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At 1904 Central Time 13 Jan 2015, Dresden … At 1904 Central Time 13 Jan 2015, Dresden Unit 2 was manually scrammed by Operators due to a Reactor Water Level transient.</br>All rods inserted to their full-in positions.</br>All systems operated as expected.</br>Reactor vessel inventory and pressure are being maintained in normal control bands.</br>The source of the transient was a failure of both controllers in the Feedwater Level Control system. Cause of the failure is under investigation.</br>This condition is being reported pursuant to 10 CFR 50.72(b)(2)(iv)(B), any event or condition that results in actuation of the reactor protection system (R) when the reactor is critical.</br>There was no on-going work or testing during this time which could be attributed to the failure of the level controllers. Unit 2 is in a normal post scram electrical line-up and maintaining pressure and temperature. RHR cooling is available if required. Unit 3 was unaffected by this transient.</br>The licensee informed the NRC Resident Inspector.ensee informed the NRC Resident Inspector. +
01:04:00, 14 January 2015 +
50,733 +
22:10:00, 13 January 2015 +
01:04:00, 14 January 2015 +
At 1904 Central Time 13 Jan 2015, Dresden … At 1904 Central Time 13 Jan 2015, Dresden Unit 2 was manually scrammed by Operators due to a Reactor Water Level transient.</br>All rods inserted to their full-in positions.</br>All systems operated as expected.</br>Reactor vessel inventory and pressure are being maintained in normal control bands.</br>The source of the transient was a failure of both controllers in the Feedwater Level Control system. Cause of the failure is under investigation.</br>This condition is being reported pursuant to 10 CFR 50.72(b)(2)(iv)(B), any event or condition that results in actuation of the reactor protection system (R) when the reactor is critical.</br>There was no on-going work or testing during this time which could be attributed to the failure of the level controllers. Unit 2 is in a normal post scram electrical line-up and maintaining pressure and temperature. RHR cooling is available if required. Unit 3 was unaffected by this transient.</br>The licensee informed the NRC Resident Inspector.ensee informed the NRC Resident Inspector. +
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