Tanker Pipeline Systems
Transcript of Tanker Pipeline Systems
Tanker Pipeline SystemsDirect LineRing MainFree FlowCruciform
DIRECT LINE
Direct Line Advantages:- Relatively Fast Cheaper Good Segregation Line Wash fast Less Maintenance
•DISADVANTAGES:-
•NOT SO VERSATILE
•LINE WASHING INTO DESIGNATED TANKS
DIRECT LINE
Direct Line (Loading)
Open Cargo Tank Valves
Open Crossover
Valves
Open Drop
Valves
Open Bulkhead Masters
Open Manifold Valves
•When all valves confirmed open
•Ship and shore checks complete
•Request commence slow loading
Direct Line (Discharge)•When all valves confirmed open
•Ship and shore checks complete
•Request commence de-bottom
Open Cargo Tank Valves
Open Crossover
Valves
Open Risers
Open Pump Suction valves
Open Bulkhead Masters
Crack Open Pump
discharge valves
Open Manifld Valves
Start 1st Pump at slow
speed
•When Deck, Pumproom and overside checks completed
•& Shore receivingStart 2nd Pump at slow speed
RING MAIN SYSTEM
RING MAIN Advantages Versatile Disadvantages: Erosion @ bends Expensive High maintenance Line washing difficult Relatively slow load/discharge
RING MAIN
RING MAIN
DIRECT LINE
RING MAIN
Free Flow
Advantages Fast load/discharge Simple Disadvantages: Poor segregation Vessel usually requires a pipeline
system as well
FREE FLOW SYSTEMOpen Centre Cargo Tank
Valves
Open wing tank cargo valves
Open Main Tank Suction
Valves
Open Cargo Pump Suction
Valves
Open Manifold Valves
Crack Open No.1 Pump Discharge
Valve
X When Ship shore checks completed
Start No.1 Cargo Pump at slow RPM and De-bottom
•When deck and overside checks completed
•Ship/Shore ready continue running up pumps
X
X
Crack Open Discharge valves& Start remaining
pumps
Direct Line (Loading)
FREE FLOW SYSTEM
Load and Discharge
# No3
Diesel Jet FuelPetrol
# No2# No1
Gate Valve:
Globe Valve
Butterfly Valve
Ball Valve
Safety Valves
The function of any safety valves is to prevent an undue rise in pressure in the vessel to which it is fitted