Welcome to our final lesson. We've covered what to wear, PPE, safety
equipment, behavior, and chemical safety. But there are a few other general lab hazards
we need address, and they're just as important to know. First, is electrical shock. Keep in mind that many pieces of equipment
in the lab operate at very high voltages. So keep water and liquids away from instruments. Never attempt to repair or open any cover
while an instrument is plugged in. Routinely inspect your equipment. Check for fray
ed electrical cords, and only use approved extension cables or
power switches. The next hazard is burns. Many lab instruments, like the autoclave,
operate at high temperatures and can cause burns. Use heat-resistant gloves whenever handling
hot materials. If you're using the GC-MS, lower the temperature
set points before opening the cover. Extremely low temperatures can also damage
unprotected skin. Wear insulated gloves when handling dry ice
or items stored in the minus-80 degree freezer. Slips
, trips, and falls can cause very serious
injuries. Most of the time, these hazards can be avoided. Keep floors and routes of movement through
the lab clear of any obstructions. Never place any materials or instruments on
the floor, not even temporarily. Clean up spills immediately and use "wet
floor" signs to warn your colleagues. Be aware of your surroundings. Look out for shelves, table tops, or any other
structures that could cause a head injury if you bump
into them. Compressed gas cylinder
s are under extreme
pressure. If they're damaged, the cylinder may be
propelled at extremely dangerous speeds. Some gas cylinders, such as hydrogen, are
also extremely flammable. Secure gas cylinders with a heavy-duty clamp
and strap. The cylinder's head should be sealed with
a threaded protective cap whenever it's not in use. Most accidents that occur in the lab tend
to be minor and are caused by workers who ignore or just forget the safety procedures. However, serious even fatal accidents can
and do occur. You can do your part to minimize the risk
of both minor and major accidents by following the safety rules. Keep an eye out for your coworkers too...make
sure they're working safely. Good science begins with safe science. Be safe. Take care.
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