Ch 4 Positioning Apparatus Flashcards
Should position apparatus in a safe position that includes an ____ _____
exit route
Positioning Pumpers
-Primary function is to provide water
-Company officer and driver will determine the best placement for apparatus
-Pre-incident planning- Prepare or manage incident at site before it occurs
-Size up- evaluation of the scene
- Incident Commander- Person in charge of scene
-Wind direction- Position upwind
-Terrain- Park on hard surface
-Pre-Incident Planning- Location for positioning to support fire department connections
Falling Debris- Personnel operating in 200 feet of high-rise may need to protect themselves
Positioning Pumpers for Fire Attack
-Pull past building to view three sides (Incident where no fire is present)
-Consider best access point for personnel and equipment
-Remain with apparatus in event of water supply
-include exit route should a withdrawal be necessary
-Method of attack- Depending on attack determines position of apparatus (offensive/defensive/exposure)
-Hose line deployment- Position pumper for deployment of hose lines for fire attack
Positioning Pumpers for Rescue Situations
- Life safety is first tactical priority
- position to for most efficient deployment of ground ladders
Positioning for Exposures
- position so that fire streams can be deployed to protect potential threatened exposures
Positioning Pumpers for Water Supply
- est. water supply is the primary concern of a driver
- if 1st arrival, consider laying own supply line
- roadway- When laying supply hose lay to side of street when possible (Impossible to move when charged)
Positioning for Roadways
- Lanes of road personnel operating and additional lane for safety zone
- When laying supply hose lay to side of street when possible (Impossible to move when charged)
Positioning for Structural Collapse
- Position at corners, maintain collapse zone one and a half times the height
-Bulging walls -Traveling exterior cracks
-Falling bricks
Positioning Ariel Apparatus
-The aerial device with fixed ladder or boom is no use if positioned beyond its maximum reach
-Building less then 5 floors pumper is placed inside and aerial is placed outside
-Place pumper as close to aerial as possible when providing water
Fire Department Connections
-Pumper should position as close as possible to the water source
-Fire Department Connection (FDC)- Can connect to sprinkler or standpipe connection to boost water pressure and flow in the system
-fire hydrant is usually located close to FDC
-Pumpers may need to position at a distant water source
Drafting Operations
- Acquiring water from a static source and transferring into pump that is above atmospheric pressure
Static water supply- Supply of water at rest that does not provide a pressure head
Dry Hydrant-Consist of an intake hose connection on the shore and a length of pipe extended into water with a strainer
Hydrant Operations
-place gate valve before connecting LDH so additional hose can be added w/o having to shut down hydrant
-Large diameter hose connection- Preferred type of hose for hydrant connection (100ft lengths)
Side intake connections- Avoids blocking the street with apparatus connection made on side
-Put counterclockwise twist in hose to help with kinks
Dual Pumping Operations
-One strong hydrant is used to supply two pumpers
-Pumpers are in close proximity of each other as both are being used as attack pumpers
Tandem Pumping Operations
-Form of relay pumping
-When engine takes water from supply source and pumps to another truck
-Increase pressure higher than a single engine is capable
-Located up to 300 feet apart
-Pumpers positioned close together rather than evenly spaced in supply hose layout
-Used in supplying high rise sprinkler or standpipe system
-Relay pumping is generally used to increase volume to the scene, where tandem is used to increase pressure
- Will be capable of pumping at pressures higher than hose and adapters can withstand:
- NFPA 1692, Standard for the inspection, care, and use of fire house. couplings, nozzles, and the service testing of fire hose
- contains test pressures for various types of hose
Positioning Wildland Fire
-Changing conditions may require multiple repositions
-Second to life safety is the protection of structures
-Park off roadway facing direction of exit path with front wheels straight
-Clear away nearby brush that may serve as fuel for fire
-Position on leeward side of structure
-Keep doors and windows closed
-AC on recirculate to avoid drawing in smoke
-Keep hose lines short to facilitate movement
-Keep away from powerlines trees LPG tanks
-Spotter remain in view of driver/operator
Anchor point- Natural or man-made barrier that prevents fire spread and crew being flanked
-Where fire attack should begin
Mop up- To patrol fire line to ensure that extinguishment is complete
-should not attempt to “Ford”, unless truck is specifically designed to drive through body of water
