Mailing List Archive

Mailing List: techdiver

Message Display

Hi Folks
	I was just doing some thought dives sitting here at work (yes I have
better things to do, but its a friday).I am not a Mix diver yet but am
planning to be one as soon as I can afford the course....

	A quick dive plan for 250fsw seemed to work out for a PO2 of 1.4 and
an END of 130fsw for PN gives me aprox:-

		16% O2
		46% N
		38% He

Now for my twin hundreds this means 76CuFt of He. I then rang a gas supplier
and was quoted $525 Aus for a 200CuFt Cylinder of He. This seems more than a
trifle expensive, where have I gone wrong????. Are my calcs out and you need
less He than that or is that a very expensive bottle of He.

				Thanks in advance
					Terry

-- 
********************************************************************
 Terry McCracken		 GEC ALSTHOM Information Technology 
 Software Support Engineer       Ph:  61 2 415 0509 
 terrym@ns*.co*.au* 		 Fax: 61 2 417 8635 

Navigate by Author: [Previous] [Next] [Author Search Index]
Navigate by Subject: [Previous] [Next] [Subject Search Index]

[Send Reply] [Send Message with New Topic]

[Search Selection] [Mailing List Home] [Home]