Aux 2 Unit 14 Petrol, LPG, volatile fuels and Fuel lockers

What is a best practice for refilling portable petrol containers stored in lockers?

B) Refilling should be conducted outside in a well-ventilated area away from open flames

What is a necessary safety measure when using small lockers for petrol storage?

B) Install a spark-proof ventilation system

Why is an emergency electrical shut-off required for a locker designated for petrol storage?

B) To disconnect electrical power immediately in case of an emergency

Why is regular inspection of lockers and their contents necessary?

C) To detect any leaks, corrosion, or damage to the containers

What is an essential feature of a gas detector suitable for an LPG installation?

B) Sensitivity to propane and butane gases

Why is grounding important for electrical installations in petrol storage lockers?

B) To prevent static electricity buildup that could ignite flammable vapors

Which of the following safety feature should be included with gas cylinders to prevent gas leakage?

B) Non-return valves and pressure relief devices

What is the best practice for securing gas cylinders on board a vessel?

B) Secure them upright with appropriate clamps or restraints

What type of circuit protection should be used for electrical installations in a petrol storage locker?

B) Flameproof and explosion-protected circuit breakers

What type of material is preferred for constructing storage tanks for aviation fuel?

C) Corrosion-resistant metal or stainless steel

Where should switches for electrical circuits in petrol storage lockers be installed?

B) Outside the locker, away from potential vapor exposure

Where should aviation fuel storage tanks be placed for optimal safety?

B) On an open deck or in a designated external area, away from ignition sources

What material should be used to construct lockers that store flammable liquids on a vessel?

B) Fire-retardant metal or other non-combustible materials

How should petrol containers be secured within the locker?

B) Secured upright to prevent tipping and movement

Where should lockers storing flammable liquids be located on the open deck?

B) Away from sources of ignition and in a well-ventilated area

How should petrol containers be stored to minimize vapor buildup?

B) Keep them upright and tightly sealed

What is an essential requirement for joints and fittings in gas pipework?

B) They must be securely sealed and tested for leaks using a soap solution or gas leak detector

What fire safety measure should be in place near aviation fuel storage tanks?

B) A CO₂ or dry powder fire extinguisher

Where should gas detectors be placed in an LPG installation?

B) Near the floor, where heavier-than-air gases accumulate

What type of attachment is necessary to ensure safe gas flow from cylinders?

B) A regulator designed to handle the specific gas pressure

Which of the following can result from improper ventilation when using LPG open flame appliances?

B) Formation of carbon monoxide

What should be installed at the point where gas pipework enters a compartment?

B) A gas shut-off valve

What is the recommended type of lighting for a locker that stores petrol or vehicles with fuel in their tanks?

C) Vapor-proof and explosion-proof lighting fixtures

What is the minimum distance required between aviation fuel storage tanks and potential ignition sources?

B) At least 10 feet (3 meters)

Which of the following is a major danger associated with the use of LPG open flame appliances?

B) Risk of explosion due to gas leaks

What type of locking mechanism should be used for lockers storing highly flammable liquids?

B) A safety latch that is easily accessible but secure

What feature should a locker have to contain spills from flammable liquids?

B) A sealed base with a drip tray or containment lip

What type of fire extinguisher should be located near a locker storing flammable liquids?

C) Dry powder or foam extinguisher suitable for flammable liquid fires

Why should petrol containers be inspected regularly?

C) To check for leaks or signs of corrosion that could lead to a hazard

Where should ventilation outlets for aviation fuel storage tanks be located?

C) At the highest point of the tank to allow vapor release

Why should lockers storing petrol and other flammable liquids be clearly labeled as "Flammable"?

B) To warn crew members and visitors of potential danger

What should a gas detector do when it senses a leak?

B) Emit an audible alarm and possibly trigger an automatic shut-off

Where should hand portable petrol containers be stowed on a vessel?

B) In small lockers on an open deck with proper ventilation

How often should aviation fuel storage tanks be inspected for safety compliance?

B) Annually

What material is preferred for gas pipework on a vessel to ensure durability and safety?

B) High-quality, corrosion-resistant metal such as copper or stainless steel

What is the purpose of labeling a petrol storage locker as “Flammable” or “Petrol Storage”?

B) To warn crew members of potential danger and ensure proper handling

What is the main purpose of proper ventilation in aviation fuel storage tanks?

B) To reduce fuel vapor buildup and prevent explosive conditions

What type of fire extinguisher should be located near a petrol storage locker?

C) Dry powder or foam extinguisher suitable for flammable liquids

Why is it important for a gas detector to have a self-check or testing function?

B) To ensure continuous proper functioning and reliability

What type of wiring should be used for electrical installations in lockers storing petrol?

C) Armored, flame-retardant, and gas-tight conduit wiring

What material should the locker be constructed from to safely store petrol containers?

B) Fire-retardant material or metal

What safety feature is essential for aviation fuel storage tanks to manage overpressure?

B) Pressure relief valves

What type of coating is recommended for the internal surface of aviation fuel storage tanks?

B) A non-corrosive, fuel-resistant coating

What type of electrical equipment should be used in a locker designated for the storage of petrol or fuel-filled vehicles?

B) Explosion-proof or intrinsically safe electrical equipment

What precaution should be taken when refilling petrol containers?

B) Refuel in a well-ventilated area away from open flames

Where should electrical panels for lockers storing petrol be installed?

B) In a separate, well-ventilated area outside the locker

Where should gas cylinders be stored on a vessel to ensure safety?

B) In a well-ventilated and designated area away from heat sources

What type of ventilation should the locker containing petrol containers have?

B) Adequate natural ventilation to prevent vapor accumulation

What is another significant danger posed by LPG open flame appliances?

A) Reduction in oxygen levels leading to suffocation

What should be done to ensure the safety of petrol containers in lockers during rough sea conditions?

B) Secure them firmly to prevent movement

How does proper ventilation affect the safety of electrical installations in a petrol storage locker?

B) It prevents the accumulation of flammable vapors, reducing ignition risk

What maintenance procedure should be followed for electrical installations in a locker storing petrol?

B) Regular inspections and maintenance to ensure no damage or potential sparking hazards

What is an essential ventilation requirement for small lockers storing petrol and other highly flammable liquids?

B) Adequate natural ventilation to prevent vapor buildup

Why is it important to have spill containment measures around aviation fuel storage tanks?

B) To prevent fuel from spilling into the environment and creating a fire hazard

Which power source is recommended for a gas detector in an LPG installation?

B) Hardwired with battery backup

Why is it important for gas pipework to be supported and secured properly?

A) To prevent excessive vibration and potential damage to the pipework

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