ENS 44703
ENS Event | |
|---|---|
02:10 Dec 8, 2008 | |
| Title | Inadvertent Edg Start |
| Event Description | On 12/7/08 at 2010 CST, Emergency Diesel Generator 2 was started manually from its local control cabinet. The diesel started and operated as designed upon operation of the local Emergency Start Push button. This was an inadvertent start of the diesel during an alarm test on the local engine panel. The alarm test and emergency start push buttons are in close proximity and of similar design and color. The diesel has since been shutdown and returned to a standby condition. The Emergency Diesel Generator remains capable of performing its designed function and was considered operable throughout the evolution. Therefore this report is being made in reference to 10CFR 50.72(b)(3)(iv)(A) .
The licensee notified the NRC Resident Inspector.
On 12/7/2008, Fort Calhoun reported an inadvertent start of a diesel generator (event Number 44703). Based on a detailed review of NUREG-1022, this event has been determined not to be reportable under 10 CFR 50.72(b)(3)(iv)(A) . As reported, the diesel generator was not intentionally manually started by the operator. Therefore, this event was an invalid actuation of the safety system and this notification is being retracted. An appropriate report will be forthcoming as required by 10CFR50.73(a)(2)(iv)(A) and 10CFR50.73(a)(1). The licensee notified the NRC Resident Inspector. Notified the R4DO (Cain).
As allowed by 10 CFR 50.73(a)(1), the following information is provided: On December 7, 2008, an equipment operator inadvertently started emergency diesel generator 1 using the local Emergency Start push button. The operator was distracted and failed to apply appropriate self checking. This report is being made under 10 CFR50.73(a)(2)(iv)(A): a) The train that was actuated was diesel generator train 2. b) The train actuation was complete. The diesel started and operated as designed. The associated emergency bus was not deenergized so the diesel did not connect to the bus. c) As previously noted, the diesel started and functioned successfully for the plant conditions at the time. The licensee notified the NRC Resident Inspector. Notified the R4DO (Farnholtz). |
| Where | |
|---|---|
Ft Calhoun  Nebraska (NRC Region 4) | |
| Reporting | |
| 10 CFR 50.73(a)(1), Submit an LER, Invalid Actuation | |
| Time - Person (Reporting Time:+-2.3 h-0.0958 days <br />-0.0137 weeks <br />-0.00315 months <br />) | |
| Opened: | Ramon Peter 23:52 Dec 7, 2008 |
| NRC Officer: | Joe O'Hara |
| Last Updated: | Jan 23, 2009 |
| 44703 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
WEEKMONTHYEARENS 470352011-05-10T09:30:00010 May 2011 09:30:00
[Table view]10 CFR 50.73(a)(1), Submit an LER 60 Day Report - Emergency Diesel Generator Started Due to Invalid Signal ENS 447032008-12-08T02:10:0008 December 2008 02:10:00 10 CFR 50.73(a)(1), Submit an LER Inadvertent Edg Start 2011-05-10T09:30:00 | |