ENS 48863: Difference between revisions
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| event date = 03/27/2013 15:30 CDT | | event date = 03/27/2013 15:30 CDT | ||
| last update date = 08/21/2013 | | last update date = 08/21/2013 | ||
| title = Part 21 Report - Foxboro Power Supply Potential Failures Due | | title = Part 21 Report - Foxboro Power Supply Potential Failures Due to Defective Tie Wraps and Holders | ||
| event text = Mr. John F. Brosemer, President of Integrated Resources, Inc., reported discovery of repeated defects in Foxboro Meter Company's N-2ARPS-A6, Style D power supplies. When manufactured, the power supplies utilized Thomas and Betts TC105A aluminum wire tie holders in random numbers and placements. As the power supplies age, the tie wrap holder adhesive degrades and the tie wraps embrittle resulting in the separation of the tie wraps and loss of holder adhesion to the power supply enclosure. This causes the wraps and holders to fall to the bottom of the enclosure which could result in shorts when the aluminum comes in contact with electronic components. In one particular power supply, all tie wrap holders in use failed and separated from the enclosure. | | event text = Mr. John F. Brosemer, President of Integrated Resources, Inc., reported discovery of repeated defects in Foxboro Meter Company's N-2ARPS-A6, Style D power supplies. When manufactured, the power supplies utilized Thomas and Betts TC105A aluminum wire tie holders in random numbers and placements. As the power supplies age, the tie wrap holder adhesive degrades and the tie wraps embrittle resulting in the separation of the tie wraps and loss of holder adhesion to the power supply enclosure. This causes the wraps and holders to fall to the bottom of the enclosure which could result in shorts when the aluminum comes in contact with electronic components. In one particular power supply, all tie wrap holders in use failed and separated from the enclosure. | ||
The power supplies are used in Foxboro SPEC-200 cabinetry that are used throughout the industry. At the time of this notification, Integrated Resources has one power supply from Three Mile Island and two power supplies from Ft. Calhoun undergoing refurbishment. Integrated Resources will be following up this telephonic notification with a written report once their internal investigation is done. | The power supplies are used in Foxboro SPEC-200 cabinetry that are used throughout the industry. At the time of this notification, Integrated Resources has one power supply from Three Mile Island and two power supplies from Ft. Calhoun undergoing refurbishment. Integrated Resources will be following up this telephonic notification with a written report once their internal investigation is done. | ||
Latest revision as of 22:00, 1 March 2018
| Where | |
|---|---|
| Invensys (Foxboro Meter Co.) Nebraska City, Nebraska (NRC Region 4) | |
| Organization: | Integrated Resources, Inc. |
| Reporting | |
| 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
| Time - Person (Reporting Time:+19.38 h0.808 days <br />0.115 weeks <br />0.0265 months <br />) | |
| Opened: | John F. Brosemer 15:53 Mar 28, 2013 |
| NRC Officer: | Howie Crouch |
| Last Updated: | Aug 21, 2013 |
| 48863 - NRC Website | |