ML20244C660

Advises That Based Upon Util Participation in Westinghouse Owners Group Program for Resolution of Item 1.b of NRC Bulletin 88-011, Pressurizer Surge Line Thermal Stratification, 890301 Alternate Schedule Not Approved

ML20244C660
Person / Time
Site:	Summer
Issue date:	06/12/1989
From:	Hayes J Office of Nuclear Reactor Regulation
To:	Bradham O SOUTH CAROLINA ELECTRIC & GAS CO.
References
IEB-88-011, IEB-88-11, TAC-72171, NUDOCS 8906150076
Download: ML20244C660 (2)

Text

_ _ _ _ _ _ _

s p ur

,8 uq% ,

• UNITED STATES

[" "i; NUCLEAR REGULATORY COMMISSION 7,,

j WASHINGTON, D. C. 20555 k...+/

+

June 12, 1989 Docket No. 50-395 Mr. O. S. Bradham Vice President, Nuclear Operations South Carolina Electric & Gas Company Virgil C. Summer Nuclear Station P. O. Box 88 (Mail Code 601)

Jenkinsville, South Carolina 29065

SUBJECT:

SCHEDULAR RELIEF REQUEST RELATED TO NRC BULLETIN 88-11

" PRESSURIZER SURGE LINE THERMAL STRATIFICATION", ITEM 1.b -

VIRGIL C. SUMMER NUCLEAR STATION, UNIT N0.1 (TAC NO. 72171)

The purpose of this letter is to inform you of the implementation schedule for Item 1.b of NRC Bulletin 88-11 " Pressurizer Surge Line Thermal Stratification" that was mutually agreed upon between the NRC staff and the Westinghouse Owners Group (WOG) during an April 11, 1989 meeting.

By letter dated March 1,1989, South Carolina Electric & Gas Company proposed an alternate schedule for the completion of the bounding analysis required by Item 1.b of NRC Bulletin 88-11 regarding the design adequacy of the pressurizer surge line, taking into ta. count the effects of thermal stratification. Your proposed schedule for completion of Item 1.b (two years from the receipt of the Bulletin) was consistent with the alternate schedule proposed by the Westinghouse Owners Group (WOG) program.

During an April 11, 1989 meeting between the staff and the WOG, the staff stated that the alternate schedule as originally proposed by the WOG was unacceptable. Based upon additional discussion, the WOG agreed to notify its

nembership that licensees of plants in operation over 10 years should, by the end of May 1989, complete and have available for NRC audit, their bounding '

analysis as related to Item 1.b of the Bulletin, and submit to the NRC, a Justification for Continued Operation (JCO) in the event the results of the bounding analysis do not confirm the adequacy of the pressurizer surge line for the design life of the plant. Licensees of plants in operation less than 10 years would be notified that they were required to complete the required actions of Item 1.b within the originally stated period (one year from receipt of the Bulletin). The staff found these proposals to be acceptable.

It is our understanding that the WOG will provide you with a " generic" boundir.g to which your plant specific variables (eg., seismic and thermal analysis}

loadings will need to be incorporated. Your analysis should assess all aspects of thermal stratification, including bounding evaluations on stresses and fatigue, based on currently available information.

l f

o P

l

g .. ,

[ "

• , <1, p (,, .' : . , . ,

m .

p ,

s YNr.,D..S.Bradham >' >

-2 . June:12; 1989

(

. Based _upon your participation in the WOG program regarding this issue andf

absent any-other justification, your proposed alternate schedule of completing. -

. ' Item 1.b

is not, approved.

" accelerated.to> meet'the completion It is ourdate exp(ectation that by s) as committed your efforts' will be the~WOG.

/

. Sincerely, ,

1  % I.

Elinor G. Adensam/for-s ,; ,

John J. Hayes, Project Manager--

Project Directorate.II Division of Reactor. Projects'-I/II Office of huclear Reactor Regulation cc: -See next page DISTRIBUTION'

- Docket?Filea NRC PDR.

Local PDR .

PDII-1 Reading S. Varga 14-E-4 G. Lainas '14-H-3 E. Adensam ~ 14-8-20 P. Anderson 14-B-20 J. Hayes- 14-B-20 OGC 15-B-18 ,

E. Jordan MNBB>3302 B. Grimes 9-A-2 ACRS(10)- P-315 SUMMMER FILE f

LA; PJ II PM:PDII- 4 D DjIl-1 par dqh Hayes:suO EA ensam 6/m /89 /}/89 6/%9

hp n . 4 ,

f v. ,

'\

, - A'

.Mrs 0. S.iBradham g ,'. South Carolina Electric & Gas. Company Virgil C. Summer Nuclear Station.

L Mr. William A. Williams Jr.

-Technical Assistant - Nuclear Operations Santee Cooper- '

n ' P. 0. Box 764 (Mail Code 153)-

j Columbia,; South Carolina.'29218

-J.cB. Knotts, Jr., Esq.

Bishop,. Cook, Purcell

.and Reynolds'

~1400 L' Street, N.W.

Washington,;D. C. 20005-3502 s

Resident Inspector / Summer NPS.

c/o U.S. Nuclear Regulatory Commission Route 1, Box 64- .

Jenkinsville, South Carolina' 29065 Regional Administrator,' Region II U.S. Nuclear. Regulatory Commission, 101 Marictta Street, N.W., Suite 2900 sh

'~ Atlanta, . Georgia 30323 Chairman, Fairfield County Council P.-0.. Box 293' Winnsboro, South Carolina 29180 Attorney General P. 0.-Box 11549 Columbia, South Carolina 29211 Mr.- Heyward G. Shealy, Chief

Bureau of Radiological Health South Carolina Department of Health

..and Environmental Control

-2600 Bull Street:

Columbia, South Carolina 29201 South Carolina Electric & Gas Company Mr. A. R. Koon, Jr., Manager Nuclear Licensing Virgil C. Summer Nuclear Station P. O. Box 88 Jenkinsv111e, South Carolina 29065 l

~.

]

1