CFPS Exam Dumps - NFPA Fire Protection Specialist Questions and Answers

NFPA 484: Standard for Combustible Metals, 2020 Edition, provides requirements for the storage and handling of aluminum powders, flakes, and pastes. This standard covers the production, processing, finishing, handling, recycling, storage, and use of all metals and alloys that are in a form capable of combustion or explosion. It also covers operations where metal or metal alloys are subjected to processing or finishing operations that produce combustible powder or dust.NFPA 484 includes specific chapters for various metals and alloys, including aluminum and aluminum alloys12

References:

• NFPA 484: Standard for Combustible Metals
• NFPA 651: Standard for the Machining and Finishing of Aluminum and the …

The minimum carbon dioxide design concentration for extinguishment of an ethylene fire is43%. This is based on the cup burner method, which is a standard test to determine the flame extinguishing concentration of a gaseous agent for a liquid fuel. Ethylene is a flammable gas that can form a liquid under pressure. The cup burner method involves placing a liquid fuel in a metal cup with a central nozzle, and flowing a gaseous agent through the nozzle to create a diffusion flame. The gaseous agent is gradually increased until the flame is extinguished.The minimum concentration of the gaseous agent required to extinguish the flame is recorded as the flame extinguishing concentration1.According to a study by NIST, the flame extinguishing concentration of carbon dioxide for ethylene was found to be 43%1.This value is also consistent with the NFPA 12 standard, which specifies the minimum design concentrations of carbon dioxide for various fuels, including ethylene2.

Fire alarm visible appliance source intensity is measured in candela, which is the unit of luminous intensity in a given direction. Candela is defined as the amount of light emitted by a single candle in a specific direction. The intensity of a strobe light depends on the candela rating, the flash rate, and the flash duration. The higher the candela rating, the brighter the light. The National Fire Protection Association (NFPA) and the Americans with Disabilities Act (ADA) have established minimum and maximum candela ratings for fire alarm visible appliances in different locations and applications.References:Strobe Light Requirements: Proper location of visible notification …;Handbook of Visual Notification Appliances for Fire Alarm Applications;Audible Visible Appliance Reference Guide - Fire - studylib.net

The maximum allowable number of clients for a family day-care home varies by state and territory, but generally ranges from four to six children unrelated to the operator. A family day-care home is a facility in which a small group of children receive child care services in the provider’s own home, such as a house, apartment, or condo unit1. To ensure a safe care environment, states and territories use child care licensing regulations to limit the number of children, as well as the number of infants and toddlers, that can receive care in a family day-care home1. Some states and territories may also offer certification or registration to help ensure some basic health and safety standards in certain home-based child care programs1. To learn more about how your state or territory regulates family day-care homes, you can visit the child care consumer education website and child care resource and referral agency for your state or territory1. References:

• Family Child Care Homes | Childcare.gov

According to the web search results, the goals of the first edition of NFPA 13D were to provide sufficient time for safe egress or rescue, economic viability, and limit damage to the dwelling. The first edition of NFPA 13D was published in 1975 and was based on the concept of a “life safety” sprinkler system that was intended to protect the occupants of one- and two-family dwellings and manufactured homes from fire.The first edition of NFPA 13D stated that the system was not designed to protect the property or contents from fire damage, but rather to provide a tenable environment for escape or rescue1.The first edition of NFPA 13D also recognized the need for economic viability of the system, and therefore allowed for reduced water supply and piping requirements compared to other sprinkler standards2.The first edition of NFPA 13D did not explicitly state the goal of limiting damage to the dwelling, but it implied that the system would have some beneficial effect on the fire spread and severity by stating that the system was designed to prevent flashover in the room of fire origin1.References:

• NFPA 13D: Standard for the Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes, 1975 Edition, Section 1-11
• Fire Protection Handbook, 20th Edition, Volume 1, Chapter 8, Section 8.2.1.22

The measurement of a fluid’s resistance to flow is calledviscosity.Viscosity is the property of a fluid that describes how easily it can deform or move when subjected to a shear stress, such as the force exerted by a pipe wall or a pump1. A fluid with high viscosity, such as honey, resists flow and requires more pressure to overcome the friction between its layers.A fluid with low viscosity, such as water, flows easily and has less frictional resistance2.Viscosity affects the hydraulic properties of water for fire protection systems, such as the flow rate, pressure loss, and pump power3. Viscosity is usually expressed in units of pascal-second (Pa s) or centipoise (cP) for liquids, and is dependent on the temperature and composition of the fluid.References:

• Viscosity | Definition, Facts, Formula, Units, & Examples
• Viscosity – The Physics Hypertextbook
• Fire Pump Types | NFPA
• [12.4: Viscosity and Laminar Flow; Poiseuille’s Law]

ANSI S1.4a

Sound meters used to test notification appliances in fire alarm systems shall comply with the standard ANSI S1.4a, Specifications for Sound Level Meters, Type 2 requirements, according to NFPA 72 2010, the National Fire Alarm and Signaling Code.This standard specifies the performance and accuracy criteria for sound level meters that are used to measure the sound pressure levels of audible signals in fire alarm systems1