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BIGF

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  • What do you understand by flash point of a fuel?
    Explain the flash point testing procedure
  • What is the flammability range of methane?
    5 to 15% by volume
  • What is water curtain?
    Designed to prevent LNG from coming into direct contact with the ship's hull
  • What is the fourth component of fire tetrahedron?
    Molecular chain reaction
  • What are the disadvantages of LNG?
    Colourless, odourless, very less flashpoint.
  • What is the minimum capacity of SCBA bottle as per SOLAS?
    1200 ltrs
  • What do you understand by LEL?
    Lowest concentration of a gas or vapour that will burn in air.
  • What are the contents of firemans outfit? What is the speciality of fireman suit used for LNG fires?
    Fireman suit, scba, walkie-talkie, rescue line with belt etc. / Apron is cryogenic
  • What is the disadvantage with the DCP extinguishers?
    No cooling effect, danger of re-ignition & caking
  • Who is the overall incharge while fighting the fire?
    Master
  • What are the names of the team organised during fire fighting drill?
    Command team, Emergency team 1 & 2, Roving/technical team & Support/First aid team
  • What is the propellant gas used for DCP?
    Nitrogen
  • Why are we using LNG as a fuel even though it is a greenhouse gas?
    Once burnt, it is not a greenhouse gas
  • What are the duties of technical/roving team during fire fighting?
    Start emergency pump, ventilation & power isolation
  • What is methane slip?
    Methane escaping through exhaust and C/c vent
  • What are the advantages of LNG?
    Less emission, abundantly available
  • In which of the places, LNG fire is most likely to happen onboard?
    Bunker manifold, Pump glands, Pipe flanges & Relief valves
  • Among smothering, starvation & cooling, which you think is the best method for extinguishing LNG fires?
    Starvation
  • Is methane a greenhouse gas?
    Yes
  • What are the duties of emergency team?
    Wear firemans outfit, boundary cooling, fight the fire
  • Which extinguishing medium is best for fighting LNG fire?
    DCP
  • What is Novec 1230?
    Good extinguishing medium for gas fires as well as electrical fires.
  • What are the duties of support team during fire fighting?
    First aid, preparation of survival craft
  • Can you hit LNG directly with water jet?
    No
  • What is the flash point of LNG?
    -188 deg C
  • What is the harmful effect of CO2?
    Greenhouse effect & Global warming
  • What is the fire triangle?
    Heat, Fuel & Oxygen
  • At what temperature LNG is being stored?
    -163 deg c
  • Why CO2 is not used as propellant gas for DCP
    Due to moisture/caking effect
  • Which chemical is used to prevent caking in DCP?
    Magnesium Stearate
  • What are the duties of command team?
    Overall command, internal & external communication
  • How many teams are there during fire fighting drill?
    5