ML20244D930

Forwards Augmented Insp Team Repts 50-369/89-06 & 50-370/89-06 on 890308-11 Re 890307 Steam Generator B Tube Failure.Concerns Raised Re Weaknesses in Procedures & Lack of Operator Confidence

ML20244D930
Person / Time
Site:	McGuire
Issue date:	04/10/1989
From:	Ebneter S NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To:	Tucker H DUKE POWER CO.
Shared Package
ML20244D932	List: IR 05000369/1989006 ML20244D930
References
NUDOCS 8904240206
Download: ML20244D930 (2)

See also: IR 05000369/1989006

Text

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April 10, 1989

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Docket Nos. 50-369, 50-370 l

License Nos. NPF-9, NPF-17

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. Duke Power Company

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ATTN: Mr. H. B. Tucker, Vice President

l- Nuclear. Production Department

/422 South Church Street

Charlotte, NC 28242

Gentlemen:

SUBJECT: MCGUIRE' AUGMENTED INSPECTION TEAM (AIT) REPORT

This refers to the special, onsite inspection conducted by the NRC Augmented

Inspection Team (AIT) during the period March 8-11, 1989. The inspection

included a review of the events related to the "B" steam generator tube failure

on - March 7, 1989, and subsequent recovery. At the conclusion of the

inspection, the findings 'were discussed with those members of nur staff

identified in the enclosed inspection report.

l ~ The AIT concluded that the tube failure did not result in a radiological

release to .the environment that exceeded regulatory limits or exceeded a

Technical Specification Safety Limit. The operating crew performed adequately

and they knew which procedure contained the actions or steps needed to

mitigate this event. However, the procedures were found to have significant

weaknesses which could result in unnecessary releases of radioactivity to the

environment should future steam generator tube rupture events occur. The

mitigative strategy which McGuire used for coping with this event deviated'

substantially from the Westinghouse Owner's Group Emergency Response

Guidelines. This was related to you in my letter of March 21, 1989,

concerning McGuire Nuclear Station Emergency Procedures, along with a request

for you to reevaluate these differences and document their justification for

our inspection by June 30, 1989. We are also concerned with operators lack of

confidence that certain systems would function as designed.

The enclosed copy of the AIT report identifies the areas examined during this

inspection. Within these areas, the inspection consisted of selective

examinations of procedures and representative records, interviews with

personnel, and observation of activities in progress.

In accordance with Section 2.790 of the NRC's " Rules of Practice," Part 2,

Title 10, Code of Federal Regulations, a copy of this letter and its enclosure

will be placed in the NRC Public Document Room.

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Duke Power Company 2

April 10, 1989

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We appreciate your cooperation during our team inspection and subsequent

evaluation of this event. Your open discussion of your findings and

evaluations was very beneficial.

Should you have any questions concerning this letter, please contact us.

Sincerely,

Original signed by

Stewart D. Ebneter

Stewart D. Ebneter

Regional Administrator

Enclosure:

AIT Report

cc w/ encl:

T. L. McConnell, Station Manager

Senior Resident Inspector - Catawba

State of North Carolina

bec w/ encl:

NRC Resident Inspector

DRS Technical Assistant

D. Hood, NRR

Document Control Desk

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