11.15 Flashcards
What does EUOPS 1.760 state?
An operator may not fly above 25,000 feet with emergency oxygen available
Why is aviators breathing oxygen the only one used?
It’s very dry so moisture cannot freeze
What must be done when working with oxygen?
-keep distance from petroleum
-observe AMM
-have fire extinguishers on board
-normalise ISM
-cleanliness maintained
-plugs and caps installed
-special tooling to be used
What are the most common flight crew oxygen systems?
Diluter demand and pressure demand flow
What is the system from oxygen bottle to administering in the cockpit?
Oxygen bottle-pressure reducing valve-tubing and valves- individual demand regulator- demand regulator controlled by user with a shut off valve usually in cockpit
How does the crew oxygen delivery system differ from cockpit systems?
Oxygen bottles stored on lower deck- bottle is fitted with pressure regulator- oxygen passes through diluted demand regulator- the mask
What is the benefit of modern oxygen cylinders and there design?
Lightweight
Aluminium wrapped in Kevlar
What testing is done on oxygen tanks periodically?
Hydrostatic
What safety device do some oxygen bottles have?
A disc which bursts prior to damage occurring
At what pressure does the oxygen safety disc burst at?
2600psi
What is the purpose of the thermal compensator?
During refuelling a danger of heat concentration is adverted
What is a continuous flow system in oxygen?
The flow is consistent and does not stop on exhale
What is a demand oxygen system?
Oxygen is delivered only as the user inhales
What is a diluter demand oxygen system?
A demand system that gives diluted or 100 percent oxygen
How does a pressure demand oxygen system work?
It delivers oxygen through individual pressure regulators under higher pressure to force air into lungs
