ML20006E907

Discusses Plants Design Control Program.Util Adopted Concept of Design Change Implementation Package (Dcip).Dcip Will Contain or Ref Design Change Notice Prepared Per Approved Procedures

ML20006E907
Person / Time
Site:	Browns Ferry, Sequoyah, 05000000
Issue date:	02/16/1990
From:	Medford M TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9002260526
Download: ML20006E907 (2)

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'In the' Matter of' )'

Docket Nos. 50-259 i 1 '

' Tennessee Valley 1Authortty' '

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BR0HNS FERRY-NUCLEAR PLANT (BFN) AND SEQUOYAH NUCLEAR PLANT-(SQN) - DESIGN .

CONTROL PROGRAM -l

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TVA ha's taken' major steps to improve the design control process. The process k

.previously.~describc_d in the BFN and.SQN Nuclear Performance Plans-utilized a  !

. modification. package; concept' based on a' defined, specific, executable scope of-n work including drawings; installation specificaP ons, workplans, and-Inspection requirements. The purpose of this' letter is to apprise'NRC of<the

'.l '  : ongoing' refinements to the. process.

hThe modification. package was implemented using two processes. Both processes contained the requirements as' outlined in the BFN and SQN Nuclear Performance ,

1 Plans.-.Minoramodifications were to be processed using the= Design. Change Notic k(DCN); package, and all other modifications were to;be processed'using.

"the. Plant' Modification Package-(PHP). A min'or!modificat.lon was intended'to 1

, y-have a: negligible:effect on plant functions, to be limited in scope, and to.

require limited engineering evaluation or' analysis to justify the. change.  ;

Horkplans-were'not included in the DCN but were stand-alone documet,ts that implemented and referenced the design change. The PMP was intended to be-comprehensive, stand-alone documentation that provided the design +

+ requirements, design basis, installation, and verification requirements for a V4 specific plant' modification. . Based on experience and further evaluation of- .

the design control program, it was determined that the DCN process was  :

sufficient to maintain design control. The PHP was determined to be  ;!

EM . unnecessary in that it is not essential to have such a comprehensive package  :

cful.lyldevelopedprior'toissuingthedesignchange.

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o jThereforestosimplifytheprocess,-TVAhasadopted'theconceptoftheDesign s  ; Change Implementation Package (DCIP). The DCIP will contain or reference a i, 'DCN. prepared-in'accordance with approvcd procedures, associated workplans ,

' ,N showing installation requirements, test plans identifying postmodification and =

r functional testing requirements, and organizational impact evaluations. The U

4 DCIP-.is~ developed after issuance of the DCN and in parallel with the installetion of the' change. These-refinements will cdntinue to provide a I{

l r*e  ; timely _ design' control" process that' accurately updates design documents and p' p' ensures continued' implementation of TVA's commitment as defined in the BFN ald-i ,SQN. Nuclear-Performance Plans. 3 g

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IfLyou haveJany questions. con'cerning'this issue, please contact M. A. Cooper.

at1(615):843-6651.

y 4 Very)truly yours, k

w TENNESSEE VALLEY AUTHORITY 1

I~ f Mark'O. Medford,.Vice President >,

p Nuclear Technology and Licensing-cc: Ms. S. C. Black,.' Assistant Director

=

for Projects

-TVA Projects Division _ .,

g, U.S. Nuclear: Regulatory Commission 10ne' White Flint,: North ,

, 1.1555 Rockville Pike' j

-Rockville,. Maryland 20852 :i

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,INP0 Records Center =i

, Institute of Nuclear Power Operations e' 11100 Circle'75-Parkway, Suite 1500 Atlanta, Georgia 30339

~,RegionalJAdministrator U.S.. Nuclear. Regulatory Commission' 3 Office of Inspection and Enforcement -i.

Region II .

101 Marietta; Street, Suite 2900 1 Atlanta, Georgia 30323 l Mr..B.'A. Wilson,-Assistant Director

'for Inspectlon Programs 1 TVA' Projects Division .

1 U.S. Nuclear Regulatory Commission RegiontII W =101 Marietta-Street, NW, Suite 2900 -j Atlanta, Georgia 30323 '

'NRC Senior Resident Inspector Browns Ferry Nuclear Plant Route:12, Box 637-g Athens, Alabama 35609-2000 j

'NRC Senior. Resident Inspector

'Sequoyah Nuclear Plant i 2600 Igou' Ferry Road l

~ Soddy Dalsy, Tennessee 37379 i

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