CRT implosions

[J.C. Wren]

Some useful information here: 
http://repairfaq.ece.drexel.edu/sam/crtfaq.htm#crtcir

    --jc

Jules Richardson wrote:

> Tony Duell wrote:
>
>> At least one person here has used a thin wire to cut the bonding, 
>> then removed the front piece of glass, cleaned it up, and rebonded 
>> it. It sounds like a dangerous project to me, not only because the 
>> CRT could implode while you're cutting it, but also if you don't get 
>> the bonding strong enough when you put it back together and the CRT 
>> then subsequnectly implodes, the results would be very unpleasant.
>
>
> That does beg the question of under what conditions a CRT implodes. Do 
> age-related implosions happen (or implosions for other reasons other 
> than mechanical shock)? I've never heard of a CRT imploding, except 
> for when physical damage has occured to it - but presumably it does 
> happen.
>
> In other words what are the risks - or is it a case of 
> over-engineering in the first place to make sure (to a reasonable 
> extent) that there are no problems out in user-land?
>
> Also curious as to the extent of the outward blast / debris field 
> (that sounds horribly technical but I can't think of a better phrase!) 
> when a CRT does implode. I'd *assume* glass just extends outward a 
> foot or two, but happy to be corrected there! (of course an explosion 
> would be a rather different matter)
>
> Actually, is the faceplate actually there for dsamage limitation 
> reasons - or in fact there to help prevent implosion in the first 
> place from mechanical shock? I imagine that coupled with the sealant 
> layer it provides a reasonable damper if the CRT is dropped with 
> face-down.
>
> Any people on the list involved (past or present)with CRT manufacture 
> who can provide more information?
>
> cheers
>
> Jules