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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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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

HH

HOUSTONFIREDEPARTMENT

PUMPOPERATORPROGRAM

VAL JAHNKE TRAINING FACILITY


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

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


Supplemental pumping

Supplemental Pumping

L93

E61

E70

E52


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


Large volume hand lines

Large Volume Hand Lines


Ldh to ground monitor

LDH to Ground Monitor


3 to ground monitor

3” to Ground Monitor


Ldh to ground monitor1

LDH to Ground Monitor


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

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)


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

BE SAFE!


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

HH

HOUSTONFIREDEPARTMENT

PUMPOPERATORPROGRAM

VAL JAHNKE TRAINING FACILITY


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