ENS Event | |
|---|---|
23:05 Nov 1, 2006 | |
| Title | Unit Shutdown Required Due to Service Water Leak Involving a Containment Air Cooler |
| Event Description | On November 1, 2006, at 1530 hours0.0177 days <br />0.425 hours <br />0.00253 weeks <br />5.82165e-4 months <br /> EST, a service water leak was identified in the cooling coil of Containment Air Cooler VHX-4. While this containment air cooler has no safety function for containment cooling, the breached cooling coil represents an inoperable containment boundary.
In accordance with Technical Specification (T.S.) 3.6.1.B1&2, a shutdown was initiated at 1805 hours0.0209 days <br />0.501 hours <br />0.00298 weeks <br />6.868025e-4 months <br /> EST, following expiration of the completion time of 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> for restoring containment to operable per T.S. 3.6.1.A.1. The licensee anticipates having the unit in mode 3 Hot Standby by 2205 hours0.0255 days <br />0.613 hours <br />0.00365 weeks <br />8.390025e-4 months <br /> EST, at which time an evaluation involving extent of condition for the required repairs will be performed. The leak is characterized at this time as 300 ml/minute. The licensee informed the NRC Resident Inspector. |
| Where | |
|---|---|
Palisades  Michigan (NRC Region 3) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown | |
| Time - Person (Reporting Time:+-4.42 h-0.184 days <br />-0.0263 weeks <br />-0.00605 months <br />) | |
| Opened: | Dan Malone 18:40 Nov 1, 2006 |
| NRC Officer: | Steve Sandin |
| Last Updated: | Nov 1, 2006 |
| 42954 - NRC Website
Loading map... | |
Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (80 %) |
WEEKMONTHYEARENS 490022013-05-05T05:12:0005 May 2013 05:12:00
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