ML20090A958

Final Part 21 & Deficiency Rept Re Shop Welding Defects on Seismic Class 1 Cable Tray,Conduit & HVAC Hangers.Initially Reported on 820802.All Peden Steel Matl Inspected Prior to Shipment

ML20090A958
Person / Time
Site:	Harris
Issue date:	06/27/1984
From:	Parsons R CAROLINA POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
CON-NRC-234, REF-PT21-84-310-000 77, PT21-84-310, PT21-84-310-000, NUDOCS 8407120205
Download: ML20090A958 (4)

Text

.

Of ICIOd. COPY a- . _ _ _ _ _ _ _ .-_. .

1 b Chr'olina Power & Light Company h e .x, . : : , .=v u. w=v-a: wym P. O. Box 101, New Hill, N. C. 27562 June 27, 1984 Mr. James P. O'Reilly NRC-234 United States Nuclear Regulatory Commission Region II 101 Marietta Street, Northwest (Suite 2900)

Atlanta, Georgia 30323 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 the final report on the subject item which was deemed reportable per the provisions of 10CFR50.55(e) and 10CFR, Part 21, on August 2, 1982. With this report, Carolina Power & Light Company considers this matter closed.

If you have any questions regarding this matter, please do.not hesitate to contact me.

Very truly yours, 99;? W R. M. Parsons Project General Manager Shearon Harris Nuclear Power Plant RMP/j am Attachment cc: Messrs. G. Maxwell /R. Prevatte (NRC-SHNPP)

Mr. R. C. DeYoung (NRC) 4 040712O205 040627 COVq DR ADOCK 05000 (C&f

~..

CAROLINA POWER & LIGHT COMPANY SHEARON HARRIS NUCLEAR POWER PLANT UNIT NO, 1 '-

FINAL REPORT SHOP WELDING DEFICIENCIES IN SEISMIC CLASS I  ;

CABLE TRAY, CONDUIT, AND HVAC HANGERS ITEM 77 r

JUNE 27, 1984 f

f I

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

i l '

SUBJECT:

Shearon Harris Nuclear Power Plant Units No. 1 and 2, 10CFR50.55(e) and 10CrR Part 21, Reportable Deficiency. Shop welding deficiencies 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. '

L SUPPLIED BY: Peden Steel Company, Raleigh, NC.

NATURE OF ,

DEFICIENCY: Shop welds on cable tray, conduit, and HVAC hangers do not meet AWS D1.1 code requirements. Undersize I welds, overlap, porosity are examples of the types of l deficiencies.

5 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 was completed in the containment, reactor -

auxiliary, and reactor auxiliary - common buildings, as well as in the warehouse laydown yards.

SAFETY IMPLICATIONS: Cable tray, conduit, and HVAC duct are supported by these hangers. Hangers 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.

The reinspections performed did not reveal any problems this severe.

I

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

CORRECTIVE ACTION: Since May 14, 1982, all material fabricated by Peden Steel on A/E purchase orders has received 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 has been completed. All hangers have been four.d to be acceptable "as-is" or have been repaired and accepted. Those hangers with welds which were not fully accessible for a complete inspection were also reported to Engineering on Permanent Waivers (PWs) and were evaluated for acceptability. This evaluation was based on individual analysis of inaccessible welds using capacity reduction factors. These factors were based on statistical data on accessible welds which were inspected.

_______..m_ ____-m.-_._m___. -__