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BACKWARMING
– Valve getting stuck after its been throttled back
– Increase in active (warming drums pressure 1-2X when throttling backHCO FILTRATION
– Ineffective!
SHUTDOWN EFFICIENCY
– Flush fractionator until bottoms product is of LCGO consistency
– Ready for entry in ~7 days
– Water wash post RTI chem clean and steam out
– Good feedback with RTI
– Steam condensing in OVHD fans so had to steam reflux drum directHEATER TRIP
Bring feed back when:
-Velocity & emergency steam
– Tower pressure rises
– COT’s drop
– Drum has enough time to coke for +4 hoursDRUM UNHEADING & WATER DRAIN
-Vent line needs to be same size as drain line
ADVANCE CONTROLS – HTS & FRAC
– DMC works well
SPALLING
– 24 hrs need Bridge-well vs. off-line whole htr spall
PRESSURE QUENCHING
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