ENS 44124
ENS Event | |
|---|---|
18:40 Apr 5, 2008 | |
| Title | Unusual Event Reported After-The- Fact Due to a Fire Onsite |
| Event Description | Rancho Seco is a defueled reactor. All fuel is in the Rancho Seco ISFSI.
During decommissioning operations in the reactor building, a debris fire occurred while the contractor was cutting rebar during the removal of interior concrete. Assorted trash and combustible materials were ignited. The building was evacuated per procedures and onsite SMUD staff and contractors brought the fire under control utilizing available fire suppression equipment after several minutes and the fire was deemed extinguished at 1340 hours0.0155 days <br />0.372 hours <br />0.00222 weeks <br />5.0987e-4 months <br />, 4/5/08. No injuries occurred. All weekend work operations were ceased and a fire watch was established. A review of the incident occurred and measures to prevent future fires were employed. Decommissioning work resumed Monday, 4/7/08. As part of the After Action Review it was determined official notification to response and regulatory agencies still needed to be made. No detectable airborne contamination occurred. No contaminated personnel occurred. The fire was detected in destruction debris under a pile of concrete rubble in the reactor building. The fire was initially extinguished at 1045 PDT by onsite personnel. The fire reflashed two additional times and was extinguished until it was determined to by completely extinguished at 1340 PDT on 04/05/08 and the licensee terminated the Unusual Event. The event was declared and logged by the ISFSI Technician on 04/05/08, who is also the onsite Emergency Coordinator when an emergency is declared. It was discovered on the morning of 04/07/08 that the emergency declaration was made and logged on 04/05/08 at 1140 PDT, but no offsite regulatory notifications had been made. The licensee notified the local NRC Inspector (Garcia) and Region 4 (Keller). The licensee will be notifying the state and local emergency response organizations. |
| Where | |
|---|---|
| Rancho Seco California (NRC Region 4) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration | |
| Time - Person (Reporting Time:+48.02 h2.001 days <br />0.286 weeks <br />0.0658 months <br />) | |
| Opened: | Steve Redeker 18:41 Apr 7, 2008 |
| NRC Officer: | Jeff Rotton |
| Last Updated: | Apr 7, 2008 |
| 44124 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Not Critical |
| Scram | No |
| Before | Decommissioned (0 %) |
| After | Decommissioned (0 %) |
Rancho Seco with 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | |
WEEKMONTHYEARENS 441242008-04-05T18:40:0005 April 2008 18:40:00
[Table view]10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Reported After-The- Fact Due to a Fire Onsite 2008-04-05T18:40:00 | |