|
|
|
|
|
 |
Unload only after sunrise and before sunset. |
|
|
The Exit Gate must always remain completely in open condition during LPG/Propane unloading operation. |
|
|
Check that Spark Arrestor is provided on the exhaust of LPG /Propane Tanker before it enters LPG/Propane Yard. |
|
|
Check the level of LPG/Propane in the bullet to see if sufficient empty volume is present to take in the product from the mobile tanker. |
|
|
Ensure that tanker is parked only on the hard standing platform, provide wheel chocks behind the tanker wheels to prevent accidental movement of the vehicle. |
|
|
Ensure that Master Switch of tanker is switched off and DCP Fire Extinguishers are taken out and kept ready for use in case of Emergency. |
|
|
Connect Earthing /Bonding wire crocodile clamp to tanker. See that bonding is always made to ensure continuity by removing any protective coating like paint, rust etc. |
|
|
If the fuel supply to the fire cannot be cut off, the fire must be controlled. |
|
|
Check that air inside the hoses is vented to atmosphere by opeoning the vent valves provided in the unloading pipeline. |
|
|
Check that suction, discharge valves of the LPG/Propane pump and liquid inlet valve and vapour balancing valve of bullet / LPG vessel are in open condition. |
|
|
Check that flow of liquid in sight flow glass indicator once unloading starts. |
|
|
The liquid level in bullet and tank truck should be constantly monitored. |
|
|
Check that liquid level in bullet does not exceed 85% of rotogauge reading. |
|
|
Check that vapour equalising line connected through the vapour unloading hose to tank truck is open through out the unloading operation. |
|
|
If the liquid flow stops, switch off the unloading pump and close valves of the tanker, valves on bullet and suction of pump. |
|
|
Check that the entrapped LPG in liquid and vapour hoses (after unloading) is released by opening vent valve before disconnecting the hoses. |
|
|
Check that after depressurising the hoses, vent valves are closed, hoses are disconnected from the tank-truck and plugged. |
|
|
Check that earthing connection is disconnected and wheel chokes are removed before allowing the tanker to leave. |
|
| ||||||
Unloading Procedures
