Fire damage

OK... I was very tired and I was called out to fix the computer again...


Unfortunately... I had run out of airduster... Needed to reseat the RAM, etc. The thing had a major dust problem...

I grab the closest thing I can find... A can of butane. After jury rigging a pair of pliers on the can to act as a trigger, I started dusting the motherboard...


Minor fire later...


The onboard video no longer works... I get an AGP card in there and it boots again... Unfortunately I discovered that the onboard video, serial ports, and parallel port are no longer working. Also... the USB is acting up as well.


Any ideas?

minor fire later...do explain.

My thought though....get a new one.

Thankfully it's not mine.


Unfortunately, it's the main computer I use.

Quote:

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Minor fire later...

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My guess ... Light flamable gas ... static electricity and/or Condensators trickling their captivated electricity ... Not a good mix.

I'm with Noia ..get a new motherboard ...you will have problems using that anyway (if it works at all).

Bummer though :(

C.

Hmmmm,

Not something that I would have done, although I must admit that the fire does surprise me.

My thinking would be the principles of refrigeration, latent heat and all that. Liquid butane is damn cold, and quite likely to damage components, particularly as they are at room temperature to begin with. Let's face it, ALL liquid gases are damn cold.

Your airdudster is compressed, not liquid.

I am afraid that you need a new MoBo

:(

Too bad you didn't have a camera on hand. That video would
be worth money.
:cool:

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Originally posted here by nihil
Your airdudster is compressed, not liquid.

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Yes it is, its liquid CO2. If you acctualy use the air-dusters close-up to something you'll acctualy see small crystals form for a split second. The other dead give away is that the can goes "sqwulp" when you shake it :p

turn the crap upside down and spray it next time Noia and tell me what you see ;)

Never doing that again.

NEVER.


But it was really cool. I hooked up a ps2 mouse, and everything works normally. I'm just going to pretend that anything that doesn't work broke on its own.

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I'm just going to pretend that anything that doesn't work broke on its own.

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Thats the way to go lol :D

Errrrr..............

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Yes it is, its liquid CO2

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NO! not allowed, CO2 is a hazchem, you cannot supply that under the description of "air" in the UK, and I would imagine the EU?...........totally illegal?

An "air duster", MUST contain compressed air, not carbon dioxide.............

Imagine you go to a garage and fill your tyres (tires) with CO2 rather than air?

:eek:

I did a little google and no they do not have CO2 in them. Air dusters, or at least the ones i looked at, contain a chemical called Difluoroethane, and yes it is compressed into a liquid. Here is a little info on the chem


General
Synonyms: difluoroethane, Freon 152, Freon 152A, halocarbon 152A
Use: aerosol propellant, refrigerant (use now largely discontinued)
Molecular formula: C2H4F2
CAS No: 75-37-6
EC No: 200-866-1

Physical data
Appearance: liquefied colourless gas under pressure
Melting point: -117 C
Boiling point: -25 C
Vapour density:
Vapour pressure:
Specific gravity: 1.012 g/cm3 at 26 C
Flash point:
Explosion limits:
Autoignition temperature:
Critical Temperature: 113.7 C
Critical Pressure 44.9 atm.

and after a little more looking i found that the di form of this chem is not as safe to use, and is actually flamable even though it is in air dusters, but the tetra is a lot more common and stable

tetrafluoroethane

General
Synonyms: HFC 134a, fluorocarbon 134a, unsymmetric tetrafluoroethane, norflurane, histofreeze 2000
Molecular formula: C2H2F4
CAS No: 811-97-2
EC No: 212-377-0
Physical data
Appearance: colourless gas or cryogenic liquid with an ether-like odour
Melting point: -101 C
Boiling point: -26 C
Vapour density:
Vapour pressure:
Density (g cm-3):
Flash point:
Explosion limits:
Autoignition temperature:
Water solubility: insoluble

Stability
Stable. May cause damage to the atmosphere. Incompatible with active metals, strong oxidizing agents.
Toxicology
May be harmful by inhalation. Chronic exposure may cause reproductive damage. High levels may cause CNS damage. Contact with liquid may cause skin burns. Asphyxiant at high concentration.
Toxicity data
(The meaning of any abbreviations which appear in this section is given here.)
IHL-RAT LC50 > 500,000 ppm
IHL-RAT LC50 567,000 ppm

Risk phrases
(The meaning of any risk phrases which appear in this section is given here.)


Transport information
Non-hazardous for air, sea and road freight.
Environmental Information
Degrades extremely slowly in the environment.
Personal protection
Adequate ventilation. Protective gloves if handling cryogenic liquid.

The stuff i have is the tetra.... something fun to do, other thatn turn it upside down and spray your coworkers arses till they yell and chase you down, is to take a small test tube like container and spray the crap upside down slowly into it.

This will build up the liquid we are all discussing and then you can drop crap in it to get it cold or throw the whole thing at someone. The stuff will bubble the entire time its in it too

***WARNING*** this crap can cause frostbite etc so try to avoid direct skin contact.