ML20237L317

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Forwards 840601 Telcon W/M Davis Re Verifying Statements Attributed to Davis by Licensee & Hudson Allegations.Related Info Encl
ML20237L317
Person / Time
Site: Diablo Canyon  Pacific Gas & Electric icon.png
Issue date: 07/01/1984
From: Reynolds S
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
To: Girard E, Hernandez G, Kirsch D, Ruff A
NRC
Shared Package
ML20237K209 List:
References
FOIA-84-743 NUDOCS 8708200171
Download: ML20237L317 (7)
v • d • e


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3 P.'0. Box 177 Avila Beach, California 93424

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(805) 595-2324

.June 14, 19S3 H. P. Foley Company P. O. Box 327 Avila Beach, California 93424 Attention:

Paul Bourque fiuclear Project Director i

l Diablo Canyon Project Specification 8802 Welder Qualification and Production Welding Superstrut Gentlemen:

fn regards to your questions referencing Specification 8802, Paragraph 6.1, the H. P. Foley Company shall be required to meet the following requirements:

A.

The H. P. Foley Company shall meet the requirements of AWS 01.1-75.

B.

AWS 01.1-75 does not specify subgrades of A570 material (i.e. A570 grade A-E, reference section 8) AWS has stated that A570 grade C is considered a material which is prequalified based on its. weld-ability, therefore, you are to consider A570 grade C as part of the group 1 material.

C.

Dr. Moss Davis (AWS) agrees that flared single level groove welds shall be considered fillet welds which are prequalified under pro-visions of AWS 01.1-75.

D.

AWS 01.1-75 has no provisions for practical testing of partial pene-tration flared V-groove welds, therefore, we consider them to be a reasonable facsimile of a partial penetration V-groove weld, which is prequalified.

y,.,,. I Due to our concern for meeting the minimum effective throat for this joint configuration, we request the H. P. Foley Company to perform the. attached weld test.

DCC

-1 :. c, E

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Howard.P. Foley June 16, 1983 v

,p 1

We request that the H. P. Foley Company revise QCP-5A revision 9, when the I

test has been completed and accepted.

Sincerely, 1

h D. A. Rockwell Assistant Project Superintendent

Attachment:

Weld Test i

a PROJECT DIRECTOR'S R0011NG:

Original:

C/ LA Coples:

P. BOUDQUE, Proj. Olt.

C S. MOSES, Sr. Prol. Mgr.

/

G. BROWN, Hight P.M.

/' # R. WILSON, Qual. Olr.

.fD F. LEE, Sched. Mgr.

C. NEEDHAM. Eng. Mgr.

j J. ROBISON, Asst. P.M.

J O. GOGGlH, Strue. Mgr.

J l

Action By: 71h/Se1/A/Md/Ah i

Date Due:

1 i

l I

DCC d ;) C 2 e

i.'

PARTIAL PENETRATION FLARED V-GROOVE WELD TEST

.il. P. Foley Company is required to perform the following production tests to meet qualification requirements for partial penetration flared V-groove welds.

i

1) ' Test material's' hall be "Unistrut" or "Superstrut" made of ASTM 570

~

grade C naterial.

I

2) Test assemblies shall be a minimum of 6" length.

3)

Welding shall be done in the flat position (IG).

4)

Each classification and diameter of electrodes used in production shall be tested.

5)

Test assemblies shall be sectioned in three locations; cut a mid i

length and one inch from the. ends.

The one inch ends shall be dis-'

2 carded.

6) Accepta6ce of the test assemblies is based on obtaining a 1/8" minimum effective throat on all cut surfaces.

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