ENS 53121
ENS Event | |
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06:00 Oct 18, 2017 | |
Title | Part 21 - Deviation in Original Qualification Testing of Sor Safety Related Switches |
Event Description | The following is a excerpt from a report received via email:
"On October 18, 2017 a deviation in the original qualification testing of SOR safety-related switches was discovered by a NRC vendor inspection conducted from October 16-20, 2017. SOR continues to evaluate those items cited by NON 99900824/2017-201-01 Items 1 through 3 and other effects on safety related components identified by SOR. The qualification test report was written in 1992. Due to the age of the report, SOR continues to retrieve records and consult contracted sources. The evaluation is expected to be completed as soon as possible or by February 27, 2018. If you have any questions regarding this matter, please contact: Mike Bequette, Vice President of Engineering Email: mbequette@sorinc.com Tel 913-956-3040
The following is an excerpt from a report received via email: SOR has identified the following reportable deviations: The Test Report did not account for all [Measuring and Test Equipment] uncertainties. The following are affected: -Qualified Life -LOCA [Loss of Coolant Accident] profile -HELB1 [High Energy Line Break] profile -HELB2 profile During qualification testing, observed repeatability in excess of 1 percent of span was not adequately addressed for some models. The following will be affected: -Vacuum switches (post LOCA only) -Temperature switches The Test Report presents data that is intended to provide a means to calculate reductions in qualified life depending on the conditions of the end use. However, there is a risk that this information could be overlooked by the end user. Following are the potential contributing factors to qualified life: -Temperature rise due to electrical load on switch element -Temperature rise on direct mount temperature switches due to elevated process temperature SOR has conducted or is conducting the following corrective actions: -Provided details in this report regarding the NQ models strings and non-standard models potentially affected -Identified the contact list of customers potentially affected by this deviation within this notification -Notifying the utilities as indicated with a copy of this notification attached targeting completion by February 8, 2018 -Revise and update test report 9058-102 to revision 3 targeting completion and availability by February 28, 2018 Notified R1DO (Powell), R2DO (Heisserer), R3DO (Duncan), R4DO (Deese), and Part 21 Group (via email). |
Where | |
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Sor Measurement And Control Lenexa, Kansas (NRC Region 4) | |
Organization: | Sor Measurement And Control |
Reporting | |
10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect | |
Time - Person (Reporting Time:+1403.03 h58.46 days <br />8.351 weeks <br />1.922 months <br />) | |
Opened: | Melanie Dirks 18:02 Dec 15, 2017 |
NRC Officer: | Jeff Herrera |
Last Updated: | Feb 5, 2018 |
53121 - NRC Website | |
Sor Measurement And Control with 10 CFR 21.21(d)(3)(i), Failure to Comply or Defect, 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component | |
WEEKMONTHYEARENS 531212017-10-18T06:00:00018 October 2017 06:00:00
[Table view]10 CFR 21.21(d)(3)(i), Failure to Comply or Defect, 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Part 21 - Deviation in Original Qualification Testing of Sor Safety Related Switches ENS 513632015-09-02T05:00:0002 September 2015 05:00:00 10 CFR 21.21(a)(2), Interim Report for Comply or Defect in Component Part-21 Report - Nutherm Irradiation Certification with Insufficient Margin 2017-10-18T06:00:00 | |