ML19259C852

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Modifies 790606 Response to IE Bulletin 79-03 Re Longitudinal Weld Defects.Discusses Use of Gas Strippers & Regenerative Heat Exchangers Mfg by Youngstown Welding & Engineering Co
ML19259C852
Person / Time
Site: Satsop
Issue date: 07/10/1979
From: Renberger D
WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To: Engelken R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
GO3-79-1283, IEB-79-03, NUDOCS 7908160015
Download: ML19259C852 (2)


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  • ]' Washington Public Power Supply System A JOINT OPERATING AGENCY

] P. O. Bo x 9 6 8 3000 Gro. Wa sMi=GroN WAY FtlCML A ND, W A 9 HlN G TON 99352 PMomt (509) 375-5000 Docket t;os. 50-508 and 50-509 37 23 .c, s itri.s Mr. R. H. Engelken, Director ,o fd y , ,' J pC.,1 3.a -

U.S. fluclear Regulatory Commission Region V D\'A D#  ; 'j .if C! ;5/

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Suite 202, Walnut Creek DlaZa

,\ -- i 1990 fl. California Boulevard Walnut Creek, CA 94596 W.OM'$' '

Subject:

WPPSS f;UCLEAR PROJECTS 110S 3 & 5 IE BULLETIll NOS. 79-03 LONGITUDINAL WELD DEFECTS If1 STAltitESS STEEL PIPE SPOOLS

Reference:

Letter, da ted JuneD.L. 6,1979.

Renberger to R.H. Engelken, same subject,

Dear Mr. Engelken:

WPPSS has recently received new information which modified its response )

to the as subject IE Bulletin submitted to you in the reference letter follows:

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i Gas strippers are used in the primary loop to remove dissolved l I

gas from the management primary coolant and process it to the waste gas system. l Regenerative heat exchangers (one per stripper) for the gas strippers incorporate ASME 312-TP304L pipe manufactured as follows: by Youngstown Welding and Engineering Company Shell - 12 inch temperature is 325pige, F. design pressure is 250 psig, design Channel - 12 inch pipe, design pressure is full vacuum to 80 psig design temperature is 325 F.

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Both strippers for WNP-3 and 5 have recently been delivered to the site.

A program for the one time volumetric examination of the longitudinal welds in the above pipe is being developed to confirm that the ASME Section III acceptance criteria have not been exceeded. A description of this and any plans for corrective action which nay be required, will be submitted as they become dVailable.

If you have any questions, please feel free to contact me.

Very truly yours, l7 l/c-Lwb 7Y D. L. REf'BERGER Assistant Director - Technology Dil:FJ:ds cc: D Smithpeter, BPA NRC, Office of Inspection & Enforcement, Washington D.C.

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