ML20080B282

Part 21 Rept Re Weld Defect in Piping Subassemblies Mfg by Southwest Fabricating.Initially Reported on 830624. Investigation Continuing

ML20080B282
Person / Time
Site:	Clinton
Issue date:	07/29/1983
From:	Hall D ILLINOIS POWER CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
REF-PT21-83-943-000 10CFR-50.55E, PT21-83-943, PT21-83-943-000, U-10076, NUDOCS 8308050396
Download: ML20080B282 (2)

Text

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/LLIN018 POWER COMPANY U-10076 CLINTON POWER STATION. P.O. BOX 678. CLINTON. ILLINOIS 61727 July 29, 1983 Docket No. 50-461 Mr. James G. Keppler Regional Administrator Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 ,,gg

Subject:

10CFR Part 21 Defect in Piping Subassemblies Supplied to Clinton Power Station

Dear Mr. Keppler:

In Illinois Power letter to Mr. Frank Jablonski, NRC Region III (Ref: U-10024, 1606-L, dated January 17, 1983), Illinois Power agreed to notify Region III of those 10CFR Part 21 defects that affect Clinton Power Station that were previously reported to the.Cammission by vendors or contractors. In accordance with that agreement, the following information is submitted:

On June 24, 1983, Mr. N. J. Moerke, Vice President -

Engineering, Southwest Fabricating & Welding Co. , Inc. , informed the NRC, Region IV, of an indeterminate quality of welds in four (4) piping spools supplied to Clinton Power Station. The report to the Commission stated that Southwest Fabricating apparently failed to comply with the ASME Code,Section III, Paragraph NC-4424, that requires the weld surface. irregularities to be removed prior to performing radiography of the welds. As a result, weld defects may be masked by weld surface irregular-ities.

Illinois Power Company is investigating this issue as part of a potential 10CFR50.55(e) deficiency (55-83-07) reported to the NRC, Region III on June 14, 1983 and will ensure that corrective action will be taken to resolve the problem.

S' erel yours, I

. P. Ha 1 Vice President 6 i tb {

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AUG 011983 8308050396 830729 PDR ADOCK 05000461 s PDR

e Mr. James G. Keppler Page'2 July 29, 1983 Attachment cc: H. H. Livermore, NRC Resident. Inspector Illinois Department of Nuclear Safety-Manager , Quality Assurance ,

Director of Inspection and Enforcement (3 copies)

INPO Records Center CPS Central File 1

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June 24, 1983 Director, Office of Inspection & Enforcemnt U S Nuclear Pogulatory Comrssion, Region IV 611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76011 Attention: Mr. Uldis Potapovs, Chief Vendor Inspection Branch

Reference:

10 CFR Part 21 - Reporting of Defects & Noncompliance Illinois Power Conpany Clinton Station, Unit #1

- Constructor: Baldwin Associates Engineer: Sargent & Lundy

Subject:

Weld Surface Irregularities that my busk Defects Centlemn:

During the telephone conversation with Mr. I. Barnes, Region IV RSCPS cn June 22, 1983 at 10:15 AM, I presented the initial notification of the SF&?CO apparent failure to comply with the requiremnts of ASFE III Paragraph 10-4424, prior to radiography. This apparent failure was reported to me on June 20, 1983 by Mr. R. P. Bornes, SF&WCD bbnager of Quality Assurance.

'Ihe branch connections, as described below, were 45 laterals with reinforcing pads. Radiography was performd prior to installing the reinforcing pads. Our stated position relative to this deviation is:

Weld quality is currently indeterminate due to surfacx2 irregularities that Iray mask defects.

During the discussion, Mr. I. Barnes had specific questions regarding the RT technique that was employed by Southwest on these items and recorded on the Reader Sheets prior to shipm2nt of the items, and also viewd at the Clinton, IL jobsite. Therefore, Mr. Bornes, QA bbnager and ASB.'r I22 vel III, who viewed the radiographic film and verified the radiographic film deficiencies at the jcbsite on June 16 and 17, 1983 recorted his observations in detail to Mr. I. Barnes. Our Mr. Bornes discussed the individual characteristics of the film with Mr. I. Barnes.

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l Nuclear Regulatory Comnission June 24, 1983 Page Two It was pointed out that the radiographic filns undergoing the review at this late date, were accepted by the Baldwin Associates QA repro-sentative and the Hartford Authorized Nuclear Inspector, wtlo signed the Manufacturers Data Peport after the subject radiographic film was released by Southwest, prior to code starping the items NPT C1. 2.

It should be recognized that radiographs of branch connections taken before the reinforcement pad was installed were evaluated and accepted by our personnel and the ANI with many surface irregularities shown on film. At that tine, the weld was accessible for visual examination, the joint configuration and the welding processes were available, and this information was used in the evaluation process. Obviously, all of this information, including the weld surfaces, is no longer access-ible and makes it inpossible to assure that indications shown on the film arc- surface inperfections.

In accordance with thd 'requirenents of Paragraph 21.21(3), we are tabulating the detailed sunmary of the information pertinent to this notification:

Para. 21.21(3) (i)

Personnel notifying the Comnission:

N. H. Moerke, Viw President-Engineering R. P. Bornes, Quality Assurance Manager Southwest Fabricating & Welding Co. , Inc.

P. O. Box 9449 Houston, TX 77261 Para. 21.21(3) (ii)

Identification of the facility:

Owner: Illinois Power Ccapany 500 South 27th Street i

Decatur, IL 62521 Clinton Power Station, Unit #1 Clinton, IL Itens: Piping Subasserblies with 45* angular branch ,

. connection laterals with reinforcing pads installed after radiography; Class 2 NPT.

SF&W S. O. 4301 - Piping Subassenblies.

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CS Nuclear Regulatory Comission June 24, 1983 Page Three Constructor: Baldain Associates 1211 E. Tower Road Shatsrburg, IL 60196' Baldain Assoc. P. O. tb. 4457

! Para. 21.21(iii)

Identification of the fim supplying the items which fail to co:rply:

Southwest Fabricating & Welding Co., Inc.

7525 Shennan Street Houston, Texas 77012 Para. 21.21(iv) .. -

Nature of the failure to cc:tply:

I Weld quality indeterminate due to surface irregularities that tray trask defects. IteIrs shipped on Baldwin Assoc.

P. O. 4457 dated 9/26/74 covering piping subasse:rblies furnished in accordance with ASME Section III 1974 Ed.,

! Sumer 1974 Addenda Subparagraph 4424(c), Surface of Welds.

'1he following listed piping subasse:rblies contain welded angular branch connections with pad reinforcermnt where the ' auld quality is indeterminate, as reviewed and noted below, due to surface j

irregularities that may mask defects:

Sizes Pc t& Iso S. O. Sht. 45* Branch Shipoed 1-DG-1-5 DG-1 Q4301-DG 4 20" x 36" 12/24/80 1-DG-2-5 DG-2 Q4301-DG 12 20" x 36" 1/21/81 1-DG-3-1 DG-3 Q4301-DG 17 24" x 36" 12/24/80

, 1-DG-4-2 DG-4 Q4301-DG 22 24" x 36" 12/24/80 Piece .Nhrk tbs.1-DG-2-5 and 1-DG-4-2 radiographs were reviewed at the Clinton jobsite by Mr. R. P. Bornes during the period

, June 16 and 17, 1983, and the film exhibited the effects of the '

. above-noted surface irregularities that my mask defects. Piece Mark Bbs.1-DG-1-5 and 1-DG-3-1 have not been reviewed. The radiographic film for these pieces will be reviewed during Mr.

R. P. Bornes' next visit to the jobsite, tentatively scheduled for the first week of July 1983 by Baldain Assoc. QA personnel.

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US Nuclear Pegulatory Conn 1ission June 24, 1983 Page Four Para. 21.21(v)

'Ihe date on which the infcnnation of failure to conply was obtained:

June 20, 1983 Para. 21.21(vi)

Other piping subassemblics that incorporate reinforced welded branch connections requiring radiography and ?PT Class 2 code startping, to be' subjected to review and evaluation of the radiographic records:

Conronwealth Edison Conpany - P. O. 194350 dated 3/8/76 Byron Station ..

Byron, IL and Conmom;ealth Editon Conpany - P. O. 194351 dated 3/8/76 Braidwood Station Braidmod, IL Pc 52 Iso Sales Order Sht. Shipped 55-15-7 MS-15 06047-5E 6 5/24/79 BE-16-7 FE-16 14 6/29/79 55-17-7 BE-17 22 5/24/79 FE-18-7 FE-18 30 6/7/79 SE-56-1 BE-56 06049->E 1 3/24/81 bE-57-7 FE-57 18 3/12/81 60-7 FE-60 30 3/31/81

. LE-61-7 FE-61 42 3/31/81

! LE-15-7 MS-15 06055-53 6 6/15/79

! SE-16-7 FE-16 14 6/8/79

! SE-17-7 55-17 22 1/30/81 tE-18-7 MS-18 30 1/30/81

E-56-1 FE-56 06057-55 1 9/23/81 53-57-6 FS-57 18 10/23/81 35-60-7 bE-60 30 6/26/81 i SE-61-7 MS-61 42 11/13/81 SI-43-2 SI-43 06048-51 110 8/10/79 I SI-43-4 SI-43 112 8/10/79 -

SI-37-1 SI-37 06050-SI 70 9/25/81 SI-37-5 SI-37 72 8/24/82

SI-43-2 SI-43 06056-SI 138 11/30/79

. SI-43-2 SI-43 140 8/29/80 SI-37-1 SI-37 06058-SI 70 8/7/81 SI-37-3 SI-37 "

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US Nuclear Pegulatory Cornnission June 24, 1983 Page Five Para. 21.21(3) (vii)

The corrective action which has been, is being, or will be taken and the length of tine to conplete the action:

Indeterminate at this tine and until the investigation has been conpleted and further action finalized with the jobsite managenent.

Para. 21.21(3) (viii)

Advice related to the failure to conply will be provided to the purchaser and licensee by telephone connunication and copies of this letter to:

Illinois Power Conpany and Baldwin Associates at Clinton Power Station Clinton, IL Please contact us if further clarification is required of the infornntion furnished.

Yours very truly, N. H. : berke, P.E. R. P. Bornes Vio2 President-Engineering Quality Assurance bbnager ASNT Invel III NIC4:dc cc:pIllinois Pcwer Conpany

/ Attn: R. E. Ca:rpbell, IP Dir-OS&A 500 South 27th St.

Decatur, IL 62521 Baldwin Associates Attn: J. E. Finley, Mgr.-Q&TS P. O. Fox 306 Clinten, IL 61727 Connonwealth Edison Conpany Attn: J. T. Westerneier P. O. Box 767 Chicaao, IL 60690 SF&WCO: B. J. Good. vin /T. F. Ich: nann /A. W. Angelo/E. R. McAnally S. M. Good. vin

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