H O U ST ON F I RE D E PA RT ME N T P U MP O P ER AT OR P R O GR AM VAL JAHNKE TRAINING FACILITY

1. HH HOUSTONFIREDEPARTMENT PUMPOPERATORPROGRAM VAL JAHNKE TRAINING FACILITY

2. Developing Effective Water Supply Operating Guideline

3. First Arriving Engine • May start developing water supply • Consider fire load • Consider fire conditions • Next company arrival time • Consider nearest water source • Consider driveways or dead ends • Inform next company of actions needed (forward or reverse lay) • Communicate GPM flow to supply company(s)

4. Supply Engine(s) • Use side intakes only • Avoid rear intake (restrictive) • 3rd LDH line in could use rear intake • Multiple lines from hydrant to engine • 6” soft suction attached to steamer • adapt 2 1/2” to 4” at hydrant (both if necessary) • use water thief(s) • Will need 2 1/2” female to 4” male adapters

17. Supply Engine(s) • Water flow from 2 1/2” pump discharge • Over 1,000 gpm • 2” tip @ 80 psi delivers 1,000 gpm • Dual lines between engines • Reduces gpm flow in hose by half • Greatly reduces friction loss in hose • Engine Pressure • E.P. = T.F.L. + 20 (50)

21. Relay • Supply engine • Starts water flow • Maintains correct engine pressure • Intermediate engine(s) • Should be pumping same as supply engine if hose lay is the same • Attack engine • Different engine pressure • Pressure for individual lines (hand or master)

22. Relay • After water supply is established • Set governor or relief valve • Shut down of relay • Reverse order • Attack engine first • Intermediate next • Supply engine last

23. Dump and Relief Valves • Dump valve(s) operating • Check incoming pressure • Do not cap • If capped, loss of pump protection • Relief valve(s) operating • Check incoming pressure • May need adjusting

26. Reverse Lay • Advantages • Crew left at fire scene • Additional manpower • 2 in / 2 out • Supply engine spots at hydrant • Hydrant supply not interrupted

27. Ladder Pipe Operations • Newer apparatus have flow meters • E-One trucks • Needs approximately 200 psi at base of truck • LTI uses PDP (predetermined pressure) • FY 2000 platform and ladders • Will be setup to deliver 1500 gpm • Will have siamese for dual 4” supply laid to truck

28. Ladder Pipe Operations • Need engine spotted within 100’ of ladder truck • Engine may need dual lines laid into side intakes depending on length of line from supply engine • Supply engine at hydrant with 6” soft suction and possibly second 4” from same hydrant

29. Supplemental Pumping L93 E61 E70 E52

30. Standpipe/Sprinkler • High failure rate of piping between the FDC and the standpipe riser • There are a few sprinklers on a separate riser, with a separate FDC • Very tall buildings are divided into two or more vertical zones

31. Non-PRV Systems • Standpipe systems • Fog nozzles at 150 psi + 5 psi/floor to the fire floor • 2 1/2” straight streams at 65 psi + 5 psi/floor to the fire floor • Sprinklers at 150 psi + 5 psi/floor to the fire floor

32. PRV Systems • Engines should supply the systems only if the building’s fire pumps are not functioning adequately • The designed system pressure must be supplied (information in high rise survey) • Standpipe & sprinklers are calculated the same on PRV systems

33. Tandem Pumping • Is a short relay for high rise buildings (this will be a high pressure operation) • Becomes necessary after 40 stories (roughly 300 psi) • High pressure engine reverse lays from the FDC to an safe area (falling glass) • Supply engine will reverse lay to the hydrant

34. Large Volume Hand Lines

35. LDH to Ground Monitor

36. 3” to Ground Monitor

37. LDH to Ground Monitor

38. FYI • Centrifugal pump • Can double its capacity with positive pressure supply (hydrant system) • Staged engines • May need to share adapters • Used to lay second line (forward or reverse)

39. BE SAFE!

40. HH HOUSTONFIREDEPARTMENT PUMPOPERATORPROGRAM VAL JAHNKE TRAINING FACILITY