Document 3J88VM1dmwpxXaEw7nB7peNeJ

tetsop08 rev 07/90 CHECK ACTION STEPS (all caps) COMMENTS (below steps) 1. FILL KETTLE TO ABOUT 70 - 75% WITH SLUDGE FROM THE NORTH CLASSIFIER. High alarm limit is 75%. 2. COOK WITH STEAM FLOW AT 500 TO 800 LBS/HR. KETTLE PRESSURE, KEEP BELOW 5 PSIG. 3. SET DH SURGE DRUM LCV ON 50% AND AUTOMATIC AND LEAVE PUMP ON WITH RECIRCULATION. 4. COOK SLUDGE UNTIL LEVEL FALLS TO ABOUT 30% OR SO AND REFILL WITH FRESH FEED. Cut steam off before filling kettle. 5. SAMPLE PH OF KETTLE BOTTOMS TWICE/SHIFT. Adjust cell liquor flow to keep pH between 6 and 9. 6. IF CONTENTS WON'T COOK ANY FURTHER WITH 200 PSIG STEAM CHEST PRESSURE OR CONTENTS BECOME VERY THICK THEN DUMP CONTENTS TO SLUDGE BOX. See S.O.P. on dumping kettle to siudge box. 7. FILL WITH FRESH FEED FROM NORTH CLASSIFIER. 8. FLUSH THE SLUDGE KETTLE LEVEL TRANSMITTER ONCE/SHIFT TO KEEP IT FROM PLUGGING UP AND MALFUNCTIONING. SL 001409 CO*FIDffl";U or-' Subject to of l*th District -