Friends of the Professional Car Society - Official Website of the Professional Car Society, Inc.Friends of the Professional Car Society - Official Website of the Professional Car Society, Inc.



Go Back   Friends of the Professional Car Society - Official Website of the Professional Car Society, Inc. > Professional Car Discussion > General Discussion Forum

Notices

General Discussion Forum For the general discussion of Professional Cars.

Reply
 
Thread Tools Display Modes
  #11  
Old 02-22-2018, 04:32 PM
Walter Suiter Walter Suiter is online now
Website Member
 
Join Date: Apr 2017
Location: Rochester NY 14612
Posts: 160
Thanks: 1
Thanked 177 Times in 75 Posts
Groans: 0
Groaned at 0 Times in 0 Posts
Default

Quote:
Originally Posted by John ED Renstrom View Post
Were they carrying compressed gas or liquid O2? My guess is the tank blew first. When it left the side of the rig it caused a electrical fire that got really hot in the rich mix. Nothing in an ambulance to burn except fuel that could get hot enough long enough to melt the safety on the tank,let alone hot enough to blow It would still be in its own compartment with the lines out side. The pt compartment.
Oh contrare, steel, actually the iron component of steel burns in an Oxygen rich atmosphere. That is exactly how Oxy/fuel torches and lasers cut steel. Aluminum, fiberglass, styrofoam and wood burn very quickly when Oxygen enriched.
A slow Oxygen leak in the presence of wood or foam will turn them into rocket fuel speed burns. It was quite fun back in the 60s watching baby nurslings learn how fast a mattress under an Oxygen tent cooked off when ignition was supplied.

Oddly, liquid Oxygen is far less likely to be a culprit in this event, both because liquid is constantly vented leading to a 10% content loss per day in the Dewer unless Oxygen is being drawn from the Dewer. Dewers are essentially LOW pressure insulated bottles without tops.
http://www.airproducts.com/~/media/f...fetygram-6.pdf


The safety rupture disk in a Medical Oxygen valve is built into the base of the valve between the threaded portion that goes into the cylinder and the valve seat. Medical valves may or may not have 165 melt fuses, depending on manufacture.
Lack of a heat fuse may well have led to the rupture of the AMR cylinder. The overpressure disk should have released and depressured, but all components do fail.
Reply With Quote
  #12  
Old 02-22-2018, 09:57 PM
John ED Renstrom's Avatar
John ED Renstrom John ED Renstrom is offline
PCS Member - Elected Director 2017-2020
 
Join Date: Mar 2009
Location: Hot Springs SD 57747
Posts: 11,084
Thanks: 3,919
Thanked 14,353 Times in 6,060 Posts
Groans: 2
Groaned at 3 Times in 3 Posts
Default

in all my years of handling bottled O2 I have never seen a incident with one
__________________
drop in for coffee anytime
Reply With Quote
  #13  
Old 02-22-2018, 10:54 PM
Walter Suiter Walter Suiter is online now
Website Member
 
Join Date: Apr 2017
Location: Rochester NY 14612
Posts: 160
Thanks: 1
Thanked 177 Times in 75 Posts
Groans: 0
Groaned at 0 Times in 0 Posts
Default

Quote:
Originally Posted by John ED Renstrom View Post
in all my years of handling bottled O2 I have never seen a incident with one
Ever seen a pair of geniuses trying to remix a cylinder of C-25 welding gas because it separated sitting in storage?
Reply With Quote
  #14  
Old 04-06-2018, 01:24 AM
Bill Anderson Bill Anderson is offline
Website Member
 
Join Date: Jan 2011
Location: Elmo TX 75161
Posts: 63
Thanks: 7
Thanked 85 Times in 20 Posts
Groans: 0
Groaned at 0 Times in 0 Posts
Default

It didn't say what size cylinder. Most companies today have gone to aluminum D and E cylinders.
Reply With Quote
  #15  
Old 04-06-2018, 10:39 AM
John ED Renstrom's Avatar
John ED Renstrom John ED Renstrom is offline
PCS Member - Elected Director 2017-2020
 
Join Date: Mar 2009
Location: Hot Springs SD 57747
Posts: 11,084
Thanks: 3,919
Thanked 14,353 Times in 6,060 Posts
Groans: 2
Groaned at 3 Times in 3 Posts
Default

It would be a soldered slug in the brass valve. But even if the tank blew there would have to have all ready been a large fire. The sudden realise of that much o2 would cause the fire to flair up not explode. The tank going threw if it was not secured would appear as if there was an explosion. But it would have been fun to watch the last 30 seconds of the event.
__________________
drop in for coffee anytime
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 08:29 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Copyright 2009 - 2018 Friends of the Professional Car Society