Sprinkler Chart Questions (S12) 100% VERIFIED ANSWERS 2024/2025 SOLUTIONS, Exams of Business Administration

Download Sprinkler Chart Questions (S12) 100% VERIFIED ANSWERS 2024/2025 SOLUTIONS and more Exams Business Administration in PDF only on Docsity! Sprinkler Chart Questions (S12) 100% VERIFIED ANSWERS 2024/2025 SOLUTIONS 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 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 raised series of beams (usually steel) bearing on posts or walls to support mechanical equipment (usually on rooftops) Dunnage Hose designed to be used by trained fire fighters to combat fires beyond the incipient stage Attack Hose A non-collapsable hose used under positive pressure having an elastomeric or thermoplastic tube, a braided or spiral reinforcement, and an outer protective cover Booster Hose A hose with a jacket covered and lined with synthetic rubber or plastic Covered Hose A hose consisting of only a woven jacket that is usually of linen yarns and is of such quality that the yarn swells when wet, tending to seal the hose Unlined Hose The status of a hose house, on a rack, reel or fire apparatus ready for use. Does not include hoses in storage. In service Standpipe system that relies exclusively on the fire department to supply the system demanded Manual Standpipe Valve installed to regulate pressures in an entire fire protection system or standpipe system zone Master Pressure Reducing Valve Supervision by the holder of department certificate who is required to be on premises when duties of the certificate are being performed Personal Supervision Standpipe Systems are required in buildings that are over _______________ 6 foot, 75 feet in height Pressure restricting device shall be installed at each hose outlet where the static Pressure exceeds __________ 80 psi Used to prevent water from flowing the opposite direction Check Valve Allows full unobstructed flow and automatically closes when pressure is decreased. Fully closed when pressure reaches zero and prevents back flow. Swing Check Valve A type of control valve for a sprinkler system in which the position of the center screw indicates whether the valve is open or closed. OS&Y (Outside Stem and yolk) Valve When the sprinkler head opens it causes a _____________ in the piping Drop of pressure When the clapper has opened the valve is said to have ___________ Tripped About ____ of fires are extinguished or controlled when sprinklers are installed 96% 4% failure rate of sprinklers are due to Defective piping, closed supply valve, frozen water lines, improper maintenance and blocked supply lines Permission must be obtained from the local fire house to shut off a maximum of 10 sprinkler heads on a wet pipe system Existing Cold Weather Valves 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 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 Lateral braces are spaced At max 40 feet on center Lateral braces are required on All piping 2 1/2" and larger