ML18026A536

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Requests Relief from ASME Code Section III NC-5230,Category C for Field Weld on Line HBB-110-4.W/three Oversize Drawings
ML18026A536
Person / Time
Site: Susquehanna Talen Energy icon.png
Issue date: 12/29/1994
From: Byram R
PENNSYLVANIA POWER & LIGHT CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML17164A504 List:
References
PLA-4219, NUDOCS 9501040155
Download: ML18026A536 (8)


Text

RIORITY CCELERATED RIDS PROCESSING REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:9501040155 DOC.DATE: 94/12/29 NOTARIZED: NO DOCKET N FACIL:50-387 Susquehanna Steam Electric Station, Unit 1, Pennsylva 05000387 AUTH. NAME AUTHOR AFFILIATION BYRAM,R.G. Pennsylvania Power & Light Co.

RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

Requests C for field relief from ASME Code Section weld on line HBB-110-4.

III NC-5230,Category NOTES'5000387 DISTRIBUTION CODE: A047D TITLE: OR RECIPIENT COPIES RECEIVED:LTR Submittal: Inservice/Testing/Relief from RECIPIENT ENCL SIZE:

ASME Code GL-89-04 COPIES 0

ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD1-2 LA 1 1 PD1-2 PD 1 1 POSLUSNY,C 1 1 INTERNAL: 6 6 AEOD/SPD/RAB 1 1 NOTES'OPIES

"'FILE CEN DE/EMEB OGC/HDS7.

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NRR/DE/EMCB NUDOCS-ABSTRACT RES/DSIR/EIB 1

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1 EXTERNAL: LITCO BROWN, B 1 1 LITCO RANSOME, C 1 1 NOAC 1 1 NRC PDR 1 1 D

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iNOTE TO ALL"RIDS" RECIPIEYTS:

PLEASE HELP'US TO REDUCE iV'iSTE! COYTACTTHE DOCL'WIEYTCONTROL DESK, ROO!il Pl-37 (EXT. 504-~083 ) TO ELI XIIX~ATEYOL'R iA!i!LFROil DIS'I RIBUTIOY LISTS I'OR DOCI. XIEN'I'S YOL'Oi "I'I ED!

TOTAL NUMBER OF COPIES REQUIRED LTTR 21 ENCL 20

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Pennsylvania Power & Light Company Two North Ninth Street ~ Allentown, PA 18101-1179 ~ 610/774-5151 DEC 29 1994 Robert G. Byrarn Senior Vice President Nuclear 610/774-7502 Fax: 610/774-5019 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Station P1-137 Washington, DC 20555

'I SUSQUEHANNA STEAM ELECTRIC STATION REQUEST FOR RELIEF FROM ASME CODE SECTION HI NC-5230, CATEGORY C FOR LINE HBB-110-4, FIELD WELD 6 Docket No. 50-387 The purpose of this letter is to request relief from ASME Code Section III NC-5230, Category C for field weld 6 on line HBB-110-4. During a review of radiograph microfilm on March 14, 1994, the Code required radiograph for a repair on HBB-110-4 field weld 86 station 26-39 could not be located.

The weld in question did not have radiographic examination (RT) records for one segment where a weld repair was performed. The weld is located on the 1D RHR Pump suction line (24") inside the Suppression Pool just above the lower suction strainer. From a review of the records, no record of a final RT being performed after weld repair could be found for station 26-39, one of 6 segments (approximately 13 inches each) around the circumference of the pipe. Liquid Penetrant Reports (PT-3614 and PT-3708) indicate there were two two-inch segments within station 26-39 that were in the process of being repaired. This report indicates that the Penetrant test of these two areas was acceptable following the grinding. However, there is no record of a final RT being performed following the repair. Records of final RTs performed at all of the other stations were located and found to be acceptable. Although there is no record of a final RT for Station 26-39, there is no reason to believe the weld is unacceptable given the information available at this time.

The repair was performed in 1978 and the piping has been in service for a significant period of time with no known problems. Although no detailed inspections have been performed on this piping, a general visual inspection was performed during the Unit 1 sixth refueling and inspection outage by divers in this specific area of the Suppression Pool. The divers did not identify any problems with this piping. In addition, this weld is on a section of pipe that is not subjected to a differential pressure of any significance since the pipe is essentially open ended except as restricted by the suction strainers.

The location of this weld is shown on the attached design drawings (ISI-HBB-110-4 and M-151).

'50i040i55 94i229 PDR ADOCK 05000387 P PDR ~@id'O'APJ'n CZnbD&i/~~

FILE R41-2 PLA-4219 Document Control Desk We believe that this relief is acceptable based upon:

~ The weld is located under water in the wetwell. The ISI examination selection criteria allow for excluding components that are not accessible. Radiographic examinations are used to evaluate ISI (NDE) indications; however, since this weld will not be NDE examined during its service life, a final radiograph will not be used for comparison purposes.

~ The liquid penetrant tests show no indications.

~ The final radiographs on the other stations were acceptable.

~ During a general visual inspection of the suppression pool, no problems were identified.

Ifyou have any questions, please contact Mr. C. T. Coddington at (610) 774-7915.

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

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