Questions and Answers
Mixing is also referred to as what?
blending
To ensure maximum effectiveness, use foam concentrates __________ the specific percentage for which they are intended to be proportioned.
Firefighting foam solution is __________ percent water.
The most effective type of foam for use on polar solvents is:
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Foams designed for Class B fuel fires are used at __________ percent concentration.
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Regarding the application of firefighting foam, the major difference between hydrocarbon and polar solvent fuels is that:
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Application rate in relationship to a flammable liquids fire is:
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Fuel resistance is:
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Which of the following is not one of the ways foam is applied using a nozzle?
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Solubility is defined as:
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Friction loss is:
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In what type of fire might it be better to allow the fire to burn itself out, rather than applying water as an extinguishing agent?
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The preferred method of controlling flammable liquid fires is:
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Liquids that have flash points less than __________ are __________ liquids.
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Unburned flammable liquid vapors are usually __________ than air and __________.
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At flammable liquid spills, fire apparatus should be positioned:
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Combustible liquids are those that have a flash point higher than __________o F.
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One of the most important problems that must be addressed during a flammable liquids incident is:
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Water can be used at fires involving a flammable liquid as a cooling agent, mechanical tool, protective cover, and:
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Once the valve on a container of flammable liquids has been shut off, the hose crew should:
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Match the following terms regarding the use of water on Class B fire:
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The four basic methods by which foam may be proportioned are: Injection, Premixing, Induction, and:
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After extinguishing a Class B fire with foam, the area should be:
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Which of the following is not a hydrocarbon?
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The safest recommended means for a firefighter to disconnect electrical service to a building is to:
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The only effective measure for protecting firefighters from an imminent building collapse is to:
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A roof that is elevated in the center and with an angular slope to the edges is called a __________ roof.
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Upon arrival at the scene of a fully-involved building fire, a firefighter observes large metal stars mounted on the exterior walls and tie rods. The firefighter should:
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The primary fire hazard in fire resistive construction is the:
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Horizontal extension of fire includes all of the following means of heat transfer except through:
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The type of construction that has the greatest resistance to structural damage by fire is __________ construction.
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When a company officer arrives first on a fire scene, the officer is in command until:
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An employee becomes frustrated because he/she cannot comply with conflicting orders from different bosses. This situation was caused by a violation of:
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In the fire service, division of labor is necessary to:
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Policies are examples of standing plans designed to provide:
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A procedure is a(n):
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Which of the following is one of the major functions of the Incident Management System?
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The Incident Management System has a number of components that provide the basis for an effective IMS operation. Which of the following is not one of these components?
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Which of the following is not a major functional area of the Incident Management System?
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NFPA __________ is the standard that contains minimum requirements and procedures for a safety and health program.
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Passengers and drivers/operators of responding emergency vehicles should do all of the following except:
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Under normal conditions, only a(n) __________ may order multiple alarms or additional resources for large-scale incidents.
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As it relates to the Incident Management System (IMS), a division refers to:
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Which of the following is not a component of an Incident Management System?
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The Incident Management System should:
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The tracking of personnel working at an incident requires a system that is standardized for every incident to establish:
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In the Incident Management System, the __________ has authority over the ordering, releasing, and controlling resources.
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In the Incident Management System, __________ are functional crews assigned to perform a specific task such as ventilation or rescue.
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Within the Incident Management System, the positions of Safety, Liaison, and Information are:
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The Incident Management System is best defined as:
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What is the optimal number of individuals that one person should be supervising at an emergency incident?
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In order for the Incident Management System to function properly, it must contain all of the following components except:
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Under the Incident Management System, the __________ is responsible for determining the strategic goals for control of an incident.
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Under the Incident Management System, the __________ is responsible for implementing the tactical assignments to meet the strategic goal.
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Under the Incident Management System, the __________ Officer is responsible for providing factual and accurate information to the media.
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The arrival report should contain:
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United States fire loss statistics show that most structure fires, most fire damage, and most injuries and fatalities occur in __________ occupancies.
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Which of the following items would not be found in the risk/benefit philosophy of a risk management plan?
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Risk management is:
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The type of call, action taken, number of injuries or fatalities, and the property usage information are all entries to be included on an __________ report.
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A uniform data collection system used by most departments to track incident information is known as the:
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Of the following, the information that would not be contained on a fire report is the:
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Which of the following statements regarding fire reports is incorrect?
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Which of the following statements regarding fire incident reports is incorrect?
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Fire incident information is reported to the:
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The two most common ways the incident commander orders firefighters to evacuate a structure are to broadcast a radio message and:
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Audible warning devices for emergency evacuation should be:
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It is important that the communication center be kept advised of the actions taken at emergency scenes. Progress reports should include all of the following except:
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Fire departments that operate radio equipment must hold radio licenses from the:
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A(n) __________ System tracks fire department units on a map as they move around city or town streets.
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The __________ System can significantly shorten response time or enable a dispatcher to handle a greater volume of calls.
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In fire departments that have access to multiple radio channels, emergency operations should be:
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Which of the following is not true of cellular phones in reporting emergencies?
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The important difference between Basic 911 and Enhanced 911 is that:
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Computer-aided dispatch is:
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The communications center is:
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The benefit of a good scene size-up is all of the following except:
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Emergency communications backup power sources should:
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Status reports should be made ten minutes into the incident and at __________ minute intervals thereafter until the incident is under control.
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The initial report given by first arriving companies is called a:
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The report given to the I.C. from an interior crew which tells the I.C. the fire is controlled would be a(n):
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Which of the following is important to remember in placing a foam line in service using an in-line proportioner?
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Which is the most common type of foam proportioner used in the fire service?
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A __________ nozzle is used with a foam solution to produce a low-expansion, short-lasting foam.
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The elements needed to produce quality firefighting foam include:
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Aqueous Film Forming Foam (AFFF) is used in __________ percent concentrations.
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Class A foams are essentially wetting agents that __________ of water.
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Alcohol resistant AFFF (Aqueous Film Forming Foam) can be utilized on hydrocarbon fires at __________ percent proportions.
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Of the following characteristics, which is not an advantage of Class A foams?
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Which one of the following is not a method by which foam acts as a suppression agent?
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Which of the following is not a polar solvent?
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Petroleum-based fuels are __________ and float on water.
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In cases where a basement fire is inaccessible, __________ may be used to extinguish the fire.
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To produce the proper rate of foam on flammable liquids fire, a(n) __________ is necessary.
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For application of aqueous film-forming foam, eductors or proportioners operate on a(n) __________ principle.
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When making foam, in order for the nozzle and eductor to work properly:
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An in-line eductor should not be positioned more than __________ above the liquid surface of the foam concentrate in the container.
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Foams in use currently are of the mechanical type and must be __________ and __________ before they can be used.
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Study Notes
Incident Management System (IMS) Commands and Structure
- First company officer on the scene is in command until a chief officer arrives to assume command.
- Conflicting orders from multiple supervisors lead to frustration due to violation of unity of command.
- Division of labor in fire services is essential for assigning responsibility, preventing duplication, and making clear assignments.
- Policies provide guidance for decision-making in various scenarios.
Procedures and Components of IMS
- A procedure is a detailed guide directing specific actions.
- Planning is a major function of the Incident Management System, crucial for effective incident control.
- Essential components of an effective IMS include common terminology, unified command, and modular organization; prefire plans are not a core component.
NFPA Standards and Safety Protocols
- NFPA 1500 outlines minimum health and safety program requirements for fire departments.
- Emergency vehicle occupants should remain secured in their seats; riding on tailboards is prohibited.
- The Incident Commander has the authority to order additional resources for large-scale incidents.
Role Designations within IMS
- Divisions in IMS refer to geographical locations related to incident response.
- Safety, Liaison, and Information roles are designated as command staff positions within IMS.
- The Operations Chief implements tactical assignments while the Incident Commander sets strategic goals.
Incident Reporting and Fire Statistics
- Arrival reports should include situation evaluations, selected attack modes, and command information.
- Most structure fires, damage, injuries, and fatalities occur in residential areas, highlighting the need for focused safety measures.
- The National Fire Incident Reporting System collects data about fire incidents across the U.S.
Communication and Reporting Procedures
- Progress reports should be communicated every 10-15 minutes during an incident until controlled.
- Emergency communication centers must be well-equipped and informed about on-scene actions.
- Computer-aided dispatch improves response times and call volume handling.
Foam Usage in Firefighting
- In-line eductors are the most common foam proportioners in firefighting.
- High-expansion foam is effective for inaccessible basement fires.
- AFFF operates on a Venturi principle, and proper mixing ratios are vital for effective foam application.
Properties and Application of Foam
- Aqueous Film Forming Foam (AFFF) is used at concentrations of 1%, 3%, and 6%.
- Class A foams lower the surface tension of water, enhancing fire suppression capabilities.
- The effectiveness of foam varies based on the type of fuel involved, with polar solvents requiring special considerations for application.
Equipment and Techniques for Fire Suppression
- Audible warnings signal evacuations and must be heard at significant distances (at least 500 feet).
- Fire incident reports serve as legal documents and must accurately reflect the incident details.
- The use of foam requires consideration of hydraulic compatibility between nozzles and eductors; both must have matching flow ratings for efficiency.
General Best Practices
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Implementing an accountability system during evacuations is crucial for personnel safety.
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Emergency communications should have backup power sources to ensure reliability.
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Organizations must use standardized data collection systems to enhance response and reporting efficacy.### Firefighting Techniques and Concepts
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Solubility: Ability to mix with water, crucial for understanding how substances behave in firefighting applications.
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Friction Loss: Refers to the pressure lost as water moves through a hose line, impacting the effectiveness of water delivery at the nozzle.
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Fire Control Strategy: Certain fires, particularly those involving pesticides and gases, may be better left to burn out instead of using water, as water could exacerbate the situation.
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Flammable Liquid Fires: Best controlled using foam, which suppresses flames and prevents ignition spread.
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Flash Points: Liquids with flash points below 100°F are classified as flammable, indicating high risks associated with ignition.
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Flammable Vapors: Typically heavier than air, these vapors can pool in low areas, posing risks of ignition; proper ventilation is essential.
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Positioning Fire Apparatus: Position vehicles uphill and upwind during flammable liquid spills to prevent exposure to fire or toxic vapors.
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Combustible Liquids: These have flash points above 100°F, and understanding these characteristics helps in classifying fire risks.
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Fire Incident Management: The primary concern is controlling ignition sources during flammable liquids incidents to prevent ignition and escalation.
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Water Use in Fires: Water can serve as a cooling agent, mechanical tool, protective cover, or substitute medium during fire interventions.
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Hose Crew Actions: After sealing a flammable liquid container, the crew should continue applying water as they exit the area to prevent reignition.
Foam and Firefighting Equipment
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Foam Proportioning Methods: Include injection, premixing, induction, and batch-mixing; each method has specific applications in fire control.
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Post-Class B Fire Actions: After extinguishing with foam, areas should be monitored for reignition, emphasizing the importance of vigilance after a fire.
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Hydrocarbons: Identifying substances that are not hydrocarbons, such as ketones, aids in creating effective firefighting strategies.
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Disconnecting Electrical Service: The safest method for firefighters is to shut off the main power breaker/fuse in the panel box to prevent electrical hazards.
Structural Considerations in Firefighting
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Building Collapse Risks: The only effective measure to protect from imminent collapse is to remove personnel from the structure.
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Roof Types: A pitched or gabled roof has an elevation at the center with sloped edges, which can influence fire behavior and access.
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Structural Reinforcements: Signs such as large metal stars and tie rods indicate potential building collapse; firefighters should take special precautions in such cases.
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Fire Resistive Construction Hazards: The primary hazard comes from the contents rather than the structural members, requiring specific strategies to mitigate risks.
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Heat Transfer in Fires: Horizontal heat transfer can occur through wall openings and radiant heat but is not typically through ceilings and floors via direct flame contact.
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Construction Resistance: Fire-resistant construction exhibits the greatest resistance to structural damage from fire, crucial for ensuring safety during firefighting operations.
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Test your knowledge with this FFII study guide flashcard set. The cards cover important concepts such as command structure at fire scenes and employee compliance with orders. Ideal for fire service professionals and students preparing for exams.