ML20217Q403

Refers to Which Provided 10CFR50.59 Summary Rept Unreviewed Safety Question Evaluation 95-0044,which Evaluates Elimination of Environ Qualification of Mechanical Components at Stp.Forwards RAI

ML20217Q403
Person / Time
Site:	South Texas
Issue date:	04/08/1998
From:	Alexion T NRC (Affiliation Not Assigned)
To:	Cottle W HOUSTON LIGHTING & POWER CO.
References
TAC-M98912, TAC-M98913, NUDOCS 9804100421
Download: ML20217Q403 (4)

Text

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I Mr. Willi:m T. Csttia April _8. 1998

. Presid:nt cnd Chi:f Ex:cutiv3 Officer STP Nuclear Operating Company South Texas Project Electric Generating Station P. O. Box 289 Wadsworth, TX 77483

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION (RAI) ON ELIMINATION OF ENVIRONMENTAL QUALIFICATION OF MECHANICAL COMPONENTS, SOUTH

! TEXAS PROJECT, UNITS 1 AND 2 (STP)(TAC NOS. M98912 AND M98913)

Dear Mr. Cottle:

By letter dated December 17,1996, your staff provided its 10 CFR 50.59 Summary Report.

Unreviewed Safety Question Evaluation (USQE) #95-0044, which evaluates the elimination of the environmental qua!ification of mechanical components at STP, was one of several USOEs from the Summary Report that the Nucloar Regulatory Commission (NRC) staff selected for further review. Upon notification that USQE #95-0044 was selected for further review, your staff promptly provided the USQE #95-0044 document.

The NRC staff is reviewing the USQE #95-0044 document and has identified additional information that is needed. It is requested that you provide the additionalinformation within 30 days from the date of this letter.

Sincerely, , )

ORIGINAL SIGNED BY:

Thomas W. Alexion, Project Manager Project Directorate IV-1 Division of Reactor Projects lil/IV Office of Nuclear Reactor Regulation Docket Nos. 50-498 and 50-499

Enclosure:

RAI cc w/ encl: See next page DISTRIBUTION:

Docket File PUBLIC PD4-1 r/f EAdensam (EGA1) JHannon CHawes j TAlexion OGC ACRS g TGwynn, RIV \ 'I i

Document Name: STP98912.RAI , f OFC PM/ED4M LA/PD4-1 BC/SPLB PD/P

( T/ \ j NAME Tale ob CHawN LMarshd JHannon l DATE 'lb/98 Y/O /98 / // /98 h h /9_8 )

COPY hES)NO YES/NO YES/Nb YES/h0)

OFFICIAL RECORD COPY 9804100421 980408 PDR i

ADOCK 05000498 1  !

N~ RC Filf CEMEB C

pa uc u gf'r 4 UNITED STATES j

y NUCLEAR REGULATORY COMMISSION 2 WASHINGTON, D.C. 20 6 0001 44 ,o

• • • • • April 8, 1998 Mr. William T. Cottle President and Chief Executive Officer STP Nuclear Operating Company South Texas Project Electric Generating Station P. O. Box 289 Wadsworth, TX 77483 l

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION (RAI) ON ELIMINATION OF l ENVIRONMENTAL QUALIFICATION OF MECHANICAL COMPONE'lTS, SOUTH TEXAS PROJECT, UNITS 1 AND 2 (STP)(TAC NOS. M98912 AND M98913)

Dear Mr. Cottle:

By letter dated December 17,1996, your staff provided its 10 CFR 50.59 Summary Report.

Unreviewed Safety Question Evaluation (USQE) #95-0044, which evaluates the elimination of the environmental qualification of mechanical components at STP, was one of several USQEs from the Summary Report that the Nuclear Regulatory Commission (NRC) staff selected for further review. Upon notification that USQE #95-0044 was selected for further review, your staff promptly provided the USQE #95-0044 document.

The NRC staff is reviewing the USQE #95-0044 document and has identified additional information that is needed. It is requested that you provide the additional information within 30 l days from the date of this letter.

Sincercly,

'e J uw # J4A.~

Thomas W. Alexion, Project Manager Project Directorate IV-1 Division of Reactor Projects Ill/IV Office of Nuclear Reactor Regulation Docket Nos. 50-498 and 50-499

Enclosure:

RAI cc w/ encl: See next page l

Mr. William T. Cottle l STP Nuclear Operating Company - South Texas, Units 1 & 2 cc:

. Mr. David P. Loveless Jack R. Newman, Esq. -1 l

Senior Resident inspector Morgan, Lewis & Bockius' U.S. Nuclear Regulatory Commission 1800 M Street, N.W.

P. O. Box 910 Washington, DC 20036-5869.

l Bay City, TX 77414 Mr. Lawrence E. Martin i A. Ramirez/C. M. Canady Vice President, Nuc. Assurance & Licensing City of Austin STP Nuclear Operatire Company Electric Utility Department P. O. Box 289 721 Barton Springs Road Wadsworth, TX 77483 Austin, TX 78704 Office of the Govemor Mr. M. T. Hardt ATTN: John Howard, Director  ;

Mr. W. C. Gunst Environmental and Natural l City Public Service Board '

Resources Policy P. O. Box 1771 P. O. Box 12428 San Antonio,TX 78296 Austin,TX 78711 Mr. G. E. Vaughn/C. A. Johnson Jon C. Wood Central Power and Light Company Matthews & Branscomb P. O. Box 289 One Alamo Center ,

Mail Code: N5012 106 S. St. Mary's Street, Suite 700 l

Wadsworth, TX 74483 San Antonio, TX 78205-3692 I INPO Arthur C. Tate, Director Records Center Division of Compliance & Inspection 700 Galleria Parkway Bureau of Radiation Control Atlanta, GA 30339-3064 Texas Department of Health 1100 West 49th Street Regional Administrator, Region IV Austin, TX 78756 i U.S. Nuclear Regulatory Commission  :

611 Ryan Plaza Drive, Suite 400 ,

Jim Calloway Ariington, TX 76011 Public Utility Commission of Texas Electric Industry Analysis D. G. Tees /R. L. Balcom P. O. Box 13326 Houston Lighting & Power Co. - Austin, TX 78711-3326 l P. O. Box 1700 l Houston,TX 77251 Judge, Matagorda County .

Matagorda County Courthouse 1700 Seventh Street i l- Bay City, TX 77414 Y

s

REQUEST FCR ADDITIONAL INFORMATION ELikilNATION OF THE ENVIRONMENTAL QUALIFICATION (EQ1 OF MECHANICAL COMPONENTS NECT. UNITS 1 AND 2 DOCKET NOS. 50-498 AND 50-499

1. What are the differences between the Mechanical EQ Program that was previously in the Updated Final Safety Analysis Report (UFSAR) and what is currently in the UFSAR to replace the program? Were the mechanical EQ components defined in the UFSAR? Are there any components that were in the Mechanical EQ Program that do not have any maintenance, surveillance or periodic testing associated with them in the current UFSAR?

2. Section A.1, ll1 of Unreviewed Safety Question Evaluation #95-0044 states, ". . out of 2578 safety related mechanical components,2527 components do not require replacements or refurbishment during the 40-year life of the plant and therefore do not require any EQ related maintenance activities." However, if one of the 2527 components had to be replaced within the 40-year life of the plant, what controls would be in place to ensure that the replacement component would be processed through the appropriate design and procurement process?

3. What types of components are included in the remaining 51 components that do require replacement or refurbishment during the 40-year life of the plant? Are these components safety-related? What controls are in place to ensure that the replacement components would be processed through the appropriate design and procurement process?

4. Does the FIT, FORM, and FUNCTION methodology used in the item Equivalency Evaluation identify the non metallic material capabilities of components and their replacements? How does the FIT, FORM, and FUNCTION methodology evaluate the environmental effects of the non-metallic materials in components and their replacements? Does this methodology include a 50.59 screen to identify when a design change exists? Does the methodology provide a mechanism to send the change through the design change process, if necessary?

5. How do the maintenance, surveillance, and periodic testing currently at STP detect aging mechanisms?

6. Section A.3, I of Unreviewed Safety Question Evaluation #95-0044 states that the STP Surveillance Program is in place to verify the operability of safety-related mechanical equipment with non-metallic parts. Does the surveillance program include testing non-metallic parts for harsh environments? Explain how the testing is performed.

ENCLOSURE