1. Task Force-7 Engine 14 Engine 13 Batt. 2
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
ft. is common distance
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 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 ? ? ?