Hazardous Materials Accidents
Hazardous materials are substances which, because of their
chemical, biological or physical nature, pose a potential
risk to life, health or property if they are released.
Potential hazards can occur during any stage of use from
production and storage to transportation, use or disposal.
Production and storage occurs in chemical plants, gas
stations, hospitals and many other sites. Hazardous
materials accidents can range from a chemical spill on a
highway to groundwater contamination by naturally occurring
methane gas to a household hazardous materials accident.
Radiological accidents involving a specific hazardous
material will be covered in another section of this
handbook. In addition to the information provided in the
following pages, you should also refer to the General Family
Preparedness section of this handbook.
- Be familiar with the local warning and notification
methods.
- Contact your local emergency planning committee to find
out where reportable quantities of extremely hazardous
materials are stored and used in your area.
- Ask about community response plans if there is a
hazardous materials accident at a plant or facility, or a
hazardous materials transportation accident.
Preparing for Hazardous Materials Accidents in the Home
- Go on a home hazard hunt. Some cleaners can cause an
explosion or fire if they come in contact with each
other, water, heat or flames.
- Make a list of the hazardous products you have in your
home. List the name of the product and emergency care
information.
- Store hazardous household products according to safety
recommendations.
- Store hazardous materials in a safe, dry location.
- Be sure all containers are closed to avoid spills and
escaping vapors.
- Store flammable products and corrosive products in
separate locations. The label will indicate if the
product is corrosive or flammable.
- Place oily polishing rags or waste in covered metal
cans.
- Never store aerosols on or near fireplaces, radiators,
space heaters, wood stoves, pilot lights, furnaces and
kitchen appliances.
- Keep herbicides and pesticides away from any heat
source.
- Store herbicides separately from pesticides.
Herbicide vapors can contaminate other products.
- Store pesticides and herbicides away from fertilizer.
Their vapors can contaminate fertilizers.
- Periodically check hazardous product containers for
deterioration and possible leaks.
- Check periodically to be sure that labels on hazardous
products are secure and readable.
- Store hazardous products on high shelves or in locked
cabinets to prevent poisoning of children and pets.
- Do not store flammable liquids such as gasoline and
kerosene in a garage or utility room attached to the
house.
- Never store flammable liquids or even a lawn mower
filled with gasoline near a heat source such as gas
water heaters, furnaces, radiators, space heaters,
etc. Spontaneous combustion can occur if the
flammable liquid vapors escape.
- To prevent household hazardous materials from being
spilled during a disaster such as a flood, fire or
earthquake, take the following preventive measures:
- Securely fasten shelves where hazardous materials are
stored.
- Store incompatible products in separate locations so
they will not come in contact with each other.
- Label the shelves where flammable products are stored.
- Store hazardous materials in a metal cabinet to
protect them from fire.
- Dry off containers that get wet in a flood. Move them
off damp shelves until the shelf material has dried
thoroughly.
- Check labels on wet containers and reglue or tape them
securely before they come off completely.
- Be aware of how different chemicals may react during
mixed spills. Some common chemicals and their dangers
are:
- Kitchen
- Cleansers (reactive)
- Detergents (reactive)
- Cooking oil (flammable)
- Aerosols (explosive in fire)
- Bathroom
- Aerosols (explosive in fire)
- Alcohol (flammable)
- Nail polish remover (flammable)
- Medicines (see label)
- Bedrooms
- Aerosols (explosive in fire)
- Gun ammunition (explosive in fire)
- Medicines (see label)
- Workshops
- Paints (toxic)
- Paint thinner (toxic, flammable)
- Adhesives (toxic, flammable)
- Garage
- Gasoline (toxic, flammable)
- Antifreeze (toxic, flammable)
- Brake fluid (toxic, flammable)
- Transmission fluid (toxic, flammable)
- Oil (flammable)
- Laundry Room
- Detergents (reactive)
- Cleansers (reactive)
- Bleach (reactive)
- Gardening
- Pesticides (toxic, reactive)
- Fertilizers (toxic, reactive, most flammable or
explosive when mixed with gasoline)
- General
- Natural gas (flammable, explosive)
- Sewer gases from broken sewer pipes (toxic,
explosive)
What to Do If a Hazardous Materials Accident Occurs
- If you witness a hazardous materials accident, spill or
leak, call 911, your local emergency number or the fire
department as soon as possible.
- Stay away from the incident site to minimize your chances
of contamination.
- If you are caught outside during an incident try to stay
upstream, uphill and upwind. Hazardous materials can be
transported quickly by water and wind.
- In general, try to go at least 1/2 mile (10 city
blocks) from the accident area.
- If you are in a vehicle, close off ventilation and
close the windows to reduce contamination or
inhalation of the hazardous material.
- If you are told to evacuate, do so immediately.
Before leaving your home or office, close all windows,
shut vents and turn off attic fans to minimize
contamination.
- In some circumstances, it is safer to keep community
residents inside. This is known as "in-place
sheltering." If you are instructed to stay inside:
- Follow all instructions carefully.
- Seal entry routes as efficiently as possible. Close
windows and doors and seal drafty places with wet
towels, blankets or duct tape.
- Turn off furnaces, air conditioners, vents and fans to
keep fumes from entering the house.
- If dangerous fumes do enter the home, take shallow
breaths through a cloth or towel.
- Quickly fill up your bathtub with a supply of
uncontaminated water and turn off the intake valve to
your home.
- Stay in protected areas of the house (bathroom,
stairwell, basement) where toxic vapors are less
likely to penetrate.
- Close all fireplace dampers.
- Seal any gaps around window air conditioning units,
bathroom and kitchen exhaust fan grilles and stove and
dryer vents with tape and plastic sheeting, wax paper
or aluminum wrap.
- If local authorities warn of an outdoor explosion,
close all drapes, curtains and shades. Stay away from
windows to prevent injury from breaking glass.
- Avoid contact with any spilled liquid materials, airborne
mist or condensed solid chemical deposit.
Keep your body fully covered and wear gloves, socks and
shoes, even though these measures may offer minimal
protection.
- Avoid eating or drinking any food or water that may be
contaminated.
After a Hazardous Materials Incident
- Do not return home until authorities say it is safe.
- Upon returning home, open windows and vents, and turn on
fans to provide ventilation.
- A person or item that has been exposed to a hazardous
material may be contaminated and could contaminate other
people or items. If you have come in contact with or
been exposed to hazardous materials:
- Follow decontamination instructions from your local
authorities.
- Stay away from water or showers until you know if the
material reacts with water.
- Seek medical treatment for unusual symptoms that may
be related to hazardous materials release.
- If medical help is not available immediately and you
believe you may be contaminated, remove all of your
clothing and shower thoroughly (unless authorities
advise otherwise). Change into fresh, loose, warm
clothing and seek medical help as soon as possible.
- Place exposed clothing and shoes in tightly sealed
container without allowing them to touch other
materials and call local authorities to find out about
proper disposal.
- Advise others who come in contact with you that you
may have been exposed to a toxic substance.
- Report any lingering vapors or other hazards to your
local emergency services.
- Find out from local authorities how to clean up your land
and property.
Reacting to a Hazardous Spill in Your Home
- If the spill is large and too big for one person to
control and clean up, cal 911 or your local emergency
number as soon as possible.
- Keep the area of the spill from spreading. Set up
barriers and ventilate the area if it is inside the home
or garage. Keep children and pets away.
- Check label for instructions about contact.
- Wear rubber gloves and boots.
- Wear long pants and a long sleeved shirt to avoid skin
contact.
- Clean up as soon as possible.
- Don't flush the spill away with a hose.
- If dust or powder is spilled, limit air movement in
the area and pick up the material in a way that
minimizes making the dust or powder airborne.
- If liquid is spilled, cover it with an absorbent
material such as kitty litter, paper towels or old
rags.
- Sweep or scoop the solids and the original container
into a plastic bag, also scoop up any contaminated
dirt or gravel. Seal the plastic bag.
- Scrub the area with detergent or water.
- For very toxic liquid substances such as pesticides,
cover again with absorbent materials and sweep or
scoop up the absorbent into a plastic bag.
- Scrub repeatedly until traces of the chemical are
gone.
- Place all cloths in a used plastic bag. Double bag, seal
and label.
- Completely rinse the area and any tools used.
- Dispose of contaminated materials in an appropriate
manner according to directions on the label.
- If the spill is a very toxic product, decontaminate
clothing and equipment to avoid contaminating your home
and others. Follow the same decontamination procedures
you would for a toxic spill outside the home.
Special Considerations for Agricultural Producers
In addition to the precautions and responses covered in the
previous pages, the agricultural producer will want to
consider the following measures. Also refer to the section
on General Family Preparedness.
Prevent a hazardous materials accident by making sure
agricultural chemicals are properly stored. Follow
instructions on labels.
What to do if a Hazardous Materials Accident Occurs
- Follow the same response procedures outlined in the first
part of this section.
- If livestock are downwind, downhill or downstream of the
incident move them as far from the area as possible.
- Do not enter the area or attempt to reach animals if you
must pass the area of incident.
- Refer to the Radiological Accidents section for
information on protecting food and water sources.
After a Hazardous Materials Accident
- Monitor animals for signs of illness that may be
associated with the accident.
- Contact local authorities for information on the
cleanup of land and animals.