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'[TECH] Fuel vapour and mobile phones.'
2011\09\02@224625 by cdb

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I feel this should be EE, but I'd probably get shouted at.

Interesting potential (pun what pun?) debate on Design Spark concerning the subject line.

Not much actually debate as yet, mainly people not answering the topic but...

http://www.designspark.com/content/will-my-mobile-phone-blow-petrol-station

There doesn't seem to be easily findable authoritive works on the interweb, a lot of just repeating received wisdom.

There is this from the Australian Mobile Telecomms Association.

http://littleurl.info/1ax

and this from the Australian Transport Safety Bureau, but they are talking about mobile phones exploding due to fumes and static electricity rather than petrol stations exploding due to phones.

http://www.esdjournal.com/static/Static_Fires.pdf

There is this from a research piece by Kent University UK,
http://littleurl.info/yav

Personally I ignore programs such as featured in the YouTube embeddedment (new verb) for absolute truth, but as a catalyst for further research, they can be OK.
More comment by me in OT.


Colin

--
cdb,   3/09/2011
--




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2011\09\02@232849 by Peter Johansson

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On Fri, Sep 2, 2011 at 10:46 PM, cdb <.....colinKILLspamspam@spam@btech-online.co.uk> wrote:

>  I feel this should be EE, but I'd probably get shouted at.

I've always gone under the assumption that people who gab on their
cell phones while handling high-energy chemicals are likely to be
doing *other* stupid things as well.

-p.

2011\09\02@234143 by cdb

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But that has nothing to do with whether the concern is valid and if valid to what extent?

At an interview as a technician to install and service the forecourt consoles they listed all the things that couldn't be used including soldering irons due to the danger of setting of vapour inside the actual building - obviously the tills, microwave ovens, the remote telemetry to head office, the overhead power cables are all safe - but soldering iron whether by mains or battery wasn't.


Colin
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cdb, colinspamKILLspambtech-online.co.uk on 3/09/2011
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2011\09\03@004839 by Bob Blick

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On Sat, 03 Sep 2011 13:41 +1000, "cdb"  wrote:

> But that has nothing to do with whether the concern is valid and if valid
> to what extent?

Vibrator motor has brushes, so that would instantly exclude it from
being used in an explosive atmosphere.

I know, that is really stretching it when it comes to filling stations
:)

The signs prohibiting them are no longer on our pumps here. Although at
one time there were.

Friendly regards,

Bob

-- http://www.fastmail.fm - Or how I learned to stop worrying and
                         love email again

2011\09\03@110150 by Oli Glaser

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On 03/09/2011 05:48, Bob Blick wrote:
> On Sat, 03 Sep 2011 13:41 +1000, "cdb"  wrote:
>
>> But that has nothing to do with whether the concern is valid and if valid
>> to what extent?
> Vibrator motor has brushes, so that would instantly exclude it from
> being used in an explosive atmosphere.
>
> I know, that is really stretching it when it comes to filling stations
> :)
>
> The signs prohibiting them are no longer on our pumps here. Although at
> one time there were.
>
> Friendly regards,
>
> Bob
>

I always wondered why they didn't ban nylon car seats and long hair too...

2011\09\06@113559 by Dwayne Reid

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At 09:41 PM 9/2/2011, cdb wrote:

>At an interview as a technician to install and service the forecourt
>consoles they listed all the things that couldn't be used including
>soldering irons due to the danger of setting of vapour inside the actual
>building - obviously the tills, microwave ovens, the remote telemetry to
>head office, the overhead power cables are all safe - but soldering iron
>whether by mains or battery wasn't.

The spark generated inside the trigger switch that controls AC-powered Weller Soldering Guns is probably an order of magnitude higher than the minimum necessary to ignite gasoline fumes that are proper concentration of vapor to air. (Whew - that's a long sentence!).  On the other hand, I don't know many techs who use Soldering Guns for general electronics use.

But I fail to understand where the problem might be when using a non-switching-type soldering iron.  Even something like a Metcal station should be OK, so long as you aren't operating its power switch (which also generates sparks).

dwayne

-- Dwayne Reid   <.....dwaynerKILLspamspam.....planet.eon.net>
Trinity Electronics Systems Ltd    Edmonton, AB, CANADA
(780) 489-3199 voice          (780) 487-6397 fax
http://www.trinity-electronics.com
Custom Electronics Design and Manufacturing

2011\09\07@070833 by Electron

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The stechiometric ratio of "gasoline smell" is so lean than it would be VERY hard even for a spark plug to ignite anything.



At 06.48 2011.09.03, you wrote:
{Quote hidden}

>

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