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Selasa, 09 April 2013

EGB Filling Procedure


Step 1:- CRACK OPEN the outlet valve to the EGB circ pump and let the warm water heat the inlet line to the EGB line. Close the drain valve after the EGB circ pump when hot water comes out.
Step 2:- SLOWLY OPEN the suction valve to the EGB Circ pump. And then OPEN the discharge valve to half way.
Step 3:- after the inlet line to the EGB is warm crack open the inlet valves one at a time.
Step 4:- when warm water starts to come out of the drain of the EGB, CLOSE both the drain valves. Let the EGB fill up naturally until water comes out of the vent line. Then CLOSE the vent line. Wait for EGB pressure to rise.
Step 5:- Crack open both outlet valves one at a time.
Step 6:- After the lines are all warmed up fully open the inlet valves and the outlet valves. Also fully open the discharge valve of the circ pump. Leave the EGB to naturally warm up for an hour.
Step 7:- De-isolate the EGB Circ pump breaker by removing the breaker lock out tag out, putting the pump to remote and take out the emergency stop.
Step 8:-On the VDU set the circ pump to MANUAL. DECREASE the set point for speed to 20%, next start the pump. Visually inspect the pump and EBG,if all is OK then slowly ramp the pump up to 80% stepping 10% at a time. When at 80% set the pump to Automatic
Step 9:- If all is well the engine can be de-isolated by
1. Closing the drain for the starting air
2. Open the starting air valve
3. On the engine, reset the emergency stop handle beside the local control stand
4. Put the engine from MANUAL to REMOTE on the ECR local panel.
5. Put the PRE-LUB and JACKING pumps to AUTO
6. Put the engine back on standby on the VDU

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