ENS 51996: Difference between revisions
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Latest revision as of 17:16, 24 September 2017
ENS Event | |
|---|---|
15:37 Jun 8, 2016 | |
| Title | |
| Event Description | At 0800 CDT on 6/8/2016, 3-SR-3.5.1.7, 'HPCI [High Pressure Coolant Injection] Main and Booster Pump Set Developed Head and Flow Rate Test at Rated Reactor Pressure' periodic surveillance was being performed. As part of the surveillance procedure, HPCI was declared inoperable per Technical Specification (TS) Limiting Condition for Operation (LCO) 3.5.1 Emergency Core Cooling Systems (ECCS) - Operating, Condition C at 0925. At 1037, the HPCI turbine was started and a turbine trip alarm was received as well as large swings observed on the suction pressure indicator and slow turbine response. The control room operator then manually tripped the HPCI turbine due to the abnormal indications received.
HPCl is a single train safety system and this notification is being made in accordance with 10 CFR 50.72 (b)(3)(v)(D). The NRC Resident Inspector has been notified. |
| Where | |
|---|---|
| Browns Ferry Alabama (NRC Region 2) | |
| Reporting | |
| 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
| Time - Person (Reporting Time:+2.23 h0.0929 days <br />0.0133 weeks <br />0.00305 months <br />) | |
| Opened: | Todd Christensen 17:51 Jun 8, 2016 |
| NRC Officer: | Daniel Mills |
| Last Updated: | Jun 8, 2016 |
| 51996 - NRC Website
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Unit 3 | |
|---|---|
| Reactor critical | Critical |
| Scram | No |
| Before | Power Operation (100 %) |
| After | Power Operation (100 %) |
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