material capable of posing an unreasonable risk to health, safety, or the environment or capable of causing harm
Define an exposure
process by which people, animals, the environment, and equipment are subjected to or come in contact with a hazardous material
has been taken into the body
Define contamination
residue of a chemical that has been released and contacts people, the environment, animals, tools, etc
contamination is on the surface
What is a secondary contamination?
occurs when a person or object transfer the contamination or the source of contamination to another person or object by direct contact
ex: bloody glove on vehicle door handle
What are the 4 routes of entry for harmful substances to enter the body?
inhalation (70%)
ingestion (20%)
absorption (8%)
injection (2%)
What is a chronic health hazard?
adverse effect occurring after a long term exposure to a substance
may result in cancer, loss of lung function, or skin rashes
What is an acute health effect?
adverse health effects caused by relatively short exposure periods that produce observable conditions such as eye irritation, coughing, dizziness, skin burns
includes one time exposures
What is a sensitizer?
a chemical that causes a substantial proportion of exposed people or animals to develop an allergic reaction in normal tissue after repeated exposure to the chemical
ex: 99 bee stings with no reaction, 100th sting causes anaphylaxis
What is a convulsant?
chemical capable of causing convulsions or seizures when absorbed by the body
includes nerve agents sarin and VX (nerve gas)
What is a corrosive?
chemical which either dissolve tissue or corrode metal
types of damage possible from a hazardous material
thermal
radiological
asphyxiation
chemical
etiological
mechanical
CBRNE
types of chemical warfare agents
chemical
biological
radiological
nuclear
explosive
Types of weapons of mass destruction
nerve agents
blister agents
cyanide
choking agents
irritants
How do nerve agents enter the body?
lungs or skin
SLUDGEM
ways that nerve agents affect the body
s - salivation
L - lachrymation
U - urination
D - defecation
G - gastric disturbances
E - emesis
M - miosis (pinpoint pupils), muscular spasms
True or False: Nerve agents are gases, not liquids.
false, they are liquids
What is sulfur mustard?
a blister agent used in WWI
injures skin and lungs
can be fatal
side effects may not appear for 2 to 24 hrs after exposure
once blistering occurs, decon will not help
water will not help as it is an oil
What is lewisite?
blistering agent much like sulfur mustard
arsenic based
can cause vomiting/hypotension
exposure will cause immediate px
decon is required
is a carcinogen
What is cyanide?
prevents the body from using O2
enters the body through the lungs
hydrogen cyanide smells like bitter almonds
s/s include vomiting and dizziness
What are choking agents?
designed to incapacitate rather than kill
may result in pulmonary edema
What are irritants?
generally used for riot control
cause px and burning in exposed skin, eyes, and mucous membranes
symptoms occur within seconds and can last up to hours
usually no lasting effects
What are the 7 primary ways to identify hazmat?
shipping papers or docs
container shape/type
placard/label
detection equipment
markings/colors
type of occupancy/locations
senses
What is considered bulk shipment?
liquids: more than 119 gallons
solids: more than 882 pounds
gases: water capacity of container more than 1,000 pounds
What are the three types of bulk storage containers?
large volume horizontal tanks (liquids with no pressure)
ASTs (above ground storage tanks) and USTs (underground storage tanks) - both can be pressurized, typically hold flammable/combustible materials, typically round to evenly distribute pressure
pressurized horizontal tanks
totes
What are the characteristics of a pressurized horizontal tank?
rounded ends in order to evenly distribute pressure
can hold a few hundred to several thousand gallons
generally filled to 80% capacity to make room for vapor pressure
What are the characteristics of a tote?
portable plastic tanks surrounded by a stainless steel web that adds both structural stability and protection
can hold up to a few hundred gallons
can be hazardous for shipping or storage
How much can an IM-101/IMO type 1 tank hold?
6,000 gallon capacity
What is the internal working psi of an IM-101/IMO type 1?