Liquid gas fires are extremely dangerous as a result of gas leaks or gas explosion. The specific training provides multiple benefits to the trainees – crews because they learn and practice techniques.
Course
Objectives
At the completion of the course participating trainees will be aware:
- of liquefied gas fires hazards.
- of various sources of ignition which may be present on a liquefied gas tanker and take all relevant precautions.
- of the main types of firefighting equipment and means of personal fire protection.
- of the limitations of fire protective clothing.
- of the methods that can be employed in order to control and extinguish a liquefied gas fire.
- of the proper use of the available firefighting equipment and protective clothing, as well as advanced practical firefighting techniques and tactics applicable to gas tankers.
Why
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The specific training provides multiple benefits to the trainees – crews because they learn and practice on:
- Liquid gas firefighting techniques.
- How (techniques) to protect important and crucial infrastructures and premises, in case fire is developing in fountain – jet manner.
- Fire approaching techniques and pipe gas flow interruption.
It is recommended that trainees have attended an Advanced Fire Fighting Course (AFFC) within the last 3 years.
All trainees must have a doctor’s certificate of good health.
Course
Theory
- Flammable / Explosive mixture. What is their relation. flash point, auto-ignition temperature, flammable range, LEL, UEL, flammability chart, effect of oxygen %.
- Special combustion characteristics of liquefied gases:
- pool fires
- pressure leak fires
- confined explosions
- unconfined
- semiconfined vapor cloud explosions
- radiation
- exposure protection
- The BLEVE phenomenon.
- Sources of emission of flammable cargo vapor – leakage of liquefied gas not ignited – dispersion of gas, vapors and liquefied spill.
- Precautions against sources of ignition.
- Static electricity, earthing, bonding, insulating – cathodic protection on ship/jetty.
- The danger of static electricity caused by CO2 injected in explosive atmosphere.
- Controlling a fire (cutting off the supply of fuel – recommended action if this is impossible – inhibiting the burning process, removing oxygen, removing heat.)
- Treatment of riser, liquid spill and pressure leak fires.
- Fire extinguishing systems: portable firefighting equipment. Fixed water spray, fixed dry powder, total flooding systems. Areas protected, use limitations.
- Personal protective equipment.
- Organization and crew training.
- Case studies.
- Practice
Course
Practice
- Demonstration of the use of protective clothing
- Demonstration of the fire team tasks without a fire
- Pool fires:
- The effect of dropping water
- The propagation of gas
- Flash backfire Using DP Possibilities and difficulties
- Water spray Dispersion
- Extinguishing a simulated mast riser fire introducing nitrogen or using fry powder
- Probability of reignition. The need for cooling
- Team of 4 fire fighters using water hose they bend a jet fire flame to avoid impinging on a pipe
- Team of 4 trainees wearing protective clothing and using water spray protection approaches the fire of a leaking flange, the bend, the flame and close the valve
- These exercises are repeated with the trainees changing position in the team
