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HAZMAT TECHNICIAN PRACTICE EXAM QUESTIONS WITH COMPLETE VERIFIED CORRECT ANSWESR
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- Oxford University (OX)
HAZMAT TECHNICIAN PRACTICE EXAM QUESTIONS WITH COMPLETE VERIFIED CORRECT ANSWESR
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HAZMAT TECHNICIAN PRACTICE EXAMQUESTIONS WITH COMPLETE VERIFIED
SOLUTIONS
HMT shall be able to - answer analyze
plan
implement
terminate
Biological hazards - answer Microoganisms, bacteria, viruses, that may cause severe, disabling
disease or illness
can be transferred from blood or other bodily fluids
Corrosivity Hazards - answer Materials that destroy living tissue and damage or destroy metal
Acids or bases
Explosivity - answer rapid release of energy or rapid release upon activation
Reactivity - answer the ability of a substance to go through a chemical change
Radioactivity - answer non ionizing --> ionizing
Three types of energy - answer Explosivity
Reactivity
Radioactivity
Flammability - answer materials susceptibility to ignite
,flammability determines incident strategies and tactics
Oxygen concentration - answer amount of oxygen in a given system like blood or in liquid or gas
19.5-23.5 normal
below 19.5 deficient
above 23.5 enriched
Thermal hazards - answer Heat- temperature extremes, fires/explosions involving flammable
liquids/explosive materials can cause burns
cold- lack of heat, cryogenic, liquified gases, cold atmospheric temperatures
Toxicity - answer chemical or biological substances that cause sickness or illness
damage of the molecular scale when in contact w the body
Gases - answer mostly sink and displace air while only a few rise and float above
Before monitoring activity - answer 1. purpose
2. anticipated reading
Hazardous Solids - answer will usually not travel far unless blown by wind or dispersed by
explosion
Hazardous Liquids - answer vaporize, expand rapidly
potentially travel great distances
Hazardous Gases - answer expand rapidly, fill enclosed spaces and may travel great distances
,can kill quickly if inhaled
Selection & maintenance of detection & monitoring devices include: - answer mission
suspected hazards involved
portability and user friendliness
Instrument Reaction Time - answer ranging from seconds to minutes between the time
detected and display of reading
Sensitivity and selectivity - answer Some instruments will detect lower concentrations than
others, while others will only detect very specific materials.
Responders must consider how well the instrument will detect the desired chemical or chemical
family and to what degree.
Calibration - answer Most instruments need prior to use, per AHJ and manufacturer
recommendations
temperature, humidity, atmospheric pressure affects this process
ALWAYS refer to manufacturer
Calibration Test (Bump test) - answer - Ensures that sensors function appropriately for alarms
and other functions
- Does not test the accuracy of the sensor
Zeroing - answer Resetting an instrument read at normal (baseline) levels in fresh air.
Steps for identifying an unknown atmosphere - answer Radioactivity
Flammability/Combustibility
Oxygen availability
, Corrosives
Toxics
Exothermic reactions
Oxidizers
Radiation- Roetgen - answer Rem- large amounts of radiation
mrem- small doses
Roetgen=rad=rem
rem-Roentgen Equivilent Man
Roetgen only measures gamma/Xray
radiation absorbed dose (rad) - answer unit used to measure the amount of energy absorbed in
any material
applies to all radiation
does NOT take potential effect into account
SI system - answer International System of units based on the metric system and units derived
from the metric syste
Gray (Gy) and Siverts (Sv)
Radiation Detectors - answer Gas-filled and Scintillators
Gas filled detectors - answer Radiation ionizes gas inside detection chamber & instruments
electronics measure quantity of ions created. Iron chambers & Geiger-Mueller (GM) detectors
are common
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