United States Nuclear Regulatory Commission - Protecting People and the Environment

Morning Report for January 20, 2000

                       Headquarters Daily Report

                         JANUARY 20, 2000

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                    REPORT             NEGATIVE            NO INPUT
                    ATTACHED           INPUT RECEIVED      RECEIVED

HEADQUARTERS        X
REGION I                               X
REGION II                              X
REGION III                             X
REGION IV                              X
PRIORITY ATTENTION REQUIRED  MORNING REPORT - HEADQUARTERS JANUARY 20, 2000

Licensee/Facility:                     Notification:

Part 21 Database                       MR Number: H-00-0001
Westinghouse                           Date: 01/20/00


Subject: Part 21 - Degraded stock DB-25 circuit breaker

Discussion:

VENDOR: Westinghouse                    PT21 FILE NO: 99-44-0

DATE OF DOCUMENT: 06/18/99              ACCESSION NUMBER: 9908090058

SOURCE DOCUMENT: LETTER                 REVIEWER: REXB, T. Koshy


NEW ISSUE. The Ginna licensee reports that a safety-related Westinghouse
DB-25 breaker mechanism in stock did not pass degradation checks.
Misaligned drilled holes in the mechanism caused misalignment of the pin
above the toggle lever. Also, the right rear quarter section of the
tripper pan is bent upward, resulting in unsatisfactory tripper bar gaps.

NRC contact with the manufacturer confirmed that the assembly would
continue to operate if the mechanism is positioned geometrically
compatible with the other pieces because the pin out of level is not one
of the critical characteristics for the operation. The bent trip pan
could be the result of handling but the breaker performed properly with
these deficiencies when tested as a part of incoming inspection.
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