ENS 40173: Difference between revisions
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| event date = 08/29/2003 10:25 EDT | | event date = 08/29/2003 10:25 EDT | ||
| last update date = 09/19/2003 | | last update date = 09/19/2003 | ||
| title = Invalid Actuation | | title = Invalid Actuation of Containment Isolation Valves | ||
| event text = On August 29th, 2003 at approximately 1025 EDT, an electrical perturbation affecting both Unit 1 & 2 at PPL Susquehanna LLC resulted in a partial isolation of Primary Containment Isolation valves on Division 1, specifically A & B Containment Radiation Monitors and the Containment Instrument Gas Purge supply valve. | | event text = On August 29th, 2003 at approximately 1025 EDT, an electrical perturbation affecting both Unit 1 & 2 at PPL Susquehanna LLC resulted in a partial isolation of Primary Containment Isolation valves on Division 1, specifically A & B Containment Radiation Monitors and the Containment Instrument Gas Purge supply valve. | ||
This event is being reported as an invalid system actuation and is reportable under 10CFR 50.73(a)(2)(iv)(A). The condition meets the criteria of 10CFR 50.73(a)(2)(iv)(B)(2) due to a general containment isolation signal that affected containment isolation valves in more than one system. This notification is being provided via 60 day optional phone call as permitted under 10CFR 50.73(a)(1) in lieu of a written LER. | This event is being reported as an invalid system actuation and is reportable under 10CFR 50.73(a)(2)(iv)(A). The condition meets the criteria of 10CFR 50.73(a)(2)(iv)(B)(2) due to a general containment isolation signal that affected containment isolation valves in more than one system. This notification is being provided via 60 day optional phone call as permitted under 10CFR 50.73(a)(1) in lieu of a written LER. | ||
Latest revision as of 22:25, 1 March 2018
| Where | |
|---|---|
Susquehanna  Pennsylvania (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.73(a)(1), Submit an LER, Invalid Actuation | |
| Time - Person (Reporting Time:+490.7 h20.446 days <br />2.921 weeks <br />0.672 months <br />) | |
| Opened: | Don E. Roland 01:07 Sep 19, 2003 |
| NRC Officer: | Steve Sandin |
| Last Updated: | Sep 19, 2003 |
| 40173 - NRC Website
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