ENS 52154
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ENS Event | |
|---|---|
03:40 Aug 5, 2016 | |
| Title | Unanalyzed Fire Barrier |
| Event Description | At 2240 CDT on August 4, 2016, it was discovered that the floor between the cable spreading room and the plant administration building (PAB) basement is not a credited Appendix R fire barrier. Because the cable spreading room and the plant administration building are located in the same fire area, a fire in the PAB could spread to the cable spreading room requiring evacuation of the control room. The travel path used to access the Alternate Shutdown Panel following control room evacuation traverses the same fire area in the PAB. Therefore, this event is being reported under 10 CFR 50.72(b)(3)(ii) for Degraded or Unanalyzed Condition as a fire in the PAB could have the potential to impact Division 1 equipment as well as impede the Operators ability to access Division 2 safe shutdown equipment. Fire watches have been established. There is no impact to the health and safety of the public.
The NRC Resident Inspector has been notified. The licensee will notify the State of Minnesota. |
| Where | |
|---|---|
| Monticello Minnesota (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition | |
| LER: | 05000263/LER-2016-002 Regarding Inadequate Appendix R Fire Barrier Impacts Safe Shutdown Capability |
| Time - Person (Reporting Time:+2.77 h0.115 days <br />0.0165 weeks <br />0.00379 months <br />) | |
| Opened: | William Stang 06:26 Aug 5, 2016 |
| NRC Officer: | Donald Norwood |
| Last Updated: | Aug 5, 2016 |
| 52154 - 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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