ENS Event | |
|---|---|
10:18 Apr 8, 2014 | |
| Title | Shutdown Action Initiated Because Hpci and Rcic Were Simultaneously Inoperable |
| Event Description | U1 entered Technical Specification 3.0.3, and initiated actions to reduce power via control rod insertion in preparations to enter startup within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />. Entry into Tech Spec 3.0.3 was a result of both HPCI and RCIC injection systems being inoperable at the same time.
During startup from the U1 refueling outage, RCIC and HPCI full flow testing was unable to be completed at rated reactor pressure prior to the expiration of the 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> allowance per Tech Spec Surveillances 4.7.3.b* and 4.5.1.b.3** respectively. This occurred due to testing issues encountered while attempting to perform the rated pressure pump valve and flow tests. U1 HPCI testing was completed satisfactorily at 0830, and HPCI was restored to operable. Plant shutdown was terminated at 0830 [EDT] as conditions for 3.0.3 no longer existed. The licensee will notify the NRC Resident Inspector. |
| Where | |
|---|---|
Limerick  Pennsylvania (NRC Region 1) | |
| Reporting | |
| 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown | |
| Time - Person (Reporting Time:+-0.55 h-0.0229 days <br />-0.00327 weeks <br />-7.5339e-4 months <br />) | |
| Opened: | Dan Williamson 09:45 Apr 8, 2014 |
| NRC Officer: | Pete Snyder |
| Last Updated: | Apr 8, 2014 |
| 50007 - NRC Website
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Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (17 %) |
| After | Power Operation (17 %) |
WEEKMONTHYEARENS 518092016-03-21T01:54:00021 March 2016 01:54:00
[Table view]10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown, 10 CFR 50.72(b)(3)(ii)(A), Seriously Degraded Technical Specification (Ts) Required Shutdown Due to Pressure Boundary Leakage ENS 500072014-04-08T10:18:0008 April 2014 10:18:00 10 CFR 50.72(b)(2)(i), Tech Spec Required Shutdown Shutdown Action Initiated Because Hpci and Rcic Were Simultaneously Inoperable 2016-03-21T01:54:00 | |