(3) Fire Prevention. Fire prevention includes good house-
keeping to eleminate combustible materials, proper handling of sup-
plies and samples to control formation of flammable vapors or fumes,
and proper regard for sources of igniton.
Do not smoke in laboratory, confine smoking to
permitted areas, and police those areas daily.
Keep gas jets closed when not in use. Check
burners and connecting tubing frequently to be sure
that they are not faulty. Replace defective tubing
when it is discovered.
Never leave an open flame or electric heater
unattended while in use. Make sure there is no
open flame or heating element in use in the area
when voltatile liquids are poured.
Discard organic products in authorized containers,
never in sinks or drain systems.
Keep flammable products or other liquids away from
sources of heat such as engine exhausts, open
flames, and direct sunlight, and keep them away
from circuit breakers, electrical switches and
Never discard hot liquids in drains. Set them aside
to cool in covered containers before discarding them.
Make sure that chemicals that are unsafe in close
proximity are stored in separate areas.
Clean up immediately the areas of spills involving
flammable or hazardous vapors or fumes.
When heating fluids which may superheat, use glass
beads or fragments to prevent boiling over or
When diluting acids, pour acid into the water.
Avoid pouring water into acid because this could
Make sure that equipment is fixed firmly in posi-
tion before starting a heating operation.
Keep heat and open flames away from gas cylinders.
Never drop a gas cylinder to the floor or ground.
Check electrical wiring and equipment for defective
or loose connections or frayed insulations frequent-
ly. Check line load on circuits to prevent over-
loading individual circuits.