When NGV Gas Exploded

Mrericlee · July 27, 2008

Gross pics.. beware...

http://syafiza.wordpress.com/2007/02/05/wh...v-gas-exploded/

Best_ctzn · July 27, 2008

Any info besides the pictures? Good to let fellow MCFers know what actually contributed to the unfortunate event. Not good to jump to conclusions based on pictures though they say a thousand words! Can imagine many CNG owners will stay further away during refilling.

CNG does make car ownership cheaper but seems the costs are quite a bit. Long queue and ever increasing price not withstanding, the special tax and the explosion fear is always loomimg. In this world, there is really no free lunch.

Mrericlee · July 27, 2008

Nope (more info)... I found it on the web trying to do some research on if I would like to convert to CNG....

I am into alternative fuel but in this case... may stick to fuel cell or electric motors. I don't want a bomb in my trunk.

Fcw75 · July 27, 2008

There's a description below the pics:

Dear All,

The NGV explosion happened in Brazil, Rio De Janeiro, at a local NGV Station. The report was as followed (as we received the report as Safety Inspectors):

The explosion was caused by an additional Air Compressor Tank Cylinder (Tank 2) attached to the car. Initially, the air compressor tank (rated at 3,000psi) withstood the pressure from the Dispenser (at 3,500psi). The duration of the brutal punishment on the air compressor is unknown.

At one point, the welding lines of the air compressor tank started to crack or give way. Thus, the compressor tank blown open at all the crack point, and tank opened up at its welding line. You can notice the clean and straight opening line of the metal.

The 3,000psi escaped at high speed, blowing away the boot cover and everything blocking its way. The driver was killed by flying debris (or his vehicle metal) as well as the Positive Shockwave (or Blastwave).

No fire was reported, and escaping gas went upwards. In short, the driver was using a welded tank, instead of high pressure SEAMLESS (no welding) tank.

To view how SEAMLES NGV Cylinder sare made, please go to website below (and You need to be really patient as the video file is very large, and take alot of time to up. Just go there and browse other website. It will PLAY automatically when it is ready.)

http://www.ngv.com.my/default.asp?pageid=1...ageid=470&cac=0

Be Safe! DO NOT Use any cylindr, except for CNG only.drx

Application9999 · July 27, 2008

the report read that the drive install a welded tank..in place of a seamless tank which should be use for CNG...probably from some '' road side'' workshop..

Best_ctzn · July 28, 2008

Thanks for the highlight. [thumbsup]

I went through the first few pictures and was too nauseas to look at any text accompanying the pictures. [dizzy]

Leumas23 · August 1, 2008

Apparently people can run their car on water.....

http://run-the-car-onwater.blogspot.com/

Would this explosion have occurred with a water powered car?

But it probably would have been much cheaper and lighter to run.

PointyEwe · August 1, 2008

It does not matter if the tank is seamless or plate rolled welded type. You can order a welded pipe straight off from the mill with the same mechanical performance as a seamless one.

With a welded joint, you either need to increase the thickness or apply the required non destructive examination or both.

To make the welded joint explode, it must be a really poor quality weld.

I highly doubt this will ever happen in Singapore with the mandatory certification from LTA.

Dlar2 · August 9, 2008

Yes! Singapore this kind o fthings would not happen, garment will take care of it.......................until Tok stroll over to Malaysia without passport [thumbsdown] .............Mas Selamat..... [sweatdrop] .......then 2 person run out from court to the road [furious] ................then father travel on son's passport [smash] ..............but the minister still standing there [shakehead] and Singaporeans still [nod] [laugh] [lipsrsealed]