Morning Report for April 1, 2005

Headquarters Daily Report

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Part 21 2005-0012 - Cutler-Hammer Freedom Series Model C306 Thermal Overload Relays

Licensee/Facility: VOGTLE FRAMATOME ANP Dockets: License No:

Notification: MR Number: H-2005-0011 Date: 03/02/2005

Source Document: Letter

Reviewer: Vern Hodge

Discussion:

Part 21 2005-0012-00 - Cutler-Hammer Freedom Series Model C306 Thermal Overload Relays

Framatome ANP, a supplier of electrical products for nuclear power plants, reported tripping problems with Cutler-Hammer Freedom Series Model C306 Thermal Overload Relays and Heater Packs. At Vogtle, these components are used in some applications as containment penetration conductor primary protection. It is necessary in such applications that all three phases trip properly. During pre-installation testing of several thermal overload relays with different model heater packs, instances were found where single and multiple overload relay phases would trip either early, late, or not at all.

The licensee is continuing work with Framatome to evaluate the deviation to fully characterize the issue. They are currently reviewing the Vogtle pre-installation testing program for these components to determine if a manufacturing defect exists. This evaluation is expected to be completed by April 29, 2005.

Accession Numbers:

Accession No	Accession Date
ML050630275	03/02/2005

Contacts:

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