ML20215J229

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Summary of Meeting W/Util on 870408 in Bethsda,Md Re Technical Issues Related to Util Amend Request for F* Steam Generator Tube Plugging Criteria.Attendees List & Meeting Viewgraphs Encl
ML20215J229
Person / Time
Site: Trojan File:Portland General Electric icon.png
Issue date: 06/22/1987
From: Chan T
Office of Nuclear Reactor Regulation
To:
Office of Nuclear Reactor Regulation
References
TAC-64756, NUDOCS 8706240370
Download: ML20215J229 (10)


Text

'

JUN 2 21987 Docket No. 50-344 LICENSEE: Portland General Electric Company (PGE)

FACILITY: Trojan Nuclear Plant

SUBJECT:

MEETING

SUMMARY

REGARDING THE APRIL 8, 1987 MEETING ON l F* - STEAM GENERATOR TUBE PLUGGING CRITERIA l l

' A meeting was held in Bethesda, Maryland on April 8,1987 with Portland General Electric Company to discuss the technical issues related to PGE's amendment request for F* steam generator tube plugging criteria. PGE's submittal LCA 152 dated February 20, 1987 provided background information on this topic. A list of attendees is provided in Enclosure 1.

PGE provided a presentation on the subject, and stated that the need for the amendment was due to " questionable" indications detected during the 1986 inspection of the steam generators (SG), in the region of the SG tubes where the F* criteria could be applied. The indications were labeled " questionable"  !

since they could not be accurately characterized. Enclosure 2 contains PGE's presentation handouts.

Allen Nuclear Associates, Inc. followed with a presentation on the eddy current testing performed at Trojan, which included discussions on eddy current probe uncertainties, observed indications and inspection technique.

The meeting was then closed to the public during the presentation by I Westinghouse. Westinghouse presented proprietary information regarding the analytic aspects of the F* evaluation.

The staff's preliminary conclusion was that the amendment request was technically acceptable, subject to certain changes to the proposed Technical Specifications. PGE agreed that the changes were necessary, and would be formally submitted. These changes were submitted by letter dated April 20, 1987. j Original Signed by TL CllAN Terence L. Chan, Project Manager Project Directorate V Division of Reactor Projects - III, IV, Y and Special Projects

Enclosure:

As stated DRSP/PDV D ;PDV  ;

TChan:cd ~ G 'hton 6/4/87 6)\'\ /87 0FFICIAL RECORD COPY

$[$ Nock P

Mr. David W. Cockfield Portland General Electric Company Trojan Nuclear Plant cc:

Senior Resident Inspector U.S. Nuclear Regulatory Commission Trojan Nuclear Plant Post Office Box 0 Rainier, Oregon 97048 Michael J. Sykes, Chairman Board of County Commissioners Columbia County St. Helens, Oregon 97501 Mr. David Kish Oregon Department of Energy Labor and Industries BJilding Room 111 Salem, Oregon 97310 Regional Administrator, Region V U.S. Nuclear Regulatory Commission 1450 Maria Lane, Suite 210 Walnut Creek, California 94596 Mr. C. K. Lewe NUS Corporation 910 Clopper Road Gaithers burg, MD 20878 W. L. Pearl, President NWT Corporation 7015 Realm Drive San Jose, California 95119

I DISTRIBUTION Focket File NRC-& Local PDRs PD#5 Reading GWKnighton TChan OGC-Bethesda EJordan JPartlow NRC Participants ACRS(10)

HBClayton(RI)

T. O. Martin - EDO

Enclosure 1 LIST OF ATTENDEES APRIL 8, 1987 NAME ORGANIZATION T. L. Chan NRC E. J. Sullivan NPC C. Y. Cheng, NRC C. D. Sellers NRC E. L. Murphy NRC G. A. Zinnaerman PGE A. O. Wogen PGE B. L. Curtis Allen Nuclear Associates R. F. Keating Westinghcuse D. A. Lindgren Westinghouse C. K. Lewe NUS Corporation

_______________._____m

ENCLOSURE 2 l

w -

TUBE 0.876 0.D.

TUBE SHEET = I h h 1.4 F*

l 3.0 h

Initial Hard roll h

[l 1.56 Repair Hard Roll

1. 6

( u U U U h

0.22 -

  • O'000 STEAM GENERATOR "B" gg. , ,,- HOT LEG M IMM% M P AIL DIMENSIONS IN INC'BES

O PREVIOUS EDDY CURRENT INDICATIONS IN TUBE SHEET REGION O TUBE SHEET (T/S) AREA INDICATIONS FIRST REPORTED IN 1985 O T/S INDICATIONS PRIMARILY S/G B HOT LEG O KNOWN INDICATIONS AFFECTED BY PROPOSED AMENDMENT ARE IN S/G B HOT LEG 1

l l

t

t

( ..

S/G B HOT LEG T/S INDICATIONS.

O- 111 T/S AREA INDICATIONS (UNK)

'O. 106 OF.THESE ARE WITHIN. SHOP HARD ROLL O ev 85 INDICATIONS ARE BELOW THE F* DISTANCE EXAMPLES OF HARD ROLL AREA INDICATIONS R 13 C 53 R 13 C 83 I

CHARACTERISTICS OF HARD ROLL AREAD INDICATIONS e OD ORIGINATED 8 AXIALLY ORIENTED 9 1/4" AXIAL LENGTH

W

\

\

CONCLUSIONS FROM PAST EDDY CURRENT DATA-I i

I 8 INSUFFICIENT PREVIOUS DATA TO ESTABLISH TREND

  1. OF" RATING EXPERIENCE IS NO DETECTABLE PRIMARY-TO-SECONDARY LEAKAGE l

l

5 I

l

\ l NEED FOR AMENDMENT O ELIMINATES TUBE END TRANSITION FROM CONSIDERATION O N 85 TUBES WOULD NOT REQUIRE CONSIDERATION FOR POSSIBLE PLUGGING

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