Issue 11 and Volume 144.

DUAL PUMPING TRAINING NOTEBOOK “What is dual pumping?” you might ask. One source defines it as the process by which a pumper receiving water from a hydrant supplies a second pumper with the residual hydrant pressure by connecting the suction intakes of the two pumpers with a suction line. (Residual hydrant pressure is the measure of the reserve capacity of a fire hydrant.) You might say, “Wait a minute. That sounds like tandem pumping to me.” And you would be right. Many older textbooks on hydraulics and fire engineering call this procedure “tandem pumping,” and 1 always was taught that it is tandem pumping. While researching 1 have found that tandem pumping now is defined as a short relay operation in which the pumper taking water from a supplysource pumps into the intake of a second pumper. The second pumper boosts the pressure of the water to pressures higher than…

Subscribe to unlock this content

Subscribe Now