ML20086U522

Fourth Interim Part 21 Rept,Item 77 Re Seismic Class I Cable Tray,Conduit & HVAC Hangers Supplied by Peden Steel. Initially Reported on 820802.Component Reinsp in Progress. Next Rept by 840701

ML20086U522
Person / Time
Site:	Harris
Issue date:	02/24/1984
From:	Parsons R CAROLINA POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
CON-NRC-186, REF-PT21-84-181-000 77, PT21-84-181, PT21-84-181-000, NUDOCS 8403070290
Download: ML20086U522 (4)

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Cp&L., . . , , . .

Carolina Power & Light Company

/k $ E7 m M TE R N 42 T E 2J P. O. Box 101', h Hill, N. C. 27562 February 24,1984 Mr. James P. O'Reilly N RC-186 United States Nuclear Regulatory Commission Region II 101 Marietta Street, Northwest (Suite 2900)

Atlanta, Georgia 30303 CAROLINA POWER & LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT 1986 - 900,000 KW - UNIT 1 SHOP WELDING DEFICIENCIES ON SEISMIC CLASS I CABLE TRAY, CONDUIT, AND HVAC HANGERS, ITEM 77

Dear Mr. O'Reilly:

Attached is our fourth interim report on the subject item which was deemed reportable per 10CFR50.55(e) and 10CFR, Part 21, on August 2,1982. CP&L is pursuing this matter, and it is currently projected that corrective action and submission of the final report will be accomplished by July 1,1984.

Thank you for your consideration in this matter.

Yours very truly, 97/

R. M. Parsons Project General Manager Shearon Harris Nuclear Power Plant RMP/sh Attachment i

ec: Messrs. G. Maxwell /R. Prevatte (NRC-SHNPP)

Mr. R. C. DeYoung (NRC) o o 40 4 IN T7COfp1

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. CAROLINA POWER & LIGHT COMPANY ,

SHEARON HARRIS NUCLEAR POWER PLANT UNIT NO.1 INTERIM REPORT NO. 4 SIIOP WELDING DEFICIENCIES IN SEISMIC CLASS I CABLE TRAY, CONDUIT AND HVAC IIANGERS 4

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! ITEM 77 1

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FEBRUARY 22,1984 3

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l REPORTABLE UNDER 10CFR50.55(e) AND 10CFR, PART 21 l

SUBJECT:

Shearon IIarris Nuclear Power Plant / Units No. I and 2,10CFR50.55(e) and 10CFR, Part 21, Reportable Deficiency. Shop welding deficiencies in Seismic Class I cable tray, conduit and IIVAC hangers.

ITEM: Shop welding on cable tray, conduit and IIVAC hangers is not in accordance with Codes and Standards to which they were procured.

SUPPLIED BY: Peden Steel Company, Raleigh, N. C.

NATURE OF DEFICIENCY: Shop welds on cable tray, conduit, and IIVAC hangers do not meet AWS Dl.1 code requirements. Undersize welds, overlap, j porosity are examples of the types of deficiencies.

DATE PROBLEM WAS CONFIRMED TO EXIST: March 19,1982 DATE PROBLEM REPORTED: On April 2,1982, Mr. L. E. Jones notified the NRC, Region II(Mr. C. Julian), that the item was potentially reportable. On August 2,1982, Mr. L. E. Jones notified the NRC, Region II (Mr.

A. Hardin), that this item was reportable per the provisions of 10CFR50.55(e).

SCOPE OF PROBLEM: A large number of cable tray, conduit and IIVAC hangers have been installed and accepted by QA/QC personnel. Cable tray, HVAC duct and conduit have been installed in the hangers.

Inspection of shop welds is in progress in the containment, reactor auxiliary and reactor auxiliary - common buildings as well as in the warehouse laydown yards. Deficiencies are being found a .1 repaired.

SAFETY IMPLICATIONS: Cable tray, conduit, and IIVAC duct are supported by these hangers. IIangers having unacceptable welding could possibly fail in normal operation or during a seismic event. This in turn could lead to the failure of the items the hangers were supporting. To date, the reinspection hns not revealed any problems this severe.

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j REASON DEFICIENCY IS REPORTABLE: Reportable due to the Quality Assurance Program breakdowns at Peden Steel Company and during Ebasco Vendor Q A surveillance activities.

CORRECTIVE ACTION: Since May 14,1982, all material fabricated by Peden Steel on A/E purchase orders has been receiving a 100 percent primary welding inspection by CP&L Welding QC personnel prior to ship nent. A complete reinspection of all cable tray, conduit and HVAC hangers furnished I by Peden Steel is in progress. The total number of hangers concerned is approximately 5,200. To date, all but 671 have been found to be acceptable "as-is" or have been repaired and accepted. Of the remaining 671,664 have portions with wolds which are inaccessible for inspection. These 664 hangers have been reported to Engineering on Permanent Waivers (PW's) and approximately 400 of the 664 have been accepted based on engineering evaluation.

Engineering is continuing to evaluate the remaining 264 frames. Seven remain to be located.

FINAL REPORT: A final report will be issued when the evaluations, reinspections and subsequent rework have been completed. The date currently projected for submittal of the final report is July 1,1984.

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