ENS 41528: Difference between revisions
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| event date = 03/24/2005 15:08 CST | | event date = 03/24/2005 15:08 CST | ||
| last update date = 03/26/2005 | | last update date = 03/26/2005 | ||
| title = Unanalyzed Condition Relating | | title = Unanalyzed Condition Relating to the Integrity of the Diesel Generator Exhaust Stacks During a Tornado | ||
| event text = The following information was obtained from the licensee via facsimile (licensee text in quotes): | | event text = The following information was obtained from the licensee via facsimile (licensee text in quotes): | ||
While evaluating the capability of the plant to withstand a tornado it was identified that the Diesel Generator Exhaust Stacks may not maintain their design structural integrity. This would place the plant in an unanalyzed condition, however expert engineering judgment is that the damage to the Emergency Diesel Generator Exhausts would not reduce the capacity below that required to ensure decay heat removal. Currently the plant is in refueling shutdown and the Emergency Diesel Generators are not required to be operable per Technical Specifications. This condition will be corrected prior to plant startup. Power is still being supplied to the plant from the Reserve and Tertiary Auxiliary Transformers. This event was determined to be reportable per 10CFR50.73(a)(2)(ii)(B) and further review of the reporting criteria identified that if there is any doubt, this condition should be reported under 10CFR50.72(b)(3)(ii)(B). | While evaluating the capability of the plant to withstand a tornado it was identified that the Diesel Generator Exhaust Stacks may not maintain their design structural integrity. This would place the plant in an unanalyzed condition, however expert engineering judgment is that the damage to the Emergency Diesel Generator Exhausts would not reduce the capacity below that required to ensure decay heat removal. Currently the plant is in refueling shutdown and the Emergency Diesel Generators are not required to be operable per Technical Specifications. This condition will be corrected prior to plant startup. Power is still being supplied to the plant from the Reserve and Tertiary Auxiliary Transformers. This event was determined to be reportable per 10CFR50.73(a)(2)(ii)(B) and further review of the reporting criteria identified that if there is any doubt, this condition should be reported under 10CFR50.72(b)(3)(ii)(B). | ||
Latest revision as of 22:21, 1 March 2018
| Where | |
|---|---|
Kewaunee  Wisconsin (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition | |
| Time - Person (Reporting Time:+29.58 h1.233 days <br />0.176 weeks <br />0.0405 months <br />) | |
| Opened: | David Karst 02:43 Mar 26, 2005 |
| NRC Officer: | Bill Huffman |
| Last Updated: | Mar 26, 2005 |
| 41528 - NRC Website
| |