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RELAY PUMPING

RELAY PUMPING. Task Force-7 Engine 14 Engine 13 Batt. 2. Dual Pumping. In a dual pumping operation, two pumpers are connected intake to intake in order to take advantage of an excellent water source. Tandem Pumping.

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RELAY PUMPING

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  1. RELAY PUMPING Task Force-7 Engine 14 Engine 13 Batt. 2

  2. Dual Pumping • In a dual pumping operation, two pumpers are connected intake to intake in order to take advantage of an excellent water source.

  3. Tandem Pumping • In tandem pumping, the engine connected to the supply source discharges water into the intake of the second engine.

  4. I. Definition: • The process of using two or more pumpers to move water through hoselines over a long distance by operating the pumpers in series.

  5. A. Constant Pressure {Equal Distance Method}

  6. Constant Pressure • 1. Each pumper lays same amount • 2. 1000 ft. is common distance • 3. 175 psi E.P. • 4. Attack pumper - constant flow • 5. Attack pumper - dump line

  7. B. Advantages

  8. B. Advantages • 1. No guess work in placement • 2. Minimal calculations {hydraulics} • 3. Fewer pumpers needed

  9. C. Relay Operating Procedures

  10. C. Relay Operating Procedures {Source & Relay Pumpers} • 1. Source pumper gets water • 2. Relay pumper prepares for water • 3. Source pumper opens discharge • 4. Relay pumper engages pump • 5. Relay advances throttle to 175 psi • 6. All relays maintain 20 -50 psi residual • 7. Each pumper duplicates these steps

  11. D. Relay Operating Procedures {Attack Engine}

  12. D. Relay Operating Procedures {Attack Engine} • 1. Establish discharge pressure [N.P.] • 2. All pumpers then set relief valves • 3. Cavatation prevention

  13. E. Shutdown Procedures • 1. Attack engine shuts down first • 2. Shutdown in reverse procedure • 3. Water is allowed to discharge through dump line • 4. Each pumper in line follows reverse shutdown procedure

  14. F. Communications

  15. F. Communications • Like all other fireground operations, good communications are vital to relay pumping.

  16. F. Communications • Separate radio channel early on. • I.C. / Operations • Needs to be modified to suit A.F.D.

  17. F. Communications • Separate radio channel early on. • I.C. / Operations • Needs to be modified to suit A.F.D. • S.O.P.’s ? ? ?

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