What precautions must be observed when working with or around aircraft oxygen systems?

What precautions must be observed when working with or around aircraft oxygen systems?

When working around oxygen and oxygen systems, cleanliness enhances safety. Clean, grease-free hands, clothes, and tools are essential. A good practice is to use only tools dedicated for work on oxygen systems. There should be absolutely no smoking or open flames within a minimum of 50 feet of the work area.

What type of oxygen is used when charging a high pressure oxygen system in an aircraft?

The airplane utilizes an 1800 psi high-pressure oxygen system which provides the pilot and co-pilot with a diluter-demand type of oxygen supply.

What is the safety device on an oxygen cylinder?

Safety- or Pressure-Relief Valves: These valves are usually a part of the cylinder. They are normally held closed by a spring. The force holding the valve closed is set according to the type of gas in the cylinder. The valve opens if the cylinder pressure exceeds the set safety limit.

What must be performed each time the oxygen system is opened for maintenance?

An oxygen system needs to be purged if it has been opened or depleted for more than 2 hours, or if it is suspected that the system has been contaminated. Purging is accomplished to evacuate contaminants and to restore oxygen saturation to the inside of the system.

What are the oxygen requirements for flight?

A 100-percent level is as good as it gets, and 95 percent is considered a minimum. An oxygen saturation level below 90 percent is a warning sign. That’s when patients — and pilots — begin to experience hypoxia.

What type of oxygen must be used in aircraft?

As a crew member, you must use supplemental oxygen when you’re above 12,500 feet MSL cabin pressure altitude for more than 30 minutes, and anytime you’re above 14,000 feet MSL. Above 15,000 feet MSL, you have to provide it to your passengers – and many aviation attorneys would suggest you make them use it.

How do oxygen cylinders show over pressure?

The Oxygen cylinder bears a label showing how many liters it contains when full. The pressure on the pressure gauge will show, usually in gross divisions from full to empty, how full the cylinder is. Thus the clinician will not be presented with a cylinder that has to be replaced because it will not last the journey.

What are the supplemental oxygen requirements?

How do you handle oxygen cylinders?

Ensure oxygen cylinders are securely attached to beds, trolleys or walls when in use. Modern light-weight cylinders can be damaged by sharp objects such as securing screws. Store oxygen cylinders in a secure area that is well ventilated, clean and dry.

How do you ensure that the oxygen and acetylene cylinders are secured correctly?

Always ensure that the manifold containing acetylene and oxygen cylinders are separated by a 5-foot-high-fire rated wall or at least 20-feet distance unless on a torch cart used for cutting and welding.

What opens the valve at each passenger oxygen mask to allow oxygen to flow from the manifold to the mask?

When there is sufficient differential pressure across the demand diaphragm. The demand valve opens to supply oxygen to the mask.

What are the oxygen requirements for pilots?

A 100-percent level is as good as it gets, and 95 percent is considered a minimum. An oxygen saturation level below 90 percent is a warning sign.

What precautions should be taken when servicing a gaseous oxygen system?

The type of oxygen to be used, safety precautions, equipment to be used, and the procedures for filling and testing the system must be observed. Several general precautions should also be observed when servicing a gaseous oxygen system. Oxygen valves should be opened slowly and filling should proceed slowly to avoid overheating.

What precautions should be taken before using a gas cylinder?

Before cylinders are first used the following precautions should be taken: Make sure the cylinder is equipped with the correct regulator. Inspect the regulator and cylinder valves for grease, oil, dirt, and solvent. Never use grease or oil to lubricate regulators or cylinder valves because they can cause an explosion.

What should I avoid while using an oxygen tank?

If you follow your doctor’s clinical judgment regarding your oxygen therapy, you are not a risk of oxygen toxicity. Do not go near open flames – Stay at least 10 feet away from open flames while using an oxygen concentrator or oxygen tank. Keep away from cigarettes, candles, gas stoves, etc. Do not use an electric razor while using oxygen therapy.

What should I do if the oxygen pressure is too low?

If pressure is below 50 psi, replace the cylinder (s). On the aircraft, this may require purging the system with oxygen when completed. Best practices dictate that any low-pressure or empty cylinder (s) on the cart should also be removed and replaced when discovered.