I Googled HH48 but couldn't get any hits. Where can I get that?Don't know what other people do, but I store my powder in a large military green ammo canister. This ammo box is air tight and prevents moisture and contaminates from entering the can. I also store an HH48 desicant block in the can for added protection. Also the powder is protected from sparks or other sources of ignition.
Regarding powder burning inside a plastic container, not sure about that one
I am a process safety engineer and in my job I deal with fires and explosions in the industrial environment. I also design explosion protection and venting systems for large dust handling equipment.
Yes, an explosion is possible by an electrostatic discharge. The charge is generated when two materials are in relative motion to each other and they make and then break contact. This would happen during the "pouring from container to container" in our case.
A charge may also be generated if electrically isolated conductive objects come in contact with, or are near other charged objects. This is known as inductive charging. Static electricity is typically high voltage, low current (micro-amps), the energy is measured in milli-Joules.
An isolated conductor or a non-conductor accumulates a sufficient amount of charge, and approached by a conductive object at a lower energy state, there will be a spark. If the spark has sufficient energy and there is an explosive atmosphere present, (particle size small enough AND dispersed) then an explosion may occur.
Keep in mind "atmosphere" with powders dispersion, is key; no cloud of dust/particles.
Combustible dusts may require as little as 1 mJ of discharge energy for spark ignition. The potential difference must be around 1500 volts to generate an ignition spark. The spark discharge from a person can be as high as 15 mJ just from walking across carpet on a very low humidity day!
Long story short - make contact with containers when pouring, but in reality the volume we deal with and the granulation size of the powder would most likely NOT provide the required dispersion, to create dusting required to support electrostatic induced combustion.
Not a very good idea.Don't know what other people do, but I store my powder in a large military green ammo canister. This ammo box is air tight and prevents moisture and contaminates from entering the can.
Yeah... those are called powder lockers. Lots of the old reloading books make mention of storing all of your powder containers in a wooden powder locker.What about all the people that say you should only keep powder containers in a wood box? QUOTE]
That's a new one on me.
Never understood that one either... if you had a fire, wouldn't the wood just be more fuel for a fire? How much protection from the powder burning would charred wood be? :biglaugh: