Thursday, October 11, 2018

Junk Plant Grand Gulf: This Is How A bad Plant Looks

The long outage was from about April 7 to July 11, 2017.  

They are running equipment to failure. They aren't spending enough money to keep equipment reliable and upgrading obsolete components. 
Junk Plant Grand Gulf Restarted From 50 Day Outage...Lets Watch It Till 100% Power
So the outage started near the early May 2017? Look how bad the startup was? 

At 00:10 on April 4, 2017, the reactor was manually shutdown from a 75 percent thermal power. due to condensate storage tank level lowering to 24 feet. All control rods fully inserted and all systems actuated as operated as designed. No safety relief valves actuated. Reactor level and pressure were controlled within normal bands. Reactor core isolation cooling (RCICJ) was manually initiated for level controlled.  Decay heat was removed via steam discharge to the condenser, and t6•the suppression pool via RCIC. The electrical grid was stable and supplying plant loads. The cause of the condensate depletion was a condensate system leak. 

The condensate system leak was a failed pipe connection caused by cycling water injection valves that induced excessive: vibration on the: pipe flange. A failing Turbine Control Card caused the faulty signal which led to the water injection valve's cycling. The piping and flange connection were repaired, and the Turbine Control Card was replaced. In addition, the Turbine Control System is scheduled to be replaced in Refueling Outage 22 in 2020.

All other systems operated as designed, and there were no actual nuc1ear safety or radiological consequences during the event.

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