Model T-55BWater Tower

» Firefighter will describe 5 uses of aerial apparatus and briefly describe tactics for each.

» Firefighter will position and stabilize apparatus on simulated fire ground.

» Firefighter will erect, rotate, extend, and position boom to a target.

» Firefighter will recite load limits given a boom angle and condition.

» Firefighter will describe emergency operation procedures.

» Rescue» Ventilation» Elevated master stream» Fire Suppression

(access to upper levels)» Scene Lighting

» Overhead obstructions» Ground obstructions» Slope» Capacity and reach limits» Specific notes for:

˃ Rescue Access to upper levels˃ Ventilation Fire Suppression

» With engine running, set parking brake» Engage the power take off (PTO)» Chock front wheel

» Use a spotter

» Look for overhead hazards

» Engage master switch

» Turn on Panel Lights» Don’t use “Fast Idle”

unless speed isessential

» Nothing workswithout holding the“Dead Man Control”

» Deploy Outrigger jack plates» Use wooden bearing pads when required

» Select “Jacks”» Set Outriggers individually:

» downhill first» uphill second

» SAFETY: Use a spotter when outriggers are deployed» Line up edge of pad with “pin”

» Extend outriggers until rear bumper raises 3” - 4” and weight is shifted from tires to the outriggers» Raise until selector will switch to Boom» Ensure truck is level

» Switch over to boom control» Walk around vehicle to verify stable condition

» Ensure Boom Functionsswitch is in correct position˃ In: Midship Control˃ Out: Rear Control

» Check overhead hazards» Elevate boom» Rotate to desired position» Extend to desired height

» Standard hand signals for controlling cranes operations

» Due to a part failure˃ Water cannot be pumped directly to the boom˃ Replacement piping has been installed to allow water to be pumped

into the boom˃ A PINCH POINT exists between the ladder base and this new piping

» Due to the PINCH POINT

˃ The boom cannot be raisedhigher than 50o

+ Note the white arrow

˃ If a spotter is usedthe boom can be raisedhigher to 60o

» 1000 GPM @ 100 psi at the nozzle, with ladder at 90o = reaction force of 500 lbs.

» Live loads, due to nozzle reaction & distribution of firefighters on the ladder are most greatly affected when the boom is fully extended and nearly horizontal

» The greater ˃ the horizontal distance from the nozzle to the centre of the truck ˃ the radius of the line of action of the nozzle stream to the boom pivot

» the greater the effect on ˃ boom stress ˃ truck tipping moment

-10 to +90 No load 1000 GPM any direction

45 to +75 300 lb tip 500 lb even

1000 GPM any direction

-10 to +45 500 lb tip 900 lb even

0 GPM

45 to +75 800 lb tip 1600 lb even

0 GPM

-10 to +75 tip supported

1600 lb even 0 GPM

» Erect and position boom for best advantage.» Bring nozzle position out of storage and into

desired position.

» Water delivered by truck pump through 4” hose to 4” rear supply˃ Boom cannot be rotated once line is charged

» Nozzle can be operated from:˃ Rear˃ Midship˃ Umbilical˃ Ladder Tip

» Control pump throttleto get 100 psi @ nozzle˃ 1500 gallons per minute at 100 psi˃ Friction loss through 4” hose is negligible˃ Elevation loss is 0.5 psi per foot˃ Friction loss through “Master Stream” is 25 psi

» Ladder communicationson TAC 3

» Pump operationfrom step due to electrical hazard

» Ladder can be raised/lowered & rotated with afirefighter on it

» Ladder CANNOT be extended/retracted with a firefighter on it

» Generator˃ Right Side, rear compartment˃ Four Halogen Light MAXIMUM

» Boom Lights˃ Two 110 volt lights at tip of boom

» Intercom˃ Rear Panel˃ Midship˃ Tip of Ladder

» Air System˃ Take mask from compartment at rear of Ladder˃ Turn on the Air Bottle at the base of the ladder˃ Don the mask at the tip of the ladder

+ XL30 mask+ Screws into regulator+ Switch regulator

from Don to Use

» Fall Restraint˃ Required when working

on Ladder˃ Belts located in rear

compartment

» Shutdown˃ Nest the nozzle and drain the tower˃ Rotate Ladder using pointer on turntable˃ Retract Ladder˃ Lower Ladder into cradle

+ XL30 mask+ Screws into regulator+ Switch regulator

from Don to Use

Overrides» Keys are in glove box

˃ in cab

» Jacks Override:˃ Raise boom without jacks being

extended ˃ Used when tilting cab forward for

maintenance

» Boom Nested Override:˃ Move jacks when boom is not

nested

Turntable» It is possible to

rotate turntablemanually˃ Housing hole is not centered˃ Need a wrench

Power Pack» To be used in case of

failure of engine, transmission, PTO, or main hydraulic pump.

» Small electric hydraulic pump˃ Uses lots of power

» Controlled by “Aux. Pump” toggle on rear panel

Hydraulic Supply Failure» Complete hydraulic

failure.» Disconnect and

reverse hydraulic lines.

» By service personnel only.

» Firefighter will describe 5 uses of aerial apparatus and briefly describe tactics for each.

» Firefighter will position and stabilize apparatus on simulated fire ground.

» Firefighter will erect, rotate, extend, and position boom to a target.

» Firefighter will recite load limits given a boom angle and condition.

» Firefighter will describe emergency operation procedures.