8-Hour Refresher HAZWOPER Exam
100% Correct
DOT Class 1 - ANSWER Explosive
DOT Class 2 - ANSWER Compressed Gases ( cylinders )
DOT Class 3 - ANSWER Flammable liquids (FP < 140 degrees F)
DOT Class 4 - ANSWER Flammable Solids
DOT Class 5 - ANSWER Oxidizers
DOT Class 6 - ANSWER Poison Solids & liquids
DOT Class 7 - ANSWER Radioactive
DOT Class 8 - ANSWER Corrosives
DOT Class 9 - ANSWER Miscellaneous
Manufacturers Label Contains: - ANSWER Product name, Chemical names, Hazards, Precautions,
Storage Info, etc.
DOT Hazard Class Labels Hazardous Materials Identification System (HMIS) - ANSWER RED, BLUE,
ORANGE, WHITE
HMIS Red - ANSWER Flammability Rating
HMIS Blue - ANSWER Health Hazard Rating
,HMIS Orange - ANSWER Physical Hazard Rating
HMIS White - ANSWER Special Hazard Rating
Ingestion - ANSWER Exposure to contaminate through eating or drinking
Safe guards: Good Hygiene Practices. Dont eat / drink in work zones. Wash Hands and face before
eating, drinking, smoking, etc.
Injection - ANSWER Direct penetration of contaminate by puncture
Safe guards: Work safely
Categories of Exposure - ANSWER Acute / Chronic
Acute - ANSWER Short-term exposure to high concentration of contaminants
Results of exposure are immediate, within 72 hrs
Examples: Illness, irritation, burns, sore throat, dizziness, headache, or death.
Chronic - ANSWER Exposure to lower concentration of contaminates over longer period of time
Symptoms: occur years after exposure
Examples: cancer, kidney damage, lung damage.
Exposure Effects - ANSWER Local / Systematic
Local Effects: - ANSWER damage resulting where the chemical enters the body
Systematic effects: - ANSWER damage, which seeks a specific organ and causes damage at that point
Mutagen: - ANSWER a substance capable of inducing mutations in the DNA and in living cells
Teratogen: - ANSWER causes growth abnormalities in embryos
, Carcinogen: - ANSWER Causes the development of cancerous growth in living tissue
Dose relationship - ANSWER Lethal Dose (LD50), Lethal Concentration (LC50), Permissible Exposure
Limit (PEL), Threshold Limit Value (TLV), Recommended Exposure Limit (REL), Immediately Dangerous
to Life or Health (IDLH)
Lethal Dose (LD50) - ANSWER The concentration of a substances that is expected to cause death of
50% of the test population when exposed to that substances by any route other than inhalation. Oral
or dermal exposure
National Fire Protection Association (NFPA) Labels - ANSWER RED, BLUE, YELLOW, WHITE
NFPA Red - ANSWER Flammability rating
NFPA Blue - ANSWER Health Hazard Rating
NFPA Yellow - ANSWER Instability Hazard Rating
NFPA White - ANSWER Special Hazard Rating
Placards Identify: - ANSWER The hazard class of the material and in some cases identify the DOT
identification number or UN Number
What weight of hazardous materials requires the vehicle to display placards on all four sides? -
ANSWER 1000+Lbs
Other factors, which may indicate hazardous substances - ANSWER Locations, Colors, Container type
or shape
Safety Data Sheet (SDS) - ANSWER Information on a products hazardous ingredients, physical
properties, fire and explosion data, reactivity, health hazard data, precautions and use. Required to
be on hand for every chemical used or stored on site.
Shipping Papers or Manifests - ANSWER Reffered to as bill of landing, are required for most
hazardous material shipments. Gives information about what it is and the hazards involved.
100% Correct
DOT Class 1 - ANSWER Explosive
DOT Class 2 - ANSWER Compressed Gases ( cylinders )
DOT Class 3 - ANSWER Flammable liquids (FP < 140 degrees F)
DOT Class 4 - ANSWER Flammable Solids
DOT Class 5 - ANSWER Oxidizers
DOT Class 6 - ANSWER Poison Solids & liquids
DOT Class 7 - ANSWER Radioactive
DOT Class 8 - ANSWER Corrosives
DOT Class 9 - ANSWER Miscellaneous
Manufacturers Label Contains: - ANSWER Product name, Chemical names, Hazards, Precautions,
Storage Info, etc.
DOT Hazard Class Labels Hazardous Materials Identification System (HMIS) - ANSWER RED, BLUE,
ORANGE, WHITE
HMIS Red - ANSWER Flammability Rating
HMIS Blue - ANSWER Health Hazard Rating
,HMIS Orange - ANSWER Physical Hazard Rating
HMIS White - ANSWER Special Hazard Rating
Ingestion - ANSWER Exposure to contaminate through eating or drinking
Safe guards: Good Hygiene Practices. Dont eat / drink in work zones. Wash Hands and face before
eating, drinking, smoking, etc.
Injection - ANSWER Direct penetration of contaminate by puncture
Safe guards: Work safely
Categories of Exposure - ANSWER Acute / Chronic
Acute - ANSWER Short-term exposure to high concentration of contaminants
Results of exposure are immediate, within 72 hrs
Examples: Illness, irritation, burns, sore throat, dizziness, headache, or death.
Chronic - ANSWER Exposure to lower concentration of contaminates over longer period of time
Symptoms: occur years after exposure
Examples: cancer, kidney damage, lung damage.
Exposure Effects - ANSWER Local / Systematic
Local Effects: - ANSWER damage resulting where the chemical enters the body
Systematic effects: - ANSWER damage, which seeks a specific organ and causes damage at that point
Mutagen: - ANSWER a substance capable of inducing mutations in the DNA and in living cells
Teratogen: - ANSWER causes growth abnormalities in embryos
, Carcinogen: - ANSWER Causes the development of cancerous growth in living tissue
Dose relationship - ANSWER Lethal Dose (LD50), Lethal Concentration (LC50), Permissible Exposure
Limit (PEL), Threshold Limit Value (TLV), Recommended Exposure Limit (REL), Immediately Dangerous
to Life or Health (IDLH)
Lethal Dose (LD50) - ANSWER The concentration of a substances that is expected to cause death of
50% of the test population when exposed to that substances by any route other than inhalation. Oral
or dermal exposure
National Fire Protection Association (NFPA) Labels - ANSWER RED, BLUE, YELLOW, WHITE
NFPA Red - ANSWER Flammability rating
NFPA Blue - ANSWER Health Hazard Rating
NFPA Yellow - ANSWER Instability Hazard Rating
NFPA White - ANSWER Special Hazard Rating
Placards Identify: - ANSWER The hazard class of the material and in some cases identify the DOT
identification number or UN Number
What weight of hazardous materials requires the vehicle to display placards on all four sides? -
ANSWER 1000+Lbs
Other factors, which may indicate hazardous substances - ANSWER Locations, Colors, Container type
or shape
Safety Data Sheet (SDS) - ANSWER Information on a products hazardous ingredients, physical
properties, fire and explosion data, reactivity, health hazard data, precautions and use. Required to
be on hand for every chemical used or stored on site.
Shipping Papers or Manifests - ANSWER Reffered to as bill of landing, are required for most
hazardous material shipments. Gives information about what it is and the hazards involved.
