CEP ISOLATION PROCEDURE
- If CEP is in stopped condition , remove from stand by mode .Close discharge valve & its IBV
- If CEP is running , stop it .Close discharge valve & its IBV
- Ensure Electrical isolation: CEP Motor, Discharge MOV including IBV
- Ensure its discharge MOV & its IBV are in closed condition.
- Close pneumatic Re-circulation control valve & its manual isolating valve.
- Ensure Suction line Relief manual valve is in open condition
- Close manual suction valve
- Close discharge vent manual valve & its solenoid valve
- Close both source of seal water manual valve. Ensure seal water pressure gauge is showing zero & observe vacuum
- Close Canister vent manual valve
- Close ECW cooling inlet and outlet valve to CEP thrust bearing oil cooler jacket if required
- Open Suction strainer vent valve & Ensure no air is sucking from it. If air is sucking ,close this vent & tighten the valve (mention in S.no. 5 ,7, 8 & 10 )
- Issue the permit
- Ensure drain & vent of suction strainer are in closed condition
- Open ECW cooling inlet and outlet valve to CEP thrust bearing oil cooler jacket.
- Ensure Suction line Relief manual valve is in open condition.
- Open Canister vent manual valve & Observe vacuum.
- Open seal water valve going to CEP mechanical seal &
- Note down Pressure in LIR Panel.
- Open suction manual valve
- Open recirculation isolation manual valve. Pneumatic recirculation control valve operation to be checked before starting the CEP. Keep control valve in full open condition.
- Open Discharge vent manual valve & open its solenoid valve
- Restore supply of CEP & its discharge MOV including IBV.
- Release EPB & Start CEP for trial run
No comments:
Post a Comment