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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

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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 - PowerPoint PPT Presentation


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HH. 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. Developing Effective Water Supply. Operating Guideline. First Arriving Engine. May start developing water supply Consider fire load Consider fire conditions Next company arrival time

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Presentation Transcript
slide1
HH

HOUSTONFIREDEPARTMENT

PUMPOPERATORPROGRAM

VAL JAHNKE TRAINING FACILITY

first arriving engine
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)
supply engine s
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
supply engine s1
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)
relay
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)
relay1
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
dump and relief valves
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
reverse lay
Reverse Lay
  • Advantages
    • Crew left at fire scene
    • Additional manpower
    • 2 in / 2 out
    • Supply engine spots at hydrant
    • Hydrant supply not interrupted
ladder pipe operations
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
ladder pipe operations1
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
standpipe sprinkler
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
non prv systems
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
prv systems
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
tandem pumping
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
slide38
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)
slide40
HH

HOUSTONFIREDEPARTMENT

PUMPOPERATORPROGRAM

VAL JAHNKE TRAINING FACILITY

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