ML18153B127

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Forwards Evaluation of Use of Molded Case Circuit Breakers That Exceed Mfg Fault Current Rating,Per
ML18153B127
Person / Time
Site: Surry, North Anna  Dominion icon.png
Issue date: 10/25/1994
From: Thadani M
Office of Nuclear Reactor Regulation
To: Boger B
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
TAC-M88797, TAC-M88798, TAC-M88799, TAC-M88800, NUDOCS 9411040275
Download: ML18153B127 (1)


Text

October 25, 1994 ~

MEMORANDUM TO:

Bruce A. Boger, Acting Director Division of Reactor Projects, RII FROM:

Mohan C. Thadani, Acting Director Project Directorate II-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation

SUBJECT:

TASK INTERFACE AGREEMENT (TIA 94-009) - VIRGINIA POWER'S STUDY CONDUCTED ON SURRY AND NORTH ANNA MOLDED CASE CIRCUIT BREAKERS WHICH EXCEED FAULT CURRENT RATINGS (TAC NOS. M88797, M88798, M88799, AND M88800)

By memorandum dated February 15, 1994, Ellis W. Merschoff requested assistance in evaluating Virginia Power's analyses which were done to justify the use of molded case circuit breakers in applications which exceed their manufacturer's fault current rating at the Surry and North Anna Power Stations.

Our evaluation of the above-cited analyses, including supplemental information from the licensee dated September 16, 1994, (copy enclosed), is described in the attachment.

We have completed our efforts on this issue and are, therefore, closing out TAC Nos. M88797, M88798, M88799, and M88800.

Docket Nos. 50-280, 50-281 50-338, 50-339

Attachment:

As stated Distribution

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