ML17265A543

Supplements 980806 Relief Request with Attached Table.Util Third 10-Yr ISI of Reactor Vessel Being Performed During 1999 Refueling Outage,Beginning on 990301

ML17265A543
Person / Time
Site:	Ginna
Issue date:	02/09/1999
From:	Mecredy R ROCHESTER GAS & ELECTRIC CORP.
To:	Vissing G NRC (Affiliation Not Assigned), NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9902180246
Download: ML17265A543 (5)

Text

CATEGORY 1 REGULA'l iY INFORMATION DISTRIBUTIO SYSTEM (RIDS)

ACCESSION NBR:9902180246 DOC.DATE: 99/02/09 NOTARIZED: NO DOCKET ¹ FACIL:50-244 Robert Emmet Ginna Nuclear Plant, Unit 1, Rochester G 05000244 AUTH. NAME AUTHOR AFFILIATION MECREDY;R."(.". Rochester Gas & Electric Corp.

RECIP.NECi'iE RECIPIENT AFFILIATION VISSING,G.S.

SUBJECT:

Supplements 980806 relief request with attached table, detailing differences between ASME Section XI requirements

& PDI technique. Approval of relief request ¹33 by 990301 would be appreciated. A 1

DISTRIBUTION CODE: A047D COPIES RECEIVED:LTR ENCL SIZE: T TITLE: OR Submittal: Inservice/Testing/Relief from ASME Code - GL-89-04 NOTES:License Exp date in acc'ordance with 10CFR2,2.109(9/19/72) . 0500024 G

RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD1-1 LA 1 1 PD1-1 PD 1 1 VISSING,G. 1 1 INTERNAL: AEOD/SPD/RAB NRR/DE/ECGB 1

1 1 1 ILE CE ER STRACT 1

1 1

1 OGC/HDS3 1 0 RES/DET/EIB 1 1 RES/DET/EMMEB 1 1 EXTERNAL: LITCO ANDERSON 1 1 NOAC 1 1 NRC PDR 1 1 NOTE TO ALL "RIDS" RECIP1ENTS:

PLEASE HELP US TO REDUCE WASTE. TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DISTRIBUTZON LISTS OR REDUCE THE NUMBER OF COPIES RECEIVED BY YOU OR YOUR ORGANIZATION, CONTACT THE DOCUMENT CONTROL DESK (DCD) ON EXTENSION 415-2083 TOTAL NUMBER OF COPIES REQUIRED: LTTR 13 ENCL 12'

1 AND ROCHESTER GAS AND ELECTRIC CORPORATION ~ 89 EASTAVENUE, ROCHESTER, N. Y IrI649-0001 ARFA CODE716 $ 46-2700 ROBERT C. MECREDY Vice President hlvdeor Operations February 9, 1999 U.S. Nuclear Regulatory Commission Document Control Desk Attn: 'uy S. Vissing Project Directorate I-1 Washington, D.C. 20555

Subject:

Relief Request 833

Dear Mr. Vissing:

On August 6, 1998, RG&E submitted Relief Request No. 33, seeking approval to use the Performance Documentation Initiative (PDI) qualified ISI techniques, rather than those required by the ASME Section XI Code, 1986 Edition, no addenda, paragraph IWA-2232.

By this letter, RG&E is supplementing the August 6, 1998 relief request, with the attached table.

This table details the differences between the ASME Section XI requirements and the PDI technique to be use by Framatome Technologies (FTI). As can be seen by this comparison table, the proposed methodology meets or exceeds the Section XI requirements in all areas.

Our third 10-year ISI of the reactor vessel is being performed during the 1999 refueling outage, beginning on March 1, 1999. Expeditious approval of Relief Request 833 by that date would be appreciated.

lj Very truly yours, Robert C. Mecredy g

Attachment xc: Mr. Guy S. Vissing (Mail Stop 14B2)

Project Directorate I-1 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C. 20555

'tt'P02180246 990209

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> ADGCK 05000244 PDR 8

Regional Administrator, Region I UiS. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 U.S. NRC Ginna Senior Resident Inspector

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COMPARIONS OF RPV SHELL WELD EXAMINATIONTECHNIQUES Descri tion Codereference Standard Section V,XI, Reg. Guide 1.150 Procedure FTI PDI/A endix Vill Qualification Procedure Examination Angles Four transducers required to perform the detection scans Three transducers 45'S, 45'L. and 70'L.

(Section V, T<41 and T-441.6) 0', 45'nd 60'or Code examination and a 70'-wave 45'L and 70'L to examine the Inner 10% of thickness for dad to base metal interface, Reg. Guide 1.150 45'S and 45'L to examine beyond 10% thickness requirement. Additional transducers used for sizing unacce table flaws.

Calibrations 0'5, and 60'calibrated on each ASME calibration One calibration standard designed to establish calibrated (Section V,T-432 and T-434) standard based on examination thickness range, usually time base and calibration sensitivity for each transducer 11.0", 9.0" and 5.0" block. The 70'is calibrated on one using 1/16" or 1/8" diameter side drilled hoes. One calibration standard using 1/16 or 1/8'iameter side calibration standard, three calibrations.

drilled holes. Three calibration blocks, ten calibrations.

Scan Direction To the extent practical the examination volume is scanned The examination volume is scanned in four directions, (Section V, T-441.4, T-441.5 and T- in four directions, two perpendicular and two parallel to the two perpendicular and two parallel to the weld axis.

441.6) weld axis. The weld metal is scanned with two angles Sizing is preformed from both sides of the flaw when from two opposing directions and the base metal is possible.

scanned with two angles but not necessarily from two o osin directions.

Scan Sensitivity Section XI, +6dB beyond 25% of thickness. Reg. Guide, Minimum+20dB at the maximum thickness of the Section V, T-425 +14dB for the first 25% a licable examination volume.

Recording Level Section XI, 50% DAC. Reg. Guide, 20% DAC for the first 70'L 20%DAC (1/16" dia. SDH cal.)

25% of material thickness 45'S -20% DAC, (1/8 dia. SDH cal) 45'L-10% DAC, 1/8" dia. SDH cal.

Scan Index Minimum 10% overlap (IWA-2232 supplements this 0.50 for detection and 0.20'.sizing Section V T-425 re uirement to a minimum of 50% overla Flaw Sizing Amplitude base sizing at 50% DAC. Tip diffraction as Tip diffraction techniques using the same transducers (Section V, T-441.8) option for flaws determined to exceed, IWB-3500 and calibrations used for the initial detection scans. FTI acceptance standamls based on amplitude sizing. qualified the examination procedure for Supplement 4 Requires additional transducers, calibrations, and and 6 sizing using the same transducers and calibrations scanning used for detection. In addition, FTI qualified a forward scatter time-of-flight diffraction (TOFD) technique for the Supplement 4 examination volume as a supplemental techni ue.

Scan Speed Up to 6.0" per second. Up to 9.0'er second Section V, T-425 Procedure Qualification Transducers capable of detecting the calibration reflectors Performance demonstration using cracks (PDI).

in the application calibration block. Qualified on 12.0" thick samples containing a 12.0 wide band of manual dad 0.44 thick.

Data Analyst Certified Level II per Code of record. A minimum of a certified Level II qualified by performance demonstration usin cracks.