[Diy_efi] Re: diy_efi Digest, Vol 10, Issue 18

[Garrett P. Beauregard]

With regards to Bill's item 1 (below):

It's called the ballistic test. The other spectacular test is the bonfire
test. See this page for images of both:

http://www.powertech.bc.ca/cfm/index.cfm?It=901&Id=0&Se=13

In many cases, a hydrogen tank at full pressure that is punctured will never
ignite. If it ignites, it often extinguishes because of the high-velocity
jet of gas. Same principal as putting out oil well fires with TNT.

We recently had a fire at a gasoline pump at a client's facility. The fire
department in town says that they respond to one fire like these at least
once per week. It's more common than you think.

We've just had 90 years or so to get used to carting around tanks full of
liquid napalm.

Garrett

-----Original Message-----
From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org]On
Behalf Of Bill Washington
Sent: Monday, July 19, 2004 9:53 PM
To: diy_efi at diy-efi.org
Subject: [Diy_efi] Re: diy_efi Digest, Vol 10, Issue 18


Gentlepeople,
    A couple of comments on hydrogen:
1. Hydrogen is a safe fuel - I have seen a test where a large
pressurised cylinder of hydrogen was shot with a high velocity incendary
projectile (bullet) - result: a small hole jetting hydrogen which had
ignited and burned in a single verticle flame until the cylinder was
exhausted.
    Same test on cylinders of LNG and LPG result: instantaneous very
large, very violent explosion.
    The Scientific reason: Hydrogen being lighter than air dissapates
upwards very quickly without forming a large cloud of an explosive
air/fuel mixture.
       LNG and LPG on the other hand are heavier than air and very
quickly form an explosive air/fuel mixture - an un-ignited leak will
'puddle' on the ground just waiting for a spark! - VERY dangerous!

    2. Someone mentioned the Hindenderg - leaking hydrogen was NOT its
downfall! - I have seen a recent rigouous scientific investigation into
the cause of that disaster - It's fabric covering ignited  - observe the
film footage, the airship stayed horizontal and stable until about half
the airship was in flames - some of the original fabric covering was
found intact at the crash site - yes even after all this time - and was
analysed - it was doped and coated with powdered aluminium and other
chemicals to be heat reflective, unfortunately the formula used bore a
remarkable similarity to the solid fuel used in the space shuttle's
solid rocket boosters!!!!! - one very large bomb!!! - From the original
designs the large fabric sections were not well earthed to the frame -
The air was highly charged at the time of Himdenberg's arrival - stormy
- and static discharges were observed.
    A small  static discharge was applied to a section to the recovered
fabric and it immediatly ignited spectacularly and violently.
The evidence shows the the airship was well alight before any of the
hydroden bags ruptured - the airship was doomed and the same disaster
would have ensued if it was filled with helium! - Also the Zepplin
company 'mysteriuosly' discontinued use of this type of fabric covering
immediately, though the reasons were sealed and certainly not
publicised! - their reputation was shot anyway, but the real reasons and
their culpability was suppressed!

Regards
Bill

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