Volume discharged determined by design of nozzle, pressure at nozzle To be effective, stream must deliver volume of water sufficient to absorb heat faster than it is being generated (Continued) Firefighter I Low-volume stream Handline stream Master stream Firefighter I Measured in pounds Nozzle reaction formulas NR= 1.57 Trainee shall list three (3) reasons of how excessive pressure develops in fire hose.ģ NOZZLE REACTION Counterforce directed against a person holding a nozzle or a device holding a nozzle by the velocity of water being discharged. Trainee shall list the different types of pressure relief systems used in the fire service.
Trainee shall list the reasons a pressure relief system is used.
Trainee, given a pump panel, shall identify a pressure relief system. Trainee shall demonstrate the operations of the pumper pressure relief system and/or pressure control valve as follows: A. Trainee shall list the proper procedures for inspection and maintenance of fire fighting nozzles. Trainee shall list factors that influence fire steams. Trainee, given a diagram of various nozzles, shall list major parts and trace flow routes through each. Trainee shall calculate the water flow rate needed to control fire in a room that is 20'x20'x 8'. master stream Trainee shall define water hammer and list ways of preventing water hammer. Trainee, given the proper information, shall list advantages and disadvantages of various nozzles: A. Trainee shall calculate nozzle reaction for various nozzle pressures. Trainee, given a 2½ inch straight stream nozzle, shall demonstrate the proper opening and closing techniques and line movement procedures. Trainee shall list the different types of fire streams. Pump Operations Intermediate SFFMA Objectives: – 8Hrs receivedĢ SFFMA Objectives Trainee shall identify the type, design, operation, nozzle pressure and flow in GPM of various types of nozzles.
1 Intermediate SFFMA Objectives: 24-02.01 – 24-02.11 8Hrs received
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