ML18026A450

Submits Core Shroud Insp Scope & Schedule for Unit 1 in Response to Requirements of GL 94-03

ML18026A450
Person / Time
Site:	Susquehanna
Issue date:	12/19/1994
From:	Byram R PENNSYLVANIA POWER & LIGHT CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GL-94-03, GL-94-3, PLA-4233, NUDOCS 9412280279
Download: ML18026A450 (9)

Text

RIG RITY

'ACCELERATED RI DS P ROC ESSIVE 1 G)

REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION'BR:9412280279 DOC.DATE: 94/12/19 NOTARIZED: NO DOCKET N FACIL:50-387 Susquehanna Steam Electric Station, Unit 1, Pennsylva 05000387 50-388 Susquehanna Steam Electric Station, Unit 2, Pennsylva 05000388 AUTH. NAME AUTHOR AFFILIATION BYRAM,R.G. Pennsylvania Power 6 Light Co. P RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

Submits core shroud insp scope 6 schedule for Unit 1 in response to requirements of GL 94-03. I DISTRIBUTION CODE: AOISD COPIES RECEIVED:LTR -I'NCL J SIZE:

TITLE: GL 94-03 Intergranular Stress Corrosion Cracking of Core S rou s zn B NOTES S 05000387 R RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PM/BRINKMAN,D. 1 1 INTERNA E=CENZE 1 1 1 NRR/DE/EMCB 1 1 NRR/DE/EMEB 1 1 NRR/DOPS/OECB 1 1 NRR/DSSA/SRXB 1 1 EXTERNAL: NRC PDR 1 1 NOTES D

0 C

U N

YOTE TO ALL"RIDS" RECIPI EYTS:

PLEASE HELP US TO REDUCE KVXSTE! COYTACT'I'IIE DOCL'WlEYT CONTROL" DESK, ROO%1 Pl-37 (EXT. 504-o083 ) TO ELIl1flYATEYOUR YAIIL FROXI DISTRIBU'I'IOYLIS'I S I'Oft DOC!.'MEY'I'S l'OL'OY "I'L'ED!

TOTAL NUMBER OF COPIES REQUIRED: LTTR 8 ENCL 8

Pennsylvania Power 8 Light Company Two North Ninth Street ~ Allentown, PA 18101-1179 ~ 610/774-5151 Robert G. Byrarn Senior Vice President Nuclear 610/774-7502 Fax: 610/774-5019 DEC 19 1994 U.S. Nuclear Regulatory Commission Attn.: Document Control Desk Mail Station P 1-137 Washington, DC 20555 SUSQUEHANNA STE<AM E<LECTRIC STATION INTERIMRESPONSE TO GENERIC LETTER 94-03 Docket Nos. 50-387 antI 50-388

Reference:

PLA-4192 from Mr. R.G. Byram to Mr. C.L. Miller, "Initial Response to Generic Letter 94-03, " dated August 24, 1994.

Dear Sir:

This letter serves to provide PPkL's core shroud inspection scope and schedule for Susquehanna Steam Electric Station (SSES) Unit 1 in response to the requirements of Generic Letter 94-03 as committed to in the referenced PLA-4192.

PP&L commits to perform the scope of inspections as defined in the BWR Core Shroud Inspection and Flaw Evaluation Guidelines prepared by General Electric Nuclear Energy for the BWROG Vessel Internals Inspection Project, GENE-523-113-0894 for Category B plants. For SSES Unit 1, this inspection will include welds H-3, H-4, H-5, H-6A, and H-7 asshown on . All accessible portions of these welds will be inspected during the Unit 1 8th Refueling and Inspection Outage scheduled to begin in March 1995.

Due to the fabrication materials used, early plant chemistry, and the age of Unit 1, as referenced in PLA-4192, we do not expect to find any significant cracking (defined as greater than 10% of weld length). In the case where no significant cracking is found, we plan to perform additional weld inspections, beyond those cited above, as permitted by the outage schedule. Any of these additional inspections that are not completed will be accomplished in the next Unit 1 refueling and inspection outage scheduled to start in September 1996.

In the case where significant cracking is found, the examination scope for the Unit 1 8th Refueling and Inspection Outage will be increased to include all accessible portions of the remaining circumferential welds. These remaining welds are H-l, H-2; and H-6B, as shown on .

9412280279'41219 Oi<

PDR ADOCK 05000387 p PDR

FILE R41-2A PLA-4233 Document Control Desk We currently plan to use the BWR Core Shroud Distributed Ligament Length Computer Program to assess structural integrity if any cracking is discovered. This program will be used to help determine ifrepairs are necessary to ensure the structural integrity of the shroud. Ifrepairs are necessary, they will be performed in accordance with the BWR Core Shroud Repair Design Criteria and Flaw Evaluation Guidelines prepared by General Electric Nuclear Energy for the BWROG Vessel Internals Project.

We will submit results from the Unit 1 core shroud inspections to NRC within 30 days following the completion of all inspections accomplished during each Unit 1 outage as stated above. Also, we will forward our core shroud inspection scope and schedule for SSES Unit 2 at least 90 days prior to the beginning of the Unit 2 7th Refueling and Inspection Outage currently scheduled to start in September 1995.

Please call Mr. James B. Wesner at (610) 774-7911 ifyou have any questions.

Very truly yours Attachments cc: NRC Region I Ms. M. Banerjee NRC Sr. Resident Inspector Mr. C. Poslusny, Jr. NRC Sr. Project Manager

AFFIDAVIT COMMONWEALTH OF PENNSYL VANIA)

SS COUNTY OF LEHIGH )

I, ROBERT G. BYRAM, being duly sworn according to law, state that I am Senior Vice President Nuclear of Pennsylvania Power 8 Light Company and that the facts set forth in the attached interim response to Generic Letter 94-03, are true and correct to the best of my knowledge, information and belief.

e G. Byram Sr. Vi ident - Nuclear Sworn to and sugqt;ibed bt.'re,me< his '7~>day of

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., 1994.

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Aot i al Martha C. Sadora, tiotary Public Allentown, La'h'gh County Jan. 35. 199S My Commtsaion Exp.raa

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(TYP. OF N 190 N 210 J -1 150 14 LEGS) 0'0 JA-190 f 10'0'0'A-120 JA-210 Jh-240 JA-270 150 JA XR N I JA 150 N JA 10 N-150 360 17 00 120'60'35'A I-o 190'80'7-210'40'70'25 300'30'1d'HIOIG I )

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