|
| |
Daniel
High School Laboratory Safety Guidelines
see
also: Laboratory Regulations
Everyone must be responsible for everyone else in lab.
No horse-play is ever allowed. Lack
of pre-lab preparation is the biggest problem related to lab safety.
If you or your group members are unprepared for lab you will waist time
and have a good chance of making mistakes.
Safety Glasses must be worn any time you are in lab.
Contact lenses should NOT be worn in lab.
 | It
is almost impossible to remove contacts after chemicals have been splashed
into the eyes.
|
| Chemicals
trapped under contacts will damage the eye even more than normal.
|
| The
plastic used for some types of contact lenses is permeable to vapors found
in the laboratory. If these
vapors are trapped behind the lens, extensive irritation may occur.
|
Long hair, bulky clothing, rings, watches, dangling
jewelry are dangerous in lab.
Accidents Can Happen: Remain
calm and report it immediately.
Broken Glass:
| Stop
and report it immediately. Do
not move until your teacher says it is safe to do so.
There may be small slivers of glass that you do no notice. |
| Your
teacher will collect the broken glass, not you. More minor cuts occur after this type of accident than
during it. |
| Chemical
spills are often involved with glass breakage. Follow those rules if it occurs. |
Cuts and Scrapes:
| Report
the situation to the teacher and let him help the injured person. |
| There
is always a possibility of infection.
For this reason you should report any cut or scrape, even if there
is no visible blood. |
| Do
not come into contact with another’s person’s blood. |
| If
there is blood at any lab station, everyone is to turn off
all burners and move to your seat in the classroom area until told it is
safe to return to the lab. |
Chemical Spills:
| Depending
on the chemical spilled, we might just have to clean it up or we might
have a more dangerous situation. |
| The
most potentially dangerous chemicals used in our lab are corrosive acids
and bases. Even though you
will be using chemicals that have been diluted, you should always treat
acids and bases with care. |
| You
are to treat all spills as DANGEROUS. |
| Stay
where you are and let your teacher advise you about what to do. |
| We
will discuss methods for treating different types of spills in class. |
| Remember
that broken glass often occurs along with chemical spills.
Be prepared to follow those guidelines as well. |
Fire:
| Bunsen
burners: if a malfunction
occurs, turn off the burner and notify your teacher. |
| When
you are not actively heating something – turn the burner off. |
| Someone
in your group must always be watching the flame (the watcher of the
flame!) |
| If
a paper fire occurs, push the paper into the lab sink and turn on the
water. |
| Clothing
or Hair: Don’t panic:
If you are involved, stay where you are – help is coming.
Your partners should get the fire blanket.
Everyone else should stay away. |
| The
teacher is the only authorized person to use the fire extinguisher. |
Lab Safety Equipment
Eye Wash Station:
| The
station should only be used if chemicals come in contact with the eyes. |
| Eyelids
have to be forcibly opened to ensure effective washing behind the eyelid. |
| Be
sure to wash from the nose out to the ear. This will avoid washing chemicals back into the eye or
into an unaffected eye. |
| Flood
eyes and eyelids with water for a minimum of 15 minutes. |
| Contacts
should not be worn during labs. If
you are wearing them when involved with an accident, remove them as soon
as possible to rinse eyes of any harmful chemicals. |
| After
the teacher determines that the eyes are completely flushed, both of the
victim’s eyes should be covered with a clean or sterile gauze. |
Safety Shower:
| It
provides an effective means of treatment in the event that large amounts
of chemicals are spilled or splashed onto the skin or clothing. |
| As
long as the handle is pulled down, the safety shower will supply a
continuous stream of water to cover the entire body. |
| Individuals
should remove clothing, including shoes and jewelry, while under an
operating shower. |
Fire Blanket:
| Fire
blankets are not the best means to extinguish a fire.
They may be used to extinguish clothing that is burning, but should
never be used on any other type of fire. |
| Fire
blankets are a good means to keep shock victims warm or to cover large
chemical spills. |
Fire Extinguisher:
| Fire
extinguishers are classified according to a particular fire type and are
given the same letter and symbol classification as that of the fire. |
| Type
A – combustible wood, cloth, paper, rubber,
and plastics. |
| Type
B - flammable liquids, oil,
grease, and paint thinners. |
| Type
C - energized electrical
equipment |
| Type
D - combustible metals (Mg,
Ti, Na, Li, K) |
| Multipurpose
Extinguishers are effective against types A, B, and C fires |
| To
effectively operate an extinguisher, think P-A-S-S |
P -- pull the pin
A-- aim the hose a the base of
the fire
S – squeeze the handle
S – sweep the hose back and
forth
| Never
use water on a Type B fire. These
liquids float on water and, thus, water can spread the burning liquid.
Water makes hot grease splatter, and can result in burns.
Cover the burning grease with sand, baking soda, or with the metal
lid of the frying pan. |
| Never
use water on a Type C fire. Water
can cause a severe electric shock. |
Being Prepared Checklist for school:
| Know
all exits. |
| Practice
drills seriously. |
| Know
locations of safety equipment and extinguishers. |
| Report
any safety hazards to the teacher. |
| Be
sure smoke detectors work. |
Common Sense Guidelines:
| Stay
calm. Help others to stay
calm. |
| Notify
a teacher immediately. |
| At
home, call the fire department as quickly as possible without endangering
your escape from the fire. You
may have to call from outside. |
| Avoid
smoke-filled passageways. If
you must pass through a smoke-filled area, crawl on hands an knees.
If possible, wrap a wet towel around your nose and mouth. |
| Close
doors when leaving an area. Never
open a door that is hot to the touch. |
| If
your clothes do catch fire, DO NOT RUN.
Roll on the floor or wrap yourself in a fire blanket or rug. |
Fire Hazard Checklist:
| Frayed
electric cord, electric cords under rugs, near heat sources |
| Many
appliances plugged into one outlet |
| Combustibles
(paper, drapes) near heat source |
| Oil-soaked
rags in open container |
| Flammable
liquids in open container |
| Lit
cigarettes dumped into waste basket or down garbage chute |
| Using
flammable liquid in unventilated areas |
| Using
gasoline to start fires |
| Adding
starter fluid to hot coals |
| Smoking
in bed |
|
