Chapter 9 11 Flashcards
(28 cards)
Fire on 31st Flr of 50 story bldg. HL stretched from 30th fl. Correct pressure A. 200 psi B. 250 psi C. 300 psi D. 350 psi
C Fire Floor for pressure (NOT hook up floor)
Flrs 31-40 300 psi
Bldgs constructed under 2008 bldg code having standpipe riser over _' shall have separate "Low Zone" and "High Zone" Siamese connections. A. 350 B. 500 C. 600 D. 750
C over 600’ These separate risers are NOT interconnected, so supplying Hi Zone will NOT charge Low Zone and vice versa
Hi Pressure Pumping Incorrect
A. All Eng, including Conventional are capable of providing pressures >250 psi
B. Unless emergency conditions and ordered by IC, conventional Eng should NOT exceed 250 psi
C. Hi Pr Pumping req’d for fires located on or above 21st fl
D. BC should be designated Hi Pr Pumping Group Supervisor to control ops. May be Co Off pending BC arrival
C 31st fl and higher
Pressures exceeding _ psi will require 3rd stage Eng, however 3rd stage preferred over _ psi
exceeding 600 psi req’d; over 500 psi recommended
10 story bldg under construction supplied via air pressurized standpipe system. Manual release valve cap removed and hissing heard. ECC cannot remove Siamese caps until air expelled. How many minutes for air to release
A. 1 B. 2 C. 3 D. None of the listed
C
Air Pressurized Standpipe Correct (3)
A. Req’d at all bldgs under construction 75’/greater
B. Siamese caps not removed until air pressure released from system
C. Air compressor must be shut down prior to supplying water
D. Breakaway caps req’d
E. Cont FF shall remove cap but delay opening outlet control valve until notified air has been removed
F. If air escaping under pr from Siamese cap while loosening, and no sign is present, stop cap removal and immed notify IC system pressurized
A B F
C. It is NOT necessary to deactivate the air compressor as it will shut off when the standpipe is supplied with water
D Screw caps
E Cont FF remove cap, open standpipe outlet control valve, and wait for water to reach this point. This will expedite air removal from system. Once water present at outlet, close it, and make connections. Standpipe now functions as standard manual wet standpipe
T/F When 3rd Stage Pumping is implemented, the IC shall ensure an additional 3rd Stage Eng is assigned to the incident. Only an IC of the rank of BC or higher may order use of 3rd stage.
True
Units arriving at the scene of a fire in a 1 story TP w/CIDS indicating bldg has a non-automatic sprinkler system would expect to find a Siamese connection painted what color?
A. Yellow B. Silver C. Aluminum D. Green
C
BC should be designated as the High Pressure Pumping _ A. Sector Supervisor B. Group Supervisor C. Area Manager D. Branch Director
B Group Supervisor
Regarding 3rd stage incorrect
A. If 3rd stage pumping is implemented IC shall ensure an additional 3rd stage Eng is assigned to incident
B. ECC’s intending to pump using 3rd stage must notify and get approval from IC which must be BC or higher
C. Pressure > 600 psi require 3rd Stage Pumper
D. 3rd stage pumper with its 3rd stage engaged can pump higher volumes at pressures over 400 psi than a two stage pumper
D Over 500 psi
Incorrect for Stages of Modern Fire Development
A. Rollover describes when fire spreads across ceiling of fire compartment, occurs in Growth Stage
B. Rollover occurs- FFs who are not operating under charged HL shall immediately leave and isolate fire area, unless there is a known life hazard
C. Fire progressed past growth stage to fully developed stage, potential for flashover exists
D. Fully developed stage usually occurs after flashover
E. Backdraft may occur in decay stage
B
Nozzle pressure, friction loss of 3 lengths of 2 1/2” HL, head loss, system friction loss and friction loss of 2 lengths of hose supplying FD connections have been used to provide recommended pump discharge pressure for standpipe ops. What is recommended Eng discharge of fire on 72nd fl of Hi-Rise bldg
A. 450 psi B. 500 psi C. 550 psi D. 250 psi
B 500 PSI
New HRMD >75 stories and >750’ w/separate standpipe risers and siameses for both standpipes labelled “Low Zone” and “High Zone.” 2008 Bldg code correct
A. When a standpipe riser is over 500’, separate “Low Zone” and “High Zone” risers and siameses are req’d
B. Separate risers for “Low Zone” and “High Zone” are interconnected only so that “Low Zone” can augment “high zone” if necessary, but not vice versa
C. Siamese connections shall be ID w/signs stating “Low Zone” or “High Zone” and indicate flrs they serve
D. “High Zone” is also known as “Express Lane” since it bypasses lower flrs
C
A Bldgs constructed under 2008 bldg code having a standpipe riser over 600’ in height shall have separate “Low Zone” and “High Zone” Siamese connections
B These separate risers are not interconnected, so
supplying the High Zone riser will not charge the Low Zone riser and vice versa.
D High Zone riser is also known as “Express Piping” since it bypasses lower floors
High Pr Eng and 3rd Stage Eng correct (3)
A. Hi Pr Eng utilizing specialized high pr equipment can pump over 250 psi and up to 600 psi
B. 3rd stage of 3rd stage Eng can supply max of 500 GPM up to 700 PSI
C. Hi Pr Eng and 3rd Stage Eng both have 2 high pressure outlets
D. IC shall be notified whenever high pressure pumping (over 250 psi) is necessary
E. Conventional Eng pump should not operate in pressures over 250 psi unless emergency conditions exist or ordered by IC
A B D
C High-pressure outlets: One HP outlet on HP Engines, Two HP outlets on 3rd Stage Engines
E emergency conditions exist AND they are ordered to do so by the IC
3rd Stage Pumping correct (5)
A. Hi Pr hose and fittings (white and heavier) and tether straps must be used. Supply lines should be connected to Hi Pr outlets
B. No more than 3 connected hose lengths of Hi Pr supply hose should be stretched to FD connection
C. Prior to initiating Hi Pr pumping, Safety Zone of at least 50’ in all directions est on each side of eng and Hi Pr supply hose. If 2 connected lengths in use, zone must be expanded 100’
D. Each Eng operating at Hi Pr must be controlled by an ECC and assisted by another ECC from a non-operating pumping engine
E. ECCs of non-pumping eng shall assist in keeping persons out of safety zone
F. Supply lines must be secured by tether strap to both the Eng rig and FD connection. If more than 1 length req’d, each length must be tethered and secured to each other by gated hook
G. BC shall be designated Hi Pr Pumping Group Supervisor, and must be designated prior to implementing Hi Pr Pumping
H. Preset pr on rig w/Pro Pressure Governor should not be used
A D E F H
B No more than 2 lengths
C 2 connected lengths, zone may need to be expanded
G The operation may be implemented pending their arrival
BC should know
A. Standpipe should be supplied by two engines. Two Hi Pr supply lines should not be connected to a single bldg siamese connection, unless absolutely necessary
B. Only a BC or higher can order use of 3rd stage
C. 3rd stage Eng w/3rd stage engaged is preferred for pressures over 450 psi
D. Pressures exceeding 550 psi require 3rd stage
B
A Do not connect two high-pressure supply lines to a single building siamese connection. When only one bldg siamese connection is available, stretch the 2nd supply line to the 1st fl outlet
C Over 500 preferred
D Over 600 psi requires 3rd stage
Air pressurized standpipes req’d in bldgs under construction greater than 75’ or in a bldg undergoing demo w/existing standpipe incorrect
A. Audible alarm sounds, only at site, if pr in system rises above 25 psi; or if pr drops below predetermined supervisory pressure due to an opening in system
B. When alarm sounds, all work on site must cease immediately. Concrete pouring ops in progress shall be permitted until an orderly termination can take place
C. FD to use air pressurized system at a fire operation, air pressure must be released from system prior to uncapping siamese and supplying it w/water
D. 2 1/2” manual air release/drain valve is found immediately adj to siamese connection. Remove cap to manual air release/drain valve and open valve fully to release the air
E. Number of air release valves req’d must ensure air pr is released in no more than 4 minutes. FD must thus open all air release valves if there are more than one
E 3 minutes
1st alarm units at a construction site where fire is on 20th fl w/air pressurized system incorrect
A. Screw in type siamese caps are req’d to provide an air-tight seal
B. Control FF, after reaching the fl where the HL connection will be made, should remove the outlet cap, open outlet control valve, and wait for water
C. Air compressor should be deactivated
D. If an Eng attempting to augment system and they find water spraying out from siamese caps under pressure, they should stop cap removal and supply another siamese or 1st flr outlet, or drain valve
C It is not necessary to deactivate the air compressor as it will shut off when the standpipe is supplied with water.
Chief orders LCS. A large caliber stream is any fire stream with a flow of _ gallons per minute or more A: 250 B: 251 C: 300 D: 301
Engine Company Operations Chapter 11
C. 300 gpm or more
Flows up to 1200 gpm are possible through the 2 inch tip when supplying the Akron ladder pipe nozzle with two 3 1/2 inch lines
11.1 CR (Dunne states over 300 GPM slight conflict)
Fire on 91st fl. 3rd stage Eng correct
A. Req’d for pumping ops and 600 psi is recommended discharge pressure
B. Preferred choice for pumping ops and 600 psi is recommended discharge pressure
C. Req’d for pumping ops and 550 psi is recommended discharge pressure
D. Preferred choice for pumping ops and 550 psi is recommended discharge pressure
B
Air Pressurized Standpipes incorrect
A: Once the air is expelled from the system, the manual air release can be supplied in the same manner as you would supply the first floor outlet
B: Buildings are required to have the number of release valved so that are pressure shall be expelled in no more than 3 minutes.
C: Breakaway caps are an indication that the system is an air pressurized system.
D: Air pressurized systems are required to be marked by a red light and a sign indicating that the system is pressurized.
C - Screw-in type Siamese caps are required in order to provide the air tight seal necessary for an air pressurized standpipe system. 2.7.
Air Pressurized Standpipe systems: Which statement below is correct regarding these systems?
A: Air Pressurized Systems are req’d in bldgs under construction reaching a height greater than 75’ or bldgs undergoing demolition with an existing standpipe.
B: When the pressure in the system drops below a predetermined pressure or rises above 25psi, an audible alarm will sound and a signal is sent to the alarm company.
C: When an alarm sounds, all work at the site must cease.
D: Any portion of the standpipe compromised below a closed section valve will not cause activation of the alarm.
A ENGINE OPERATIONS CHAPTER 9 ADD 2
B - Incorrect – At the site only 1.2
C - Incorrect – Concrete pouring in progress will be permitted until an orderly termination of such operation can take place 1.3
D - Incorrect – Above a closed section valve. 1.3 note
Hi/Low Standpipe Risers: Which is the only CORRECT description of the code for these buildings?
A: Under the 2008 building code, a building having a standpipe riser over 600’ in height shall have separate Low and High Zone Siamese connections.
B: Under the 2008 building code, a building reaching 600’ in height shall have separate Low and High Zone Siamese connections.
C: Under the 2014 building code, a building having a standpipe riser 600’ or higher shall have separate Low and High Zone Siamese connections.
D: Under the 2014 building code, a building over 600’ in height shall have separate Low and High Zone Siamese connections.
A is Correct - Under the 2008 building code, a building having a standpipe riser over 600’ in height shall have separate Low and High Zone Siamese connections.
May be a tight question, but only to point out the trap about the height of the standpipe riser not the building determining whether high or low zone risers are required… *Engine Operations Chapter 9 – 9.3.13
Color of smoke varies according to the materials burning and the make-up of the flammable gases that are being produced. Which of the following colors is not listed as a warning sign of a potential backdraft? A: Dense black B: Dirty yellow C: Yellow brown D: Gray yellow
***We have had a few high profile backdrafts in the past year
Engine Company Operations Chapter 4
B. Dirty brown 4.6.4 D third bullet
DB DB BY GY Dense Black, Dirty Brown, Brown Yellow, Gray Yellow
