ENS 52248
ENS Event | |
|---|---|
16:05 Sep 19, 2016 | |
| Title | 10 Cfr Part 21 Notification - Joslyn Clark Overload Heater Element Part Number 2455 |
| Event Description | This is a non-emergency facsimile notification required by 10 CPR 21.21(d)(3)(i). A written notification in accordance with 10 CFR 21.21(d)(3)(ii) will be provided within 30 days.
Duke Energy McGuire Nuclear Station (McGuire) has determined there is evidence of a departure from technical requirements, a Deviation, associated with Joslyn Clark overload heater element Part Number (PIN) 2455. This part was procured in accordance with the Duke Energy Commercial Grade Program (CGP) and dedicated for use in safety related applications. Three of 18 overload heater elements, purchased as a lot, had insufficient top weld material. One failed in-service during a post maintenance test, the second and third failed during a visual and mechanical inspection. An extent of condition review inspected over 500 similar Joslyn Clark overload heater elements. No other inventory was found with a top weld issue. These overload heater elements are used in motor starters for the Emergency Diesel Generator (EDG) ventilation fans. This condition was discovered during post maintenance testing of the 2A EDG on July 27, 2016. None of the suspect overload heater elements were installed in Operable EDG ventilation fan motor starters. The dedicated overload heater elements, from this lot, were not transferred or sold to any third party customers. Specialty Product Technologies, manufacturer of the Joslyn Clark overload heater elements, has been notified of the deviation and is investigating their welding process. The Evaluation of the deviation determined that a Substantial Safety Hazard would have been created if the overload heater elements were installed and left uncorrected. The NRC Senior Resident Inspector has been notified. |
| Where | |
|---|---|
Mcguire  North Carolina (NRC Region 2) | |
| Reporting | |
| 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
| Time - Person (Reporting Time:+-3.73 h-0.155 days <br />-0.0222 weeks <br />-0.00511 months <br />) | |
| Opened: | Tony Cook 12:21 Sep 19, 2016 |
| NRC Officer: | Steve Sandin |
| Last Updated: | Sep 19, 2016 |
| 52248 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
Unit 2 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 522482016-09-19T16:05:00019 September 2016 16:05:00
[Table view]10 CFR 21.21(d)(3)(i), Failure to Comply or Defect 10 Cfr Part 21 Notification - Joslyn Clark Overload Heater Element Part Number 2455 2016-09-19T16:05:00 | |