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Oxygen Tank Explosion, Hydrotesting

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Mike Bell

Joined: 10 Jan 2006
Posts: 51

Posted: Tue Sep 19, 2006 7:42 pm Post subject: Oxygen Tank Explosion, Hydrotesting

Ben mentioned the oxygen tank explosion at Reno. I was shooting video of his team's gorgeous Grumman Tigercat when I heard the big boom. The picture below shows what that does to a Mustang. 



Jill and Carl at M-14P can now do your hydrotesting. The turnaround is fast and they won't ruin your tanks using the wrong fittings.

Reno 2006 008-E.JPG

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_________________
Mike Bell
Elk Grove, CA
avbell2(at)comcastdotnet

viperdoc(at)mindspring.co
Guest

Posted: Wed Sep 20, 2006 5:48 am Post subject: Oxygen Tank Explosion, Hydrotesting

Ouch, so there is a reason for reading the TO's when servicing these

military aircraft. 

Doc

 	  Quote: 	
		   [Original Message]

 From: Mike Bell <yakflyr(at)comcast.net>

 To: <yak-list(at)matronics.com>

 Date: 9/19/2006 10:53:29 PM

 Subject: Oxygen Tank Explosion, Hydrotesting



 



 Ben mentioned the oxygen tank explosion at Reno. I was shooting video of

his team's gorgeous Grumman Tigercat when I heard the big boom. The picture
	


below shows what that does to a Mustang. 

 	  Quote: 	
		  

 Jill and Carl at M-14P can now do your hydrotesting. The turnaround is

fast and they won't ruin your tanks using the wrong fittings.
	


 	  Quote: 	
		  

 --------

 Mike Bell

 Yak 52

 Elk Grove, CA

 yakflyr(at)comcastdotnet





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=62673#62673





 Attachments: 



 http://forums.matronics.com//files/reno_2006_008_e_314.jpg

Mike Bell

Joined: 10 Jan 2006
Posts: 51

Posted: Wed Sep 20, 2006 1:43 pm Post subject: Re: Oxygen Tank Explosion, Hydrotesting

I heard third-hand that it was a case of improper filling, not necessarily a problem with the tank. There has been much discussion here in the past about where to get hydrotesting and the lack of shops familiar with our tanks. That is no longer a problem.

_________________
Mike Bell
Elk Grove, CA
avbell2(at)comcastdotnet

viperdoc(at)mindspring.co
Guest

Posted: Wed Sep 20, 2006 1:56 pm Post subject: Oxygen Tank Explosion, Hydrotesting

As I understood, it was over pressurized by using the wrong scale to the

tune of 1800 psi, if I heard correctly. Strictly rumor and inuindo at this

point.

Doc

 	  Quote: 	
		   [Original Message]

 From: flir47 <me262pilot(at)comcast.net>

 To: <yak-list(at)matronics.com>

 Date: 9/20/2006 3:35:05 PM

 Subject: Re: Oxygen Tank Explosion, Hydrotesting



 



 Does anyone know why it exploded? Or are we just assuming that it’s

lack of hydro?
	


 	  Quote: 	
		   Tanks have still failed after a hydro.



 --------

 Don’t own a Yak unless you can afford to be married to a maintenance

schedule!
	


 	  Quote: 	
		  



 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=62831#62831

viperdoc(at)mindspring.co
Guest

Posted: Wed Sep 20, 2006 1:59 pm Post subject: Oxygen Tank Explosion, Hydrotesting

One of my YAK-9 buds was about 50 feet from it when it let go at Reno. It

was filling it to the wrong pressure that did the tank and the ass end of

the Mustang in. Luckly, no bystanders.

Doc

 	  Quote: 	
		   [Original Message]

 From: Mike Bell <yakflyr(at)comcast.net>

 To: <yak-list(at)matronics.com>

 Date: 9/20/2006 4:52:32 PM

 Subject: Re: Oxygen Tank Explosion, Hydrotesting



 



 I heard third-hand that it was a case of improper filling, not

necessarily a problem with the tank. There has been much discussion here in
	


the past about where to get hydrotesting and the lack of shops familiar

with our tanks. That is no longer a problem.

 	  Quote: 	
		  

 --------

 Mike Bell

 Yak 52

 Elk Grove, CA

 yakflyr(at)comcastdotnet





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=62853#62853

pilko2(at)btinternet.com
Guest

Posted: Thu Sep 21, 2006 12:01 am Post subject: Oxygen Tank Explosion, Hydrotesting

Yak air tanks can be lethal too !



This one let go on the ground during warm up.



Keep em tested !



kp

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ira.saligman(at)verizon.n
Guest

Posted: Thu Sep 21, 2006 11:07 am Post subject: Oxygen Tank Explosion, Hydrotesting

The tank exploded  because it was over pressurized.  It was an original type tank, which is  low pressure and rarely used today.   

  

 The important questions  are:

  

 from the aircraft  owners point of view: WHo allowed it to be filed w/out checking/confirming what  was going in

  

 from the maintainer's  view: How did someone come to be filling a tank without know for certain the  type of tank it was.  

  

  

  

  

 Ira Saligman

 RPA Treasurer

   

 

 o  610 687  0420 

 c  610 324  5500

 f  215 243 7699

  

 treasurer(at)flyredstar.org (treasurer(at)flyredstar.org)

 isaligman(at)saligman.com (isaligman(at)saligman.com)

Scooter

Joined: 10 Jan 2006
Posts: 155

Posted: Thu Sep 21, 2006 12:36 pm Post subject: Re: Oxygen Tank Explosion, Hydrotesting

I assume that's pilot O2 (what else can it be)?  Seems like a large supply.  I guess these guys are flying up high.  I did a little searching and found two other O2 cylinder explosions in P-51 mustangs over the years (one last year and one in '72).

ben(at)designselect.net
Guest

Posted: Thu Sep 21, 2006 2:39 pm Post subject: Oxygen Tank Explosion, Hydrotesting

It happened in Tom Dwelle's Sea Fury as well.  Pressure indicator rated for

3000 psi, bottle rated for 1000 psi.  When it blew it took Dwelle's fingers

and sent the bottle through the airplane and into the top of the hanger.

Ouch!

--

rvfltd(at)televar.com
Guest

Posted: Thu Sep 21, 2006 3:31 pm Post subject: Oxygen Tank Explosion, Hydrotesting

This is a good point, you should be checking your gauges as well as your

tanks.



New CJ replacement tanks used to be very hard to find but I have managed to

source them out of China once again, but testing is still the lowest cost

way to be sure, this being said make sure you ask the right questions of the

firm doing the testing.  I found one outfit who simply was cleaning and

inspecting the interior of the tanks and did no pressure testing because

they indicated that they did not have the fittings to do so, but were still

willing to say the tank was ok for use.  "let the buyer beware"



Always Yakin,

Doug Sapp



--

viperdoc(at)mindspring.co
Guest

Posted: Thu Sep 21, 2006 5:30 pm Post subject: Oxygen Tank Explosion, Hydrotesting

Hence my first statement on the this thread, Ouch...those Tech Orders really do mean something! 

 Doc

  

 



  

 [quote] ---

L39parts(at)hotmail.com
Guest

Posted: Thu Sep 21, 2006 6:44 pm Post subject: Oxygen Tank Explosion, Hydrotesting

Are we to understand that North American didn't didn't  know about relief valves or rupture disks when they designed the  Mustang?

 [quote]   ---

N13472(at)aol.com
Guest

Posted: Thu Sep 21, 2006 7:39 pm Post subject: Oxygen Tank Explosion, Hydrotesting

In a message dated 9/21/2006 7:45:20 P.M. Pacific Daylight Time,  L39parts(at)hotmail.com writes:

 [quote]   Are we to understand that North American didn't didn't    know about relief valves or rupture disks when they designed the    Mustang?

   [quote]     ---

viperdoc(at)mindspring.co
Guest

Posted: Fri Sep 22, 2006 8:25 am Post subject: Oxygen Tank Explosion, Hydrotesting

Absolutely true. Just checked with my CAF buds at the Dixie wing. Home of the Red Nose P-51. A couple of the original 51 drivers verified that these were low pressure O2 tanks so that those 20 mm rounds and Flak did not bring them down with one pass.

 Doc

  

 



  

 [quote] ---

Ernie

Joined: 11 Jan 2006
Posts: 513

Posted: Sat Sep 30, 2006 8:57 am Post subject: Re: Oxygen Tank Explosion, Hydrotesting

I was having a discussion about this topic yesterday, and was informed that it is a DOT requirement for ANY pressure vessel, regardless of  its application has to be hydro inspected by law. Is this correct?? Also how can I get a hold of Carl and Jill Hayes? I want to have the bottles in the CJ and the L-29 checked.



Ernie

Mike Bell

Joined: 10 Jan 2006
Posts: 51

Posted: Sat Sep 30, 2006 4:38 pm Post subject: Re: Oxygen Tank Explosion, Hydrotesting

Ernie,



Carl and Jill are at (928) 681-4400 in Arizona.

_________________
Mike Bell
Elk Grove, CA
avbell2(at)comcastdotnet

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