished to the North Anna 1 and 2 jobsites.

Itms supplied to North Anna were under Stone & Webster Engineering Corporation P. O. NA-64 and NA-1064 for North Anna Unit #1 and #2, respectively. Mr. G. A. Helm, Manager of Quality Assurance for the Virginia Electric Power Co., was notified on Septaber 30, 1983 and asked to review radiographs of the subject welds (see Attachment "A") .

North Anna Units #1 and #2 were fabricated in accordance with USAS R31.7, 1969 Edition.

Our review of the Cincinnati Gas and Electric contract for the Zinmer pmject, revealed that no nozzles in this cateoory were furnished.

However, four of our shop detail sheets for this contract are missing.

Eight pipe sgols were fabricated frcm these shop detail sheets.

\

7525 Sherman Street P.O. Box 9449 Houston, Texas 77261-9449 (713) 928-3451 4f 9 TWX: 910 881-1600 8402170317 831004 PDR ADOCK 05000338 8 PDR

SOUTHWEST FABRICATING

- 4 WELOING CO, INC. -

Nuclear Regulatory Cmmission October 4, 1983 Page Two Mr. John Wald, Director of Operations QA for Cincinnati Gas and Elec-tric Co., was notificd on September 30, 1983 and asked to review drawings for these pieces and report results to Southwest Fabricating

& Welding 03. (see Attachment "B") . This unit was fabricated in accordance with ASBE Section III,1971 Edition.

The review of radiographs at the Byron and Braidwood sites is now canplete. Mr. Paul Donovan of Canmonwealth Edison CaTpany inforned the writer on September 29, 1983 that all suspect welds (88) had been reviewed and accepted as meeting code requirements. Mr. Donovan stated that Camenwealth Edison will subnit a letter to the Nuclear Regulatory Caumission Region III stating that they have no reason to submit a 50.55(e) report or take any further actia on this matter.

Based on a Telcon with Mr. Mike Pacy of Illinois Power Company on October 3,1983, they are continuing the investigaticn at the Clinton jobsite. Illinois Power Canpany has engaged the services of Mr.

01uck Hellier to perfonn the investigation. Southwest Fabricating will keep you psted as this investigation progresses and results are made known.

Please contact the writer if additional information is required at this time.

Yours very truly, Ibbert P. Bornes Manager of Quality Assurance RPB:dc encls.

cc: Camonwealth Edison Omipany Attn: Mr. J. T. Westermeier P. O. Bcx 767 Chicago, IL 60690 Illinois Power Comparry Attn: R. E. Campbell, IP Dir-OS&A 500 South 27th Street Decatur, IL 62521 Baldwin Associates Attn: J. E. Finley, R r-Q&TS J

P. O. Box 306 Clinton, IL 61727

. ,3 Attadiment "A"

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SOUTHWEST FABRICATING

& WELDING CO., INC.

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Septerber 29, 1983

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Virginia Electric 'ower P Co. .

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Electric Bldg. >i >

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, P. O. Box 2666 '

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Richmond, VA 23261

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'n ' iM8W: JO.M %-F Attention: Mr. G. A. Helm *

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M Mif Manager of Quality Assurance , <:i.. ,,i$,, 1Bdh

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Reference:

P.O. NA-64 & NA-1064 ,3 S.O. 0281 & Q0283 * '

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i Gentlemen: ', "

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d5 .. d During a recent' review of radiographs taken on nuclear piping welds. *

.s. :i V * .

m de by Southwest Fabricating & Welding Co., I detected one incident , d i.f i :n where we possibly had not canplied with ASME III requirenents for i radiography. This circumstance occurred on an ASbE III Class 2 .N. ;p pipe spool furnished in accordance with the 1974 Edition, Su:rmer

1974 Addenda. A nozzle was welded into the header pipe at a 450 angle and the attaching weld was subsequently covered with a rein-forcing pad. No deficiencies have been found in nozzles installed at angles other than 450 '

Code requires, in this circumstance, that the nozzle to header

- attachment weld be radiographed prior to installing the reinforcing pad. Radicgraphs of the weld that caused initial concern indicated that the weld surface had not been suitably conditioned prior to radiography. Surface irregularities existed that could mask defects.

Cbviously, after the reinforcing pad is installed, the condition is '

no longer accessible for visual inspection and, therefore, causes weld quality to be indeterminate as represented on film. bbny welds having the sane configuration have been reviewed and found to be in ccrnpliance with Code requirarents.

Southwest submitted this deficiency to Nuclear Regulatory Camussion Region IV as a potential violation of Code and, in canpliance with 10 CFR Part 21, we have investigated all nuclear contracts to deter-mine the location of all welds installed in this manner and requiring 1 radiography.

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DESIGNATED ORIGINAL I certtn a sy, h & W 7525 Sherman Street P.O. Box 9449 Houston. Texas 77261-9449 . (713) 928-3451 TWX: 910 881-1600

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' ' $OUTHWEST FABRICATING

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Virginia Electric Power Co.

September 29, 1983 Page Two '

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( Research of the subject contract reveals that thirty (30) welds of.. .

this type were furnished to Stone & Webster Engineering Corporation.

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These welds are located on the following spol pieces: -

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-n:n. 7,t:!.4 . ' 'N 9 M..hj.:. b :c . M L, North Anna Unit #1: S/O 0281A - Sht. '.5 -

Pc Mk SHP-1-5 SHP-2-5  ?-[>df CM?% M"I,1' 9 d!,

. ." ~19 .31 . "

SHP-3-8

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ONI f,.:i,@. .M w..W, T.. ,..

North Anna Unit #2: S/O QO283A"

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- Pc Mk SHP-202-1 -

Mi 949.T

. -20 SHP-202-7 '

26 " SHP-202-13 'o

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'Esch of the above spool pieces contains five (5) welds that fall .

into the category of this investigation. .All documentation, includ- ,

ing radiogra;hs,' for these pieces have been transferred to you. ,

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Therefore, Southwest requests that you review the radiographs of -

-i welds joining nozzles to headers to verify compliance. Upon .

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ccupletion of your review, please advise the undersigned in writing ',....,

so that this issue can be closed with the Nuclear Regulatory

• Ccmnission.

We apologize for any inconvenience this may cause and appreciate your p m w attention.

Yours very truly,

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Bocert P. Bornes Quality Assurance Manager

Stri-TC-1A Level III RPB:dc cc: B. J. Goodwin N. H. Moerke 6

as

Attachment "B"

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SOUTHWEST FABRICATING

& WELDING CO., INC.

l September 29, 1983 l

Cincinnati Gas & Electric Co.

W. H. Zimmr Nuclear Power Plant U. S. Highway 52 ,

Moscow, Ohio 45153 Attenticn: Mr. John Wald Director Operations QA

Reference:

Your P. O. 2081 SF&W S. O. Q2252 Gentlemn:

During a recent review of radiographs taken on nuclear piping welds made by Southwest Fabricating & Welding Co. , I detected one incident where we possibly had not ccinplied with ASME III Code requirsents for radiography. 'Ihis circumstance occurred on an ASME III Class 2 pipe spool furnished in accordance with the 1974 Fdition, Sunner 1974 Addenda. A nozzle was welded into the header pipe at a 450 angle and the attaching weld was subsequently covered with a rein-forcing pad. No deficiencies have been found in nozzles installed at angles other than 450 The Code requires, in this circumstance, that the nozzle to header attach: rent weld be radiographed prior to installing the reinforcing pad. Radiographs of the weld that caused initial concern indic 2ted that the weld surface had not been suitably conditioned prior to radiography. Surface irregularities existed that could mask defects.

Obviously, af ter the reinforcing pad is !.nstalled, the condition is no longer accessible for visual inspection and, therefore, causes weld quality to be indeterminate as represented on film. Many welds having the same configuration have been reviewed and found to be in ecrnpliance with Code requirenents.

Southwest subnitted this deficiency to Nuclear Regulatory Ccmnission Region IV as a potential violation of Code and, in compliance with 10 CFR Part 21, we have investigated all nuclear contracts to deter-mine the location of all welds installed in this manner and rcquiring radiography.

7525 Sherman Street P.O. Box 9449 Houston, Texas 7726'-9449 - (713) 928-3451 TWX: 910 881-1600

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, * ' S6UTHWEST c c FABRICATING

- a wtLotNG CO, usC. -

Cincinnati Gas & Electric Co.

Septenber 29, 1983 Page '1%o ,

l Re: Your P. O. 2081 ,

l During our resea?r.h of your project, we found no welds that fall I into the category of this investigation; however, our files are no l longer complete and we are unable to ascertain the status of the ]

following spool pieces: i Our Sales Order 02252 - Sheet 3X Pc Mk 1CY01B16-6 3X 1CY0lB16-7 3X -

1CY01B16-8 7 1CYO1B16-14 7 ACY01B16-15 8 1CY01B16-16 8X 1CY01B16-16A 8X 1CY01B16-17 Please review the drawings of the above pieces at your earliest convenience and determine whether nozzle welds exist that required both radiography and reinforcing pads. It is unlikely that such welds exist, since none were found on the renainder of the drawings.

Please advise the undersigned of the results of your review so that this issue can be closed with the IEC.

We appreciate your prompt attention and apologize for any inconven-ience this may cause.

Yours very truly, Robert P. Bornes

• Quality Assurance Manager SNT 'IC-1A Level III RPB:dc cc: B. J. Goodwin N. H. Moerke 9