Sprinkler Chart (S12) Questions and answers already graded A+| Updated & Verified | 2025, Exams of Agricultural engineering

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Sprinkler Chart (S12) Questions and answers

already graded A+| Updated & Verified | 2025

How often shall the stem of an OS&Y Valve be lubricated - ✔✔Annually The 3 year dry pipe trip test is to be performed by whom? - ✔✔MP & MFSPC Fire department connections are to be inspected how often? - ✔✔Quarterly Water motor gongs are to be tested how often? - ✔✔Quarterly In a water spray fixed system inspection if the strainer is found corroded what color tag is required? - ✔✔Yellow A sprinkler head with a red frame has a temperature classification of? - ✔✔Extra High (325 - 375°F) The Hydraulic name plate shall be inspected how often? - ✔✔Quarterly What color tag is required when sprinkler heads are found to be lightly corroded? - ✔✔Orange Obstructions in sprinkler systems shall be investigated how often? - ✔✔ 5 Years

What color tag is required when the circuit breakers on a special service pump are over 2 years old? - ✔✔Orange What color tag is required when sprinkler heads made prior to 1920 have not been replaced? - ✔✔Orange, notify FDNY after 30 days During an operational test of a foam water sprinkler system, if the nozzles are plugged what color tag is used? - ✔✔Red Steel water storage tanks without corrosive protection are to be inspected how often? - ✔✔ 3 years A sprinkler head with a white frame has a temperature rating of? - ✔✔ 175 - 225°F The weekly test of an electric fire pump is how long? - ✔✔ 10 minutes The weekly test of a Diesel fire pump is how long? - ✔✔ 30 minutes Upon inspection of a sprinkler system, if the hydraulic nameplate is missing what color tag is used? - ✔✔Yellow When inspecting a preaction system, if the electrical components are not in service what color tag is used? - ✔✔Red Vane type water flow devices shall be tested how often? - ✔✔Semi-annually

Blue Bulb temperature - ✔✔ 250 - 300°F Purple Bulb temperature - ✔✔ 325 - 375°F Black Bulb with Green Frame temperature - ✔✔ 400 - 475°F Black Bulb with Orange Frame Temperature - ✔✔ 500 - 650°F The temperature for water tanks shall not be less than - ✔✔40°F (4°C) Tanks without supervised water level alarms shall be inspected - ✔✔Monthly Tanks with supervised water level alarms shall be inspected - ✔✔Quarterly Records of all system inspections, tests, servicing, and maintenance shall be kept on premises for - ✔✔A minimum of 3 years The building owner shall assign an to comply with city requirements - ✔✔Impairment Coordinator White Disc, Red Tag - ✔✔System fully out of service Blue Disc, Red Tag - ✔✔System partially out of service

Green Tag, No Disc - ✔✔System free of defects and in full service Glycerin solution not greater than - ✔✔50% Glygol solution not greater than - ✔✔40% Records shall be posted near - ✔✔Main control valve A connection on the exterior of a building, through which the fire department can pump supplemental water into the sprinkler system, standpipe, or other system. (Formally known as a Siamese connection) - ✔✔Fire Department Connection A valve connection on a water supply system having one or more outlets used to supply hose and fire department connections with water - ✔✔Fire Hydrant Sign attached to a hydraulically calculated sprinkler system indicating the design density, required gallons per minute and pressure for the system to operate properly - ✔✔Hydraulic Placard A method of sizing automatical sprinkler systems indicating the design density, required Gallons per min, and pressure for system to function properly - ✔✔Hydraulic Calculated Systems A sprinkler head with an orifice size from 3/4" - less than 1" - ✔✔Large Orifice Sprinkler

A pilot operated pressure reducing valve that may be used with a fire or booster pump designed for the purpose of preventing the incoming water supply from dropping below a set pressure - ✔✔Pressure Control Valve A valve designed for the purpose of reducing the downstream water pressure under both flowing (residual) and non flowing (static) confitions - ✔✔Pressure-Reducing Valve A device designed to reduce, regulating, controlling or restricting water pressure - ✔✔Pressure Regulating Devices A device that relieves excess water or air pressure from fire protection piping systems - ✔✔Pressure Relief Valve A tank using air pressure to supply water to fire protection systems. (1/3 air 2/3 water) - ✔✔Pressure Tank A system where fire protection piping services both 2 1/2in outlets for fire department use and outlets for automatic sprinklers - ✔✔Combination Standpipe & Sprinkler System A standpipe system that is vertically subdivided as required by code into multiple zones in order to limit the maximum operating pressure. Each zone will have it's own individual automatic water supply. - ✔✔Standpipe, Multi-Zone Measure of system pressure under non flow conditions - ✔✔Static Pressure

A device capable of removing all solids of sufficient size from water - ✔✔Strainer A surge in pressure when a high velocity flow of water is abruptly shut off. Can be 7 or more times the static Pressure. - ✔✔Water Hammer A standpipe system having piping containing water at all times - ✔✔Wet standpipe system Used only by fire fighters. Hoses are 2 1/2" in diameter. - ✔✔Class 1 Standpipe system Used by occupancy of building in case of fire. Hoses are 1 1/2" in diameter - ✔✔Class 2 Standpipe system Used by occupancy of building or fire fighters. Hose can be adjusted to either 1 1/2" to 2 1/2" in diameter - ✔✔Class 3 Standpipe system Can be used to increase pressure in a standpipe system - ✔✔Fire Pump In a dry pipe system there is a delay between the opening of a sprinkler head or standpipe nozzle and the discharge of water. Delay is due to time required for air to leave the systems piping. This difficulty can be overcome by the installation of - ✔✔Quick Opening Devices Standpipe Systems are required in buildings that are over - ✔✔ 6 foot, 75 feet in height

Dry Pipe Sprinklers are installed where a Wet Pipe System - ✔✔Cannot be heated to prevent freezing Dry Pipe Sprinkler Systems are usually set to above the normal trip level - ✔✔ 15 - 20 psi Two devices are used to reduce the time needed to open the clapper, an and an

. Both automatically activated when a drop of 2 psi in air pressure is detected. - ✔✔Accelerator, Exhauster Under normal conditions there is no water in the piping due to the serious dangers of water damage - ✔✔Preaction Sprinkler Systems Heat responsive devices - ✔✔Commonly used to trip preaction valves Special preaction system shuts off the water when fire has been put out - ✔✔Preaction System with Recycling Feature FDNY connect: Silver - ✔✔Non-Automatic Dry Sprinkler Systems In this type of system all pipes are normally dry. Water is supplied when needed but pumping water into the system through FDNY connection - ✔✔Non-Automatic Dry Sprinkler Systems Prevent Freeze up - ✔✔Automatic Ball Drip

When responding to an alarm most Fire Departments supply water to the first - ✔✔Standpipe System FDNY connection to Automatic Sprinkler System color: - ✔✔Green FDNY connection to Non-Automatic Sprinkler Systems color: - ✔✔Silver FDNY connection to Standpipe System color: - ✔✔Red Local Law 58/2009 requires color coding of fire Standpipe and Sprinkler Systems to have risers, cross connection to the water supply piping painted - ✔✔Red FNDY connection to a combined Standpipe/Sprinkler system to be colored: - ✔✔Yellow Automatic ball drip device shall be - ✔✔Installed in the horizontal position The air pressure in Pressure Tanks shall be at or above - ✔✔ 75 psi Limited Supply System - ✔✔Where a small pressure tank is accepted as the water supply The amount of pressure with which the water is discharged from the pump - ✔✔Total Head

When sprinkler heads open they are said to be - ✔✔Fused Deluge system is equipped with - ✔✔Open sprinkler heads and no water in the piping Deluge systems are suitable for - ✔✔Hazardous Occupancies Deluge valve opens allowing water to be discharged from - ✔✔All Sprinkler Heads An automatic ball drip on a standpipe FDNY connection that leaks under normal conditions is - ✔✔An indication of a defective check valve Automatic fire pumps must have their suction under - ✔✔Positive Head Positive Head definition - ✔✔Water supplying the pump must be fed into the pump under pressure Sprinkler Heads are factory tested to withstand without leakage or injury - ✔✔400psi Systems using large drop sprinkler heads are used to - ✔✔Break through strong updrafts of high challenge fires After a fire has been extinguished no control valves should be closed except - ✔✔On the order of the fire officer in charge

Gravity tanks should be - ✔✔At least 25 feet above the highest line of sprinkler heads Automatic fill pumps supply water to gravity tanks at a rate of - ✔✔ 65 Gal per minute Booster pumps are used when - ✔✔Water pressure at highest sprinkler head does not meet needs of sprinkler system Temperature of fire pump rooms should be - ✔✔Above 40°F at all times Standard wall steel pipe with diameters 1 inch and 1 1/4" should have hangers placed - ✔✔At max 12 feet apart All other pipe diameters (except 1" or 1 1/4") should have hangers - ✔✔At max 15 feet apart Sway bracing is required to be installed on sprinkler systems in buildings built - ✔✔After 1998 Freezing point of antifreeze should be tested annually by measuring specific gravity with a - ✔✔Hydrometer or Refractometer Control valve for the building may also be on the outside wall or attached to a upright post known as the

• ✔✔Post indicator valve