HAZWOPER Technician

Practice Exam

Knowledge Check

Page 1 of 5

1. If a first responder becomes contaminated before realizing the situation, they should immediately withdraw and:

notify law enforcement.

sample themselves to determine the contaminant.

set up a decon zone.

follow local procedures for emergency decontamination.

2. Which of the following BEST describes physical processes of materials?

Any erroneous or incomplete placarding or markings

The conversion of one substance to another

Processes that do NOT change the elemental composition of materials involved.

Peculiar smells, visible vapor clouds, and radiant heat

3. How do EMS ensembles differ from fire service first responders?

EMS personnel will typically wear higher levels of respiratory protection.

EMS personnel must wear ballistic protection.

EMS PPE includes a sidearm.

EMS PPE must provide blood- and body-fluid pathogen barrier protection.

4. Which type of respirator can remove vapor and gas?

IDLH

APR

CPC

SCBA

5. Vapor protective clothing is usually part of what level of protection?

6. What will increase the rate of polymerization and decrease the activation energy necessary for further polymerization?

Inhibitor

Contamination

Fuel

Catalyst

7. A written agreement defining roles and responsibilities within a Unified Command structure is known as a(an):

Incident Management System (IMS).

National Response Framework (NRF).

National Incident Management System (NIMS).

Memorandum of Understanding (MOU).

8. Which of the following BEST describes a unit of pressure relative to the surrounding atmosphere?

Atmospheres

kPa

psig

9. Which statement about structural firefighters' protective clothing is accurate?

Gases and vapors can permeate the garments.

Gaps in structural fire fighting clothing only occur at the wrists and waist.

It provides exposure protection from liquid chemicals.

Although some hazardous materials can permeate structural fire fighting clothing, the material will quickly dissipate.

10. Which type of biological/etiological hazard spreads mostly through the bite of infected arthropods?

Bacteria

Viruses

Rickettsias

Biological toxins

Page 2 of 5

11. What is the process in which a hazardous liquid interacts with (or is bound to) the surface of a sorbent material?

Resorption

Adsorption

Sorption

Absorption

12. In Step 1 of the APIE process, responders:

use the information gathered to determine what actions need to be taken to mitigate the incident.

monitor progress to see whether the response plan is working and continue throughout the incident.

perform tasks determined in the planning stage and direct actions to mitigate the incident.

gather information and attempt to understand the current situation.

13. Which of the following is an indicator to withdraw immediately?

A sudden change in pressure

Black smoke

Consistent temperatures

Alarm sounding on a photoionization detector.

14. Which of the following is a descriptive name, identification number, weight, or specification that includes instructions, cautions, or U.N. marks, and is required on outer packaging of hazardous materials?

Four-digit ID number

Marking

Label

Placard

15. Which of the following is a 3.9-inch (100 mm) square-on-point diamond that identifies hazardous materials within packaging?

Label

Four-digit ID number

Marking

Placard

16. A Level II incident:

does not require the use of chemical protective clothing.

will most likely not be concluded by any one agency.

requires resources from state/provincial agencies, federal agencies, and/or private industry.

is beyond the capabilities of the first responders on the scene.

17. What should happen before entry personnel enter the hot zone?

Technical decon should be set up.

Victims should be identified.

Victims should be instructed to disrobe.

Responders should undergo decon.

18. Overhead power lines, highway traffic, and rail lines are examples of:

variables to eliminate.

unavoidable risks.

potential ignition sources.

potential site hazards.

19. Collision, impact, or internal overpressure are common causes of damage to a container caused by _____ energy.

chemical

radiological

mechanical

thermal

20. The aim of technical decon for nonambulatory victims is to:

apply first aid and return them to an ambulatory state.

package and triage them appropriately.

make sure they understand the delayed health risks of the hazardous material.

thoroughly decontaminate them before transferring them to EMS.

Page 3 of 5

21. When protecting the public at an incident, if there is enough time, the best protective action generally is:

shelter in place.

evacuation.

on-scene debriefing.

progress reports.

22. Which of the following statements about determining the need for emergency decontamination at an incident is MOST accurate?

Emergency decontamination should be considered at all hazmat incidents.

Emergency decontamination includes the transfer of a hazardous material in greater than acceptable quantities.

Emergency decontamination is the sudden failure of personal protective equipment or clothing.

Emergency decontamination is necessary for anyone exposed to a hazardous material.

23. The basic principles of decon are get it off, keep it off, and _____ it.

preserve

destroy

identify

contain

24. Partially water-soluble chemicals will penetrate into the lower respiratory system and cause:

sudden gastrointestinal distress.

immediate symptoms such as coughing and throat irritations.

itching, scratching, and bloody skin lesions.

delayed symptoms that include pulmonary edema and coughing up blood.

25. The three incident priorities at all hazardous materials incidents apply to:

fire and rescue operations.

civilian and emergency responder victims.

emergency responders entering the hot zone.

all emergency services organizations.

26. One difference between Mexican and U.S. placard, label, and marking systems is that:

Mexico does not require placards for radioactive materials.

Mexico has several placards for materials that may be inhaled.

the Mexican system has several fewer hazard classes than the U.S. system.

information provided on Mexican labels and markings is likely to be in Spanish.

27. If an IC receives favorable progress reports from tactical and/or task supervisors, this is an indication that:

the IC is no longer needed.

the IAP is effective.

responders should withdraw immediately.

the incident is destabilizing.

28. The decision of whether to perform emergency or technical decon is determined based on the hazardous material involved and:

the local terrain and available waterways.

how much media coverage is involved.

the urgency in removing the victim from the contaminated environment.

temperature and wind conditions.

29. What is the first step in the sequence proposed by the General Hazardous Materials Behavior Model (GEBMO)?

Dispersion

Stress

Exposure

Release

30. Which cargo tank truck almost always carries flammable/combustible liquids such as gasoline, fuel oil, or alcohol?

Nonpressure

Low pressure

High pressure

Cryogenic

Page 4 of 5

31. If service canines are brought into the hot zone, they must be:

decontaminated.

kept away from victims.

isolated.

destroyed.

32. Decontamination usually takes place within the:

hot zone.

command zone.

warm zone.

cold zone.

33. What is a likely result of following predetermined procedures at emergency incidents?

Size-up becomes unnecessary

Effective command and control

Decreased accountability

Increased chaos on scene

34. What type of dispersion pattern forms an irregularly shaped pattern of an airborne hazardous material where wind and/or topography influence the downrange course from the point of release?

Particulate

Plume

Hemispheric

Cloud

35. The technical decontamination process that uses a material to change the chemical structure of a hazardous material is:

brushing and scraping.

evaporation.

chemical degradation.

dilution.

36. A highway vehicle without a placard:

should be stopped and inspected for terrorist activity.

will NOT be carrying hazardous materials.

may still be carrying hazardous materials.

is illegal.

37. MC-331 cargo tanks typically have bolted manways, inlet and outlet valves, and:

multiple compartments.

large bulky double shelling and heavy insulation.

large hemispherical heads on both ends.

black, heat-absorbing paint.

38. Under ANSI Z535.1, what color means Warning?

Orange

Yellow

Red

Green

39. What type of incident requires unified command?

Level I

Level IV

Level III

Level II

40. What is required for all first responders who have been exposed or potentially exposed to hazardous materials?

A leave of absence

Exposure records

Immediate hospitalization

Exposure justification

Page 5 of 5

41. The decontamination site should be situated _____ of the hot zone.

opposite

downwind

inside

upwind

42. Assessing the incident's conditions to recognize cues that indicate problems or potential problems is called:

safety checks.

preincident planning.

hazard assessment.

size-up.

43. The three mechanisms of harm in a container hazardous materials incident are:

dispersion patterns, rapid release, and detonation.

energy release, corrosivity, and toxicity.

radioactivity, pressure, and temperature.

wind speed, barometric pressure, and time of day.

44. Which level of PPE is only used when the specific material is known and has been measured, and the atmosphere is not IDLH?

Level A

Level B

Level C

Level D

45. In Step 4 of the APIE process, responders:

gather information and attempt to understand the current situation.

monitor progress to see whether the response plan is working and continue throughout the incident.

use the information gathered to determine what actions need to be taken to mitigate the incident.

perform tasks determined in the planning stage and direct actions to mitigate the incident.

46. What type of containers are flexible, collapsible bags or sacks, and also called bulk bags, bulk sacks, or tote bags?

Liquid

RIBC

FIBC

Nonbulk

47. Where would you find information on protective clothing and respiratory protection recommendations?

The Public Safety Section in the orange-bordered pages

The green highlighted sections of the blue-bordered pages

The Table of Initial Isolation and Protective Action Distances

The ID Guide in the yellow-bordered pages

48. The damaging effects of ionizing radiation occur at the _____ level.

organ

environmental

external

cellular

49. The APIE process is a simple 4-step response model that:

is required to be used at all North American hazmat incidents.

is not effective in large or complex hazmat incidents.

can guide responders' actions at hazmat incidents.

is most effective in large or complex hazmat incidents.

50. The reducing agent in the fire tetrahedron acts as the _____ source for the reaction.

activation

oxygen

fuel

autoignition

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