ML20073J808

Advises That Util Continuing Evaluation of Sensitized Reactor Recirculation Elbow Weld Found During NRC Metalography.Ge Matls Engineering Group Will Assess Weld. Addl Matl Analysis on 21 Supports Will Be Performed

ML20073J808
Person / Time
Site:	Zimmer
Issue date:	03/18/1983
From:	Herman J CINCINNATI GAS & ELECTRIC CO.
To:	Christianson W NRC
Shared Package
ML20073J753	List: ML20073J751 ML20073J769 ML20073J808 ML20073J826 ML20073J833
References
JCH-83-L27, NUDOCS 8304190413
Download: ML20073J808 (4)

Text

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THE CINCINNATI GAS & ELECTRIC COh!PANY March 18, 1983 JCH-33-L27-NUCLEAR REGULATORY' COMMISSION

. Zimmer Nuclear-Power Station

. Unit 1 l P. O. Box 2021 Moscow,-Ohio 45153 Attention: W. F. Christianson RE: Wm. H. Zimmer-Nuclear Power Station.- Unit 1 REACTOR RECIRCULATION ELB0W WELD SENSATIZATION W. O. 57300 Job E-5590 File 956

Dear Mr. Christianson:

-CG&E is continuing with its evaluation of the sensi tized RR Elbow Weld found during the NRC Metalography. GE San Jose 4

has received the NRC Metalograph provided by Technimet, Inc. GE is unable to assess theCG&E sensetization of the weld GE based on the

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information provided. has elected to bring Materials Engineering Group on site to assess this weld for themselves.

Based on the phone conversations on 3-18-83 between yourself, J. C. Herman and F. S. Hoover (CG&E) the following agreements were reached: ,

1. The assessment by GE can be performed on the jobsite ,

in accordance with the NRC letter dated 1-27-83.

2. All work to be performed in accordance with established site programs.

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Per NRC request (K. Herring) CG&E wi11 also perform additional material analysis on strut and snubber pins for approximately 21 supports. This analysis is for the lead content of the material. -

Approximately one gram of the material will be used in this analysis.

This may be done either by drilling or replacement of the pin'.'

This analysis is approved in accordance with the NRC letter dated January 27, 1933. .

4 If you have any questions concerning this matter, please contact-me at 553-2681 ext. 22.

Very truly yours, 8304190413 830414

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PDR ADOCK 05000358 A pg , C', $  %

J C. Herman Technical Coordinator cc: E. A. Borgmann H. R. Sager B. K. Culver J. B. Vorderbrueggen.__.... . .

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• LABORATORY REPORT

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~ METCUT RESEARCH ASSOCIATES INC.

3980 Rosslyn Drive, Cincinnats. Ohio 45209 / Teletype

810-4C1-2840 f Telephone: (513) 271-5100

[if HS/l Henry J. Kaiser Company Attn Scott Hoover Number: 1912-35244-1 To: P. O. Box 201 .

Moscow, OH 45153

. Date: March 21, 1983 Authorization: 9965971443 Project: Chemical Analysis (1) of Twenty-two Chip Samples for Percent Canposition of Elemental Lead Content. Elemental Percent Values were obtained in Accordance with AS'IM E-350. Results were as follows:

Sample Identification Lead Content ,

FX Floor #1 0.001%

R Floor #2 0.001 0345RS 0.001 050SR-S 0.001 0845RP 0.001 *

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0845RS 0.002 IRH139SR Clamp 0.012 IRH139SR End Attachnent 0.001 IRH1525RP 0.002 163SR End Attachment .0.002 1635SRP Extension at Pipe End 0.001 179SRP 0.001 179 SRP 0.001 .

185SRP 0.001 185SRS 0.001 187SRP 0.002 197SR Pin-1 Clevis 0.001 ~

198SRP 0.001 198SkS 0.001 ',

208SRP 0.001 208SRS '

O.001 (1), Analysis performed by F. C. Broeman & Company, Cincinnati, OH.

Mw Thomas D. DiLullo Chief Metallographer Page 1 of 1

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_ . . _ _ - .,,_ __.,._ __m Mih mATORY REPORT .

- f.2.If2d C METCUT RESEARCH ASSOCIATES INC.

. . 3980 Rosslyn Drive, Cincinnati. Ohio 45209 / Teletype: 810 461-28.40 / Telephore: (513) 271-5'00 r

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To: Henry J. Kaiser Cor.pany

• ATTN: Scott Hoover

- P.O. Box 201 Date: March 22, 1983 .

Moscow, OH 45153 Authorization: 7070-51-800 Project: Chemical Analysis ', Hardness and Tensile Testing of One Part Identified as Clamp No. 1RH139SR.

I. Chemical Analysis Chemical composition of the submitted clamp was performed in accordance with ASTM E-30 and E-315. Elemental percent values were as follows.

' Limits of AISI 4140 Carbon O.40% 0.38V - 0.43%

Manganese' O.76 ,

0.75. - 1.00 Phosphorus 0.015 0.040 Max.

Sulphur 0.018 0.040 Max.

Silicon 0.22 0.20 - 0.35 Chromium 0.80 0.00 - 1.10 Molybdenum 0.27 0.15 - 0.25 Nickel 0.15 2 Lead 0.012 .

(1) Analysis performed by F. C. Broeman & Company of Cincinnati, Ohio.

II. Tensile Results Tensile speciuten manufactured frort supplied clamp was tested at room -

temperature using methods prescribed in ASTM E8.

Nominal Gage Section: 0.25" diameter x 1.0" long Etrain Rate thru 0.2% Yield: 0.005 in./in./ min.

Head Rate thence to Failure: 0.05 in./in. .

vexo , . >_ . ..YY - //i er Louis J. Fri Manag

' Thomas D. DiLullo Chief Metallographer Creep, Stress Rupturc & Tensile Testing Page 1 of 2

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LABORATORY REPORT (cont'd)

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METCUT RESEARCH ASSOCIATES INC.

3980 Rosslyn Dove. Cincinnati. Ohio 45209 / Teletype: 810-461-2840 / Telephone: (513) 271-5100 F#M91] ,

Number: 1912-35244-2 .

0.2% Y.S. Elong. R.A.

- MRAI Specimen Y.S. ,

(ksi) (ksi) (%) (%)-

Number Identification 131.8 114.1 21.0 66.7 T-40260 1RH139SR (Clamp)

III. Hardness Hardness values were performed in accordanc'e with ASTM E-18. Direct hardness of the part averaged 26.0 Re.

(1) Average of five readings. .

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