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 i Y INFORMATION DISTRIBUTIO SYSTEM (RIDS)

ACCESSION NBR:9902180246 DOC.DATE: 99/02/09 NOTARIZED: NO FACIL:50-244 Robert Emmet Ginna Nuclear Plant, Unit 1, Rochester G

AUTH.NAME AUTHOR AFFILIATION MECREDY;R."(.".

Rochester Gas

& Electric Corp.

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

DOCKET ¹ 05000244

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.

DISTRIBUTION CODE:

A047D COPIES RECEIVED:LTR ENCL SIZE:

TITLE: OR Submittal: Inservice/Testing/Relief from ASME Code - GL-89-04 A

1 T

NOTES:License Exp date in acc'ordance with 10CFR2,2.109(9/19/72) 0500024 G

RECIPIENT ID CODE/NAME PD1-1 LA VISSING,G.

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1 AND ROCHESTER GASANDELECTRIC 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:

ReliefRequest 833

Dear Mr. Vissing:

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

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

This table details the differences between the ASME Section XIrequirements 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 XIrequirements in all areas.

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

Very truly yours, g

Robert C. Mecredy lj Attachment xc:

Mr. Guy S. Vissing (Mail Stop 14B2)

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

'tt'P02180246 990209

'DR

> ADGCK 05000244 8 ie PDR

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

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COMPARIONS OF RPV SHELL WELD EXAMINATIONTECHNIQUES Descri tion Codereference Examination Angles (Section V, T<41 and T-441.6)

Calibrations (Section V,T-432 and T-434)

Scan Direction (Section V, T-441.4, T-441.5 and T-441.6)

Scan Sensitivity Section V, T-425 Recording Level Scan Index Section V T-425 Flaw Sizing (Section V, T-441.8)

Scan Speed Section V, T-425 Procedure Qualification Data Analyst Standard Section V,XI, Reg. Guide 1.150 Procedure Four transducers required to perform the detection scans 0', 45'nd 60'or Code examination and a 70'-wave fordad to base metal interface, Reg. Guide 1.150 requirement.

Additional transducers used forsizing unacce table flaws.

0'5, and 60'calibrated on each ASME calibration standard based on examination thickness range, usually 11.0", 9.0" and 5.0" block. The 70'is calibrated on one calibration standard using 1/16 or 1/8'iameter side drilled holes. Three calibration blocks, ten calibrations.

To the extent practical the examination volume is scanned in four directions, two perpendicular and two parallel to the weld axis. The weld metal is scanned with two angles from two opposing directions and the base metal is scanned with two angles but not necessarily from two o

osin directions.

Section XI, +6dB beyond 25% of thickness.

Reg. Guide,

+14dB forthe first 25%

Section XI, 50% DAC. Reg. Guide, 20% DAC forthe first 25% of material thickness Minimum 10% overlap (IWA-2232 supplements this re uirement to a minimum of 50% overla Amplitude base sizing at 50% DAC. Tip diffraction as option forflaws determined to exceed, IWB-3500 acceptance standamls based on amplitude sizing.

Requires additional transducers, calibrations, and scanning Up to 6.0" per second.

Transducers capable of detecting the calibration reflectors in the application calibration block.

Certified Level II per Code of record.

FTI PDI/A endix VillQualification Procedure Three transducers 45'S, 45'L. and 70'L.

45'L and 70'L to examine the Inner 10% ofthickness 45'S and 45'L to examine beyond 10% thickness One calibration standard designed to establish calibrated time base and calibration sensitivity for each transducer using 1/16" or 1/8" diameter side drilled hoes.

One calibration standard, three calibrations.

The examination volume is scanned in four directions, two perpendicular and two parallel to the weld axis.

Sizing is preformed from both sides ofthe flawwhen possible.

Minimum+20dB at the maximum thickness of the a

licable examination volume.

70'L 20%DAC (1/16" dia. SDH cal.)

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

0.50 fordetection and 0.20'.sizing Tip diffraction techniques using the same transducers and calibrations used forthe initial detection scans.

FTI qualified the examination procedure for Supplement 4 and 6 sizing using the same transducers and calibrations used for detection.

In addition, FTI qualified a forward scatter time-of-flightdiffraction (TOFD) technique forthe Supplement 4 examination volume as a supplemental techni ue.

Up to 9.0'er second Performance demonstration using cracks (PDI).

Qualified on 12.0" thick samples containing a 12.0 wide band of manual dad 0.44 thick.

A minimum of a certified Level II qualified by performance demonstration usin cracks.