Date: Mon, 16 Aug 2010 12:23:52

Author: Wayne Easterling

Subject: Re: Demo safety PIRA committee


I do think you are on to something. Last year the university safety
guys wanted to hang me for doing the CO2 cart demo. I convinced them it
was safe with the proper precautions and that it has been done for years
in 100's of schools without a problem. However, with a safety rating I
very easily could have lost my case.


-----Original Message-----
From: [] On
Behalf Of Jerry Hester
Sent: Monday, August 16, 2010 11:53 AM
Subject: Re: [tap-l] Demo safety PIRA committee

Hi David,
Perhaps it would be better to think in terms of a set of guidelines
and warnings for the safe use of demos.
I include foot switches, gloves, goggles, etc. with both verbal and
written warnings and instructions for many demos.
A danger ranking would almost guarantee a class of demos being outlawed.

Jerry H.

At 02:05 PM 8/16/2010, you wrote:
>Hi Stephen,
>Funny you should mention this, and it's also interesting that one of
>our first (major) accidents is in using H and H/O balloons,
>something I never thought of as an area of concern. Certain
>inherent danger, of course, but I had never heard of trouble with
>these till now. The discussion about these and the cause of the
>spark/explosion has certainly been interesting.
>I was actually hoping we could make an effort and produce some
>guidelines for laser pointer safety. They seem to getting more
>powerful each day and it's gong to take only one case of laser
>pointer blindness to keep them out of the classrooms. And I'd hate
>to lose them as a teaching tool, as they are great in many
>experiments & demos when used carefully.
>Irons, Stephen wrote:
>>Hello all,
>>I wonder if perhaps we might try and get out ahead of the
>>repercussions (if any) from Dale's accident and form a subcommittee
>>(Perhaps part of the DCS committee) and evaluate some of our more
>>popular demos for safety. A rating system perhaps? I'm a little
>>ambivalent because I believe the best protection is a good
>>understanding of what you're doing. But even the best of us can
>>make mistakes or be lulled into a sense of security because nothing
>>has ever happened doing things the same old way.
>>Other potential side effects is administrations might then just
>>proclaim an entire class of demos off limits, rather than perhaps
>>just banning one or two.
>>What do you all think?