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ATTN: People with big x-ray tubes.

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Adam Munich

Wed Dec 08 2010, 01:58AM

Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242

A nightlight made out of one would be petty beast. With the heater fed 1/2 its nominal ratings it should last a long time too.

Proud Mary

Wed Dec 08 2010, 07:22AM

Registered Member #543 Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992

Grenadier wrote ...

A nightlight made out of one would be petty beast. With the heater fed 1/2 its nominal ratings it should last a long time too.

An illuminating idea...

radhoo

Wed Dec 08 2010, 10:57AM

Registered Member #1938 Joined: Sun Jan 25 2009, 12:44PM
Location: Romania
Posts: 700

Grenadier wrote ...

A nightlight made out of one would be petty beast. With the heater fed 1/2 its nominal ratings it should last a long time too.

I can't follow. What do you understand by "nightlight"?

Adam Munich

Wed Dec 08 2010, 11:31AM

Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242

Fabio

Fri Dec 10 2010, 12:12PM

Registered Member #122 Joined: Fri Feb 10 2006, 12:55PM
Location: Milano Italy
Posts: 148

Giant tubes can be really cool if recycled as paperweight, ornament, nightlight or electric heater (yes, really big tubes can dissipate many hundreds of watts in the filament and can be used during winter!) but can pose an high risk of implosion.

BIG Xray tubes (as the ones used in CAT scanners) can literaly become a fragmentation bomb if incidentally broken and the shattered pieces of glass can cause many damages on human body including permanent eye damages.

I had a bad experience some years ago, i incidentally drop a small oscilloscope tube on the floor causing his implosion.

My legs was hitted by many tens of small pieces of glass causing many wounds; about a dozen of pieces remained embedded in my skin necessitating the subsequent removal.

Luckily the tube was small, the glass thikness was consequently small and the implosion took place on the ground, only small pieces were generated and my eyes were not involved, but a giant Xray tube have a thicker glass and a nightlight is usually mounted to the head height........ definitely........ an Xray nightlight is cool but isn't recomended!!!

Ciao!
Fabio.

Adam Munich

Fri Dec 10 2010, 08:37PM

Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242

So don't break it! Don't forget that crt TVs are an implosion hazard too. So long as you don't break it you'll be fine.

I highly doubt they'll break themselves too. After all, they are at high vacuum and any weakness would surely have caused it to fail in the machine it was once in.

Fabio

Fri Dec 10 2010, 09:39PM

Registered Member #122 Joined: Fri Feb 10 2006, 12:55PM
Location: Milano Italy
Posts: 148

A television tube is fitted with an integral implosion protection system, (the metallic band fixed on the edges of the screen, in concert with the rounded structure of the front glass can temporarly mantain the integrity of the front screen during an implosion; the danger remains only inside the television where the plastic case can contain the shattered glasses) also is almost impossible to incidentally break the front of a television CRT because the front glass is rounded and really thick.

at the contrary, an xray tube haven't any protection against the effects of an implosion and the glass is thin enough to break if you accidentally hit with a broomstick..... remember, a television tube is designed to be used with the front screen permanently exposed to unskilled (and sometimes unwary) people and on the contrary, only trained people with proper personal protective equipments and proper procedures should handle and replace an xray tube.

Trust me, i have about 25 different xray tubes (someone giant) and i know their dangers.

Adam Munich

Fri Dec 10 2010, 10:01PM

Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242

Problem solved? If the tube were to break, this would absorb a lot of the energy.

Fabio

Fri Dec 10 2010, 10:33PM

Registered Member #122 Joined: Fri Feb 10 2006, 12:55PM
Location: Milano Italy
Posts: 148

yes, a dome can easily protect the tube against unwanted shocks that can break the tube and cause an implosion.

A self-implosion without any external trigger is very-very-very unlikely, but even if it happening the plastic dome can protect from glass shrapnel.

Mattski

Sat Dec 11 2010, 03:44AM

Registered Member #1792 Joined: Fri Oct 31 2008, 08:12PM
Location: University of California
Posts: 527

Fabio wrote ...

a television tube is designed to be used with the front screen permanently exposed to unskilled (and sometimes unwary) people and on the contrary, only trained people with proper personal protective equipments and proper procedures should handle and replace an xray tube.

I can attest to the durability of TV's from the front side. When my brother was moving out of a dorm once he had a CRT TV in a shopping cart, which toppled over at some point in the process and fell on its face. The only damage was some pitting to the glass which could barely be seen and some slight cracking of the plastic frame.

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