Teardown of an X-Ray machine, quite old video ? - Page 1
Forum section: electronics / general

author: Unknown
author_rank: Unknown
timestamp: October 24, 2015, 08:27:58 pm
content: I was browsing Dave's YouTube channel for a teardown video I remember he made, it was some kind of x-ray machine I think and he at some point was pouring out this gross looking oil from parts of it. Can't find it, I remember it was quite fun, it was a long time ago so maybe it was removed.Anyway, greetings to all and thanks for any clue.martinR

author: PA0PBZ
author_rank: Super Contributor
timestamp: October 24, 2015, 08:38:01 pm
content: I can't remember Dave ever doing that, but the one that comes to mind is this:

author: hamdi.tn
author_rank: Frequent Contributor
timestamp: October 24, 2015, 08:52:31 pm
content: you mean mike video ' mikeelectricstuff'

author: PA0PBZ
author_rank: Super Contributor
timestamp: October 24, 2015, 08:54:00 pm
content: Quote from: hamdi.tn on October 24, 2015, 08:52:31 pmMaybe, but I went for the oil pouring...

author: Andy Watson
author_rank: Super Contributor
timestamp: October 24, 2015, 09:03:19 pm
content: I remember a video where somebody tore-down a big, oil-filled x-ray transformer - required lifting equipment to take it a part. I think it was one of the "maker" community that made the video. Chris Boden maybe?Edit: This is the one I was thinking of:https://youtu.be/gZtSE6OJGBc

author: Unknown
author_rank: Unknown
timestamp: October 26, 2015, 01:56:50 am
content: Thanks a bunch guys, those were some really interesting videos in themselves, definitely worth a view. But not what I remember. The video I remember was Dave for sure, I guess he was in his old garage lab as I doubt he'd want to go pouring out oil in his nice new clean lab with smart carpeting.I'll keep ploughing through the older videos and see if it is hidden somewhere. If it wasn't Dave then it really is a case of my memory playing tricks!Thanks again for the replies, nothing like a mystery from far back in one's memory

author: promacjoe
author_rank: Regular Contributor
timestamp: October 26, 2015, 02:27:07 am
content: Note: if you ever find an x-ray machine and want to tear it down, do your homework first. Some of the old x-ray machines contain a radioactive powder. One such machine contaminated several blocks, and affected hundreds. I don't remember where it happened, but I believe it was India. it was a documentary on the PBS channel.Be Careful.

author: helius
author_rank: Super Contributor
timestamp: October 26, 2015, 02:33:37 am
content: X-ray machines do not become radioactive. The X-rays are produced by scattering when high-velocity electrons in a vacuum tube hit a target. The greatest danger when handling these machines is if the safety interlocks are defeated, or the beryllium window in the tube is broken releasing beryllium dust.You are thinking of incidents when radiotherapy machines (which are made for treating cancers, not for imaging) were broken into, releasing their radioisotopes.https://en.wikipedia.org/wiki/Goiania_accident

author: amyk
author_rank: Super Contributor
timestamp: October 26, 2015, 03:08:16 am
content: Mike's x-ray machine teardown does contain oil-pouring.

author: SteveyG
author_rank: Unknown
timestamp: October 27, 2015, 07:50:35 am
content: Pretty sure Dave has never done an X-ray video.

author: rickselectricalprojects
author_rank: Regular Contributor
timestamp: October 27, 2015, 08:09:52 am
content: i would love to get my hands on an xray transformerbut its probably best that i don't get one.

author: crispy_tofu
author_rank: Super Contributor
timestamp: October 27, 2015, 08:13:40 am
content: Quote from: SteveyG on October 27, 2015, 07:50:35 amYep - to my knowledge, he hasn't. Would like to see one on the blog though!Quote from: rickselectricalprojects on October 27, 2015, 08:09:52 amDon't lick it!

author: Nermash
author_rank: Frequent Contributor
timestamp: October 27, 2015, 08:28:16 am
content: Quote from: martinr on October 26, 2015, 01:56:50 amYou might be thinking about Photonicinduction's video on repair of one of his HV transformers?

author: dr_dan
author_rank: Contributor
timestamp: October 27, 2015, 02:16:27 pm
content: Quote from: promacjoe on October 26, 2015, 02:27:07 amAre you thinking of this (actually a radiotherapy source):https://en.wikipedia.org/wiki/Goi%C3%A2nia_accident

author: rickselectricalprojects
author_rank: Regular Contributor
timestamp: November 05, 2015, 10:59:15 am
content: Quote from: crispy_tofu on October 27, 2015, 08:13:40 amif you licked that:there might be a slight chance you would die

author: Psi
author_rank: Super Contributor
timestamp: November 05, 2015, 11:12:12 am
content: Another thing to worry about is if the oil contains PCBs (not circuit boards).It's really nasty stuff.

author: rickselectricalprojects
author_rank: Regular Contributor
timestamp: November 06, 2015, 04:00:08 am
content: Quote from: Psi on November 05, 2015, 11:12:12 amwhat exactly are PCBs?i see capacitors from microwaves and start caps that say "no PCBs"

author: SNGLinks
author_rank: Regular Contributor
timestamp: November 06, 2015, 04:07:12 am
content: Quote from: rickselectricalprojects on November 06, 2015, 04:00:08 amhttps://en.m.wikipedia.org/wiki/Polychlorinated_biphenyl

author: helius
author_rank: Super Contributor
timestamp: November 06, 2015, 04:25:22 am
content: They were used in transformer oil for their dielectric and nonflammable properties. Preventing corona breakdown and arc fires in HV transformers is a very good thing. Pity about the health effects.