Ultimate NFPA Practice Test

Class A fire extinguishers are designed to extinguish fires involving ordinary combustible materials such as paper, wood, cloth, and plastics. In this scenario, the trash can full of paper ignited by a cigarette falls under the Class A category. Therefore, a Class A fire extinguisher is the appropriate choice to effectively put out the fire.

A wet pipe sprinkler system is continually charged with water under pressure, meaning that water is always present in the pipes. When one or more sprinklers are activated by heat from a fire, the water is immediately discharged from the activated sprinklers. This type of system is the most common and simplest form of sprinkler system, as it is always ready to respond to a fire and requires minimal maintenance.

The purpose of a fire department connection is to maintain and boost the pressure and amount of water flowing through a sprinkler or standpipe system. This connection allows the fire department to easily connect their hoses to the building's water supply, ensuring that an adequate water supply is available for firefighting operations. By maintaining and boosting the water pressure, the connection helps to ensure that the sprinkler or standpipe system can effectively suppress the fire and protect the building and its occupants.

NFPA 10 is the correct answer because it specifically addresses fire extinguisher installation. This standard provides guidelines for the selection, placement, inspection, maintenance, and testing of portable fire extinguishers. It covers various aspects such as the types of extinguishers suitable for different fire hazards, the number and location of extinguishers required in different occupancies, and the proper installation and signage requirements. NFPA 10 is an important reference for ensuring that fire extinguishers are correctly installed and readily available for use in case of a fire emergency.

The purpose of a fire pump is to increase the water supply pressure. This is crucial in firefighting situations as it allows for an adequate amount of water to be delivered to the fire, ensuring effective suppression and control. By boosting the pressure, the fire pump enables the water to be delivered with enough force to reach higher floors or distant areas, overcoming any obstacles or resistance in the water distribution system. This increased pressure ensures that the water can effectively extinguish the fire and protect lives and property.

The given correct answer is "Critical Deficiency". This suggests that when boxes stack up to the sprinkler level, it is considered a critical deficiency. This implies that stacking boxes to the sprinkler level poses a significant risk or hazard, potentially impairing the functioning of the sprinkler system or compromising fire safety measures. It is important to address this issue promptly to ensure the safety and compliance of the facility.

The jockey pump rating would be 25 GPM at 135 PSI. This is because a jockey pump is typically used to maintain pressure in a fire protection system when there is no fire. It is designed to operate at a lower flow rate and pressure compared to the main fire pump. In this case, the jockey pump is rated at 25 GPM (gallons per minute) and 135 PSI (pounds per square inch), which is suitable for maintaining the required pressure in the system during normal conditions.

The correct answer is 30 minutes because a diesel fire pump should be run weekly for a minimum of 30 minutes to ensure that it is in proper working condition. Running the pump for this duration allows any potential issues to be identified and addressed, ensuring that the pump is ready for use in case of a fire emergency. A shorter duration may not provide enough time to detect any problems, while a longer duration may be unnecessary and potentially wasteful.

A fire department connection is not required for a building located in a remote area that is inaccessible for the fire department because in such cases, it would be impractical for the fire department to connect their equipment to the building's fire protection system.

A green triangle containing a letter indicates that an extinguisher may be used on Class A fire. Class A fires involve ordinary combustible materials such as wood, paper, and cloth. The green triangle symbolizes that the extinguisher is suitable for this type of fire.

High-temperature sprinklers must be tested every 5 years. This is necessary to ensure that the sprinkler system is functioning properly and will be effective in case of a fire. Regular testing helps to identify any potential issues or malfunctions that could hinder the sprinkler system's performance. By testing every 5 years, any necessary maintenance or repairs can be carried out to ensure the sprinklers are in optimal working condition. This helps to enhance fire safety and protect lives and property.

The storage tank for the diesel engine fuel is sized to contain at least an 08 hours supply. This means that the tank is designed to hold enough fuel to power the diesel engine for a minimum of 8 hours. This is important to ensure that the engine has enough fuel to operate for an extended period of time without needing to be refueled. It is crucial for applications where a continuous power supply is required, such as in backup generators or marine vessels.

The pressure produced by a column of water is determined by the height of the column and the density of water. The pressure is directly proportional to the height of the column. In this case, since the height is only 1 foot, the pressure produced is relatively low. The answer of 0.433 psi is the correct option as it represents the pressure produced by a column of water 1 foot high.

A fully sprinklered structure containing 500 sprinkler heads requires a minimum supply of 12 spare heads. This is because it is recommended to have at least 2% of the total number of sprinkler heads as spare in case any of them become damaged or need replacement. In this case, 2% of 500 is 10, so having 12 spare heads ensures that there are enough replacements available.

Monoammonium phosphate is commonly known as ABC powder.

Hand-held portable fire extinguishers are required to be installed in a way that their tops are not more than a certain height above the floor. In this case, the correct answer is 40 pounds and 3.5 feet. This means that fire extinguishers weighing more than 40 pounds should be installed with their tops not more than 3.5 feet above the floor. This regulation ensures that the fire extinguishers are easily accessible and can be quickly used in case of an emergency.

The correct answer is 1896. The National Fire Protection Association (NFPA) was established in 1896 in the USA. It is a global nonprofit organization that aims to reduce the burden of fire and other hazards by providing codes and standards, research, training, and education. The NFPA's work is focused on fire prevention, safety, and protection, and it plays a crucial role in promoting fire safety measures and guidelines worldwide.

The wet type system should not be considered when the exposed temperature falls below 4 ℃. This is because at temperatures below 4 ℃, the water in the system can freeze, leading to potential damage to the pipes and components. Therefore, it is important to use alternative systems or take preventive measures to ensure that the water does not freeze in such low temperatures.

According to NFPA 20, a fire pump should be designed to deliver a minimum of 65% of its rated pressure at 150% of its rated flow. This means that the pump should be able to provide a pressure that is at least 65% of its maximum capacity when delivering water at a flow rate that is 1.5 times its rated flow. This ensures that the pump can handle the increased demand during a fire emergency and provide sufficient water pressure to the sprinkler system.

The total combined Inside and Outside hose allowance for an ordinary hazard occupancy is 250 GPM. This means that the water flow rate required for both inside and outside hose operations in an ordinary hazard occupancy is 250 gallons per minute.

The A rating in fire extinguisher rating refers to the water equivalency rating. Each A is equivalent to 1.25 gallons of water.

The correct answer is 15 seconds. According to NFPA, the cranking and resting interval for a fire pump diesel engine drive controller is 15 seconds. This means that the engine should be cranked for 15 seconds and then allowed to rest for 15 seconds before cranking again. This interval helps ensure that the engine is properly lubricated and cooled between crank cycles, reducing the risk of damage or failure.

In an extra hazard occupancy where the hydraulically calculated system water flow is monitored at an approved, constantly attended location, the required water supply duration is 90 minutes. This means that the water supply must be able to provide a continuous flow for at least 90 minutes to effectively combat any potential hazards in the occupancy. This duration is necessary to ensure that there is enough water available to suppress the fire and prevent further damage or danger.

NFPA 291 is the correct answer because it is the NFPA standard that specifically deals with the Recommended Practice for Fire Flow Testing & Marking of hydrants. This standard provides guidelines and procedures for conducting fire flow tests on hydrants and also covers the proper marking and maintenance of hydrants. NFPA 1962 is the standard for the care, use, inspection, service testing, and replacement of fire hose, nozzles, and appliances, so it is not directly related to hydrant testing. NFPA 25 is the standard for the inspection, testing, and maintenance of water-based fire protection systems, and NFPA 14 is the standard for the installation of standpipe and hose systems, so they are also not relevant to hydrant testing.

The approximate discharge time of multipurpose ABC powder with a 30 lb weight is approximately 10 to 25 seconds. This means that it takes between 10 and 25 seconds for the powder to be fully discharged from the device.