ML20099H652

Applicant Exhibit A-125,consisting of Forwarding Attachment I to Supplementary Response to App a of Insp Repts 50-352/80-21 & 50-353/80-19.Formal Instructions Re ASME Weld Joint fit-up Insp Issued

ML20099H652
Person / Time
Site:	Limerick
Issue date:	05/07/1984
From:	Kemper J PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Girer B, Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
OL-A-125, NUDOCS 8411280239
Download: ML20099H652 (5)

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CC:'.MONifEAL210F PE.T;SYLVANIA  : '

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COU.NTI OF Pl!ILADELPHIA  :

JCHN S. KEMPER, being first duly sworn, deposes and says:

That he. is Vice President of Philadelphia Electric Co=pany, the holder of Construction Permits CPPR-106 and CPPR-107 for Li=erick Generating Station Units 1 and~2; that he has read the foregoing Supple =entary Response to Inspection Report No. 50-352/80-21 and 50-353/S0-19 and knows the contents thereof; and that the statements and : natters set forth therein are true and correct to the best of his knowledge, information and belief.

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ATTACF. MENT I

• SL'PPLEMENTA2Y ?.ES?ONSI TO A?PENDIX-A s

e 4 In addition. colour initial response, we sub=1: the.following.

The crite'ria that have been.used by the Lead Level II Welding Quality Control Engineer for establishing ASME veld joint fit-up inspecti'on and

, surveillance are:

1. ..All ASME Class 1, 2, and 3 closure. spools shall be inspected for fit-up.

2 '. All-NSSS ASME Class I pipe-and valves shall be inspected for f i :- u p '.

3. All contain=en: flued head pene: rations shall be inspected for fit-up.

4. Including the above, a minimu= of 10% of the ASME p'ipe veld fit-up are designated for-inspec: ion.

'. 1 5. The other pipe veld fit-ups are designa:ed for surveillance.

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Surveillance is conducted on'approximately 10% of welding activities including fi:-ups.

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6. The. percentage of ASME pipe veld fi:-up inspections shall be increased based on feedback from In-Process Rework Notices or Nonconformance Reports described herein.

The foregoing have been issued as-formal instructions' for use by-the Lead Level II. Welding Quality Control Engineer.

t In order to obtain documented feedback In-Process Rework No: ices are being' issued whenever a Quality Control engineer identifies fit-up =isalignmen:

p ;or improper gap. Each In-Process Rework Notice of Nonconfor=ance Report r is reviewed:by the Lead Level II Welding Quality Control Engineer. If during

-the course of any day, a. total of two (2) or more In-process Rework Notices or Nonconfor=ance Reports relating to unacceptable, conditions are identified.

at fit-up. the designated inspec: ions shall- increase from a.10" to a =ini=u=

j oof 20%.* Inspec: ions shall continue at that rate until the day no In-? oce,ss Rework Notices on unacceptable conditions identified at' fit-up are issued at which time the inspection rate shall return.co 10~. This is a new re-quirement =ade effective on June 14, 1981.

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50-352/80-21 50-353/S0-19

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. Surveillances are perfor=ed on ASME welding activi:ies. including pipe tid fit-ups, purge gas, pre hea: and in:erpass te=pera:ures. These

.c:ivities provide an addi:1onal degree of assurance cha: an acceptab'e .

co=pleted veld will be ob:ained vi:h a consequen: reduction in veld rejects.

The deter =ina: ion of when-or where surveillances vill be perforned, and the nature of.these surveillances is =ade by considera:ica of a nu=ber cf factors including but not li=ited to the following:

1) Supervision shifting the pipeft:ter crews.

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2) Special Weld Procedures

3) Increased Rejection. Rate: when rejec:s increase, changes in surveillance shall consider:

a) If the increased rej ec: ion ra:e is fro: one area only.

b) If the increased rejection race is for one fit-up configura:1on (i.e., backing ring).

c) If the increased rejection rate includes all types of fit-ups.

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- Since this weld inspection progrs= vas instituted in June 1979, our records 1

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ndicate a' substantial reduction in reject races. The radiographic rejec:

' a:e for 1973 through June.1, 1979 was 17.6% of welds and 1.95 lineal

' inches, respectively. However, the reject rate fro: June'1979 through May 1981 was 8.2% for welds and .67% for lineal inches. .

I-2/2 50-352/80-21 50-253/30-19

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