Static electricity

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Peterla
Posts: 322
Joined: Tue Dec 14, 2010 10:49 am
Location: Barossa Sth Australia

Static electricity

#1 Postby Peterla » Thu Apr 23, 2015 10:27 am

I am looking into storing powder charges in the 100 plastic test tubes I have in stock.
The reason for this is when we have large shoots like the queens and I need to reload at site I can take measure powder load in the tubes and just pour into the cases.
A concern I have is that the powder may stick into the tubes with static.
Has anyone done this before or got any ideas on how to limit the static during transport

Thanks

Peter

DMC
Posts: 58
Joined: Thu Nov 15, 2012 8:17 pm
Location: Melbourne

Re: Static electricity

#2 Postby DMC » Thu Apr 23, 2015 10:36 am

I think i read somewhere in Bill Hamblys book that he washes the test tubes with detergent but dosn't rinse them ? Id have to read it again, someone else may have a copy close or another idea

Cheers
Darren

Peterla
Posts: 322
Joined: Tue Dec 14, 2010 10:49 am
Location: Barossa Sth Australia

Re: Static electricity

#3 Postby Peterla » Thu Apr 23, 2015 11:21 am

Thank's for the quick reply Darren.
Keen to see what others have to say about that.

Peter

Tim L
Posts: 889
Joined: Mon May 19, 2014 7:11 pm
Location: Townsville

Re: Static electricity

#4 Postby Tim L » Thu Apr 23, 2015 7:28 pm

Not sure what the rules are in SA but that's not strictly legal in QLD, it's easier to just put it in a case!

QLD Explosives regs

89 Requirements for storing propellant powder
A person storing a propellant powder must—
(a) store the explosive in—
(i) its original packaging; and
(ii) a secured area;.....

Tim N
Posts: 1336
Joined: Fri Jan 25, 2013 8:18 pm
Location: Branxton NSW

Re: Static electricity

#5 Postby Tim N » Fri Apr 24, 2015 8:07 am

Peter
I have taken measured powder charges in small plastic screw top containers to a queens before and it worked fine.
Most powders are in plastic containers so I assume it to be safe.
We don't rise to the level of our expectations, we fall to the level of our training. Archilochos 680-645 BC

Ken Melgaard
Posts: 128
Joined: Fri Jul 01, 2005 7:32 pm
Location: West Wodonga, Vic

Re: Static electricity

#6 Postby Ken Melgaard » Sun Apr 26, 2015 1:58 pm

Hi Peter
I have doing this for a long time with no problems with granules sticking in the vials, the graphit coating on the powder is there to disapate static electricity and it's a great way to have weighted CW ready reload when you don't have enough cases
Cheers
Ken Melgaard

Cliff Austen
Posts: 175
Joined: Wed Jul 06, 2005 11:18 am
Location: Sydney NSW Australia

Re: Static electricity

#7 Postby Cliff Austen » Mon Apr 27, 2015 10:56 am

The solvents such as xylene, toluene, mineral turps etc have antistatic agents added to prevent static build up when they are being poured into mixing tanks. The tanks also have earth straps attached. If this is not done the the solvent builds up a static head and a spark discharge may occur causing an explosion.
The same situation could happen when pouring powder into containers that are prone to static electricity build up.
I strongly recommend that if you do know if static electricity could be a problem then DON'T GO DOWN THAT PATH.
Cliff. Industrial Chemist, Paint Industry for 44years.

Peterla
Posts: 322
Joined: Tue Dec 14, 2010 10:49 am
Location: Barossa Sth Australia

Re: Static electricity

#8 Postby Peterla » Tue Apr 28, 2015 10:30 am

Thanks for all the comments.
I will have to give it some serious thought
Maybe even look at Glass tubes

Pete


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