Tcfp HazMat Operations Possible 2023 Questions and Answers

Tcfp HazMat Operations Possible 2023

Questions and Answers

When responding to hazardous materials/WMD incidents Operations level responders

shall be able to preform the following task... Answer- 1. Analyze a HazMat incident to

determine the scope of the problem

2. Plan an initial response

3. Implement a planned response

4. Evaluate the progress

Analyzing a hazardous material incident to determine the scope of the problem

involves... Answer- 1. Surveying the incident to identify containers and materials

involved, determine if wether hazardous material has been released and evaluate the

surrounding conditions

2. Collect hazard and response information from SDS, CHEMTREC and

shipping/manufacturer contracts

3.Predict the behavior of Hazardous materials and its container

4.Estimate the potential harm through TRACE-MP

What does TRACE-MP stand for? Answer- Types of potential harm at Hazardous

Material/WMD incidents.

Thermal

Radiation

Asphyxiation

Chemical

Etiological

Mechanical

Psychological/ Psychogenic

The initial response at a HazMat incident is determined by.. Answer- The capabilities

and competencies of available personnel and personal protective equipment

The response objectives at a hazardous material/WMD incident include... Answer1.Evacuation

2. Search and Rescue

3. Exposure protection/ Isolating the Area

4. Defensive control techniques

5. Crime scene management and evidence preservation

6. Recovery and termination

Describe the response options available for Evacuation Answer- 1. Full scale

evacuation

2. Shelter-in-place

3. Combination

Describe the response options available for Search and Rescue Answer- 1. Based on

training and equipment

2. Risk-benefit analysis (risk a lot to save a lot, risk a little to save a little)

Describe the response options available for Exposure protection/Isolating the Area

Answer- 1.Establish initial isolation zone

2.Establish protective action distance

3. Establish control zones

Describe the response options available for Defensive Control Techniques Answer- 1.

Damming (Overflow or Underflow)

2. Diking

3. Retention

4. Dispersion

5. Absorption

6. Adsorption

7. Dilution

8. Dissolution

9. Diversion

10. Vapor dispersion

11. Vapor suppression

12. Ventilation

13. Remote valve shutoff

What is Damming... Answer- Physical method of confinement by which barriers are

constructed to prevent or reduce the quantity of liquid flowing into the environment.

Consists of constructing a barrier across a waterway to stop/control the product flow

and pick up liquid or solid contaminants

What is Underflow Damming ... Answer- Spill control tactic used to trap floating lighter

than water materials behind the dam. Dam is constructed in a manner that allows

uncontaminated water to flow unobstructed under the dam while keeping the

contaminant behind the dam.

What is Overflow Damming... Answer- Spill control tactic used to trap sinking heavier

than water materials behind the dam. With the product trapped, uncontaminated water

is allowed to flow unobstructed over the top of the dam.

What is Diking... Answer- Physical method of confinement by which barriers are

constructed on ground used to control the movement of liquids, sludges, solids, or other

materials. Prevents the passage of hazmat from entering an area where it will produce

more harm.

What is retention... Answer- Physical method of confinement by which a liquid is

temporarily contained in an area where it can be absorbed, neutralized, or picked up for

proper disposal

What is dispersion... Answer- Chemical method of confinement by which certain

chemical and biological agents are used to disperse or break up the material involved in

liquid spills on water

may result in spreading the hazardous material over a large area.

What is absorption... Answer- Absorption occurs when one material enters the cell

structure of another and is retianed within. Absorbents retain the properties of the

materials they absorb and must be treated and disposed of as hazardous material

What is adsorption... Answer- Adsorption is different from absorption in that the

molecules of the hazardous materials physically adhere to the adsorbent material

Adsorbents do not swell like absorbents

Produces heat and can cause spontaneous combustion must be disposed of properly.

Examples: activated charcoal, silica, aluminum gel, fuller's eath, POROUS clay and

other clays

What is dilution.. Answer- Dilution involves applying water to a water soluble material in

order to reduce the hazard. It is a useful way to preform decontamination but it is not a

practical practical spill control method as it typically requires so much water that it

creates a runoff problem

What is dissolution... Answer- Dissolution is the process of dissolving a gas in water.

This tactic can only be used on water-soluble gases such as chlorine or anhydrous

ammonia.

What is Diversion... Answer- Physical method of confinement by which barriers are

constructed on ground or placed in a waterway to intentionally control the movement of

a hazmat into an area where it will pose less harm to the community and the

environment

What is Vapor Dispersion... Answer- Vapor dispersion is that action taken todirect or

influence the course of airborne hazardous material. Pressurized streams (hoselines or

unattended master streams) create turbulence which increase the rate of mixing with air

and reduces the concentration of the hazardous material