United States Nuclear Regulatory Commission - Protecting People and the Environment

Morning Report for May 10, 2005

Headquarters Daily Report

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Part 21 2005-0017 - Reporting of Defects and Non-Compliance: Woodward Governor "Compensating" EG Series Actuators

Licensee/Facility:


ENGINE SYSTEMS INC.

Dockets:

License No:
Notification:

MR Number: H-2005-0014
Date: 04/12/2005


Source Document: Letter

Discussion:

Part 21 2005-0017 - Reporting of Defects and Non-Compliance: Woodward Governor "Compensating" EG Series Actuators

COMPONENT: Woodward Governor "Compensating" EG Series Actuators Types: EG-R, EG-3C, EG-10C, EGB-2C, EGB-10C, EGB-13C, EGB-29C, EGB-35C & EGB-50C

SUMMARY: Engine Systems Inc. (ESI) has concluded an investigation of a condition reported by the Perry Power Plant with a Woodward Governor EGB-35C governor/actuator. On 2/7/05, the Perry Division 2 EDG failed to hot restart following a 24 hour load endurance run. The failed restart was determined to be a result of a shift in the null voltage setting of the EGB governor to a value of approximately 0 volts. The specification for the null voltage setting is -0.9 to -0.7 volts. The governor is a Woodward Governor type EGB-35C, part number 9903-013, serial number 2261295 (Perry stock code number 13833485). With the null voltage at 0 volts, the actuator did not go to maximum fuel during engine cranking and therefore the engine did not start. Supplier's complete evaluation report is available in ADAMS with accession number ML051110087.

AFFECTED USERS: This notification is applicable to all users with Woodward type EG "compensating" actuators. These systems will only utilize EGA or EGM controls.

Accession Numbers:

Accession No Accession Date
ML051110087 04/12/2005

Contacts:

Name Office Abbrev Phone No E-Mail
TABATABAI, OMID NRR (301) 415-6616 OTY@nrc.gov


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REGION I

Part 21 2005-0016 - Cutler-Hammer A200 NEMA Size 1 Starters

Licensee/Facility:


SPECTRUM TECHNOLOGIES
SCHENECTADY, New York
Dockets:

License No:
Notification:

MR Number: H-2005-0013
Date: 04/18/2005


Reviewer: HODGE, VERNON

Discussion:

Part 21 2005-0016 - Cutler-Hammer A200 NEMA Size 1 Starters

Spectrum Technologies, a supplier of electrical products, reported an open coil in a Cutler-Hammer A200 NEMA Size 1 starter installed in heater circuitry for a boric acid storage tank at the Ginna nuclear power plant. Testing at the Ginna Materials Laboratory revealed that the failure resulted from a manufacturing defect in the epoxy surrounding the coil. The open circuit was caused when the epoxy cracked at the defect and broke a wire running through the epoxy and connecting the two coils.

In March 2002, Spectrum Technologies provided 20 of these starters as Class 1E safety-related components to the Ginna nuclear power plant. The supplier had purchased the starters as commercial grade items from Cutler-Hammer and dedicated them per Method 1 of the guidance document EPRI NP5652, "Special Tests and Inspections." In a subsequent phone call, the supplier stated that no other nuclear power plants were supplied these products.

Spectrum Technologies stated that they provided relevant information to Cutler-Hammer for evaluation, requesting a report on cause of the condition, scope of the problem, and measures to prevent recurrence. The request is still in process.

In November 2002, Spectrum Technologies submitted a Part 21 report on these same components, also involving Ginna (Part 21 No. 2002-33-0, ADAMS Accession No. ML023330442). In that report, the problem was an open phase in lot C010427 that was attributed to mismachining of the starter plungers.

Accession Numbers:

Accession No Accession Date
ML051100285 04/18/2005

Contacts:

Name Office Abbrev Phone No E-Mail
HODGE, VERNON NRR (301) 415-1861 CVH@nrc.gov
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