ENS Event | |
|---|---|
06:00 Feb 4, 2005 | |
| Title | Failure of Safety Equipment - Fixed Gauge |
| Event Description | The following information (Report # NE050003) was provided by the State of Nebraska (Julia Schmitt) via facsimile:
Operators noticed that strand line #2 was showing erratic readings that were not consistent with the other three operating molds. Operations were suspended to investigate the cause. The assistant RSOs responded and observed that the gauge had separated between the top actuator flange and the shield housing. It was determined that the gauge's lead housing had separated from the flange, leaving approximately seven inches of the source rod unshielded. There was no visible exterior damage to the flange or housing. Leak tests and surveys were performed that verified that the gauge's actuator was locked-out. The device was removed from service and placed in an onsite storage vault awaiting analysis as to the cause of the failure. The licensee reporting this malfunction is Nucor Corporation, located in Norfolk, NE 68702. The source of radiation is a fixed gauge, model number P2608-100, manufactured by Berthold, and contained 0.003 curies of Co-60. The malfunctioned equipment is a fixed gauge, model number LB300 ML, also manufactured by Berthold. Ms. Schmitt believed the radiation exposure to personnel was < 2mrem/hr, however, this has not been determined as fact. |
| Where | |
|---|---|
| Nucor Steel Norfolk, Nebraska (NRC Region 4) | |
| License number: | 07-04-01 |
| Organization: | Ne Div Of Radioactive Materials |
| Reporting | |
| Agreement State | |
| Time - Person (Reporting Time:+276 h11.5 days <br />1.643 weeks <br />0.378 months <br />) | |
| Opened: | Julia Schmitt 18:00 Feb 15, 2005 |
| NRC Officer: | John Knoke |
| Last Updated: | Feb 15, 2005 |
| 41411 - NRC Website | |
Nucor Steel with Agreement State | |
WEEKMONTHYEARENS 559132022-05-23T04:00:00023 May 2022 04:00:00
[Table view]Agreement State Source Holder Affected by Molten Metal ENS 550822020-02-24T05:00:00024 February 2020 05:00:00 Agreement State Damaged Source Holder ENS 520062016-06-13T05:00:00013 June 2016 05:00:00 Agreement State Agreement State Report - Found Radioactive Scrap Metal ENS 414112005-02-04T06:00:0004 February 2005 06:00:00 Agreement State Failure of Safety Equipment - Fixed Gauge 2022-05-23T04:00:00 | |