ML20062C823

Responds to 780830 NRC Ltr Re Violations Noted in Inspec Rept 50-322/78-12.Corrective Actions:Weld Technique Sheet Issued & slip-on Flange Welds to Be Inspected

ML20062C823
Person / Time
Site:	Shoreham File:Long Island Lighting Company icon.png
Issue date:	10/18/1978
From:	Wofford A LONG ISLAND LIGHTING CO.
To:	Robert Carlson NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20062C822	List: ML20062C818 ML20062C823 ML20062C826 ML20062C831 ML20062C835
References
SNRC-332, NUDOCS 7811140234
Download: ML20062C823 (3)

Text

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l EKCO LONG ISLAND LIGHTING COM PANY j

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l 175 EAST OLD COUNTR Y ROAD

• H f C K S V I L L E, NEW YORK 11801 anoacw w. worro o v.cs .. ..oc '

SNRC-332 I

.j October 18, 1978 1

f Mr. Robert T. Carlson, Chief Reactor Construction & Engineering Support Branch 4

U.S. Nuclear Regulatory Commission, Region I 631 Park Avenue j King of Prussia, Pennsylvania 19406 c:

r- NRC Inspection No. 78-12 Shoreham Nuclear Power Station - Unit No. 1 Docket No. 50-322

Dear Mr. Carlson:

This letter responds to your letter of August 30, 1978, which forwarded the report of the inspection of activities author-i=ed by NRC License No. CPPR-95, conducted by Mr. Toth of your office on August 8-11, 1978. The letter stated that it appeared that certain of our activities were not conducted in full compliance with NRC requirements. The apparent noncompliances and our responses follow:

I. Apparent Nonccmpliance with 10CFR50, Appendix B, Criterion IX, and FSAR Section 17.1.9B

) Contrary to the above references, on August 9, 1978, the i

i single-bevel groove weld joint angles for pipe break restraints FWR1, 2 and 15 were 300 although the AWS Structural Welding Code Dl.1, paragraph 2.9, limits such weld joint angles to 450 minimum.

Corrective Action and Results l

Prior to the inspection, welding on pipe restraints using the 300 bevel was accomplished using technique sheets W70J and W70H, both of which required the use of a bevel angle of 450 minimum if the l .

I techniques were to be considered prequalified by AWS. A review of the l ,

essential variables of these technique sheets has shown that they are

, j adequately supported for use with a 300 bevel angle by Welding Procedure Qualification Tests on file. Accordingly, welds made to these technique sheets are acceptable.

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, L.ONC ISLAND UG>mNG COMPANY E, , l i

Mr. Robert T. Carlson Page 2 i U.S. Nuclear Regulatory Commission Reg. I October 18, 1978 i t

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Steps Taken to Prevent Recurrence I

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1 A qualified weld technique sheet (attached to E&DCR P-3071) has been issued to cover all subsequent welding on pipe restraint  :

-j joints having 300 bevels. Additionally, the requirement that all  !

i; welding meet the provisions of the applicable code has been reemphasized

to all welding contractors. ,

Date Full Compliance Will De Achieved 1].s i

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'! Full compliance has been achieved.

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II. Apparent Noncompliance with 10CFR50, Appendix B, j

, Criterion V, and FSAR Section 17.1.5B

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I Contrary to the above references, on August 9, 1978, the  ;

front weld (inside diameter) size on pipe spool slip-on flange (

1B21-SLP-211-3-1 was less than 1/4 inch, and the back weld (outside l diameter) size on pipe spool slip-on flanges 1B21-SLP-211-3-1 and  !

1B21-SLP-203-3-1 was less than 3/8 inch; although ASME III, para- i graph ND 3661.1, requires these welds to be 1/4 inch and'O.511 inch,  !

respectively. i l

i Corrective Action and Results The results of an initial sampling inspectior. sr fillet welds j

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on slip-on flanges revealed the need to inspect all such welds. -

Accordingly, all accessible slip-on flange welds will be inspected, l

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! and those found deficient will be repaired to meet ASME III require-ments. Engineering will provide further instructions regarding welds

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({} determined.not accessible for inspection when the number of these welds is  !

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3 Steps Taken to Prevent Recurrence I t H The slip-on flange welds were shop-fabricated. Therefore, i this condition has been brought to the attention of Procurement  !

Quality Assurance (PQA). Additionally, the Project QA Manager has  ;

been requested to require that PQA advise the vendor of this condition 5 and assure that the vendor takes proper corrective / preventive action. '

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f . WNo isLANo uannNo COMAANY 5

i Mk.RobertT. Carlson Page 3

} U.S. Nuclear Regulatory Commission Reg. I October 18, 1978 I

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Date Full Compliance Will Be Achieved i

-i Full compliance is expected by February 1, 1979. ,

, Very truly yours, I

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, ,s 1 A . W. Wofford -

4 Vice President C 1

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