Asphyxiation – If a carbon dioxide extinguisher is used in an enclosed or poorly ventilated area, there is a serious risk of asphyxiation. Higher pressure – When discharged, the carbon dioxide in the extinguisher turns from liquid into gas.
What danger to personnel exists when a carbon dioxide fire extinguisher is discharged in a small enclosed space?
When a CO2 extinguisher is used in a confined space there is danger that the user may become overwhelmed by the sudden increase in carbon dioxide emissions. This occurs as CO2 is an asphyxiant, and the confined space means oxygen will be replaced by the CO2 much faster.
What danger to human health can carbon dioxide extinguisher pose?
A high concentration can displace oxygen in the air. If less oxygen is available to breathe, symptoms such as rapid breathing, rapid heart rate, clumsiness, emotional upsets and fatigue can result. As less oxygen becomes available, nausea and vomiting, collapse, convulsions, coma and death can occur.
What is the hazard from holding the discharge horn of a CO2 extinguisher?
Do not hold the horn, unless it is a frost-free horn, as it becomes extremely cold during use and can lead to severe frost burns.
When discharging a carbon dioxide extinguisher What should you avoid holding?
Use CO2 extinguishers carefully, avoiding holding the extinguisher by the horn. Remember – don’t use CO2 extinguishers in a confined space.
What is the major fire hazard found in accommodation?
It is noted that the maximum number fires on ships initiates in the ship’s accommodation area due to negligence of the ship’s staff. The accommodation area of the ship is vulnerable to fire as it comprises substance such as wood, cardboard, and other personal fire-sensitive things used by the ship’s crew onboard.
How does carbon dioxide control fire?
Carbon dioxide covers the fire and cut-off the contact of oxygen and fuel. This is because carbon dioxide is heavier than the oxygen. … When carbon dioxide is released, it expands enormously and cools down. Due to this temperature it brings down and this helps in controlling the fire.
What happens if you inhale fire extinguisher?
Inhalation of monoammonium phosphate and sodium bicarbonate can cause mild irritation to the nose, throat, and lungs and results in symptoms like shortness of breath and coughing. Dizziness and headache are also possible. These symptoms usually resolve quickly with fresh air.
What actions can you take to prevent a fire from spreading?
Fire doors: If sealed using the correct materials, fire doors act as barriers which prevent the fire from spreading. Cavity barriers: These block the paths for flames and fumes to follow, acting as another way to diminish the threat of fires spreading.
Can a CO2 fire extinguisher explode?
Damage to the body of the extinguisher.
As tested in the video, dents and massive blows to the extinguisher does not usually result to an explosion. However, if the extinguishers are tampered, and intentionally cut, there may be a possibility of an explosion.
What happens to the nozzle of a CO2 fire extinguisher?
It only becomes a gas when put under pressure, which is what happens when the handle of the fire extinguisher is squeezed. When the handle is held together this will cause the CO2 gas to emerge from the nozzle at an extremely high speed.