Junk Plant Waterford and Severe Continued Capacity Factor Problem With Entergy's Southern Fleet.

My bad, the DGs operated as designed. It would be a blackout if the DGs didn't startup. They just lost off site power...depended on internal power.

Junk Plant Waterford and Severe Continued Capacity Factor Problem With Entergy's Southern Fleet.

The idea this didn't get into a anticipatory ALERT is ridiculous. Something is wrong with the Emergency Classification system.

A LOOP is a big deal. Can you even imagine this in a Cat 4 hurricane.  

The isobus leak is a common issue coming from poor maintenance. The idea of possibly the isobus leak and some maintenance thing preventing the DGs not starting is chilling...two failed components showing up in one accident. This condemns Entergy's maintenance on the southern fleet.

I think this all stems from Arkansas Nuclear One. They had to divert monies from the fleet in order to recover from everything discovered in the stator drop accident.

Wonder what the power lever is a Grand Gulf?    

Power Reactor Event Number: 52863 Facility: WATERFORD Region: 4 State: LA Unit: [3] [ ] [ ] RX Type: [3] CE NRC Notified By: MICKEY FOLSE HQ OPS Officer: HOWIE CROUCH Notification Date: 07/17/2017 Notification Time: 17:37 [ET] Event Date: 07/17/2017 Event Time: 16:17 [CDT] Last Update Date: 07/17/2017 Emergency Class: UNUSUAL EVENT 10 CFR Section: 50.72(a) (1) (i) - EMERGENCY DECLARED 50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL 50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION 50.72(b)(3)(v)(A) - POT UNABLE TO SAFE SD Person (Organization): THOMAS HIPSCHMAN (R4DO) MICHAEL F. KING (NRR) BRIAN HOLIAN (NRR) KRISS KENNEDY (R4RA) JEFF GRANT (IRD) Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode 3 A/R Y 100 Power Operation 0 Hot Standby Event Text UNUSUAL EVENT DECLARED DUE TO LOSS OF OFFSITE POWER During a rain and lightning storm, plant operators observed arcing from the main transformer bus duct and notified the control room. The decision was made to trip the main generator which resulted in an automatic reactor trip. The plant entered EAL SU.1 as a result of the loss of offsite power for greater than fifteen minutes. Plant safety busses are being supplied by both emergency diesel generators while the licensee inspects the electrical system to determine any damage prior to bringing offsite power back into the facility. Offsite power is available to the facility. No offsite assistance was requested by the licensee. During the trip, all rods inserted into the core. Decay heat is being removed via the atmospheric dump valves with emergency feedwater supplying the steam generators. The main steam isolation valves were manually closed to protect the main condenser. There were no safeties or relief valves that actuated during the plant transient. There is no known primary-to-secondary leakage. Reactor cooling is via natural circulation. All safety equipment is available for the safe shutdown of the plant. The licensee has notified the NRC Resident Inspector, Louisiana Department of Environmental Quality and the local Parish emergency management agencies. Notified DHS SWO, FEMA, DHS NICC, FEMA National Watch Center (email) and Nuclear SSA (email). * * * UPDATE ON 7/17/17 AT 2007 EDT FROM MARIA ZAMBER TO DONG PARK * * * This notification is also made under 10 CFR 50.72(b)(3)(v)(D). "This is a non-emergency notification from Waterford 3. "On July 17, 2017 at 1606 CDT, the reactor automatically tripped due to a loss of Forced Circulation, which was the result of Loss of Offsite Power (LOOP) to the electrical (safety and non-safety) buses. Both 'A' and 'B' trains of Emergency Diesel Generators (EDGs) started as designed to reenergize the 'A' and 'B' safety buses. The LOOP caused a loss of feedwater pumps, resulting in an automatic actuation of the Emergency Feedwater (EFW) system. "Prior to the reactor trip, at 1600 CDT, personnel noticed the isophase bus duct to main transformer 'B' glowing orange due to an unknown reason. Due to this, the main turbine was manually tripped at 1606 CDT. Following the turbine trip, the electrical (safety and non-safety) buses did not transfer to the startup transformers as expected due to an unknown reason. "The plant entered the Emergency Operating Procedure for LOOP/Loss of Forced Circulation Recovery. "At 1617 CDT, an Unusual Event was declared due to Initiating Condition (IC) SU1 - Loss of all offsite AC power to safety buses [greater than] 15 minutes. "All safety systems responded as expected. "The plant is currently in mode 3 and stable with the EDGs supplying both safety buses and with EFW feeding and maintaining both steam generators. Offsite power is in the process of being restored." The licensee has notified the NRC Resident Inspector, Louisiana Department of Environmental Quality and the local Parish emergency management agencies. * * * UPDATE FROM ADAM TAMPLAIN TO HOWIE CROUCH AT 2203 EDT ON 7/17/17 * * * The licensee terminated the Notification of Unusual Event at 2056 CDT. The basis for terminating was that offsite power was restored to the safety busses. The licensee has notified Louisiana Department of Environmental Quality, St. John and St. Charles Parishes, Louisiana Homeland Security Emergency Preparedness, and will be notifying the NRC Resident Inspector. Notified IRD (Stapleton), NRR (King), R4DO (Hipschman), DHS SWO, FEMA, DHS NICC, FEMA National Watch Center (email) and Nuclear SSA (email).