HAZARDOUS MATERIALS
When Good Things Turn Bad
We are a society
accustomed to the benefits of chemistry and innovations in delivery of substances. As
a result, we’ve got hundreds of formulations in spray bottles, aerosol cans,
fuel containers, and combined in pastes, waxes, gels and fluids, and bagged as
granules, flakes and pellets. We have become so used to all these materials
that we tend to take most of them for granted and either forget, or have never
realized, that some of them can be extremely hazardous in the wrong situation.
You’ve probably
got a good collection of liquids and “semi-solids” on your shelves. Alcohol,
alcohol-based liniments and rubs, hoof tars, tack cleaning supplies, veterinary
compounds, and “stop-chew” products can be found in any barn. Now is the
time to take a look at the conglomeration of containers on your tack room shelves,
in the maintenance area, in the washrack, in the medicine cabinet, and in any other
locations in your barn where you keep compounds and solutions (including medicines)
that could be hazardous if mishandled.
Pick up every container and read each label. Here’s what to look for:
- Are you storing these products as the manufacturer instructs?
- Have expiration dates been exceeded?
- Even if there is no expiration date marked on the container or its label, has the solution separated into layers?
- Has a gel dried out or become crumbly?
- When was the last time you used a particular item? If you can’t remember, do you really still need it?
- Does the container have more than an eighth-inch of dust on it?
Do you have a pile of rags or towels sitting on a shelf? Are they clean, or were they just allowed to air-dry and then put back on the pile? If they aren’t clean, do you recall what substance was on them? If you don’t know, throw those rags or towels out immediately. Whatever is on them might have changed from an innocuous substance when it was first applied into a chemical that may have changed or degraded with time so that now it may be dangerous.
Once you’ve
cleaned your shelves, you should have no compressed gases in your barn except consumer
products in aerosol cans, such as grooming sprays or insect repellants. About
the only permanent use of compressed gases in your barn would be compressed air,
carbon dioxide, or nitrogen used in a dry sprinkler system, which we'll discuss
a little later. Other than this exception, don't store things like propane
for your grill or tanks of welding gases in your barn.
Tractors, lawn
mowers, trucks, chain saws and other diesel- or gasoline-powered equipment should
not be parked or stored in a building housing horses. In addition to these
kinds of equipment possibly catching fire themselves, hot exhaust pipes on vehicles
can ignite loose hay, straw or other debris that might be underneath where
the equipment is parked—sometimes long after the driver has gone.
One other item
you should not store in your barn is fertilizer containing ammonium nitrate. Fertilizer
grade ammonium nitrate, according to the State of Ohio Division of Mines, is a
powerful oxidizing agent, which means it can support combustion. Compared
to dynamite, ammonium nitrate is less sensitive, but in a fire, or when fire gases
are confined, it is explosive.