ENS 46924: Difference between revisions
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| event date = 09/28/2010 EDT | | event date = 09/28/2010 EDT | ||
| last update date = 07/15/2011 | | last update date = 07/15/2011 | ||
| title = Possible Deficiency | | title = Possible Deficiency in Environmental Testing of Limitorque Geared Limit Switch for Inside Containment | ||
| event text = The following is a summary of a Part 21 fax notification received from Flowserve-Limitorque Actuators: | | event text = The following is a summary of a Part 21 fax notification received from Flowserve-Limitorque Actuators: | ||
This Part 21 evaluation is for Geared Limit Switch - Nylon Bearing Retainer Cage. Flowserve has provided the NRC an interim report that provides information concerning an evaluation that is being performed by Flowserve - Limitorque regarding a possible deficiency in previous EQ test programs which qualified Limitorque SMB-000 & 00 actuators to IEEE-382 requirements for inside containment service. An investigation to date has revealed that the non-metallic retainer cage material of the radial ball bearing may not have been properly considered when determining thermal aging requirements during EQ testing. | This Part 21 evaluation is for Geared Limit Switch - Nylon Bearing Retainer Cage. Flowserve has provided the NRC an interim report that provides information concerning an evaluation that is being performed by Flowserve - Limitorque regarding a possible deficiency in previous EQ test programs which qualified Limitorque SMB-000 & 00 actuators to IEEE-382 requirements for inside containment service. An investigation to date has revealed that the non-metallic retainer cage material of the radial ball bearing may not have been properly considered when determining thermal aging requirements during EQ testing. |
Latest revision as of 22:06, 1 March 2018
Where | |
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Flowserve Limitorque Actuators Lynchburg, Virginia (NRC Region 1) | |
Organization: | Flowserve Limitorque Actuators |
Reporting | |
10 CFR 21.21 | |
Time - Person (Reporting Time:+5964.5 h248.521 days <br />35.503 weeks <br />8.17 months <br />) | |
Opened: | Jeff Mcconkey 16:30 Jun 3, 2011 |
NRC Officer: | Bill Huffman |
Last Updated: | Jul 15, 2011 |
46924 - NRC Website | |