ML20058H649

Requests Addl Info Re TS Change Deleting Section 3/4.6.1.5, Primary Containment Structural Integrity, for Plant Units 1 & 2

ML20058H649
Person / Time
Site:	LaSalle
Issue date:	12/02/1993
From:	Gody A Office of Nuclear Reactor Regulation
To:	Farrar D COMMONWEALTH EDISON CO.
References
TAC-M87305, TAC-M87306, NUDOCS 9312130166
Download: ML20058H649 (4)

Text

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o UNITED STATES 8 -

n NUCLEAR REGULATORY COMMISSION

$ 7

$ WASHINGTON, D. C. 20555

%, December 2, 1993 Docket Nos. 50-373 and 50-374 Mr. D. L. Farrar Manager, Nuclear Regulatory Services Commonwealth Edison Company Executive Towers West III, Suite 500 1400 OPUS Place Downers Grove, Illinois 60515

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION REGARDING TECHNICAL SPECIFICATION CHANGE DELETING SECTION 3/4.6.1.5, " PRIMARY CONTAINMENT STRUCTURAL INTEGRITY" FOR LASALLE COUNTY STATION, UNITS 1 AND 2 (TAC NOS.

i M87305 AND M87306)

By letter dated August 20, 1993, Commonwealth Edison Company (Ceco) submitted

• a request to amend Facility Operating Licenses NPF-ll and NPF-18, Appendix A, Technical Specifications to delete Section 3/4.6.1.5, " Primary Containment

• Structural Integrity." Based on a preliminary review of your submittal, the staff is requesting the following additional information to support completion of our review:

A. In Attachment A of your submittal under " Description of the Need for Amending the Technical Specifications," it is indicated that in spite of the fact that the Inservice Inspections (ISIS) of the two units were performed 4.5 years apart (in contrast to the 2 year interval stipulated in Regulatory Guide (RG) 1.35, Revision 3) the two units can still be considered as twin units and the surveillances can be performed on an alternate basis. The rationale for the exception as given is the demonstrated tendon integrity during the past ISIS of the two units.

Your submittal does not contain specific data to support this conclusion. The staff is requesting the following information to support our review:

1. The data collected at the time of the ISI test (ISIT) for each unit as required by RG 1.18. This data should be presented either in graphs or tabular form.

2. The data accumulated from ISIS performed 1, 3, 5,10, and 15 years after the ISIT for Unit I and I, 3, and 5 years after the ISIT for  !

Unit 2, as required by RG 1.35, Revision 3. Particular emphasis should be placed on the tendon lift-off force for each of the fixed i tendons; or in the case of random samples for a group of tendons, to the representative lift-off force for the group. In order to determine the trend in the reduction of tendon force, the lift-off 0600h -

9312130166 931202 PDR ADOCK 05000373 3 0i p PDR c

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.Mr. D. L. Farrar December 2, 1993 force for each group of tendons obtained from the past ISITs should be plotted in the same manner as indicated in RG 1.35, Revision 3. j

3. Any other information which might affect the integrity of the tendons as specified in RG 1.35. For example, the effect of high t temperature on relaxation of tendons.

B. Also;in Attachment A under " Description of the Need for Amending the  :

Technical Specifications," you state that specification 3/4.6.1.5 is '

redundant to specification 3/4.6.1.1. The staff does not believe that to be the case. Containment integrity is comprised of two components:

leaktight integrity and structural integrity. Structural integrity is a necessary condition of containment integrity but is not sufficient without leaktight integrity. Specification 3/4.6.1.1 deals with leaktight integrity and specification 3/4.6.1.5 deals with structural -

integrity. In view of this fact, your statement regarding the '

redundancy of these two specifications is incorrect and the statement should be changed accordingly. i We request that the response to this request for additional information be provided within 30 days from receipt of this letter. If you have any questions regarding this request, please call the NRC Project Manager, Anthony T. Gody, Jr., at (301) 504-1387.

The reporting and/or recordkeeping requirements contained in this letter affect 1 fewer than ten respondents; therefore, OMB clearance is not required under P.L.96-511.

Sincerely, i i

%n?J Signed gy:

Anthony T. Gody, Jr., Project Manager  ;

Project Directorate III-2 Division of Reactor Projects - III/IV/V Office of Nuclear Reactor Regulation cc: see next page DISTRIBUTION: Docket File (50-373 & 50-374) NRC & Local PDRs PDIII-2 r/f J. Roe J. Zwolinski J. Dyer C. Moore A. Gody, Jr. 0GC ACRS (10)

B. Clayton RIII C. Tan 0FC b;PDlII-2 PM:PDIII-2 D:PDIII-2 NAME N0YEh AGODYJR A _ JDYER b  !

DATE O/M/93 9 /w /93 /2-/ 2 /93 / /93 / /93 / /93 l COPY (YES)/NO @/NO YES/8 YES/N0 YES/N0 YES/NO

l

.. l I

Mr. D. L. Farrar LaSalle County Station Commonwealth Edison Company Unit Nos. I and 2 )

CC:  !

Phillip P. Steptoe, Esquire Robert Cushing l Sidley and Austin Chief, Public Utilities Division '

One First National Plaza Illinois Attorney General's Office Chicago, Illinois 60603 100 West Randolph Street '

Chicago, Illinois 60601  ;

Assistant Attorney General 100 West Randolph Street Michael I. Miller, Esquire Suite 12 Sidley and Austin Chicago, Illinois 60601 One First National Plaza Chicago, Illinois 60690 Resident Inspector /LaSalle, NPS U. S. Nuclear Regulatory Commission Rural Route No. 1 LaSalle Station Manager P. O. Box 224 LaSalle County Station 1

~

Marseilles, Illinois 61341 Rural Route 1 P. O. Box 220 Chairman Marseilles, Illinois 61341 LaSalle County Board of Supervisors  !

LaSalle County Courthouse Ottawa, Illinois 61350 Attorney General I 500 South 2nd Street Springfield, Illinois 62701 Chairman Illinois Commerce Commission Leland Building  :

527 East Capitol Avenue Springfield, Illinois 62706 Illinois Department of Nuclear Safety Office of Nuclear Facility Safety 1035 Outer Park Drive Springfield, Illinois 62704 Regional Administrator, Region III U. S. Nuclear Regulatory Commission ,

799 Roosevelt Road, Bldg. #4 Glen Ellyn, Illinois 60137 Robert Neuman Office of Public Counsel State of Illinois Center '

100 W. Randolph Suite 11-300 i Chicago, Illinois 60601 l I

1

_ ~

I Mr. D. L. farrar December 2, 1993 force for each group of tendons obtained from the past ISITs should )

be plotted in the same manner as indicated in RG 1.35, Revision 3.

3. Any other information which might affect the integrity of the i tendons as specified in RG 1.35. For example, the effect of higt(

temperature on relaxation of tendons.  ;

B. Also; in Attachment A under " Description of the Need for Amending the  !

Technical Specifications," you state that specification 3/4.6.1.5 is ,

redundant to specification 3/4.6 l.1. The staff does not believe that i to be the case. Containment integrity is comprised of two components:

leaktight integrity and structural integrity. Structural integrity is a necessary condition of containment integrity but is not sufficient without leaktight integrity. Specification 3/4.6.1.1 deals with leaktight integrity and specification 3/4.6.1.5 deals with structural '

integrity. In view of this fact, your statement regarding the  :

redundancy of these two specifications is incorrect and the statement ,

should be changed accordingly. l We request that the response to this request for additional information be l provided within 30 days from receipt of this letter. If you have any questions regarding this request, please call the NRC Project Manager, Anthony T. Gody, Jr., at (301) 504-1387. ,

The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under P.L.96-511. .

.1 Sincerely,  ;

OlghalSicnod g y  ;

Anthony T. Gody, Jr., Project Manager Project Directorate III-2 Division of Reactor Projects - III/IV/V ,

Office of Nuclear Reactor Regulation cc: see next page >

DISTRIBUTION: Docket File (50-373 & 50-374) NRC & Local PDRs PDIII-2 r/f J. Roe J. Zwolinski J. Dyer ,

C. Moore A. Gody, Jr. 0GC ACRS (10)  ;

B. Clayton RIII C. Tan i 0FC iAODlII-2 PM:PDIII-2 D:PDIII-2  ;

NAME NOTEh AGODYJR A JDYER b l DATE N/[/93 0 /w /9h G/'L/93 / /93 / /93 / /93 COPY l (YES/N0 6E3/N0 YES/'tF YES/NO YES/NO YES/NO a