ENS 51243
ENS Event | |
|---|---|
04:00 Jun 3, 2015 | |
| Title | Potential Part 21 - Allen Bradley Failure to Document Design Change |
| Event Description | The following information is excerpted from an email received from United Controls International:
[In] August 2014, United Controls supplied four (4) time delay relays to Omaha Public Power-Fort Calhoun Station. The subject relay was qualified in accordance with IEEE 323-74/83, IEEE 344-1975/1987 and IEEE C37.98-1987, for use in mild environment safety related applications. Per NRC Part 21 notifications, UCI was informed that the Allen Bradley relays base model 700RTC contain a Complex Programmable Logic Device (CPLD) which was unpublished. This design change could not be noticed since the external appearance of the relay and the relay part number remained the same. Hence, UCI has qualified the subject relay as solid state relay whereas the presence of the CPLD device elects the item as a digital device which can be affected by EMI/RFI noises. At this time, UCI has no sufficient information to determine whether this design change would create a Substantial Safety Hazard as it relates to the plant applications for the subject relay. Per the Nutherm Part 21 ML 1516IA230, Allen Bradley has indicated that a rolling change occurred from mid-2009 with no specific manufacturing date to distinguish between the old and the new configuration. Hence, all units manufactured during 2009 and later are suspect. If you have any questions or wish to discuss this matter or this report, please contact: Jim Garrison Engineering Manager jgarrison@unitedcontrols.com 770-496-1406 x 103 Affected facility: Omaha Public Power-Fort Calhoun Station Part Number: 700-RTC-11200U1 Quantity: 4 |
| Where | |
|---|---|
| United Controls International Norcross, Georgia (NRC Region 1) | |
| Organization: | United Controls International |
| Reporting | |
| 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component | |
| Time - Person (Reporting Time:+1140.8 h47.533 days <br />6.79 weeks <br />1.563 months <br />) | |
| Opened: | William Mallia 16:48 Jul 20, 2015 |
| NRC Officer: | Jeff Herrera |
| Last Updated: | Jul 20, 2015 |
| 51243 - NRC Website | |
United Controls International with 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component | |
WEEKMONTHYEARENS 562932022-09-07T17:00:0007 September 2022 17:00:00
[Table view]10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Part 21 - Power Supply Failures ENS 563882022-09-07T05:00:0007 September 2022 05:00:00 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Part 21 - Deviation to Qualified Design ENS 562092022-09-07T04:00:0007 September 2022 04:00:00 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Part 21 - Primary/Secondary Power Supply Failures ENS 512432015-06-03T04:00:0003 June 2015 04:00:00 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Potential Part 21 - Allen Bradley Failure to Document Design Change ENS 509352015-01-30T04:00:00030 January 2015 04:00:00 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Part-21 Notification - Sense and Transfer Module Resistive Short ENS 503312014-06-04T04:00:0004 June 2014 04:00:00 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Part 21 Interim Report - Temperature Switch Set Points Out of Calibration ENS 500132014-03-25T04:00:00025 March 2014 04:00:00 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Part 21 - Potential Defect in General Electric Sb1 Switches and Hea Relays ENS 499402014-03-21T04:00:00021 March 2014 04:00:00 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Part 21 - Sbm Selector Switches Contact Assembly Unplanned Manufacturing Change 2022-09-07T05:00:00 | |