Liquefied Gas Carrier

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Loss of compressed air system - Emergency response for liquefied gas carriers

An emergency can occur at any time and in any situation. Effective action is only possible if pre-planned and practical procedures have been developed and are frequently exercised.

The loss of compressed control air will immediately activate ESDS which means all cargo operation will be stopped as well as dual firing. Also control air is essential for all regulators in engine room including both boilers. It is, therefore, possible that the turbo generators will also stop. Recommended actions are as below:

i) If there is a connection between working air and control air connect both systems


ii) Start up Stand-by generator (Diesel generator) if it is not running

iii) If Stand-by generator (Diesel generator) fails, start-up emergency generator

iv) Advise Terminal

v) Evaluate situation and decide whether to disconnect arms

vi) Consider - external assistance, tugs. particularly alongside terminal, transiting in port and close to coast

vii) Consider – leaving berth

viii) Consider – dropping anchor

ix) Hoist and exhibit the proper signal: NUC (Not Under Control)

x) Advise other vessels in the vicinity if applicable


When Compressed Air has been restored

i) Cancel warning to ships in the vicinity

ii) Advise Terminal

iii) Check all navigation, cargo and engine equipment



Related Information:

  1. Leaks on the Cargo System, Continuous Flow - how to prevent


  2. LNG tank leaks and immediate action by gas carriers


  3. Leaks from a Loading Arm due to Tidal or Current Effects

  4. Minor or major leaks from LNG tanks


  5. Risk of Overfilling of Cargo Tank during Loading


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Displacing with Vapour of the Next Cargo (Purging)

Procedure for Water washing after Ammonia Cargoes

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Preparatory operations of drydocking for LNG carriers

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Development and potential of todays emerging gas technologies

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The risk of laden voyage - a brief guide to liquefied gas carriers

Connection and disconnection of cargo hoses and hard arms

The risk of ballast voyage - a brief guide to liquefied gas carriers

The risk of laden voyage - a brief guide to liquefied gas carriers



Related Information:

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  2. Details of various cargo handling equipment onboard

  3. Reactivity of liquefied gas cargo and safety guideline


  4. Preparatory operations for drydocking


  5. Type of gas carriers - variation in the design, construction and operation


    6. 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







    Related Information:

    1. LNG tank leaks and immediate action by gas carriers


    2. Leaks from a Loading Arm due to Tidal or Current Effects

    3. Minor or major leaks from LNG tanks


    4. 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









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