ENS Event | |
|---|---|
05:00 May 1, 2013 | |
| Title | Part 21 Interim Report - Linear Indications/Cracks in Pressure Transmitter Flange Forging |
| Event Description | Description of the Deviation or Failure to comply that is being evaluated:
Linear indications/cracks were discovered in the flange forging on four N-E13DM pressure transmitters recently supplied by Ultra Electronics, NSPI to Omaha Public Power District (OPPD), Fort Calhoun Station FC-1-5 Plant. These transmitters with the identified indications had been received by Fort Calhoun but were not installed. Three of the four transmitters have been returned to Ultra Electronics, NSPI for evaluation and analysis. At this time, the fourth transmitter is in process of being returned for additional evaluation. Evaluation Status: Ultra Electronics, NSPI has performed an initial assessment and determined that the indication/crack penetrates the forging beyond the specified minimum wall thickness. At this time Ultra Electronics, NSPI is in the process of contracting a third party metallurgical research laboratory to assist with evaluation and root cause analysis. Ultra Electronics, NSPI will supply forging samples to the metallurgical research laboratory for analysis including material/composition characteristics as well as the structure and physical characteristics of the indications. Ultra Electronics, NSPI will continue to work with the forging vendor to determine root cause and the extent of the affected material. Completion of the Evaluation: The evaluation is expected to be completed on or before August 31, 2013 |
| Where | |
|---|---|
| Ultra Electronics, Nspi Round Rock, Texas (NRC Region 4) | |
| Organization: | Ultra Electronics, Nspi |
| Reporting | |
| 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component | |
| Time - Person (Reporting Time:+1403.95 h58.498 days <br />8.357 weeks <br />1.923 months <br />) | |
| Opened: | Adam Gaither 16:57 Jun 28, 2013 |
| NRC Officer: | Daniel Mills |
| Last Updated: | Jun 28, 2013 |
| 49155 - NRC Website | |
Ultra Electronics, Nspi with 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component | |
WEEKMONTHYEARENS 491552013-05-01T05:00:0001 May 2013 05:00:00
[Table view]10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Part 21 Interim Report - Linear Indications/Cracks in Pressure Transmitter Flange Forging 2013-05-01T05:00:00 | |