Chemical Tankers / Day 2 / Day 2 topic 6 - Cargo Pumping Systems
.pdf
Centrifugal Pump
Eductor Systems
Cargo system associated fittings
Stripping system
Stripping Test and quantity
Stripping Pump
Stripping deep well pump
Use of air/inert gas
Heating system
Steam
Thermal oil
Steam traps
Steam reducing valve/steam pressure
Cargo Pumps
Centrifugal pumps
Stripping
Gassing
Viscous cargoes Problems
Screw pumps
Relief valve
Positive Displacement
Viscous cargo suitable
Reciprocating pumps
Positive Displacement
Viscous cargo suitable
Deep well Pumps
Stripping/Individual pumps
Hydraulic Driven
Cold weatherHydraulic Piping LeakingNoise
Pump Inside tank
Electrical Driven
Long shaftCoolingStep-less Control
Cargo Pumps – Best Practice
Discharge pressure
Common discharge using individual pumps
Powerpack limitation/Electrical Load Limitation
Pressure gauges at manifold
Cargo pump maintenance
Cofferdam purging
Wear rings
Screw wear
Cargo Pumps
Cargo Piping Pressure test
Cargo valves
Markings
Butterfly valve
Gate valves
Ball valves
Precaution and problems ?
Cargo Pumps - various
Steaming of cargo piping
Double lip seal damage
Hydraulic oil leak in pump cofferdam
Portable pump(Emergency pump)
Precautions when connecting and disconnecting hydraulic hoses
Discharge hose coupling
Regular testing and familiarisation
Stripping of Cargo Tanks
Stripping of cargo tanks should be performed as per the guidance in the vessel's P&A Manual and with regard to any manufacturers' instructions. During tank stripping and line clearing the ship's list and trim must be maintained within the guidance in the P&A Manual.
