ENS 51222
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ENS Event | |
|---|---|
22:22 Jul 11, 2015 | |
| Title | Unusual Event for a Co2 Release Affecting Normal Plant Operations |
| Event Description | At 1810 [EDT], the Salem unit 1 control room received an alarm that a CO2 discharge occurred in the Diesel Fuel Oil Transfer Pump Rooms on the 84 foot elevation in the Auxiliary Building. The control room referred to the OHA [Overhead Annunciator] response procedure S1.OP-AR.ZZ.0001 for OHA A-8, 'Fire Prot CO2/Halon Disch.' The ARP [Alarm Response Procedure] directed implementation of the S1.OP-AB.Fire-0001 procedure and control room ventilation was shifted to the 'fire outside' mode of operation. The on site fire protection team responded to the area and confirmed the CO2 discharge. The [on site] fire department determined that there was no fire and no smoke in the area of the discharge. The Fire Brigade Liaison inspected the equipment and determined that there was no adverse impact to any equipment located in the vicinity of the discharge and no operational impact on the plant.
All systems responded as expected. There were no personnel injuries as a result of the discharge. Atmosphere in the area of the discharge has been verified normal and no restrictions to the area are in place. The cause of the discharge was determined to be a faulty detector. No off site response was requested and an hourly firewatch will be initiated until the detector is repaired. The licensee will notify the NRC Resident Inspector and has notified the states of Delaware and New Jersey. Notified DHS, FEMA Operations Center, and NICC and e-mailed Nuclear SSA and FEMA National Watch Center.
The Unusual Event was terminated at 2154 EDT. The licensee notified the NRC Resident Inspector and the states of Delaware and New Jersey. Notified IRD (Stapleton), R1DO (Cahill), NRR (Morris), DHS, FEMA Operations Center, and NICC and e-mailed Nuclear SSA and FEMA National Watch Center. |
| Where | |
|---|---|
| Salem New Jersey (NRC Region 1) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+-3.6 h-0.15 days <br />-0.0214 weeks <br />-0.00493 months <br />) | |
| Opened: | Mark Fiocco 18:46 Jul 11, 2015 |
| NRC Officer: | Mark Abramovitz |
| Last Updated: | Jul 11, 2015 |
| 51222 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
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