Operations mws - Study guides, Class notes & Summaries

Venturi Effect correct answer: When fluid is forced under pressure through a restricted orifice, there is a decrease in the pressure exerted against the side of the constriction increase in the velocity of the fluid. Because the surrounding air is under greater pressure, it rushes into the area of lower pressure. Jet Assisted Dumps Disadvantages correct answer: 1. The apparatus must be equipped with a fire pump 2. The fire pump must be engaged before dumping the water from the tank. 3...

Mobile water supply questions and answers 100% pass You are stationed in Alaska in December. You've just come back from a company inspection to find that your stall door will not operate and cannot be fixed until the following day. To prevent damage from freezing you should: Drain the piping, pump, and booster lines to prevent damage. When testing the priming device on an MWS apparatus with a fire pump with a capacity less than 1,500 gpm, the priming device should be able to create the necess...

MWS Questions and Answers Latest 2023 Graded A+ The key thing to remember when conducting an inspection of an MWS apparatus is to be systematic During the vacuum service test, the system vacuum and pump priming device should achieve a column of mercury of at least 22 inches During the pre-service hydrostatic test, each pump is hydrostatically tested at a minimum of 500 psi over the pump's designed maximum operating pressure for ten minutes What is not an important reason for maintaining insp...

MWS EOC Questions with complete solution 2023/2024NFPA 1901 - correct answer Standard for Automotive Fire Apparatus MWS must carry how much water - correct answer 1000 gallons but most carry Apparatuses carrying less than 2500 gal are best for - correct answer Shuttle operations Apparatuses carrying more then 2500 gal are best for - correct answer Stationary water supply NFPA 1901 requirements - correct answer One external fill connection Filled at a minimum o

A major advantage of a positive displacement pump over a centrifugal pump is that it can: - Pump air, making it self-priming. The efficiency of many priming devices is improved through the use of: - An oil-injection system The big advantage of centrifugal pumps over positive displacement pumps is that centrifugal pumps: - Can provide water in variable pressures and volumes. On large diameter lines, gate valves are most often controlled by: - Handwheels To disengage the pump on PT...

Two phase conductors of a 138kV transmission line come in contact due to a storm, creating a phase to phase fault. The distance relay at each end of the line tripped and isolated the line. What two measured parameters of the line caused the distance relay to operate? Temperature and length MWs and MVARs Voltage and current Resistance and Impedance - Voltage and current What is the main cause for having low voltage on the Transmission and Distribution system? Over generation in t...

IFSTA recommends water shuttle operations to use at least how many pumpers correct answer: Two Gravity dumps rely on what to empty water from the tank ? correct answer: Nature's gravitational pull Jet assisted dumps use what to empty tank ? correct answer: Use small diameter in line discharge that is inserted into the piping of the large tank discharge - discharge is supplied by the pump It is important that the water tank be equipped with what ? correct answer: Tank vents Succe...

If a Balancing Authority does not comply with the Control Performance Standard, the Balancing Authority is not permitted to provide which of the following for any other Balancing Authority entities? Regulation of other services related to control performance 1. It is the obligation of each Balancing Authority to fulfill its commitment to the Interconnection and not ________ the other balancing Authorities in the Interconnection Burden A Balancing Authority is performing Overlap Regul...

MWS EOC Latest 2023 Graded A NFPA 1901 Standard for Automotive Fire Apparatus MWS must carry how much water 1000 gallons but most carry 1500-3000 Apparatuses carrying less than 2500 gal are best for Shuttle operations Apparatuses carrying more then 2500 gal are best for Stationary water supply NFPA 1901 requirements One external fill connection Filled at a minimum of 1000 GPM Equipt with valve, strainer, and 30 degrees elbow Valves 3in or larger must be slow closing design Dump valve on left...

During MWS apparatus service testing the atmospheric air temperature should be between correct answer: 0° F and 100° F When testing the priming device on MWS apparatus with a fire pump with a capacity of less than 1500 GPM the priming device should be able to create the necessary vacuum in 30 seconds to lift water 10 feet through. correct answer: 20 feet of hard suction hose. Identify four pre-service test for an MWS apparatus equipped with a fire pump correct answer: Road test, indep...