United States Nuclear Regulatory Commission - Protecting People and the Environment

Morning Report for June 19, 2002

                       Headquarters Daily Report

                         JUNE 19, 2002

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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 JUNE 19, 2002

Licensee/Facility:                     Notification:

Part 21 Database                       MR Number: H-02-0042
Rockwell Automation                    Date: 06/18/02


Subject: Part 21 - Inadequate electric motor winding slot fill

Discussion:

VENDOR: Rockwell Automation         PT21 FILE NO: m2-10-0

DATE OF DOCUMENT: 05/09/02          ACCESSION NUMBER: ml021370450

SOURCE DOCUMENT: LETTER             REVIEWER: RORP, I. Jung

Rockwell Automation (Reliance Electric), a vendor of electric motors used
to drive fan assemblies, reported a potential defect involving
insufficient slot fill in motor windings. Current surges that can cause
the coil to move inside the slot are possible on startup, during speed
changes, or during severe load changes. The part or component numbers are
1KXV60nnn, where nnn takes the values 028, 084, 125, 133, and 247. The
affected domestic nuclear utilities are Duke Energy and Toledo Edison.

Contact:    I. Jung, NRR
            301-415-1837
            E-mail: ixj@nrc.gov
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HEADQUARTERS      MORNING REPORT     PAGE  2          JUNE 19, 2002

Licensee/Facility:                     Notification:

Part 21 Database                       MR Number: H-02-0046
General Electric                       Date: 06/18/02


Subject: Part 21 - Undersized washer in switch plate locking mechanism
         on differential pressure indicating switches


Discussion:

VENDOR: General Electric            PT21 FILE NO: m2-11-0

DATE OF DOCUMENT: 05/10/02          ACCESSION NUMBER: ml021360140

SOURCE DOCUMENT: LETTER             REVIEWER: RORP, C. Petrone

General Electric (GE), a supplier of systems that use Barton Model 288A
and 289A differential pressure indicating switches, reported a recently
discovered potential for setpoint drift in seismic or plant vibration
events for these models manufactured before 1986. GE states that these
models were most likely assembled with an undersized washer in the switch
plate locking mechanism. A 1/2" OD X 0.063" thick flat washer should have
been used, whereas a 3/8" OD X 0.032' thick flat washer might have been
used. GE recommends inspection of these instruments at the next regularly
scheduled maintenance or surveillance opportunity.

Contact:    C. Petrone, NRR
            301-415-1027
            E-mail: cdp@nrc.gov

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HEADQUARTERS      MORNING REPORT     PAGE  3          JUNE 19, 2002

Licensee/Facility:                     Notification:

Part 21 Database                       MR Number: H-02-0047
Abb                                    Date: 06/18/02


Subject: Part 21 - Loose screw in cutoff switch contact assembly for
         low voltage power circuit breakers


Discussion:

VENDOR: ABB                         PT21 FILE NO: m2-12-0

DATE OF DOCUMENT: 05/14/02          ACCESSION NUMBER:

SOURCE DOCUMENT: EN 38919           REVIEWER: RORP, V. Hodge

ABB, a vendor of K-Line circuit breakers, reported a failure to charge at
San Onofre. The mechanism was a special configuration of the base 709774
Model '05' mechanism manufactured in October 1997 and in a safety-related
application. Earlier in 2002, the vendor learned of failures to charge
and close in similar circuit breakers at Surry and at a nonnuclear power
plant.  The vendor states that these failures are due either to the
charging cam not having enough energy to rotate past the center point
into a fully charged position or the primary close latch not fully
clearing after the secondary close latch actuation. ABB recommends (1)
replacement of the suspect operating mechanism, part number 709774T##,
with a Model '07' mechanism, part number 716785T##; or (2) improving the
suspect operating mechanism by means of available upgrade or repair kits.

Contact:    V. Hodge, NRR
            301-415-1861
            E-mail: cvh@nrc.gov

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HEADQUARTERS      MORNING REPORT     PAGE  4          JUNE 19, 2002

Licensee/Facility:                     Notification:

Part 21 Database                       MR Number: H-02-0048
Solid State Controls                   Date: 06/18/02


Subject: Part 21 - Potential for loose fan blade in uninterruptible power
         systems


Discussion:

VENDOR: Solid State Controls            PT21 FILE NO: m2-13-0
DATE OF DOCUMENT: 05/15/02              ACCESSION NUMBER: ml021510295

SOURCE DOCUMENT: LETTER                 REVIEWER: RORP, R. Caldwell

Solid State Controls, a vendor of fan assemblies for uninterruptible
power systems, reported that an alurninum, five-wing fan blade, part
number 03-470100-00, could under certain conditions separate from its
hub. If the blade should come loose, the system could drop power to the
load, there may not be an alarm indication of loss of cooling, and a
short circuit could occur. The vendor states that about 30 nuclear power
plants are affected and recommends immediate inspection of fan blades
purchased or replaced between February 1999 and January 2002 with
replacement of loose or wobbling fan blades.

Contact:    R. Caldwell, NRR
            301-415-1243
            E-mail: rkc1@nrc.gov

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