2. What are actions that stop a hazardous material from leaking or escaping its container? A. Confinement B. Containment C. Control D.

Transcription

1 Chapter 12 Multiple Choice 1. What is the term for attempting to keep the hazardous materials on the site or within the immediate area of the release? A. Adsorption B. Confinement C. Remediation D. Containment Objective: NFPA 472, (2), (3); Level: Operations Subject: Introduction; Chapter 12; Page What are actions that stop a hazardous material from leaking or escaping its container? A. Confinement B. Containment C. Control D. Mitigation Objective: NFPA 472, (2), (3); Level: Operations Subject: Introduction; Chapter 12; Page Which of the following is a confinement tactic? A. Plugging B. Patching C. Diking D. Righting an overturned container Objective: NFPA 472, (2)(d), (3)(d); Level: Operations Subject: Introduction; Chapter 12; Page 254

2 4. Which of the following is a containment tactic? A. Plugging B. Damming C. Diking D. Vapor control Objective: NFPA 472, , ; Level: Operations Subject: Introduction; Chapter 12; Page In a hazardous materials situation that is dangerous and unstable and in which responders cannot be properly protected, which action is appropriate? A. Withdraw to a safe distance. B. Minimize spread of the material. C. Attempt to stabilize the situation. D. Stop release of the material. Objective: NFPA 472, ; Level: Operations Subject: Control Options; Chapter 12; Page What term means areas in the terrain or places in a structure where materials might be contained or confined? A. Declivity B. Anchor points C. Topographic basin D. Natural control points Objective: NFPA 472, , ; Level: Operations Subject: Control Options; Chapter 12; Page In which process is a material used to soak up and hold a liquid hazardous material like a sponge holds water? A. Adduction

3 B. Absorption C. Abduction D. Osmosis Objective: NFPA 472, (2)(a), (3)(a); Level: Operations Subject: Control Options; Chapter 12; Page Which item is an absorbent commonly used in hazardous materials operations? A. Mortar B. Soil C. Baking soda D. Stone tailings Objective: NFPA 472, (2)(a), (3)(a); Level: Operations Subject: Control Options; Chapter 12; Page When applying foam to a pool of burning fuel, it is important to avoid: A. directing the foam onto any surface other than the liquid. B. using standard fog or smooth-bore nozzles to apply the foam. C. agitating the surface of the liquid. D. using alcohol-resistant formulations. Objective: NFPA 472, (1)(b), (2); Level: Operations 10. Absorption is a difficult technique for operations level responders at a hazardous materials incident because: A. it is a precise, technically advanced procedure. B. it must be performed by personnel in Level A PPE. C. it requires being in close proximity to the hazardous material. D. the absorbents are difficult to handle. Objective: NFPA 472, (2)(a), (3)(a); Level: Operations

4 Subject: Control Options; Chapter 12; Page How does a spill boom control a hazardous material? A. It forms a barrier to the movement of the material. B. It absorbs the material. C. It reduces agitation of liquid within the boom perimeter. D. It covers the material. Objective: NFPA 472, (2)(h), (3)(h); Level: Operations Subject: Control Options; Chapter 12; Page The concept of adsorption is most similar to: A. burial. B. a sponge. C. Velcro. D. diffusion. Objective: NFPA 472, (2)(a), (3)(a); Level: Operations Subject: Control Options; Chapter 12; Page Which method of product control results in one material physically adhering to another? A. Absorption B. Dilution C. Adsorption D. Retention Objective: NFPA 472, (2)(b), (3)(b); Level: Operations Subject: Control Options; Chapter 12; Page Which is a common adsorbent material?

5 A. Nitric acid B. Sawdust C. Peat moss D. Activated carbon Objective: NFPA 472, (2)(b), (3)(b); Level: Operations Subject: Control Options; Chapter 12; Page What type of dam should be constructed for a material that has a specific gravity greater than 1? A. Scherring B. Overflow C. Separation D. Gravity Objective: NFPA 472, (2)(h), (3)(h); Level: Operations Subject: Control Options; Chapter 12; Page Which type of dam is used to contain materials lighter than water? A. Underflow B. Gravity C. Separation D. Split Objective: NFPA 472, (2)(h), (3)(h); Level: Operations Subject: Control Options; Chapter 12; Page Which item will be needed to build a dam in a flowing stream that is contaminated with a hazardous liquid? A. Plastic sheeting B. Rebar C. PVC pipe D. Rip-rap

6 Objective: NFPA 472, (2)(h), (3)(h); Level: Operations Subject: Control Options; Chapter 12; Page What term means the placement of material to form a barrier that keeps a hazardous material from entering an unwanted area? A. Diking B. Scherring dam C. Retention D. Diversion Objective: NFPA 472, (2)(d), (3)(d); Level: Operations Subject: Control Options; Chapter 12; Page Which protective action uses water or another liquid to reduce the concentration of a hazardous material? A. Dispersion B. Adsorption C. Dilution D. Suppression Objective: NFPA 472, (2)(e), (3)(e); Level: Operations Subject: Control Options; Chapter 12; Page Which of the following is a concern with using dilution at a hazardous materials spill? A. Once water is added, the identity of the hazardous material may be masked. B. Chemical treatments may not be effective on diluted solution of the product. C. Once water is added, it cannot be removed. D. The diluted product may overwhelm containment measures. Objective: NFPA 472, (2)(e), (3)(e); Level: Operations Subject: Control Options; Chapter 12; Page 259

7 21. How much water is needed to effectively dilute a hazardous material? A. A volume equal to twice that of the material to be diluted B. A volume equal to three times that of the material to be diluted C. A volume equal to four times that of the material to be diluted D. It varies, depending on the material to be diluted. Objective: NFPA 472, (2)(e), (3) ; Level: Operations Subject: Control Options; Chapter 12; Page What is the first step in dike construction? A. Determine which diking material will be compatible with the spilled material. B. Dig a shallow depression. C. Determine the number and location of the pipes. D. Spread out the plastic sheeting. Objective: NFPA 472, (2)(d), (3)(d); Level: Operations Subject: Control Options; Chapter 12; Page What is the first step in a dilution operation? A. Determine material compatibility. B. Assess the viability of the proposed operation. C. Ensure adequate water supply. D. Build containment for the diluted product. Objective: NFPA 472, (2)(e), (3)(e); Level: Operations Subject: Control Options; Chapter 12; Page What is the technique of redirecting the flow of a liquid away from an area? A. Diversion B. Damming C. Diking D. Detainment

8 Objective: NFPA 472, (2)(f), (3)(f); Level: Operations Subject: Control Options; Chapter 12; Page You have used sandbags to create a barrier to prevent a hazardous liquid from entering a storm drain. Which product control tactic is this? A. Damming B. Diversion C. Diking D. Retention Objective: NFPA 472, (2)(f), (3)(f); Level: Operations Subject: Control Options; Chapter 12; Page You have dug a shallow pit to collect and hold a hazardous liquid. Which control tactic is this? A. Containment B. Detainment C. Diking D. Retention Objective: NFPA 472, (2)(g), (3)(g); Level: Operations Subject: Control Options; Chapter 12; Page 261, Which control tactic should always be considered in transportation emergencies or incidents at fixed facilities? A. Damming B. Retention C. Remote valve shut-off D. Diffusion Objective: NFPA 472, (2)(h), (h)(d); Level: Operations Subject: Control Options; Chapter 12; Page 262

9 28. Where are remote shut-off valves located on MC-306 cargo tanks? A. Next to the air coupling B. At the front of the tank C. Near the front of the cab D. In the valve box Objective: NFPA 472, (4); Level: Operations Subject: Control Options; Chapter 12; Page Where are shut-off valves located on MC-331 cargo tanks? A. In the vent housing B. At both ends of the tank C. Near the front of the cab D. In the valve box Objective: NFPA 472, (4); Level: Operations Subject: Control Options; Chapter 12; Page What is an identifying characteristic of a cargo tank truck designed to carry liquefied gases such as liquefied petroleum gas? A. External structural rings B. Top-mount valve controls C. Insulated tank shell D. Rounded tank ends Objective: NFPA 472, (4); Level: Operations Subject: Control Options; Chapter 12; Page Which of the following is an identifying characteristic of a cargo tank truck designed to carry liquids at atmospheric pressure?

10 A. Oval/elliptical cross-sectional tank shape B. Circumferential rollover protection C. External ring stiffeners D. Top-mounted loading control valves Objective: NFPA 472, (4); Level: Operations Subject: Control Options; Chapter 12; Page Which cargo tanks are certified to transport flammable and combustible liquids chemicals transported at low pressure (under 25 pounds per square inch)? A. MC-307/DOT-407 B. MC-306/DOT-406 C. MC-331/DOT-431 D. MC-312/DOT-412 Objective: NFPA 472, (4); Level: Operations Subject: Control Options; Chapter 12; Page Which tactic lowers the concentration of a vapor cloud by spreading it out? A. Diffusion B. Ventilation C. Vapor dispersion D. Gas retention Objective: NFPA 472, (2)(i), (3)(i); Level: Operations Subject: Control Options; Chapter 12; Page Vapor dispersion with fans or fog streams should only be attempted after: A. an opposing dispersing stream is ready. B. a containment basin is dug. C. the ground has been treated with lime. D. the hazardous material is accurately identified.

11 Objective: NFPA 472, (2)(i), (3)(i); Level: Operations Subject: Control Options; Chapter 12; Page Which issue requires particular attention when considering attempting dispersal of flammable vapors? A. Turbulence created by the dispersal may increase vapor production. B. Personnel may be directly exposed to the material. C. Water fog will react to many flammable liquids. D. Dispersal may cause the vapors to ignite. Objective: NFPA 472, (2)(i), (3)(i); Level: Operations Subject: Control Options; Chapter 12; Page When foam is applied to a hazardous materials spill, what happens to the volume of the spill? A. It decreases. B. It increases. C. It remains the same. D. It depends on the substance involved. Objective: NFPA 472, (2); Level: Operations Subject: Control Options; Chapter 12; Page The most common method of vapor suppression is application of: A. plastic or other impermeable sheet material. B. sawdust or other particulate absorbent. C. firefighting foam. D. an inert, heavier-than-air gas. Subject: Control Options; Chapter 12; Page 264

12 38. Why should foam be applied so that it flows gently across a liquid? A. To avoid directly upsetting the burning surface B. To prevent disruption of the foam blanket C. To prevent entraining additional air D. Because liquid agitation will increase the temperature Objective: NFPA 472, (2); Level: Operations 39. Aqueous film-forming foam works primarily by: A. displacing oxygen with an inert gas. B. inhibiting the chemical chain reaction. C. cooling the fuel. D. forming a blanket to suppress vapors. Objective: NFPA 472, , (2); Level: Operations Subject: Control Options; Chapter 12; Page Which statement about regular protein foam is correct? A. It is effective on polar solvents. B. It has a longer shelf life than synthetic foam. C. It is not effective on class B fires. D. It has good expansion properties. Objective: NFPA Line Item N/A; Level: Operations Subject: Control Options; Chapter 12; Page Which statement about fluoroprotein foam is correct? A. It has poor vapor-suppressing performance. B. It is effective on Class B fires. C. It is effective as a Class A wetting agent. D. It is not available in a polar solvent-resistant formula.

13 Objective: NFPA 472, (2)(c); Level: Operations Subject: Control Options; Chapter 12; Page When is application of high-expansion foam most appropriate? A. When vapor suppression of polar solvents is required B. When foam with high water content is required C. When using as a wetting agent D. When flooding a large area with foam Objective: NFPA 472, (2)(d); Level: Operations Subject: Control Options; Chapter 12; Page What foam application method should be used on a pooled liquid fire on the ground producing an intense thermal column? A. Bounce-off method B. Rain-down method C. Roll-in method D. Subsurface injection method, What foam application method should be used on open-top storage tank fires? A. Bounce-off method B. Rain-down method C. Roll-in method D. Subsurface injection method

14 45. In addition to extinguishing flammable liquid fires, what are Class B foams used for on hazardous materials incidents? A. To break down the surface tension of fuels B. As an emulsifier for heavy hydrocarbon fuels C. To suppress vapor production of unignited fuels D. As a decontamination agent 46. In which method of foam application is a bank of foam formed on the ground in front of the flammable liquid pool and pushed over the pool by the continued application of foam? A. Bounce-off method B. Rain-down method C. Roll-in method D. Subsurface injection method 47. Which foam application method is particularly well suited to transport vehicle accidents? A. Bounce-off method B. Rain-down method C. Roll-in method D. Subsurface injection method 48. An aboveground storage tank has leaked flammable liquid into the surrounding diked containment area. A foam stream is directed against the side of the tank. Foam is running

15 down the side of the tank and covering the spilled fuel in the containment area. Which foam application method does this describe? A. Subsurface injection method B. Rain-down method C. Roll-in method D. Bounce-off method 49. A fire fighter is directing a foam stream over an aboveground open-top storage tank, letting the foam gently fall onto the surface of the liquid in the tank. Which foam application method does this describe? A. Bounce-off method B. Roll-in method C. Rain-down method D. Aerial method 50. Which foam application method is the least effective when burning fuel is producing a strong thermal column? A. Bounce-off method B. Roll-in method C. Subsurface injection method D. Rain-down method 51. Which phase of a hazardous materials incident begins when the imminent danger to people, property, and the environment is controlled and clean-up begins? A. Remediation

16 B. Recovery C. Mitigation D. Definitive Objective: NFPA Line Item N/A; Level: Operations Subject: Recovery; Chapter 12; Page 267, What alternate technique for reducing vapor formation works with some hazardous materials? A. Reducing their temperature B. Mixing in bicarbonate of soda C. Gradually bringing the material to a high acidity D. Placing floating booms to subdivide the surface area Objective: NFPA Line Item N/A; Level: Operations Subject: Control Options; Chapter 12; Page Which type of foam is produced by pumping large volumes of air through a small screen coated with a foam solution? A. Protein foam B. Fluoroprotein foam C. Aqueous film-forming foam D. High-expansion foam Objective: NFPA 472, (2)(d); Level: Operations Subject: Control Options; Chapter 12; Page The primary objective of the phase of a hazardous materials incident is to return the property or site of the incident to its original condition. A. restoration B. mitigation C. salvage D. recovery

17 Objective: NFPA Line Item N/A; Level: Awareness, Operations Subject: Control Options; Chapter 12; Page 268