ENS 44201
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ENS Event | |
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04:00 Mar 19, 2008 | |
Title | General Electric Hitachi Cr120A Relay/Relay Coil Wire Clamp Cracking |
Event Description | Southern Nuclear Company made this notification of a potential defect in components received by its Edwin I. Hatch Nuclear Plant. The potential defect may exist in ninety-six (96) subject components: ninety-four (94) General Electric Hitachi (GEH) CR120A relays and two (2) GEH CR120A relay coils.
The wire clamps supplied with these relays and relay coils may be susceptible to cracking. The wire clamps serve to secure the wire connections to the relays and relay coils. Currently there are thirty-seven (37) CR120A relays and one (1) CR120A relay coil installed. The components not currently installed have been placed on hold. The licensee has followed the recommendations of GEH by visually inspecting all installed components for cracks. No cracks were found. The licensee will replace the clamps on one subject relay installed in the Main Control Room Environmental Control System. The clamps on the components installed in the Source Range Monitoring and Intermediate Range Monitoring instruments show no signs of cracking will be left installed as is. Replacement wire clamps will be ordered from GEH. The licensee plans to replace the clamps on the other stock components. |
Where | |
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Hatch ![]() Georgia (NRC Region 2) | |
Reporting | |
10 CFR 21.21 | |
Time - Person (Reporting Time:+1302.5 h54.271 days <br />7.753 weeks <br />1.784 months <br />) | |
Opened: | D. H. Jones 10:30 May 12, 2008 |
NRC Officer: | Pete Snyder |
Last Updated: | May 12, 2008 |
44201 - NRC Website
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Unit 1 | |
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Reactor critical | Critical |
Scram | No |
Before | Power Operation (92 %) |
After | Power Operation (92 %) |
Unit 2 | |
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Reactor critical | Critical |
Scram | No |
Before | Power Operation (57 %) |
After | Power Operation (57 %) |
Hatch ![]() | |
WEEKMONTHYEARENS 442012008-03-19T04:00:00019 March 2008 04:00:00
[Table view]10 CFR 21.21, Notification of failure to comply or existence of a defect and its evaluation General Electric Hitachi Cr120A Relay/Relay Coil Wire Clamp Cracking 2008-03-19T04:00:00 | |
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