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 Author: NinjaTarzan ID: 140833 Filename: PADO Updated: 2014-09-20 16:16:41 Tags: Fire Engineering Folders: Description: Pumper/Apparatus Driver Operator Exam Preparation for Promotional Show Answers:

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1. Atmospheric pressure at sea level
• 14.7 psi
• or
• 101 kPa
2. Altitude pressure drop
0.5 psi (3.5 kPa) per 1000 feet
3. 1 cubic foot of water exerts:
0.434 psi
4. 0.1m x 0.1m x 0.1m of water is:
• 1 liter of volume,
• 1 kilogram of mass,
• 1 kPa of pressure
5. 1 foot square column of water needs to be this high to exert 1 psi:
2.304 feet
6. The weight of 1 cubic foot of water
62.5 pounds
7. Water distribution lines
• Primary feeders - 16"
• Secondary feeders - 12"
• Distributors - 8"
• Hydrant supplies: Residential - 6"
• Commercial - 8"
8. Class A foam percentages
0.2-1.0%

• 0.2-0.5 - fire attack; CAFS
• 0.5-1.0 - exposure protection
• 0.3-0.7 - air aspirating foam nozzles
9. Three factors that influence centrifugal pumps
• Amount of water being discharged
• Speed of the impeller
• Pressure of water entering the pump
10. ARAFFF
Alcohol resistant aqueous film forming foam
11. Master Stream Flows and Friction Losses (per 100' of 21/2")
• 11/4" - 400 gpm, 36 psi
• 11/2" - 600 gpm, 78 psi
• 13/4" - 800 gpm, 136 psi
• 17/8" - 900 gpm, 171 psi
• 2" - 1,000 gpm, 210 psi
12. 11/4" Master stream
• 80 psi
• 400 gpm
• FL = 36 psi per 100' of 21/2" line
13. 11/2" Master Stream
• 80 psi
• 600 gpm
• FL = 78 psi per 100' of 21/2" line
14. 13/4" Master stream
• 80 psi
• 800 gpm
• FL = 136 psi per 100' of 21/2" line
15. 17/8" Master stream
• 80 psi
• 900 gpm
• FL = 171 psi per 100' of 21/2" line
16. 2" Master stream
• 80 psi
• 1,000 gpm
• FL = 210 psi per 100' of 21/2" line
17. Safest water flow rule
• 75/80/80
• 75o elevation
• 80% extension
• 80 psi nozzle pressure on smooth bore
18. Water weight on structure
250 gpm = 1 ton per minute
19. NPDP
• Net pump discharge pressure
• work pump has to do on water

Hydrant at 100 psi with PDP of 150 psi = NPDP of 50 psi
20. Idling Diesels
Burn 1/2 gallon diesel per hour

Cause carbon build-up on injectors, valves, pistons, and valve seats; damage turbo shaft
21. SAE
Society of Automotive Engineers

SAE number indicates viscosity
22. Aerial apparatus categories
• Elevating platforms
• Water towers
23. IFSTA Formula for Friction Loss
FL = CQ2L

• C = 13/4" = 15.5
• 21/2" = 2
• 5" = 0.08
24. Dual Pumping
One hydrant hooked to pumper, excess hydrant pressure flows through 1st pumper to 2nd pumper
25. Handline Flows and Friction Losses (per 100' of 13/4" unless otherwise noted)
• TFT - 170 gpm, 35 psi
• Control Nozzle on 21/2" - 250 gpm, 15 psi
• 3/4" - 120 gpm, 20 psi
• 7/8" - 160 gpm, 30 psi
• 15/16" - 180 gpm, 40 psi
• 1" - 200 gpm, 50 psi
• 11/8" (21/2" hose) - 250 gpm, 15 psi
• 11/4" (21/2" hose) - 325 gpm, 25 psi
26. 1" Handline
• 50 psi
• 200 gpm
• FL = 50 psi per 100' of 1 3/4" hose
27. 11/8" Handline
• 50 psi
• 250 gpm
• FL = 15 psi per 100' of 21/2" hose
28. 11/4" Handline
• 50 psi
• 325 gpm
• FL = 25 psi per 100' of 21/2" hose
29. Apparatus Tests
• Accelerate to 35 mph in 25 seconds
• Minimum top speed 50 mph
• Stop from 20 mph in 35'
30. Hydrostatic Test
Pumps 250 psi for 3 min
31. Water Tower Flows
1,000 to 5,000 gpm
32. Aerial Roof
6' above roof line
33. Power Lines
Stay away minimum of 10'
34. Collapse Zone
Height of Building x 1.5
35. 13/4" Control Nozzle
• 100 psi
• 170 gpm
• FL = 35 psi per 100' of 13/4" hose
36. 21/2" Control Nozzle
• 100 psi
• 250 gpm
• FL = 15 psi per 100' of 21/2" hose
37. NFPA 1451
Standard for Fire Service Vehicle Operations Training Program
38. NFPA 1500
Standard on Fire Department Occupational Safety and Health Program
39. NFPA 1001
Standard for Firefighter Professional Qualifications
40. NFPA 1906
Standard for Wildland Fire Apparatus
41. NFPA 1582
Standard on Medical Requirements for Firefighters
42. NFPA 1914
Standard for Testing Fire Department Aerial Devices
43. NFPA 1901
Standard for Automotive Fire Apparatus. Requires minimum pump capacity of 750 gpm.
44. NFPA 1002
Standard for Professional ADO Qualifications (includes preventative maintenance and inspections)
45. Quint
• Apparatus equipped with:
• 1. Pump > 1,000 gpm
• 2. Tank > 300 gallons
• 3. Ground Ladders > 85'
• 4. Hose > 800' of 21/2" Supply + 400' of 13/4" Attack
• 5. Aerial Device
46. Aerial Hydraulics
3,500 psi positive displacement rotary vane or rotary gear
47. Valve Controls
• Manual
• Mechanical
• Electrical
• Hydraulic

or combination of these
48. PTO Activation Switches
• Pneumatic - 50 - 140 psi air
• Electric
• Hydraulic

or combination of these
49. Foam Expansion
• Low: 0 - 20:1
• Med: 20:1 - 200:1
• High: 200:1 - 1,000:1
50. Foam Tetrahedron
• Foam concentrate
• Water
• Air
• Mechanical agitation
51. Class A Foam Percentages
• 0.2 - 0.5% = fire attack/overhaul
• 0.5 - 1.0% = exposure protection
• 0.3 - 0.7% = any application with air aspirating nozzles
• 0.2 - 0.5% = CAFS
52. Foam Types
• Chemical
• Mechanical
53. Extrication Pump Hose Length
Not capable of supplying full power when hose exceeds 100'
54. Apparatus Collision Categories
• Improper Backing
• Reckless Driving (Public)
• Excessive Speed
• Lack of Driving Skill
• Poor Apparatus Design or Maintenance
55. Apparatus Control Factors
• Aim high in steering
• Get "big picture"
• Keep eyes moving
• Leave yourself an "out"
• Make sure others see or hear you
56. Auxilliary Braking Systems
• Front brake limiting
• Interaxle differential lock
• ABS Anti-lock Braking System
• ATC Automatic Traction Control
57. Offensive Aerial Positioning
Front of involved portion of structure
58. Counter Balance Valve
Prevents unintentional or undesireable operation
59. Selector Valve
3-way valve directs fluid to stabilizers or Aerial, but not both at the same time
70o to 80o when possible
61. Longitudinal Uneveness
6 - 14%

Aerial should not be extended or retracted over side of apparatus
62. Correction of Lateral Unevenness
Achieved on grades up to 5 - 6%
63. Water Weights
• 62.5 lbs per ft3
• 8.33 lbs per gallon
• Column of water 2.304' tall = 1 psi
• 1 ft3 of water = 0.434 psi, 7.5 gallons
64. Portable Generators
5,000 Watts
65. Vehicle Mounted Generators
12,000 Watts

Common on Aerials
66. Aerial Device Loads
• Perpendicular
67. Handline Flow Limit
350 gpm
68. Master Stream Flow
350 gpm or greater
69. Fire Stream Velocities
60-120 ft/sec at 25-100 psi
70. Master Stream Pressure
80 psi
71. Solid Stream Nozzle Reaction Formula
NR = 1.57 x d2 x NP
72. Fog Stream Nozzle Reaction Formula
NR = 0.0505 x Q x
73. Determining PDP
PDP = NP + TPL
74. NFPA 1931
Standard for manufacturer's design of Fire Department ground ladders
75. Minimum Rated Capacity of Mobile Foam Firefighting Apparatus
750 gpm
76. Turbidity
The amount of particulate matter suspended in water
77. Residual Pressure
An indication of how much more water is available in the system
78. NFPA 291
Recommended Practice for Fire Flow testing and marking of hydrants
79. Portable Pumps
Can deliver up to 500 gpm
80. Air Brake Check "COLA"
• C - Air Compressor cuts in no lower than 85 psi
• O - Air compressor cuts Out in high idle between 110-120 psi
• L - Low pressure warning kicks on, parking brake kicks in around 40 psi
• A - Air Leakage rate < 3 psi per min.
81. Flow Ratings
• 100% volume @ 150 psi
• 70% volume @ 200 psi
• 50% volume @ 250 psi
82. 13/4" Hose with Fog Nozzle Standard Flow
150 gpm
83. 13/4" Hose with 15/16" - 1" Nozzle Standard Flow
180 -200 gpm
84. 200' Rule for 13/4" Hose
The PDP is equal in to the flow in gallons per minute from the nozzle.
85. Drop 12 Method
• Subtract 12 from the first two digits of the flow. That will give friction loss for 100' of 21/2" hose.
• For flows above 350, drop 12 and then add back in the first digit of the flow; i.e., 350-> 35 - 12 = 23 + 3 = 26
86. 14.7 PSI
• Atmospheric Pressure at sea level
• 30" of mercury
• 33.9' of water
87. Nozzle Reaction
1.5 x D2 x NP
88. Velocity of Fire Stream in FPS
12.1 x
89. Standard Sources of Friction Loss
• 5 psi per floor/10' of elevation (do not count ground floor)
• 25 psi for Standpipe
• 25 psi for prepiped Aerial
• 10 psi for Wye/Siamese
90. Available Flow from Hydrants
• 10% drop = 3 more like volumes
• 15% drop = 2 more like volumes
• 25% drop = 1 more like volume
91. PCFD Apparatus Placement SOG
• Use "Key Positions," including:
• Aerial placement in relation to overhead obstructions
• Engine placement in relation to water supply
• Priorities: Safety, Incident Objectives, Incident Expansion.
• Level I Staging for 2 or more like vehicles
• Level II Staging for multiple alarms or mutual aid
92. PCFD Accident Involvement SOG
• Check for injuries
• Report to law enforcement and BC if injuries or outside property damage are present
• Report to BC if on emergency response and no injuries or outside property damage are present
• Remain on-scene if not on emergency response and injuries or outside property damage are present
93. NWCG Structural Engine Typing
• Type 1:
• 1000 gpm pump at 150 psi, 400+ gallon tank, 1200' of 21/2", 400' of 11/2", 48' of ladders, 500 gpm master stream, 4 Personnel

• Type 2:
• 250 gpm pump at 150 psi, 400+ gallon tank, 1000' of 21/2", 500' of 11/2", 48' of ladders,
• 3 Personnel
94. NWCG Wildland Engine Typing
• Type 3:
• 150 gpm @ 250 psi, 500+ gallons, 500' of 11/2", 500' of 1", 3 personnel

• Type 4:
• 50 gpm @ 100 psi, 750+ gallons, 300' of 11/2", 300' of 1", 2 personnel

• Type 5:
• 50 gpm @ 100 psi, 400-750 gallons, 300' of 11/2", 300' of 1", 2 personnel

• Type 6:
• 30 gpm @ 100 psi, 150-400 gallons, 300' of 11/2", 300' of 1", 2 personnel

• Type 7:
• 10 gpm @ 100 psi, 50-200 gallons, 200' of 1", 2 personnel
95. FEMA Engine Typing
(ESF 4)
• Type I:
• 1000 gpm, 400 gal., 1200' of 2.5", 400' of 1.5", 200' of 1", 4 personnel

• Type II:
• 500 gpm, 400 gal., 1000' of 2.5", 500' of 1.5", 300' of 1", 3 personnel

• Type III:
• 120 gpm, 500 gal., 1000' of 1.5", 800' of 1", 3 personnel

• Type IV:
• 70 gpm, 750 gal., 300' of 1.5", 300' of 1", 2 personnel

• Type V:
• 50 gpm, 500 gal., 300' of 1.5", 300' of 1", 2 personnel

• Type VI:
• 50 gpm, 200 gal., 300' of 1.5", 300' of 1", 2 personnel

• Type VII:
• 50 gpm, 125 gal., 200' of 1.5", 200' of 1", 2 personnel
96. NWCG Water Tender Typing
• Type 1:
• 5000 gal., 300 gpm, 30 min refill time

• Type 2:
• 2500 gal., 200 gpm, 20 min refill time

• Type 3:
• 1000 gal., 200 gpm, 15 min refill time
97. FEMA Water Tender Typing
(ESF 4)
• Type I:
• 2000 gal., 300 gpm

• Type II:
• 1000 gal., 120 gpm

• Type III:
• 1000 gal., 50 gpm

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