John Ewing wrote: Ned - I agree with you but I am wondering whether the investigators have established whether the initial failure was the cylinder or a component downstream. I have seen copper tubing on the aftercoolers of large air compressors fracture from excessive vibration. Brass pipe fittings can also fail if they have porosity or are overtightened. It would be ...

...@aioe.org> writes: I find it somewhat curious that with this level of detail, that neither of the words "inspected" or "tested", appear anywhere in the report. I'd assume the reasons the dates vary is because the tanks are swapped out at regular intervals, tested, and then stored until needed. The cylinders were installed since the last D check, so I assume it's every few years.

... prelim report - Table 2: Details of the passenger oxygen cylinders fitted to VH-OJK at the time of the occurrence ... inspection. Ned Did you also note that the cylinders are filled to a pressure of 1850psi and minimum 2.87 ... that your LPG bottle does not have that pressure either. Gas cylinders (CIG) have something like 2500psi are a much thicker wall and...

... message news:48b87a64$1_9@news.peopletelecom.com.au... Did you also note that the cylinders are filled to a pressure of 1850psi and minimum 2.87 mm (0.113 inch) wall thickness. And you guessed that your LPG bottle does not have that pressure either. Gas cylinders (CIG) have something like 2500psi are a much thicker wall and tested on a regular basis. ...

... report - Table 2: Details of the passenger oxygen cylinders fitted to VH-OJK at the time of the occurrence .... Ned Did you also note that the cylinders are filled to a pressure of 1850psi and minimum 2.87 mm ...you guessed that your LPG bottle does not have that pressure either. Gas cylinders (CIG) have something like 2500psi are a much thicker wall and tested...

... report - Table 2: Details of the passenger oxygen cylinders fitted to VH-OJK at the time of the occurrence ...> inspection. Ned Did you also note that the cylinders are filled to a pressure of 1850psi and minimum 2.87 mm ...guessed that your LPG bottle does not have that pressure either. Gas cylinders (CIG) have something like 2500psi are a much thicker wall and tested...

From the ATSB prelim report - Table 2: Details of the passenger oxygen cylinders fitted to VH-OJK at the time of the occurrence Location Serial No. Manufactured date Fitted to aircraft date Right side #1 240341 Feb 92 16 Jun 07 Right side #2 ST30395 Oct 01 14 Jun 08 Right side #3 ST20539 Apr 01 19 Jan 07 Right side #4 535657 Feb 96 4 Jun 08 Right side #5 666845 Mar 99 01 Mar ...

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...OzOne. Maybe I'm missing your point however...... If the oxygen stored in the cylinder was liquid oxygen then the conversion from liquid to gas would indeed take up "latent heat" much...equipment. Tried to find a reference but came across this. Read this one and this is only filling cylinders it with oxygen. http://shippai.jst.go.jp/en/Detail?fn=0&id=CB1012039&

...the three twins I welcome you to Crackerbox Palace. I'm not too sure of that OzOne. Maybe I'm missing your point however...... If the oxygen stored in the cylinder was liquid oxygen then the conversion from liquid to gas would indeed take up "latent heat" much in the same way that blowing on a wet finger cools your finger through the evaporation ...