ENS 45753: Difference between revisions
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| event date = 03/08/2010 16:35 CST | | event date = 03/08/2010 16:35 CST | ||
| last update date = 03/08/2010 | | last update date = 03/08/2010 | ||
| title = Automatic Reactor Scram | | title = Automatic Reactor Scram on Low Reactor Water Level | ||
| event text = An 'A' reactor feed pump trip occurred and initiated a recirculation pump flow control valve runback. During the flow control valve runback, the 'A' recirculation hydraulic power unit tripped causing an incomplete runback. | | event text = An 'A' reactor feed pump trip occurred and initiated a recirculation pump flow control valve runback. During the flow control valve runback, the 'A' recirculation hydraulic power unit tripped causing an incomplete runback. | ||
Reactor water level 3 (11.4 inches) was reached which is an RPS scram setpoint and also a setpoint for Group 2 (RHR to Radwaste) and Group 3 (Shutdown Cooling Isolation). No valves isolated in these systems due to [the valves] being in their normally closed position. The lowest reactor water level reached was -28 inches wide range. | Reactor water level 3 (11.4 inches) was reached which is an RPS scram setpoint and also a setpoint for Group 2 (RHR to Radwaste) and Group 3 (Shutdown Cooling Isolation). No valves isolated in these systems due to [the valves] being in their normally closed position. The lowest reactor water level reached was -28 inches wide range. |
Latest revision as of 22:10, 1 March 2018
Where | |
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Grand Gulf ![]() Mississippi (NRC Region 4) | |
Reporting | |
10 CFR 50.72(b)(2)(iv)(B), RPS Actuation | |
Time - Person (Reporting Time:+-2.8 h-0.117 days <br />-0.0167 weeks <br />-0.00384 months <br />) | |
Opened: | Terry Holcombe 19:47 Mar 8, 2010 |
NRC Officer: | Howie Crouch |
Last Updated: | Mar 8, 2010 |
45753 - NRC Website
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