ENS 45992
ENS Event | |
|---|---|
18:12 Jun 9, 2010 | |
| Title | Unusual Event Declared Due to Toxic Gas/Chemical Spill in the Protected Area |
| Event Description | Toxic gas in the Owner Controlled Area that adversely affects normal operations.
The licensee declared an Unusual Event under EAL HU3.1 at 1112 PDT. During sodium hydroxide (NaOH) transfer operations on site, a drain valve leak occurred in the condensate polisher buttress area. Onsite personnel responded and stopped the leak. There were no injuries to personnel, no equipment damage and no offsite assistance required. The licensee has notified the NRC Resident Inspector.
Responder access to area has been restored. Approximately 5 gallons of NaOH have been contained. NOUE exit criteria will be that normal access to the polisher buttress is restored. The licensee has notified the NRC Resident Inspector. Notified IRD (Gott), NRR EO (Thorp) and R4DO (Powers).
The licensee has terminated from the Unusual Event at 1241 PDT. Normal access to all plant areas has been restored. Notified IRD (Gott), NRR EO (Thorp), R4DO (Powers), DHS (Kettles) and FEMA (O'Connel). |
| Where | |
|---|---|
| Diablo Canyon California (NRC Region 4) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+-3.7 h-0.154 days <br />-0.022 weeks <br />-0.00507 months <br />) | |
| Opened: | Brian Sizemore 14:30 Jun 9, 2010 |
| NRC Officer: | Howie Crouch |
| Last Updated: | Jun 9, 2010 |
| 45992 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 528762017-07-28T19:06:00028 July 2017 19:06:00
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