ENS 51421: Difference between revisions
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| event date = 09/23/2015 21:00 CDT | | event date = 09/23/2015 21:00 CDT | ||
| last update date = 09/24/2015 | | last update date = 09/24/2015 | ||
| title = High Pressure Coolant Injection Inoperable Due | | title = High Pressure Coolant Injection Inoperable Due to Mgu Failure | ||
| event text = During surveillance testing of the U2 HPCI [High Pressure Coolant Injection] system, the HPCI motor gear unit [MGU] was positioned from 100 percent to 75 percent demand to satisfy operability testing. The motor gear unit did not respond as system demand was returned to 100 percent. This indicated a failure of the MGU which requires declaration of inoperability of the HPCI System. This is a 14 day LCO. HPCI is a single train system and reportable under SAF 1.8 'Event or condition that could have prevented fulfillment of a safety function.' | | event text = During surveillance testing of the U2 HPCI [High Pressure Coolant Injection] system, the HPCI motor gear unit [MGU] was positioned from 100 percent to 75 percent demand to satisfy operability testing. The motor gear unit did not respond as system demand was returned to 100 percent. This indicated a failure of the MGU which requires declaration of inoperability of the HPCI System. This is a 14 day LCO. HPCI is a single train system and reportable under SAF 1.8 'Event or condition that could have prevented fulfillment of a safety function.' | ||
The licensee will be notifying the NRC Resident Inspector. | The licensee will be notifying the NRC Resident Inspector. | ||
Latest revision as of 20:46, 1 March 2018
| Where | |
|---|---|
Dresden  Illinois (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
| Time - Person (Reporting Time:+3.87 h0.161 days <br />0.023 weeks <br />0.0053 months <br />) | |
| Opened: | Jeff Simpson 05:52 Sep 24, 2015 |
| NRC Officer: | Jeff Rotton |
| Last Updated: | Sep 24, 2015 |
| 51421 - NRC Website
| |
Dresden with 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |