Search found 1398 matches: safety

Searched query: +safety

by Silviu Tamasdan
Thu Nov 16, 2017 12:08 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Neutron Scintillation Tube/Counter
Replies: 33
Views: 1285

Re: Neutron Scintillation Tube/Counter

... It's all good. This BC412 detector of mine was never intended for neutrons or for fine discrimination of gamma spectra. I bought it for background/safety checks. I hope that it may also be useful in future prospecting trips (it's just at the edge of what I would call too bulky for a portable detector).
by Rich Feldman
Wed Nov 15, 2017 3:40 pm
Forum: Please Introduce Yourself
Topic: Greetings!
Replies: 15
Views: 675

Re: Greetings!

... drives an analog meter movement. Nothing super-sensitive about the meter -- it just has a coil wound for low voltage instead of low current. (Gas safety valves for pilot lights are held open by a solenoid using voltage from a single TC junction -- tens of mV.)
by Dennis P Brown
Sun Nov 12, 2017 4:51 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Fusor chamber and electrode cooling
Replies: 0
Views: 248

Fusor chamber and electrode cooling

... cool to the touch (of course, all HV is turned off, before I ever touch the electrode - it is fully insulated but I never trust depending on that safety measure alone!) After turning off the HV I investigated various regions of the fusor. I noticed parts well away from my cooling coil system that ...
by Silviu Tamasdan
Fri Nov 10, 2017 3:03 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Criticize my HV supply design
Replies: 26
Views: 954

Criticize my HV supply design

... and calculate for max temperature of 100C. From previous failures I have acquired the habit of over-engineering things. This not only gives me a safety factor, but also allows me to upgrade stuff in place if I need higher specs later. Some speculations later in this post regarding upgrades. So ...
by Dennis P Brown
Mon Oct 30, 2017 5:11 pm
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Precipitator power supplies?
Replies: 29
Views: 1755

Re: Precipitator power supplies?

... One cannot expose either one's self (if one is sane) and most certainly not innocent bystanders to dangerous levels of radiation. So, that is a safety issue you must address now before you operate that power supply in a manner that can create x-rays - maybe it will turn out that the supply is ...
by Shireesh Apte
Mon Oct 30, 2017 2:29 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Precipitator power supplies?
Replies: 29
Views: 1755

Re: Precipitator power supplies?

... dangerous; but as the man said - D-day might have been under entirely different circumstances had Eisenhower waited for the weather to clear. The safety of my students is my primary concern and I take that very seriously - even with the more zealous (Instant gratification) types - as I seem to ...
by Dennis P Brown
Sat Oct 28, 2017 6:44 pm
Forum: Images du Jour
Topic: Old Welch 1400 reassembly
Replies: 2
Views: 252

Re: Old Welch 1400 reassembly

... to open and then clean! Really nice how you are partly rebuilding it and making the system "like - new" again. I prefer the belt drives (with a safety cage installed) since it makes service easier compared to current single piece systems - when the motor goes on these newer type pumps, only ...
by Richard Hull
Mon Oct 23, 2017 4:06 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Fusor Safety Note
Replies: 1
Views: 311

Re: Fusor Safety Note

Thanks for the report Dan. Fusors not built to withstand the rigors of fusion should not attempt fusion. In this case, as you note, over 25kw was poured into the system. Still, it is important to continually emphasize that no fusion or even high power demo fusor work should be attempted in a glass o...
by Dan Knapp
Sun Oct 22, 2017 9:38 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Fusor Safety Note
Replies: 1
Views: 311

Fusor Safety Note

It has been regularly noted here that it is hazardous to operate a glass system at fusion producing power levels since an electron/ion beam impacting upon the glass wall can lead to wall failure. I had not previously heard of any such wall failure risk for a stainless steel fusor. At the Osaka IEC w...
by Dennis P Brown
Sun Oct 22, 2017 2:05 am
Forum: Please Introduce Yourself
Topic: Hello
Replies: 1
Views: 261

Re: Hello

... (but important) part of a fusor system. The power supply is very difficult for many to obtain (and is extremely lethal so learning high voltage safety is critical.) Detecting neutrons is a very complex task unless one just buys a turnkey system or a bubble dosimeter (special order and a only ...