ML18153D017

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Forwards Request for Relief from Inservice Insp Program Re Surface Exam Requirements of ASME Section XI for Integral Attachments on RHR HXs
ML18153D017
Person / Time
Site: Surry 
Issue date: 05/27/1992
From: Stewart W
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
92-285, NUDOCS 9206010125
Download: ML18153D017 (8)
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Text

{{#Wiki_filter:AC~LERATED DijRIBUTION DEMONSTltTION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS) ACCESSION NBR:9206010125 DOC.DATE: 92/05/27 NOTARIZED: NO DOCKET# FACIL:50-281 Surry Power Station, Unit 2, Virginia Electric & Powe 05000281 AUTH.NAME AUTHOR AFFILIATION STEWART,W.L. Virginia Power {Virginia Electric & Power Co.) RECIP.NAME

  • RECIPIENT AFFILIATION Document Control Branch {Document Control Desk)

SUBJECT:

Forwards request for relief from inservice insp program re surface exam requirements of ASME Section XI for integral attachments on RHR HXs. DISTRIBUTION CODE: A04 7D COPIES RECEIVED: LTR / ENCL J SIZE: /J TITLE: OR Submittal: Inservice Inspection/Testing/Relief from A~stfi-r=E~C-o~d-e~ R I D s NOTES:lcy NMSS/SCDB/PM. 05000281 / A RECIPIENT ID CODE/NAME PD2-2 LA BUCKLEY,B INTERNAL: ACRS NRR/DET/EMEB 7E ~c!~~Ei~ 01 ~~Ds.iR/EIB EXTERNAL: EG&G BROWN,B NRC PDR NOTES: COPIES LTTR ENCL 1 0 2 2 6 6 1 1 1 0 1 1 1 1 1 1 1 1 1 1 NOTE TO ALL "RIDS" RECIPIENTS: RECIPIENT ID CODE/NAME PD2-2 PD NRR/DET/ECMB 9H NUDOCS-ABSTRACT OGC/HDS2 RES MILLMAN,G EG&G RANSOME,C NSIC COPIES LTTR ENCL 1 1 1 1 1 1 1 1 1 1 0 1 1 1 PLEASE HELP US TO REDUCE WASTE! CONT ACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 20079) TO ELIMINATE YOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED! TOTAL NUMBER OF COPIES REQUIRED: LTTR 23 ENCL 20 D / D s R I D s I A D D s

VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 May 27, 1992 United States Nuclear Regulatory Commission Attention: Document Control Desk Washington, D. C. 20555 Gentlemen: VIRGINIA ELECTRIC AND POWER COMPANY SURRY POWER STATION UNIT 2 Serial No. 92-285 NO/ETS Docket No. 50-281 License No. DPR-37 INSERVICE INSPECTION PROGRAM REUEF REQUEST Pursuant to 1 O CFR 50.55a, paragraph g(5), relief is requested from the surface examination requirements of ASME Section XI for integral attachments on the Residual Heat Removal Heat Exchangers. The attached relief request (SR-15) is being submitted for approval and inclusion in the current second interval program for Surry Unit 2. Justification for the proposed exemption from the impractical inspection requirement is provided in the attached relief request. If you have any questions or require any additional information, please contact us. Very truly yours, Jl~-

w. L. Stewart Senior Vice President - Nuclear Attachment cc:

U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, N. W. Suite 2900 Atlanta, Georgia 30323 Mr. M. W. Branch NRC Senior Resident Inspector Surry Power Station _________ !.; *; r.* r~ 92060l.0125 920527 - l ~~1 \\ I PDR ADOCK 05000281 ___ G ___ _ -. *___ ____ __ PDR. \\_

Relief Request SR-15 I. Identification of Components System: Residual Heat Removal Components: Integral Attachments on Drawings 11548-WMKS-RH-E-1 A and 11548-WMKS-RH-E-1 B, listed below: Component Integral Attachment Class 2-RH-E-1A 1-1001-1 2 2-RH-E-1A H002-1 2 2-RH-E-1 B 1-1001-1 2 2-RH-E-1 B 1-1002-1 2 II. Impractical Code Requirements Category C-C of the 1980 Edition, Winter 1980 Addendum of ASME Section XI, item C3.10, requires a surface examination on 100% of the required areas of each integral attachment. In the case of multiple vessels of similar design and service, the required examinations may be conducted on one vesseL Conversely, where multiple vessels are provided with a number of similar attachments, the examination of attachments may be distributed among the vessels. Ill. Basis For Relief These heat exchangers and the integral attachments were designed and constructed to ASME Section VIII, 1965 Edition, Winter 1966 Addendum. This edition of the Section VIII Code only required a visual examination of the integral attachments. The acceptance criteria, as stated in paragraph UW-38, "Repair of Weld Defects," required that visible defects, such as cracks, pinholes, incomplete fusion, and defects detected by hydrostatic test be removed. These integral attachments never received, nor were they required to receive, a surface examination under Section VIII of the construction code. *Additionally, the initial preservice examinations at Surry were limited to Class 1 components, since Class 2 and 3 components had not yet been included in Section XI of the ASME Code. As such, the welded areas of these integral attachments were not prepared for examination and preservice surface examinations were not conducted on the welds. The actual surface condition of the integral attachments is indicative of only a visual type examination during plant construction.

Attempts to examine these attachments as part of the present inservice inspection program, which requires a surface examination, have resulted in indications indicative of a generally rough surface condition. The latest surface examinations of the integral attachments were considered unacceptable due to the inability to perform a surface examination on the rough surface condition using today's standards. An evaluation of the man-hours and dose requirements necessary to properly prepare these welds for a surface examination, which will include both grinding and welding of the integral attachments, has been completed. It was estimated that an expenditure of 11.74 man-rem would be necessary to properly prepare these attachments for a Section XI preservice examination. This dose expenditure and additional outage maintenance is impractical considering that the original Section VIII Construction Code accepted the surface condition visually. IV. Alternate Requirements The integral attachments shall be visually inspected (VT-3) for cracking or other conditions described as unacceptable in paragraph UW-38, "Repair of Weld Defects" of the original Section VIII Construction Code.

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