ENS 49465: Difference between revisions
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| event date = 10/23/2013 06:20 EDT | | event date = 10/23/2013 06:20 EDT | ||
| last update date = 10/23/2013 | | last update date = 10/23/2013 | ||
| title = Reactor Building Differential Pressure Less | | title = Reactor Building Differential Pressure Less than Required by Technical Specifications | ||
| event text = On October 23, 2013 at 0620, Susquehanna Steam Electric Station operators observed secondary containment differential pressure was at negative 0.17 inches water gauge for Zone II (Unit 2 Reactor Building). Tech Spec Secondary Containment Operability requires a negative pressure of at least 0.25 inches water gauge. Zone I (Unit 1 Reactor Building) and III (Common Refuel Floor Area) ventilation remained in service and stable. | | event text = On October 23, 2013 at 0620, Susquehanna Steam Electric Station operators observed secondary containment differential pressure was at negative 0.17 inches water gauge for Zone II (Unit 2 Reactor Building). Tech Spec Secondary Containment Operability requires a negative pressure of at least 0.25 inches water gauge. Zone I (Unit 1 Reactor Building) and III (Common Refuel Floor Area) ventilation remained in service and stable. | ||
Zone II differential pressure was restored to within the required band by manual damper adjustment in about 15 minutes and was verified to be stable. LCO 3.6.4.1 was entered for both units at 0620 and exited at 0635. | Zone II differential pressure was restored to within the required band by manual damper adjustment in about 15 minutes and was verified to be stable. LCO 3.6.4.1 was entered for both units at 0620 and exited at 0635. | ||
Latest revision as of 21:52, 1 March 2018
| Where | |
|---|---|
Susquehanna  Pennsylvania (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material | |
| Time - Person (Reporting Time:+0 h0 days <br />0 weeks <br />0 months <br />) | |
| Opened: | Darvin Duttry 10:20 Oct 23, 2013 |
| NRC Officer: | Bill Huffman |
| Last Updated: | Oct 23, 2013 |
| 49465 - NRC Website
| |
Susquehanna with 10 CFR 50.72(b)(3)(v)(C), Loss of Safety Function - Release of Radioactive Material | |