ML20080N697

Third Interim Deficiency Rept 77 Re Shop Welding Defects in Seismic Class I Cable Tray,Conduit & HVAC Hangers.Initially Reported on 820802.Final Rept Expected by 840301.Also Reportable Per 10CFR21

ML20080N697
Person / Time
Site:	Harris
Issue date:	09/29/1983
From:	Parsons R CAROLINA POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
CON-NRC-125, REF-PT21-83 10CFR-050.55E, 10CFR-50.55E, 77, CEFR-830929, NUDOCS 8310060036
Download: ML20080N697 (4)

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33 00 P. O. Box 101, New Hill, N. C. 27562 September 29,1983 Mr. James P. O'Reilly NRC-125 United States Nuclear Regulatory Commission Region II 101 Marietta Street, Northwest (Su.te 2900) i Atlanta, Georgia 30303 CAROLINA POWER & LIGHT COMPANY SHEARON HARRE NUCLEAR POWER PLANT 1986 900,000 KW - UNITS 1 & 2 SHOP WELDING DEFICIENCIES ON SEISMIC CLASS I CABLE TRAY, CONDUIT, AND HVAC HANGERS, ITEM 77

Dear Mr. O'Reilly:

Attached is our third 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 March 1,1984.

Thank you for your consideration in this matter.

Yours very truly,

,S R. M. Parsons Project General Manager Shearon Harris Nuclear Power Plant RMP/sh Attachment ec: Messrs. G. Maxwell /R. Prevatte (NRC-SHNPP)

Mr. R. C. DeYoung (NRC) o-

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, f CAROLINA POWER & LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT UNITS NO.1 & 2 INTERIM REPORT NO. 3 SHOP WELDING DEFICIENCIES IN SEISMIC CLASS I CABLE TRAY, CONDUIT AND HVAC HANGERS ITEM 77 SEPTEMBER 29,1983 l -

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

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SUBJECT:

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

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

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

NATURE OF DEFICIENCY: Shop welds on cable tray, conduit, and HVAC hangers do not meet AWS Dl.1 code requirements. Undersize welds, overlap, 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 HVAC 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 and repaired.

SAFETY IMPLICATIONS: Cable tray, conduit, and HVAC duct are supported by these hangers. Hangers having unacceptable welding could possibly fall 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 has not revealed any problems this severe.

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

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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 shipment. A complete reinspection of all cable tray, conduit and HVAC hangers furnished by Peden Steel is in progress. The total number of hangers concerned is approximately 5,200. To date, approximately 4,200 have been accepted based on reinspection or reinspection and repair. Of the remainder, approximately 550 which have been installed have been inspected but have some welds which are inaccessible for reinspection.

These welds are being evaluated by Engineering for acceptance. Approximately 200 are smallitems such as WT sections without distinct piece numbers which will require inspection and/or evaluation depending on whether they can be located. The remaining 250-300 are being located, and inspected and repaired as necessary.

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 March 1,1984.