05000341/FIN-2015001-04
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Finding | |
|---|---|
| Title | Operation Above the Licensed Thermal Power Limit |
| Description | A finding of very low safety significance with an associated NCV of the Fermi 2 Facility Operating License (NPF43), Condition 2.C (1), Maximum Power Level, was self-revealed on March 10, 2015. Licensed reactor operators in the Control Room failed to appropriately monitor and control reactor power during a Xenon transient following manual reactivity manipulations and allowed reactor power to exceed the licensed thermal power limit for 16 minutes. Upon receiving an annunciator that alerted reactor operators of the over-power condition, they promptly reduced reactor power to below 100 percent. The licensee entered this violation into its CAP to investigate the cause and identify appropriate corrective actions. The finding was of more than minor safety significance because, if left uncorrected, it would have the potential to lead to a more significant safety concern. Specifically, operation above the licensed power limit reduced the analyzed margins to fuel cladding failure and could result in unanalyzed consequences during an initiating event. The finding was a licensee performance deficiency of very low safety significance (Green) because the inappropriate monitoring and control of reactor power during the Xenon transient did not result in exceeding the two percent reactor thermal power allowance contained in the safety analysis. Therefore, assumptions contained in the safety analysis remained bounded for this event. The inspectors determined this finding affected the cross-cutting area of human performance and the procedure adherence aspect due to the licensees failure to ensure individuals follow processes, procedures, and work instructions (IMC 0310, H.8). Specifically, the licensee did not effectively communicate expectations of procedural compliance in that licensed reactor operators did not appropriately monitor and control reactor power during a Xenon transient following manual reactivity manipulations. |
| Site: | Fermi  |
|---|---|
| Report | IR 05000341/2015001 Section 4OA3 |
| Date counted | Mar 31, 2015 (2015Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71153 |
| Inspectors (proximate) | B Kemker J Jandovitz M Kunowski P Smagacz |
| Violation of: | License Condition |
| CCA | H.8, Procedure Adherence |
| INPO aspect | WP.4 |
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Finding - Fermi - IR 05000341/2015001 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Fermi) @ 2015Q1
Self-Identified List (Fermi)
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