MWS flashcard| 175 questions| with complete solutions

Identify five requirements for an MWS apparatus that can be found in NFPA 1901. correct answer: An MWS apparatus equipped with a fire pump must have a tank to pump line at least 2 inches in diameter and be capable of supplying the pump with 500 gallons per minute until at least 80% of the water in the tank is empty. And MWS apparatus must be equipped with at least one external feel connection connected into the tank that allows the tank to be filled at a minimum rate of 1000 gallons per minute. The external fill connection should be equipped with a valve, strainer, and a 30° elbow. Valves that are 3 inches or larger must be of the slow closing design. And MWS apparatus must have at least three large tank discharges capable of just charging 90% of the tank volume at an average rate of 1000 GPM. You were stationed in Alaska in December. You 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. correct answer: Drain the piping pump and booster lines to prevent damage. During MWS apparatus service testing the atmospheric air temperature should be between correct answer: 0° F and 100° F Identify three pieces of equipment needed to conduct service testing on a MWS apparatus equipped with a fire pump. correct answer: Tachometer, smoothbore tips. External test gages. 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, independent pump certification test, hydrostatic test, purchase acceptance test. When performing a vacuum service test, once the engine is turned off, the column of mercury should fall no more then. correct answer: 10 inches in 5 minutes. Identify three critical items that should be included on MWS apparatus daily inspection checklist. correct answer: Apparatus unit identification number, inspected by column, remarks column. When maintaining MWS apparatus records, you should: correct answer: Refer to your departments standard operating procedures for specific guidance.