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How much dry ice is safe?
You sometimes carry significant amounts of dry ice, to keep certain freight like perishable foodstuff or medical supplies cool.
Does anyone have experience with how much dry ice you can carry, before the CO2 it produces becomes a hazard to the crew? |
Yes - the prescribed amount is in IATA Dangerous Goods Regulations.
eg: CO-03 The carriage of Carbon dioxide, solid (Dry ice), UN1845 will be limited to the following established limits: • Continental Express and Connection Partners will be limited to: 2.5 kg net weight per package 35 kg net weight per aircraft (The above limits only apply to those carriers that accept UN 1845 as cargo and QUICKPAK) Note: All shipments containing Carbon dioxide, solid (Dry ice), UN 1845, must have a Class 9 label affixed to each package. (See figure 7.3.18)). |
oh great...how does this add to your carbon charge?
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helps to educate people to not hold it in bare hands as burns skin
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Boeing have published a 41 page service letter detailing the recommended allowable dry ice carriage limits.
FAA advisory Circular AC No. 91-76 also refers. |
How big is your airplane?
The AC is up to 91-76A |
757 freighter, just under 3000kg, 767 freighter, just over 3000kg (both packs operable).
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ask your friendly engineer for the service letter....
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Well, we only carried enough dry ice to keep food frozen/cold in the galley. The amount of dry ice required was not enough to be considered significant. Never had any problems even on flights exceeding eight hours.
(At least we never had anybody pass out while in the galley. :p) |
Should be venting at floor level in galley's that use dry ice storage, seen some health reaction from cabin crew where these were close off and the galley curtains had been pulled across to give privacy from passengers eyes!
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