ENS Event | |
|---|---|
05:00 Sep 14, 2012 | |
| Title | Part 21 - an Operating Mechanism Front Cover Failed During Licensee Receipt Inspection |
| Event Description | The following information was received by facsimile:
[ABB, Inc. provided] notification of a failure to comply with specifications associated with an operating mechanism front cover P/N 707939A00 used in low voltage electrically operated K-Line circuit breakers. A single occurrence of a newly manufactured circuit breaker failure to close was noted during Next Era Energy Seabrook Station receiving inspection supported by an ABB Medium Voltage Service Field Service Engineer. This circuit breaker was set up and tested satisfactorily during ABB cycle testing, inspection and commercial grade dedication prior to shipping. It was noted during the Seabrook receiving inspection that the control device plunger and secondary close latch were misaligned. Replacement of the operating mechanism front cover improved this alignment and the circuit breaker receipt inspection was completed satisfactorily. Inspection of the subject operating mechanism front cover indicates cause of the misalignment is due to incorrect hole locations for mounting the control device. This operating mechanism front cover was manufactured by Accutrex Products, Inc., an ABB approved vendor. Identification of the Subject component: ABB part numbers 707939A00 and 707939B00 operating mechanism covers. These covers are used in operating mechanisms for the K-Line electrically operated circuit breakers rated 2000 amps and below. Because of the large potential variety of usages of the affected circuit breakers, ABB (Medium Voltage Service) cannot determine if the potential for a substantial safety hazard exists at any licensee's facility if control device plunger and secondary close latch are misaligned. It is recommended the Licensees determine if the circuit breaker control device plunger and secondary close latch are misaligned at the next convenient maintenance opportunity defined in the ABB K-Line circuit breaker Information Bulletin. |
| Where | |
|---|---|
| Accutrex Products, Inc. Florence, South Carolina (NRC Region 1) | |
| Organization: | Abb Inc. (Medium Voltage Service) |
| Reporting | |
| 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
| Time - Person (Reporting Time:+1328.92 h55.372 days <br />7.91 weeks <br />1.82 months <br />) | |
| Opened: | David Brown 14:55 Nov 8, 2012 |
| NRC Officer: | Howie Crouch |
| Last Updated: | Nov 8, 2012 |
| 48493 - NRC Website | |
Accutrex Products, Inc. with 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
WEEKMONTHYEARENS 484932012-09-14T05:00:00014 September 2012 05:00:00
[Table view]10 CFR 21.21(d)(3)(i), Failure to Comply or Defect Part 21 - an Operating Mechanism Front Cover Failed During Licensee Receipt Inspection 2012-09-14T05:00:00 | |