Driver operator formulas

1: find pressure drop (static - residual) 2: square the number of lines currently flowing, or that you're going to potentially be flowing (this equals your multiplication factor) 3: then multiply the multiplication factor by the original pressure drop number from step 1 (this equals your resultant pressure drop) 4: subtract the resultant pressure drop from the static pressure.  · Questions and Answers. 1. The minimum qualifications for driver/operators are set by NFPA , Standard for: A. Fire Department Occupational Safety and Health Program. B. Fire Apparatus Driver/Operator Professional Qualifications. C. Comprehensive Occupational Medical Program for Fire Departments. and the condition of the lining. These factors give rise to the formula for computing friction loss: FL = C·Q²·L Where: FL = friction loss in psi C = coefficient (constant factor - see below) Q = flow rate in gallons per minute/ L = hose length in feet/ Friction Loss Coefficients (C): 1¾" - 2½" - 3" 4" - .

basic equation every pump operator needs to calculate when operating the fire pump. today, many pump pan-els have flow meters that allow the pump operator to match the readout on the pump panel with the gallon-per-minute (gpm) flow of the selected nozzle. this is a disservice to the integrity of the pump operator. a knowledgeable operator. Start studying Pumping Apparatus Driver/Operator Handbook Formulas. Learn vocabulary, terms, and more with flashcards, games, and other study tools. manufacturers of hose and nozzles, the friction loss formula (2Q 2 + Q) is inaccurate. The new materials are much less resistant to water flow, and therefore have less friction loss. Consequently, IFSTA has developed the Coefficient Formula to accommodate the new hose and/or nozzles. The Coefficient Formula (Coefficient x Diameter Squared x Length.

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