Flashcards in Private Dwellings Ch. 3 Engine Op's Deck (19):
Due to the combustible nature of both interior and exterior building materials, fire can spread rapidly. The unprotected, open interior stairwell to the upper floors acts as a natural flue, or flow path, for fire spread. Small rooms and narrow stairs are commonly found in these dwellings. Due to the need for speed and mobility, a 1¾" hoseline shall always be use.
True or False
Due to the need for speed and mobility, a 1¾" hoseline is recommended.
The engine company officer should consider using booster tank water when conditions dictate. Using booster tank water while hooking up to a hydrant may allow for a quick application of a limited supply of water. What must be done when the pumper is operating with hydrant water?
The ECC must inform the officer when the pumper is operating on booster tank water and then again when using hydrant water.
At a Private Dwelling where should the hoseline flaked out?
Sufficient hoseline must be stretched to cover the anticipated fire area. Members of the first two engines shall spread out on the hoseline near the entrance selected for attack to provide for efficient advancement. The hoseline should be flaked out, charged, and bled before entering the building. Private dwellings do not provide the space needed to flake out the hoseline inside the fire building.
The primary consideration in the placement of the first hoseline for access to a fire on the first floor or floors above in private dwelling when an interior attack is ordered is?
The main entrance door to the building. Generally, this location provides the quickest access to the fire area. It is also a strategic location that enables a charged hoseline the ability to contain fire extension via the open interior stairs and provides a level of protection to members as well as victims trapped or unconscious on the floor(s) above.
The primary consideration in the placement of the first hoseline for access to a fire in the cellar when an interior attack is ordered is via?
The entrance door that provides the quickest access to the fire area. This access may be through either the main entrance or a secondary entrance door. The rapid knockdown and extinguishment of the main body of fire provides the greatest protection for both civilians and members. During the initial size-up at apparent first floor and/or second floor fires, members should ensure they check to determine that the fire did not start on a lower floor or in the cellar, before committing the first hoseline.
Cellar fires in dwellings with balloon construction may extend to the attic via hidden voids. Units operating above the cellar must stretch enough hoseline to reach where?
To reach the upper floors. Intermediate floors must be checked for fire before a line is committed to the top floor.
The status of the interior cellar door (open, closed, burned through, unable to locate) is a critical factor. If conditions permit, what should be determined and communicated to the IC?
If conditions permit, the status and door construction should be determined and communicated to the Incident Commander (IC). Door construction can be a critical factor in preventing or slowing fire extension (steel, solid wood, luan panel, etc.).
What does heat waves emanating across the ceiling, while using the TIC, or smoke showing force and speed under pressure are indications of what at a Private Dwelling Fire?
When entering the first floor main entrance above a cellar fire, a thermal imaging camera showing heat waves emanating across the first floor ceiling indicates the interior cellar door is open. Also, smoke showing significant force and speed under pressure will indicate that the interior cellar door is open. This interior cellar entrance door should be immediately closed if possible.
Who can consider operating an exterior hoseline into a cellar window?
The IC (Chief or Company Officer) should consider ordering an exterior hoseline operated into a cellar window to allow for a quick knockdown when there will be a delay in applying water from the interior or whenever fire conditions dictate. Some examples
are as follows:
-Unable to quickly access or locate a secondary cellar entrance and unable to advance down the interior cellar stair.
-Unable to locate any cellar entrance.
-At a serious or advanced cellar fire.
-At a cellar fire involving lightweight construction.
Operating a hoseline into an exterior window should only be attempted when no members are operating in the cellar. It must be carefully coordinated with and communicated to all units operating on scene. The primary consideration for members operating on the first floor above a cellar fire is to close the interior cellar door at the top of the stairs. The following options should be considered for the safety of the members remaining on the first floor, based on conditions
-Operate under the protection of a charged hoseline on the floor(s) above.
-Secure an area of refuge, ensuring a ready means of egress.
-Exiting the building.
When can an exterior hoseline be immediately be placed into operation thru an exterior window prior to taking these precautions?
In an emergency such as members trapped by fire in the cellar or endangered by fire because a collapse has occurred, the IC should order the immediate operation of a hoseline into a cellar window. It is a good practice at PD fires, especially serious cellar fires, to have a precautionary charged hoseline in position near the front of the building for these contingencies.
In some situations, various factors including the following would preclude the descent of the first hoseline down the interior cellar stairs. What are they?
-High heat conditions at the top of the stairs
-Questionable stability of the stairway
-Initial size-up indicating a serious fire condition
In the cases above, hoseline advancement via a secondary entrance or water applied through a cellar window will be available options.
What is the paramount concern in making the decision to advance down the interior cellar stairs?
The safety of members
In rare instances, there may be a situation where the first hoseline was advanced through the main entrance, and units are unable to locate an interior cellar entrance, and there is no other hoseline available on scene to attempt entry via a secondary entrance. If there is a delay in gaining access or applying water to the cellar through the interior, the first hoseline that was stretched through the main entrance on the first floor may be repositioned to a secondary entrance.
Who can order the repositioning of the 1st hoseline to a secondary entrance?
The decision to reposition the first hoseline to a secondary entrance can only be made by an Acting Chief Officer/Chief Officer.
When repositioning the hoseline from the 1st floor to a secondary entrance where shall the Ladder members operating on the first floor go?
Ladder company members operating on the first floor must be withdrawn before the first hoseline is repositioned from that floor.The forcible entry team will then operate with the engine company and facilitate the advance of the hoseline via a secondary entrance.
Do Members operating on the upper floors need to be withdrawn from the bldg. when the 1st hoseline is being repositioned?
Members operating on the upper floors may also need to be withdrawn to a SAFE AREA if no portable ladders are positioned and readily available.
***It doesn't say out of the bldg.***
In a fully involved Bldg. units shall maintain the front of fire building accessible for tower ladder placement. When the first arriving engine company backstretches to the hydrant, they should drop what two lines in front of the bldg.?
5.1 & 5.2
When the first arriving engine company backstretches to the hydrant, they should drop
two handlines in front of the building.
What are the 4 times we shall consider stretching a 2 1/2" hoseline at a Private Dwelling Fire?
5.3 & Note, 6.4
-At a Fully Involved Bldg. consider stretching a 2½ inch hoseline for a faster knock down, greater reach of stream, increased volume of water and increased exposure protection.
- A 2½ inch hoseline shall also be considered when encountering a wind impacted fire or:
-A heavily involved first floor fire in a larger style Private Dwelling (Queen Anne ).
- Consider stretching a 2½” hoseline if increased volume or reach of the stream is needed when protecting exposures.
Units operating a hoseline to extinguish fire on the exterior of a building should sweep the stream across the face of the building, starting at what part of the Bldg.?
Starting at the top, so the water cascades down the exterior.