Originally Posted by
twinbird
I recently took the seminar relating to the usage of 100% pressurized oxygen system in the helicopter.
There is a question in it, "Do the normal and abnormal procedures checklists for your aircraft include items related to the high-pressure 100% oxygen system?"
My company doesn't incorporate anything in our SOP so far and I'm wondering if there is someone who has the checklists which include items related to the high-pressure 100% oxygen system, please share the knowledge?
Thanks in advance
O2 is the common denominator but the where, how and why can change things. Cargo, Supplementary or MED.
Cargo is Hazmat as 1/ Compressed Gas and 2/ Oxydizer, installed isn't and portable supplementary under PVT isn't. MED has some exemptions. Pretty sure in all cases of installed under TD or STC whether supplementary, emergency or MED access to a manual shutoff accessible by the crew is required, apparently a flow limiter can be an also be an acceptable means but................?. That would bring up a line in certain EP's i.e. cabin fire with oxygen in use, oxygen leak large or small and also pre-flight/normal procedures? What does the RFM Supplement say for the STC? Just about anything will burn in the presence of oxygen and ignition can even occur by turning a valve on too quickly and cause adiabatic heating. Ever cut steel with Oxy Actylene cutting torch? If not find someone who will let you have a go.
Be aware that with an oxygen fed fire your Halon extinguisher will be slightly less than completely useless unless you can cut off the oxygen supply.
If you need an example of a cluster from a Swiss Cheese model read
this.