ML20006A422

Responds to NRC Bulletin 89-003, Potential Loss of Required Shutdown Margin During Refueling Operations. Indivduals Responsible for Refueling Operations Will Be Trained on Revised Procedures During Next Refueling Outage

ML20006A422
Person / Time
Site:	Sequoyah
Issue date:	01/19/1990
From:	Michael Ray TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
IEB-89-003, IEB-89-3, NUDOCS 9001260242
Download: ML20006A422 (3)

Text

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e-TENNESSEE VALLEY AUTHORITY CH ATTANOOGA, TENNESSEE 37401 SN 157B Lookout Place JAN 191990 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk

'Hashington, D.C.

20555 Gentlemen:

In the Matter of

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Docket Nos. 50-327 Tennessee Valley Authority

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50-328 SEQUOYAH NUCLEAR PLAN'T - NRC BULLETIN 89-03, POTENTIAL LOS5 OF REQUIRED SHUTDOWN MARGIN DURING REFUELING OPERATIONS As required by the reporting requirements section of the subject bulletin, this submittai provides a description OT planned and completed actions to address the potential loss of required snutdown matgin durlag refueling operations.

TVA has evaluated potential fuel assembly configurations and fuel enrichments to determine allowable configurations that maintain a 5 percent or greater shutdown margin.

This evaluation assumed high enrichment fuel assemblies (5 percent by weight uranium -235) and bounds current and future core design plans. _SQN's refueling operations and core loading procedures will be revised to reflect the results of the evaluation before refueling operations during the next refueling outage.

The Individuals responsible for refueling operations, who are the fuel handling supervisors and test directors, will be tralned on the revised procedures before refueling operations during the next refueling outage.

The training will include the fundamental aspects of criticality control with higher enrichment fuel assemblies and the potential consequences of violating the procedures.

Summary statements of the commitments contained in this submittal are provided in the enclosure.

Please direct questions concerning this issue to K. S. Whitaker at (615) 843-7748.

Very truly yours, TENNESSEE VALLEY AUTHORITY

\\M M

h Manager, Nuclea ictnsing and Regulatory Affairs Enclosure cc:

See page 2 iC Cl l }

An Equal Opportunity Employer

4 1 U,5.NuclearRegulatoryCommission g gg g cc (Enclosure):

Ms. S. C. Black, Assistant Director for Projects TVA Projects Division U.S. Nuclear. Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852 Mr. B. A. Wilson, Assistant Director for Inspection Programs TVA Projects Division U.S. Nuclear Regulatory Commission l

Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 1

NRC Resident Inspector Svaucyan Nuclear ?ltnt 2600 Igou Ferry Road Soddy Daisy, Tennessee 37379 1

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n.3 ENCLOSURE 9;

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LIST Of COMMITMENTS o

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SQN's refueling operations and core loading procedures will be revised to i

. reflect the results of the evaluation before refueling operattoits during 1

the next refueling outage.

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Fuel handling supervisors and test directors will be trained on the' l

revised refueling operations and core loading procedures before refueling operations during the next refueling outage.

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