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How to cool down cargo system in a liquefied gas carrier
Cargo systems are designed to withstand a certain service temperature; if this is below ambient temperature the system has to be cooled down to the temperature of the cargo before cargo transfer. For LNG and ethylene the stress and thermal shock caused by an over-rapid cooldown of the system could cause brittle fracture. Cooldown operations should be carried out carefully in accordance with instructions.
Below is our guideline for safe cargo operation on board gas carriers
Procedure for commissioning the cargo system
Preparation for Cargo Transfer
Procedure for discussion prior cargo transfer
Procedure for safe Cargo handling in Liquefied Gas Carriers
Procedure for loading Liquefied Gas Cargoes
Procedure for Cargo Conditioning in Liquefied Gas Carriers
Cargo Transfer between Vessels (STS Operation)
Procedure for segregation of Liquefied Gas Cargoes
Procedure for Stripping Liquefied Gas Cargoes
Procedure for Changing Liquefied Gas Cargoes
Displacing Atmosphere with Inert Gas (Inerting)
Displacing with Vapour of the Next Cargo (Purging)
Procedure for Water washing after Ammonia Cargoes
Related Information:
- Liquefied gas Cargo safe handling & responsibility on board
- Cargo emergency shutdown requirement for liquefied gas carrier
- Gas analyzing equipment
- Custody Transfer Measurement (CTM) System
External links :
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International maritime organization
Related Information:
- LNG tank leaks and immediate action by gas carriers
- Leaks from a Loading Arm due to Tidal or Current Effects
- Minor or major leaks from LNG tanks
- Risk of Overfilling of Cargo Tank during Loading
LNG spill risk during marine transportation and hazards associated
How to tackle fire on board LNG ship
Fire fighting plan for LNG cargo
Cargo conditioning, reliquefaction and boil-off control requirement for a liquefied gas carrier
Cargo Containment Systems in Liquefied Gas Carriers
cargo emergency shutdown requirement
damage stability guideline for liquefied gas carriers
Various Cargo handling equipments onboard
Cargo hoses connection guideline
Documents accompanying a liquid gas cargo
How LNG transferred from shore to ships cargo tanks ?
Cargo operation guideline onboard a liquefied gas carrier
Cargo piping Systems in Liquefied Gas Carriers
cargo planning requirement
cargo and pumproom safety precautions
cargo stripping guideline
Emergency response for cargo system leaks
Emergency response for cargo tank rupture
Risk of overfilling of cargo tank during loading onboard a liquefied gas carrier
Preparation for cargo transfer
cargo transfer between vessels- safety guideline
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