ENS 43430: Difference between revisions
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| event date = 06/19/2007 06:35 CDT | | event date = 06/19/2007 06:35 CDT | ||
| last update date = 06/19/2007 | | last update date = 06/19/2007 | ||
| title = Tech Spec Required Shutdown Due | | title = Tech Spec Required Shutdown Due to Instrument Line Steam Leak | ||
| event text = During performance of a plant shut down personnel entered the Drywell to investigate a steam leak. At 0635 hours, personnel identified steam leaking from a flexible hose instrument line (approximately 1" diameter) that is welded to an elbow tap on the C Main Steam line and concluded that the leak constitutes pressure boundary leakage. This required entry into TS 3.4.5, Condition C. This requires that the unit be in Mode 3 in 12 hours and Mode 4 in 36 hours, which is a TS required shutdown. | | event text = During performance of a plant shut down personnel entered the Drywell to investigate a steam leak. At 0635 hours, personnel identified steam leaking from a flexible hose instrument line (approximately 1" diameter) that is welded to an elbow tap on the C Main Steam line and concluded that the leak constitutes pressure boundary leakage. This required entry into TS 3.4.5, Condition C. This requires that the unit be in Mode 3 in 12 hours and Mode 4 in 36 hours, which is a TS required shutdown. | ||
The station has determined that this event is reportable under the provisions of: 10 CFR 50.72 (b)(2)(i) for the plant shutdown required by Technical Specifications, as a 4-hour notification; 10 CFR 50.72 (b)(3)(ii)(A) as an event or condition that resulted in the condition of the nuclear power plant, including its principal safety barriers being seriously degraded, as an 8-hour notification. | The station has determined that this event is reportable under the provisions of: 10 CFR 50.72 (b)(2)(i) for the plant shutdown required by Technical Specifications, as a 4-hour notification; 10 CFR 50.72 (b)(3)(ii)(A) as an event or condition that resulted in the condition of the nuclear power plant, including its principal safety barriers being seriously degraded, as an 8-hour notification. | ||
Latest revision as of 22:16, 1 March 2018
| Where | |
|---|---|
Clinton  Illinois (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded | |
| Time - Person (Reporting Time:+-0.43 h-0.0179 days <br />-0.00256 weeks <br />-5.89014e-4 months <br />) | |
| Opened: | Ron Frantz 11:09 Jun 19, 2007 |
| NRC Officer: | Bill Huffman |
| Last Updated: | Jun 19, 2007 |
| 43430 - NRC Website
| |
Clinton with 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown, 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded | |