ML20203B996

Forwards Assessment Rept of Containment Bldg 15-year Tendon Surveillance for Virgil C Summer Nuclear Station Submitted on 960808.Review of Rept Concurs W/Conclusion That Overall Containment Tendon Sys Condition,Satisfactory

ML20203B996
Person / Time
Site:	Summer
Issue date:	02/05/1998
From:	Padovan L NRC (Affiliation Not Assigned)
To:	Gabe Taylor SOUTH CAROLINA ELECTRIC & GAS CO.
Shared Package
ML20203B999	List: ML20203B996 ML20203C002
References
TAC-M96490, NUDOCS 9802250032
Download: ML20203B996 (3)

Text

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t j NUCLEAR REGULATORY COMMISSION WASHINGTON. D.C. 30e4&4001

%,.....[ February 5, 1998 Mr. Gary J. Taylor Vice President. Nuclear Operations South Carolina Electric & Gas Company Virgil C. Summer Nuclear Station Post Office Box 88 Jenkinsville. South Carolina 29065

SUBJECT:

REVIEW 0F THE CONTAINMENT BUILDING 15. YEAR TENDON SURVEILLANCE REPORT FOR VIRGIL C. SUMMER NUCLEAR STATION (TAC NO. M96490)

Dear Mr. Taylor:

On August 8, 1996. South Carolina Electric and Gas Company (SCE&G) submitted a Virgil C. Summer Unit 1 containment building 15-year physical tendon surveillance report to us for our review. We have completed our review of this report, and concur with your conclusion that the overall containment tendon system condition is satisfactory. However, we recommend that you follow the guidance in Section 4.4 of NRC Regulatory Guide 1.35. Proposed Revision 3. " Inservice Inspection of Ungrouted Tendons in Prestressed Concrete

, Containments." for future tendon surveillance. Regulatory Guide 1.35 methods help you determine how well you are performing the surveillance. You can also use the guidance to trace the source of any tendon lift-off test errors without much additional effort. We also recommend that in determining the trend of the tendon forces of a group through the use of linear regression i analysis, you use the individual tendon forces in the group, not their average.

Your 20-year surveillance results might indicate that the hoop and dome tendon forces will go below the minimum required values prior to the 32nd year after the structural integrity test. We recommend that you develop a long-term plan to address this potential situation. You have indicated that you will update your tendon surveillance program to comply with 10 CFR 50.55a pejor to the next (sixth) tendon surveillance. This will require that you incorporate ASME Section XI Subsections IWE and IWL into your Inservice Inspection Program.

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-2 Enclosed is a copy of our related NRC Assessment Report. If you have any questions regarding this matter, please contact me at (301) 415-1423.

Sincerely.

(Original Signed By)

L. Mark Padovan, Proiect Manager Project Directorate il-1 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation Docket No. 50-395

Enclosure:

as stated cc w/ encl: See next page Distribution (DocketiFile "

PUBLIC PD II-1 Reading G. Bagchi C. Tan J. Strosnider J. Zwolinski B. Haag, RII M. Padovan W. Dean Document Name G:/ SUMMER / SUM 96490.ltr to receive a copy of thte document, indicate in the boa: "C' = Copy without at*schment/ enclosure "f" = Copy with attachment! enclosure "N* = No copy 0FFICE PDI!-1/PM [C_,j PDil-1/LA lEI A l l D:PDil-1 A l~

NAME MPadovan M EDumington_[7h G8achi S W LN mlg7 WMDean ((L W DATE 2/ 3 /98 2/ 3 /98 2/ /98 \ 2/4 /98 0FFICIAL RECORD COPY

Mr. Gary J. Taylor VIRGIL C, SUMMER NUCLEAR STATION l

South Carolina Electric & Gas Company l

cc: .

Mr. R. J. White J. B. Knotts, Jr., Esquire Nuclear Coordinator Winston & Strawn Law Firm e S.C. Public Service Authority 1400 L Street, N.W.

c/o Virgil C. Summer Nuclear Station Washington, D.C. 2000E 3502 Post Office Box 88. Maii 0. ode 802 Jenkinsv111e, South Carolina 29065 Resident Inspector /kmmer NPS c/o U.S. Nuclear Regulatory Commission Route 1, Box 64 Jenkinsv111e, South Carolina 29065  !

Regional /dministrator Region !!

U.S.---Nuclear Regulatory Commission '

Atlanta Federal Center 61 Forsyth Street. SW, Suite 23T85 i Atlanta, Georgia 30303 Chairman, Fairfield-County Council Drawer 60 Winnsboro, South Carolina 29180 Mr. Virgil R. Autry Director of Radioactive Waste Management Bureau of Solid & Hazardous Waste Management Department of Health & Envf ronmental Control i 2600 Bt01 Street  ;

Columbia, South Carolina 29201 Mr. Robert M. Fowlkes, Manager Operations

South Carolina Electric & Gas Company Virgil C. Sum w Nuclear Station, Mail Code 303

• l Post Office Box.88-Jenkinsv111e South Carolina 29065 -

l t Ms.-April-R. Rice. Manager Nuclear Licensing & Operating Experience South Carolina Electric & Gas Company

. Virgil C. Summer Nuclear Station. Mail Code 830 l Post Office Box 88 '

l-Jenkinsv111e. South Carolina 29065 l

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