Monday Drill Results |
By Water Supply Officer Joseph Guyther | |
July 30, 2018 | |
Lessons learned on the regular drill on 7/30/18. The “drill” was really an experiment on several evolutions that we had not conducted in the past. Evolution 1 – set up a single lane folding tank (SLT). In rare instances where a working fire incident is located on a roadway too narrow for shuttle apparatus to pass by the deployed folding tank, it may be necessary to restrict the opening of the tank to allow shuttle apparatus pull up beside the tank to side dump or pass by the tank to turn around beyond the tank. In that case the tank is positioned in front of the supply pumper and restricted to an open width of 8 feet (the width of the supply pumper). Tie offs are utilized to restricting the folding tank from opening to its full width. The photo shows the setup. LESSONS LEARNED: Evolution 2 – set up a second SLT to compensate for the reduced capacity of the first SLT. This evolution also required setting up a transfer siphon to transfer water to the folding tank with the supply pumper draft set up. LESSONS LEARNED: Evolution 3 – A drafting operation using the front intake on E-23. The pumper test site was utilized with 20 feet of hard suction and an approximately 10 foot lift. This is the standard NFPA setup for testing fire pumps. A 4 inch supply line was used to supply the test jig equipped with a stream shaper, an Akron pitot gage and a 2” tip. The tip pressure at pump cavitation was 55 PSI indicating an 881 GPM flow. Evolution 4 – A drafting operation using the rear intake with 20 feet of hard suction and an approximately 10 foot lift. One 4 inch supply line and one 3” supply line was used to supply the test jig equipped with a stream shaper, an Akron pitot gage and a 2” tip. The tip pressure at pump cavitation was 80 PSI indicating a 1063 GPM flow. LESSONS LEARNED Many thanks to all of the members who helped to set the multiple evolutions in the allotted 2 hour session. A job well done. |
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Units: | Tanker 2 (3000 gallons), Engine 24 (2000 gallons) Engine 23 (750 gallons) |