ML20199C081

Forwards Safety Evaluation Re Second 10-yr Interval Inservice Insp Program Plan

ML20199C081
Person / Time
Site:	Byron
Issue date:	01/13/1998
From:	Capra R NRC (Affiliation Not Assigned)
To:	Kingsley O COMMONWEALTH EDISON CO.
Shared Package
ML20199C085	List: ML20199C081 ML20199C123
References
TAC-M94830, TAC-M94831, NUDOCS 9801290124
Download: ML20199C081 (4)

Text

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i y UNITED OTATES t

• NUCLEAR REGULATORY COMMISSION f 5 wmmeton, o.c. menwen  !

'e*** January 13, 1998

Mr. Oliver D. Kingsley, President  !

Nuclear Generation Group l j Commonwealth Edison Company [

' Executive Towers West lli (

1400 Opus Place, Suite 500  !

Downers Grove,IL 60515 3

SUBJECT:

SECOND 10 YEAR IN8ERVICE INSPECTION PROGRAM RELIEF REQUESTS - L BYRON STATION, UNITS 1 AND 2 (TAC NOS. M94830 AND M94831) l

Dear Mr. Kingsley:

l 4 i By letter dated February 23,1996, Commonwealth Edison Company (Comed) submitted its j

. second 10 year inservice inspection (181) program for Byron Station, Un is 1 and 2. Additional -;

information was provided in Comed's letters of April 10,1996, August 05,1996, December 16, i

1996, and April 10,1997.

i' By letter of June 12,1996, Comed withdrew Relief Request 12R 11, and 12R 11 (Revision 1) was submitted on August 12,1996. On July 22,1996, we authorized Relief Request 12R 12 pursuant  ;

to 10 CFR 50.55a(s)(3)(i). The enclosed Safety Evaluation (SE) documents our review of l i

additional relief requests from the February 23,1996, submittal.

With the exception of Relief Request 12R 13, "lWF 5300, inservice Examination and Test l Requirements for Snubbers," we reviewed and evaluated (with the assistance of our contractor, j the Idaho National Engineering Laboratory (INEL)), the information provided h support of the  !

remaining relief requests. We adopt INEL's conclusions and recommendations presented in their Technical Letter Report which is attached to the SE.  ;

Relief Rsquests 12R 05 (Revision 2),12R-06,12R 07,12R-06,12R 10,12R 13 (Revision 1), and ,

12R 18 are authorized pursuant to 10 CFR 50.55a(a)(3)(i) because the proposed altematives  !

would provide an acceptable level of quality and safety.  !

Relief Request 12R 09, " Examination Categories C-F 1 and C F 2, items C5.41 and C5.61,  !

Circumferential tranch Connection Wolds," is authorized pursuant to 10 CFR 50.55a(g)(6)(i)  ;

, because of the impracticality of the Code requirements for the subject welds and the assurances  !

I provided by the altemative surface examination and Code-required pressure tests, l

Relief Request 12R 11 (Revision 1), " Paragraph (WA 5242(a), VT Visual Examination of Insulated

Components," is authorized for Class 1 systems because the proposed altemative provides a thorough approach to ensuring the leak tight integrity of systems borated for the purose of >

I controlling reactivityi For Class 1 systems, comed's approach will provide an soceptable level of quality and safety, and is authortrod pursuant to 10 CFR 50.55a(a)(3)(i). However, for Class 2 ,

and 3 systems, the frequencies proposed for insulation removal have not been found acceptable >

l by the NRC, and the attemative proposed 'n 12R 11 (Revision 1) is not authorized for those i systems. '

Relief Request 1215, "Use of Code Case N-4161, Altomate Testing for Class 1, Class 2,'and -

Class 3 Welded Repaired / Replaced Components, Relief Request 12R 16 "Use of Code Case ]j  !

l

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m

O. Kingsley 2- '

i N-4961, Ahomative Rules for 10 Year System Hydraulic Testing for Class 1,2, and 3 Systems,"

and Relief Request 12R 17 (Revision 2),"Use of Code Case N 50g, Ahomate Rules for the selection and Examination of Class 1,2, and 3 Integrally Wolded Attact ments, Section Xl, Division 1,* are authorized pursuant to 10 CFR 50.55a(a)(3)(i) for the current interval or until such time as published in a future revision of RG 1.147. At that time, if Comed intends to continue to implement these Code Cases, it must follow all provisions, if any, in the Code Cases, with limnations issued in RG 1.147.

The results of our review of the remaining relief requests will be issued at a later date by a separate letter.

Sincerely, frWW*fW Rober1 A. Capra, Director ,

Project Directorale 1112 Division of Reactor Projects - lil/IV office of Nuclear Reactor Regulation Docket Nos. 8TN 50-454, STN 50-455

Enclosure:

SE w/ attached TLR cc w/ encl: See next page

- , . - . , , . . - ~ . - , _ . ~ . ,, , . . , . , - . - , , ,

e ..

r .

.O. Einssicy ,

a N-4861 Allemative Rules for 10-Year system Hydraulic Testing for Class 1,2, and 3 Systems,"  ;

and Relief Roguest 12R.17 (Revision 2), "Use of Code Case N 509, Allemale Rules for the -!

i selection and Examination of Class 1,2, and 3 Inte0 rally Wolded Attachments, section XI,  :

f Division 1," are authortred pursuant to 10 CFR 50.55a(a)(3)(l) for the current interval or until such time as putdished in a future revision of RG 1.147. At that time, if Comed intends to continue to  !

implement these Code Cases, it must follow all provisions, if any, in the Code Cases, with  !

limitations issued in RG 1.147. l t

The results of our review of the remaining relief requests will be issued at a later date by a i separate lettw, i J

sincerely,  !

Origins 1 Signed by: >

Robert A. Capra, Director [

Proja:t Directorate lil 2 1 Division of Reactor Projects lil/IV --

office of Nuclear Reactor Regulation  !

l Docket Nos. 8TN 50 454, STN 50-455,  !

3

Enclosure:

SE w/ attached TLR cc w/ encl: See next pa9e DISTRIBUTION:  !

Asestj PUBLIC . PD3-2 r/f E. Adensam, EGA1 l R. Capra i C. Moore G, Dick . ACRS. T2E26 OGC,015818 , M. Jordan, Rill T. McLellan F. Grubelich  !

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l Commonwealti Edson Company Units i and 2 -

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! lechsel1. heller Esquire Atomey General Sidney and Ausen 500 8. Second Street l

One First Nellonel Plere Spttngeoid,lillnois 82701 Chloe00, Illinois 80003 ,

Commonwoollh Edloon Compeay '

Regional Adminielretor, Repion IN Spon tiellon Manager U.s. Nuclear Requistory Comminolon 4450 North German Church Road 001 Werrorwille Reed Dron, Illinois 81010-8794 i Unio, Illinois 00532 4351 #

Commonwoollh Edloon Company  :

lillnois Department of Nuclear safety Site Vloo Proeident. Spon Ottoo of Nuoleer Poolley safety 4461 N. German Church Reed .!

1035 Outer Park Drtve tron, Illinois $1010-8794 i Mr. Michael J. Wellece Document Control Dook-Ucensing Nuclear Servlees senior Vlos Proeident Commonwoollh Edloon Company Commonwoollh Edison Company -

1400 Opus Pleos, Sulle 400 Eueoutve Towers West til DownersGrove, Illinois 00515 1400 Opus Pleos, Sulle 900  !

Downers Grove,IL 60515 i Mr.Willlem P Poirior.Direo6er 7l: " #.:m Elecirle Corporaton Mr. Gene H. Stanley  :

> Energy Syoiems Businees Unit PWR's Vlos President  !

Post 0%ios Bau 355, Boy 236 W. Commonwealth Edison Company Painburgh, Pennsylvania 15230 Exeov0ve Towers West til ,

1400 Opus Place, Sulle 900 t Joseph Gallo Downers Grove,IL 00515 Gallo & Ross 4 1250 Eye St., N.W., sulle 302 Mr. 8teve Perry  ;

?!W: ,, DC 20005 BWR's Vlos President .

Commonweehh Edison Company  ;

Noward A. Leemer Executve Towers West til +

Erwironmentallow and Polley 1400 Opus Pleos, Sulle 900 Center of the Mldwest Downers Grove,IL 60515 i 203 North Letelle Street Sulle 1390 Mr. Dennis Ferror Chicago, Illinois 40601 Regulatory Services Manoper .

Commonwoolth Edison Company ,

U.S. Nuclear Regulatory Comminaion Execupve Towers West til t Bron Residentinspectors Ofnce 1400 Opus Pleos, Sulle 500 4444 North German Church Road Downers Grove,IL 90515 Spon, Illinois 81010-G750 Ms. lrone Johnson, Llooneing Director Ms.Lonreine Crook Nuclear Regulatory Serv 6ces RR 1 Box 152 Commoinveelth Edloon Company Monteno,Ilknois 80050 Executve Towers West 111 1400 Opus Place, suite 500 l

. Chelrman, Ogle County Board Downers Grove,IL 80515 '

Post oftco Don 357 .

l Oregon, Illinois 61081 Commonwoolth Edison Company Reg. Assurance Supervisor. Byron Mrs.Phillip 8. Johnson 4450 N. Germen Church Road 1907 Stralford Lane Bron, Illinois 61010-9704  !

Rocidord,llenois $1107

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