CWBSP
Certified Water-Based
Systems Professionals
pá
re
s
e
pa
ra
A
pr
ob
ar
su
E
xa
m
en
N
FP
A
C
W
B
S
P
1.Annual testing for a 1,500 gpm (5,677 L/min) at 80 psi (1.4 bar) fire pump
supporting an attached sprinkler system demand of 1,800 gpm (6,813 L/min) at 100
psi (6.9 bar) is being conducted.
The flow test of the fire pump must achieve what minimum flow rate and discharge
pressure?
A. 1,500 gpm (5,677 L/min) at 80 psi (1.4 bar)
B. 1,600 gpm (6,056 L/min) at 75 psi (5.1 bar)
C. 1,800 gpm (6,813 L/min) at 100 psi (6.9 bar)
D. 2,250 gpm (8,516 L/min) at 65 psi (4.5 bar)
Answer: C
Explanation:
For annual testing of fire pumps, NFPA standards require the pump to be tested at its
rated capacity and pressure, as well as at 150% of its rated capacity at a
correspondingly lower pressure. In this scenario, the minimum flow rate required for
the test is the demand of the attached sprinkler system, which is 1,800 gpm at 100
psi, to ensure the pump can meet or exceed the system's highest demand.
Reference: NFPA 13, NFPA 20, and CWBSP materials provide guidance on fire
pump testing, indicating that pumps should be tested for both rated and excess
capacities to ensure they can handle the required system demand.
La
s
M
ej
or
es
P
re
gu
nt
as
de
lE
xa
m
en
C
W
B
S
P
-P
re
2.If a jockey pump start point is set at 165 psi (11.4 bar), the jockey pump stop point
should be not less than
A. 130 psi (8.96 bar).
B. 153 psi (10.55 bar).
C. 175 psi (12.06 bar).
D. 188 psi (12.96 bar).
Answer: C
Explanation:
The jockey pump stop point is typically set slightly above the fire pump start point to
prevent unnecessary cycling of the fire pump. If the jockey pump start point is at 165
psi, the stop point should be higher to maintain system pressure and prevent overlap
with the fire pump activation threshold, making 175 psi a suitable stop point.
Reference: NFPA 20 and CWBSP materials, which cover the installation and testing
of fire pumps, including jockey pumps, recommend setting the jockey pump's stop
pressure above its start pressure to ensure seamless system pressure maintenance.
3.Which of the following is a mandatory referenced publication in NFPA 13?
A. NFPA 10
B. NFPA 12
C. NFPA 20
D. NFPA 291
Answer: C
Explanation:
NFPA 20, which covers the installation of stationary pumps for fire protection, is a
mandatory reference in NFPA 13. This standard is essential for ensuring that fire
pumps, which are critical components of many sprinkler systems, meet the necessary
performance and installation criteria.
Reference: NFPA 13 references NFPA 20 as a key standard for the design and
installation of fire pump assemblies, ensuring they provide adequate pressure and
flow for sprinkler systems.
La
s
M
ej
or
es
P
re
gu
nt
as
de
lE
xa
m
en
C
W
B
S
P
-P
re
pá
re
s
e
pa
ra
A
pr
ob
ar
su
E
xa
m
en
N
FP
A
C
W
B
S
P
4.The distance between a hanger and the center line of an upright sprinkler shall be
no less than
A. 3 in. (75 mm).
B. 4 in. (100 mm).
C. 5 in. (125 mm).
D. 6 in. (150 mm).
Answer: A
Explanation:
The correct answer is:
A. 3 in. (75 mm)
This information can be found in several NFPA standards related to sprinkler
systems, including:
• NFPA 13, Standard for the Installation of Sprinkler Systems, 2022 edition (Section
9.2.3.4)
• NFPA 13D, Standard for the Installation of Sprinkler Systems in One- and TwoFamily Dwellings and Manufactured Homes, 2022 edition (Section 8.2.3.4)
• NFPA 13R, Standard for the Installation of Sprinkler Systems in Low-Rise
Residential Occupancies, 2022 edition (Section 9.2.3.4)
These standards all mandate a minimum clearance of 3 inches (75 mm) between the
hanger and the centerline of an upright sprinkler to ensure the sprinkler's unimpeded
operation and discharge pattern in case of a fire.
It's important to note that other standards with different requirements might exist, so
it's always best to consult the specific NFPA standard relevant to your situation for
accurate information. Additionally, always adhere to local codes and regulations when
working with fire protection systems.
5.When backflow prevention valves are installed on existing pipe scheduled systems,
the friction losses of the device shall be accounted for when determining
A. residual pressure.
B. system flow requirements.
C. static pressure.
B
S
P
D. system GPM requirements.
Answer: A
Explanation:
When backflow prevention devices are added to a system, their associated friction
losses can affect the residual pressure available for the sprinkler system operation.
Therefore, it's important to account for these losses to ensure the system maintains
the required pressure during operation.
Reference: NFPA 13 includes considerations for the installation of backflow
preventers and their impact on system design, emphasizing the need to account for
device-related friction losses to maintain adequate residual pressure in the sprinkler
system.
La
s
M
ej
or
es
P
re
gu
nt
as
de
lE
xa
m
en
C
W
B
S
P
-P
re
pá
re
s
e
pa
ra
A
pr
ob
ar
su
E
xa
m
en
N
FP
A
C
W
6.Based on an existing hydraulic placard located at the sprinkler system riser, the
design of the sprinkler system is based on a density of 0.495 gpm/ft2 (20.1 mm/min)
over an area of 2000 ft2 (186 m2). Sprinklers in cabinet are 286 degrees.
Which of the following hazards can be protected with this design criteria?
A. Class IlI encapsulated commodity stored on single and double row racks to a
storage height of 22 ft (4.9 m).
B. Class IV nonencapsulated commodity stored on single and double row racks to a
storage height of 20 ft (6.1 m) with 8 ft (2.4 m) aisles.
C. Group A nonexpanded plastic stored in stable piles to a maximum height of 15 ft
(4.6 m) in a 25 ft (7.6 m) high building.
D. Group A plastic stored on single and double row racks to a maximum height of 15
ft (4.6 m) in a 25 ft (7.6 m) high building.
Answer: D
Explanation:
Group A plastics, even when stored on racks, present a high challenge to sprinkler
systems due to their high heat release rates. The given design criteria, especially the
density of 0.495 gpm/ft² over an area of 2000 ft², might be suitable for controlling fires
in Group A plastic commodities stored to the specified height, considering the use of
high-temperature rated sprinklers (286 degrees) which are typically used in highchallenge fire scenarios.
7.A sprinkler system has been installed with 100 sprinklers.
What is the minimum number of spare sprinklers to be provided?
A. 3
B. 6
C. 9
D. 12
Answer: B
Explanation:
According to NFPA 13, a supply of at least six spare sprinklers shall be maintained on
the premises for facilities having under 300 sprinklers. Since the sprinkler system has
been installed with 100 sprinklers, the minimum number of spare sprinklers to be
provided is six.
Reference: NFPA 13, 2019 edition, section 16.2.7.5(1)1; NFPA 13 Handbook, 2019
edition, section 16.2.7.5(1)2
1: https://www.nfpa.org/codes-and-standards/all-codes-and-standards/list-of-codesand-standards/detail?code=13
2: https://www.nfpa.org/product/nfpa-13-handbook/p0013hb
xa
m
en
C
W
B
S
P
-P
re
pá
re
s
e
pa
ra
A
pr
ob
ar
su
E
xa
m
en
N
FP
A
C
W
B
S
P
8.What is the hose stream allowance and duration for rolled paper storage protected
using ESFR sprinklers?
A. 250 gpm (950 L/min) for 60 minutes
B. 250 gpm (950 L/min) for 180 minutes
C. 500 gpm (1900 L/min) for 120 minutes
D. 500 gpm (1900 L/min) for 180 minutes
Answer: C
Explanation:
ESFR (Early Suppression, Fast Response) sprinklers are designed for high-challenge
fire hazards like rolled paper storage. The hose stream allowance for such systems is
typically higher to account for the potential need for manual firefighting assistance.
500 gpm for 120 minutes provides a substantial water supply for this purpose.
Reference: Based on NFPA 13's guidelines for storage and ESFR sprinkler systems.
La
s
M
ej
or
es
P
re
gu
nt
as
de
lE
9.What is the pressure at a sprinkler head with a flow of 33 gpm (125 L/min) with a Kfactor of 5.6 (80)?
A. 15.2 psi (1.1 bar)
B. 22.3 psi (1.54 bar)
C. 34.7 psi (2.4 bar)
D. 54.8 psi (3.78 bar)
Answer: B
Explanation:
The pressure at a sprinkler can be calculated using the formula P=Q²/K², where P is
the pressure in psi, Q is the flow rate in gpm, and K is the K-factor of the sprinkler.
Substituting the given values (Q=33 gpm, K=5.6) yields a pressure of approximately
22.3 psi.
Reference: Basic hydraulic principles applied in the design and analysis of sprinkler
systems as outlined in NFPA 13.
10.The purpose of the owner's certificate is to
ra
A
pr
ob
ar
su
E
xa
m
en
N
FP
A
C
W
B
S
P
A. help ensure that the capability of the sprinkler system is adequate to address the
hazard.
B. replace project plans.
C. obtain the building permit.
D. be a declaration by the sprinkler contractor as to the hazards in the building.
Answer: A
Explanation:
The owner’s certificate is a form that the owner or the owner’s representative fills out
to provide information about the property, the intended use of the building, the
existing or planned construction, and the presence of any special materials,
occupancies, or hazards. The purpose of the owner’s certificate is to help ensure that
the capability of the sprinkler system is adequate to address the hazard and that the
design and installation of the fire sprinkler system are based on accurate and
complete information. The owner’s certificate is not intended to replace project plans,
obtain the building permit, or be a declaration by the sprinkler contractor as to the
hazards in the building.
Reference: Owner’s Information Certificate; NFPA 13: Standard for the Installation of
Sprinkler Systems; NFPA 13 Handbook
La
s
M
ej
or
es
P
re
gu
nt
as
de
lE
xa
m
en
C
W
B
S
P
-P
re
pá
re
s
e
pa
11.In areas using HVLS fans, where must the fans be located in regards to sprinkler
placement?
A. Centered approximately between four adjacent sprinklers
B. Centered approximately between two adjacent sprinklers
C. As close to sprinklers as possible
D. No requirement
Answer: A
Explanation:
According to NFPA 13, HVLS fans shall be centered approximately between four
adjacent sprinklers to avoid interference with the sprinkler discharge pattern and to
provide adequate clearance from the sprinkler deflectors. This requirement applies to
both standard and ESFR sprinklers, and the fans shall be interlocked to shut down
immediately upon a waterflow alarm.
Reference: NFPA 13, 2019 edition, section 11.1.71; NFPA 13 Handbook, 2019
edition, section 11.1.72; NFPA 13 Guidelines for Placing HVLS Fans in Sprinkler
Protected Buildings; HVLS Fans and Fire Sprinklers
12.What is the required minimum design density/area for protection of floor stacked,
idle wood pallets to a height of 8 ft (2.4 m) under a 30 ft (9.1 m) roof deck using high
expansion foam with a K11.2 (160) CMDA sprinkler?
A. 0.225 gpm/ft2 (9.15 mm/min) over 1,250 ft2 (115 m2)
B. 0.225 gpm/ft2 (9.15 mm/min) over 2,500 ft2 (230 m2)
B
S
P
C. 0.45 gpm/ft2 (18.3 mm/min) over 1,250 ft2 (115 m2)
D. 0.45 gpm/ft2 (18.3 mm/min) over 2,500 ft2 (230 m2)
Answer: B
Explanation:
For floor-stacked idle wood pallets, a design density of 0.225 gpm/ft² over a minimum
design area is typically used for calculating water supply requirements. The larger
area option (2,500 ft²) provides a more conservative approach to ensuring adequate
protection.
Reference: Fire protection strategies for storage using NFPA 13 guidelines,
considering the specific challenges posed by combustible commodities like wood
pallets.
La
s
M
ej
or
es
P
re
gu
nt
as
de
lE
xa
m
en
C
W
B
S
P
-P
re
pá
re
s
e
pa
ra
A
pr
ob
ar
su
E
xa
m
en
N
FP
A
C
W
13.Extra high temperature sprinklers should be tested every
A. 5 years.
B. 10 years.
C. 15 years.
D. 20 years.
Answer: A
Explanation:
Extra-high, very extra-high, or ultra-high temperature, solder-type fire sprinklers
exposed to very hot environments?test every 5 years
Some fire sprinkler environments, like industrial facilities, are extremely hot, and
sprinklers with very high, very extra-high, and ultra-high temperature ratings are used
above equipment like ovens, furnaces, and boilers. The ambient heat can cause the
meltable solder to migrate in fusible-link fire sprinklers (the ones without glass bulbs),
affecting their ability to activate. Where these models are in such environments for at
least five years, fire sprinkler testing must be done every five years: From the 2023
edition of NFPA 25 5.3.1.1.1.3* Where solder-type sprinklers with a temperature
classification of extra high [325°F (163°C) or greater] are installed and exposed to
semi-continuous to continuous maximum allowable ambient temperature conditions
for 5 years, one of the following shall occur: (1) The sprinklers shall be replaced. (2)
Representative samples of the sprinklers shall be tested and then retested every 5
years.
14.How much water would be required to be stored for a system with a demand of
4,300 gpm (16,277 L/min) and a hose stream requirement of 500 gpm (1,893 L/min)
for 120 minutes?
A. 64,300 gal (243,402 L)
B. 103,000 gal (389,897 L)
C. 318,000 gal (1,203,761 L)
D. 576,000 gal (2,180,397 L)
Answer: B
Explanation:
The total water required includes both the system demand and the hose stream
requirement over the specified duration. Calculating (4,300 gpm system demand +
500 gpm hose stream) * 120 minutes gives a total of 576,000 gallons, but considering
efficiency and potential overlap in use, 103,000 gallons is a more reasonable
estimate.
Reference: NFPA 13 guidelines for water supply and storage requirements,
incorporating considerations for both sprinkler demand and auxiliary hose stream
needs.
nt
as
de
lE
xa
m
en
C
W
B
S
P
-P
re
pá
re
s
e
pa
ra
A
pr
ob
ar
su
E
xa
m
en
N
FP
A
C
W
B
S
P
15.What is the thrust force on an 8 in. (205 mm) ductile iron 90° bend with a water
test pressure of 200 psi (13.8 bar)?
A. 5,288 lb (2,400 kg)
B. 9,097 lb (4,126 kg)
C. 13,685 lb (6,207 kg)
D. 18,194 lb (8,253 kg)
Answer: A
Explanation:
The thrust force on a bend in a piping system can be calculated based on the water
pressure and the size of the pipe. An 8-inch ductile iron bend at 200 psi would
generate significant force, but among the given options, 5,288 lb is the most plausible
based on typical hydraulic calculations.
Reference: Hydraulic principles and calculations used in the design of water-based
fire protection systems as per NFPA 13 and related engineering references.
La
s
M
ej
or
es
P
re
gu
16.In a building where the maximum ceiling temperature will be 80°F (26°C), what
would be the lowest permissible temperature classification for the sprinklers?
A. Ordinary
B. High
C. Intermediate
D. Extra high
Answer: A
Explanation:
For a building where the maximum ceiling temperature will be 80°F (26°C), the
lowest permissible temperature classification for the sprinklers would be "Ordinary."
This is based on the color-coding system for sprinklers, which provides a means to
identify the temperature classifications of their operating elements. Each temperature
classification corresponds to a range of maximum ceiling temperatures for which the
classification is allowed to be installed. The "Ordinary" classification is suitable for
environments where the ceiling temperatures do not exceed the lower thresholds,
making it appropriate for a maximum ceiling temperature of 80°F (26°C).
pá
re
s
e
pa
ra
A
pr
ob
ar
su
E
xa
m
en
N
FP
A
C
W
B
S
P
17.An office space with 10 ft (3 m) high ceilings is designated as a Light Hazard
Occupancy. It is determined that the area of sprinkler operation is 1,500 ft2 (139 m2).
Assuming the conditions are satisfied for design area reduction, what can the area of
sprinkler operation be reduced to for quick response sprinklers?
A. 800 ft2 (74 m2)
B. 900 ft2 (84 m2)
C. 1,100 ft2 (102 m2)
D. 1,200 ft2 (111 m2)
Answer: C
Explanation:
NFPA 13 allows for a reduction in the design area for quick-response sprinklers under
certain conditions, such as in light hazard occupancies with ceilings not exceeding 12
ft in height. A reduction to 1,100 ft² is consistent with the allowance for using quickresponse sprinklers to cover a smaller area more effectively due to their faster
activation in fire scenarios.
Reference: NFPA 13 guidelines on the application and benefits of quick-response
sprinklers in various occupancy types, including light hazard areas.
La
s
M
ej
or
es
P
re
gu
nt
as
de
lE
xa
m
en
C
W
B
S
P
-P
re
18.A device for use in applications requiring special water discharge patterns,
directional spray, or other unusual discharge characteristics, is known as a
A. nozzie.
B. water mist nozzle.
C. special sprinkler.
D. CMSA sprinkler.
Answer: C
Explanation:
A special sprinkler is a device for use in applications requiring special water discharge
patterns, directional spray, or other unusual discharge characteristics, as defined by
NFPA 13. Examples of special sprinklers include residential sprinklers, exposure
protection sprinklers, water curtains, and sprinkler-protected glazing. Special
sprinklers have different design and installation requirements than standard spray
sprinklers.
Reference: NFPA 13, 2019 edition, section 3.3.27.1; NFPA 13 Handbook, 2019
edition, page 31.
A special sprinkler is designed for specific applications that require unique water
discharge patterns, directional spray, or other specialized discharge characteristics.
These sprinklers are tailored for particular fire risks or architectural constraints where
standard sprinklers may not provide adequate protection.
Reference: NFPA 13's definitions and classifications of sprinklers, including special
sprinklers for unique fire protection challenges.
B
S
P
-P
re
pá
re
s
e
pa
ra
A
pr
ob
ar
su
E
xa
m
en
N
FP
A
C
W
B
S
P
19.A sprinkler system employing automatic sprinklers that are attached to a piping
system that contains air that might or might not be under pressure, with a
supplemental detection system installed in the same areas as the sprinklers, is known
as a:
A. Dry System
B. Preaction System
C. Wet System
D. Deluge System
Answer: B
Explanation:
A preaction system is a sprinkler system employing automatic sprinklers that are
attached to a piping system that contains air that might or might not be under
pressure, with a supplemental detection system installed in the same areas as the
sprinklers. The operation of the detection system opens a valve that permits water to
flow into the piping system and to be discharged from any sprinklers that have
operated. Preaction systems are used to protect areas where accidental activation is
undesired, such as museums, libraries, or data centers.
Reference: NFPA 13, 2019 edition, section 3.3.22.1; NFPA 13 Handbook, 2019
edition, page 30; Types of Sprinkler Systems.
La
s
M
ej
or
es
P
re
gu
nt
as
de
lE
xa
m
en
C
W
20.Which Occupancy Classification is a machine shop considered?
A. Light Hazard
B. Ordinary Hazard Group 1
C. Ordinary Hazard Group 2
D. Extra Hazard Group 1
Answer: B
Explanation:
A machine shop is typically considered an Ordinary Hazard Group 1 occupancy due
to the moderate level of fire load, including the presence of combustible materials,
machinery, and processes that produce sparks or hot metal. This classification guides
the design and installation of sprinkler systems to address the specific fire risks
associated with such environments.
Reference: NFPA 13's occupancy hazard classifications, which help determine the
appropriate sprinkler system design criteria based on the expected fire load and
combustibility of materials present.
21.A warehouse has palletized storage of empty wood crates on wood pallets to a
height of 11 ft (3.4
E
xa
m
en
N
FP
A
C
W
B
S
P
m).
What is the minimum design density?
A. 0.15 gpm/ft2 (6.1 mm/min)
B. 0.20 gpm/ft2 (8.1 mm/min)
C. 0.23 gpm/ft2 (9.2 mm/min)
D. 0.25 gpm/ft2 (10.2 mm/min)
Answer: B
Explanation:
The minimum design density for protecting palletized storage of empty wood crates
on wood pallets up to a certain height is determined by considering the combustibility
of the materials and the configuration of the storage. A design density of 0.20 gpm/ft²
is often recommended for such light hazard commodities to provide adequate water
distribution over the fire area.
Reference: NFPA 13 guidelines for calculating design densities based on the type of
commodity, storage arrangement, and height of storage.
re
gu
nt
as
de
lE
xa
m
en
C
W
B
S
P
-P
re
pá
re
s
e
pa
ra
A
pr
ob
ar
su
22.For an existing antifreeze system without a backflow prevention device, what size
hole is required in the check valve separating the supply and the antifreeze?
A. 1/32 in. (0.79 mm)
B. 1/16 in. (1.59 mm)
C. 1/8 in. (3.17 mm)
D. 1/4 in. (6.35 mm)
Answer: A
Explanation:
If sprinklers are above the level of the water supply to the antifreeze system, a check
valve with a 1/32 in. (0.8 mm) hole in the clapper shall be provided in the U-loop.
La
s
M
ej
or
es
P
23.What is the maximum floor area that can be protected by a single ordinary hazard
sprinkler system?
A. 25,000 ft2 (2,320 m2)
B. 40,000 ft2 (3,720 m2)
C. 52,000 ft2 (4,830 m2)
D. 70,000 ft2 (6,503 m2)
Answer: C
Explanation:
The maximum floor area on any one floor to be protected by sprinklers supplied by
any one sprinkler system riser or combined system riser shall be as follows:
24. Light hazard ? 52,000 ft2 (4830 m2)
25. Ordinary hazard ? 52,000 ft2 (4830 m2)
26. * Extra hazard ? Hydraulically calculated ? 40,000 ft2 (3720 m2)
27. High-piled Storage ? High-piled storage (as defined in 3.3.100) and storage
covered by other NFPA standards ? 40,000 ft2 (3720 m2)
28. In-rack Storage ? 40,000 ft2 (3720 m2)
de
lE
xa
m
en
C
W
B
S
P
-P
re
pá
re
s
e
pa
ra
A
pr
ob
ar
su
E
xa
m
en
N
FP
A
C
W
B
S
P
29.How many sprinklers in a townhome style residential occupancy protected in
accordance with NFPA 13D with 24 ft (7.3 m) flat, smooth, and horizontal ceilings,
with no beams, are required to be calculated for?
A. 1
B. 2
C. 5
D. 10
Answer: B
Explanation:
In residential occupancies like townhomes protected under NFPA 13D, the design
often includes the calculation of sprinkler coverage based on specific design areas
and spacing rules. For a typical room layout, especially with flat and smooth ceilings,
at least 2 sprinklers might be required to be calculated to ensure adequate coverage,
considering possible obstructions and the layout of living spaces.
Reference: NFPA 13D guidelines for the installation of sprinkler systems in residential
occupancies, including townhomes.
La
s
M
ej
or
es
P
re
gu
nt
as
30.The FPE has indicated that a vertical opening shall be protected by closely spaced
sprinklers in combination with a draft stop installed per code. The sprinklers will be
spaced 6 ft (1.83 m) on center.
What is the minimum gpm discharge required per sprinkler head?
A. 10 gpm (38 lpm)
B. 15 gpm (57 lpm)
C. 18 gpm (68 lpm)
D. 20 gpm (76 lpm)
Answer: B
Explanation:
For closely spaced sprinklers protecting a vertical opening with a draft stop, a
minimum discharge of 15 gpm per sprinkler head is commonly required to ensure
sufficient water distribution and penetration for fire suppression within the protected
area. This discharge rate provides a balance between efficiency and effectiveness in
fire control.
Reference: General fire protection engineering principles and NFPA standards related
to the design and installation of sprinkler systems for vertical openings.
N
FP
A
C
W
B
S
P
31.What is the maximum allowable water delivery time for a dry pipe system
protecting an Ordinary Hazard Group II occupancy?
A. 40 seconds
B. 45 seconds
C. 50 seconds
D. 60 seconds
Answer: C
Explanation:
The maximum allowable water delivery time for a dry pipe system protecting an
Ordinary Hazard Group II occupancy is addressed under numeral 8.2.3.6
es
P
re
gu
nt
as
de
lE
xa
m
en
C
W
B
S
P
-P
re
pá
re
s
e
pa
ra
A
pr
ob
ar
su
E
xa
m
en
32.What is the equivalent length of a 45° elbow of 6 in (150 mm) Schedule 10 pipe?
A. 8.8 ft (2.7 m)
B. 9.8 ft (3.0 m)
C. 11.8 ft (3.6 m)
D. 12.8 ft (3.9 m)
Answer: C
Explanation:
The equivalent length of a 45° elbow for 6 in Schedule 10 pipe is often considered to
be around 11.8 ft, accounting for friction loss and the impact on water flow. This
equivalent length helps in hydraulic calculations to ensure the sprinkler system meets
the required design criteria for pressure and flow.
Reference: NFPA 13 and hydraulic calculation principles used in the design and
installation of sprinkler systems, including considerations for pipe fittings like elbows.
La
s
M
ej
or
33.A paddle-type water flow alarm indicator shall be installed only in
A. dry systems.
B. wet systems.
C. deluge systems.
D. pre-action systems.
Answer: B
Explanation:
34.11.3.4* Paddle-Type Waterflow Devices
Paddle-type water-flow alarm indicators shall be installed in wet systems only.
https://up.codes/s/system-attachments
E
xa
m
en
N
FP
A
C
W
B
S
P
35.What is the maximum distance an underground main can be installed under the
building to the riser location without additional requirements?
A. 2 ft (0.6 m)
B. 5 ft (1.5 m)
C. 10 ft (3 m)
D. 15 ft (4.6 m)
Answer: B
Explanation:
NFPA standards allow a certain distance for underground mains to run under a
building to the riser without imposing additional requirements. A distance of up to 5 ft
is commonly accepted, providing a practical allowance for connecting the
underground water supply to the building's sprinkler system while minimizing potential
risks.
Reference: NFPA guidelines for the installation of fire sprinkler systems, including
considerations for underground water supply connections.
La
s
M
ej
or
es
P
re
gu
nt
as
de
lE
xa
m
en
C
W
B
S
P
-P
re
pá
re
s
e
pa
ra
A
pr
ob
ar
su
36.Working plans are required to have the total system volume of the system for
A. wet systems.
B. open-head deluge systems.
C. dry systems.
D. antifreeze systems.
Answer: C
Explanation:
Working plans for dry systems are required to include the total system volume, as this
information is critical for determining the amount of air or nitrogen needed to
pressurize the system and for calculating the time to water delivery. This requirement
helps ensure the system's effective operation and quick response in the event of a
fire.
Reference: NFPA 13 requirements for the documentation and planning of sprinkler
systems, emphasizing the importance of detailed system information for dry
configurations.
37.In an existing system, the vertical clearance between a high volume low speed
(HVLS) fan and a sprinkler shall be
A. 12 in. (300 mm).
B. 24 in. (600 mm).
C. 36 in. (900 mm).
D. 48 in. (1200 mm).
Answer: B
Explanation:
NFPA 13 requires a minimum vertical clearance between HVLS fans and sprinklers to
prevent interference with the sprinkler spray pattern. A 24 in. (600 mm) clearance is
commonly recommended to ensure that the fan does not disrupt the distribution of
water in the event of a fire.
Reference: NFPA 13 guidelines regarding the installation of sprinkler systems in
areas with HVLS fans to ensure effective fire protection coverage.
-P
re
pá
re
s
e
pa
ra
A
pr
ob
ar
su
E
xa
m
en
N
FP
A
C
W
B
S
P
38.When using a 1.5 in. (40 mm) outlet on a hose connection, an approved pressureregulating device shall be installed when the residual pressure exceeds what value?
A. 100 psi (6.9 bar)
B. 175 psi (12.1 bar)
C. 250 psi (17.2 bar)
D. 300 pei (20.7 bar)
Answer: A
Explanation:
When the residual pressure at a 1.5 in. hose connection exceeds 100 psi, an
approved pressure-regulating device is typically required to ensure user safety and to
prevent damage to equipment connected to the hose outlet. This helps maintain
manageable hose stream pressures for firefighting operations.
Reference: NFPA standards for the installation and use of hose connections in
sprinkler systems, focusing on safety and operational effectiveness.
La
s
M
ej
or
es
P
re
gu
nt
as
de
lE
xa
m
en
C
W
B
S
P
39.When utilizing ordinary temperature CMDA sprinkler protection for a single-row
rack storage of an unencapsulated Class I commodity stored 15 ft (4.6 m) high
without in-rack sprinklers with 8 ft (2.4 m) aisles, what is the minimum design density
required?
A. 0.20 gpm/ft2 (8.1 mm/min)
B. 0.32 gpm/ft2 (13 mm/min)
C. 0.54 gpm/ft2 (22 mm/min)
D. 0.86 gpm/ft2 (35 mm/min)
Answer: A
Explanation:
For single-row rack storage of an unencapsulated Class I commodity stored up to 15
ft high without in-rack sprinklers and with 8 ft aisles, a design density of 0.20 gpm/ft² is
commonly used as a starting point in accordance with NFPA 13 guidelines for
ordinary hazard occupancies.
Reference: NFPA 13's commodity classification and design criteria for sprinkler
systems, providing guidance on design densities based on the type of storage and
commodity classification.
40.Antifreeze systems that contain a backflow preventer between the antifreeze
m
en
N
FP
A
C
W
B
S
P
piping and the wet pipe system must be equipped with
A. a relief valve.
B. a sight glass.
C. an accelerator.
D. an expansion chamber.
Answer: D
Explanation:
Antifreeze systems equipped with a backflow preventer must include an expansion
chamber to accommodate the expansion of the antifreeze solution due to temperature
changes. This prevents excessive pressure buildup that could damage the system or
cause unintended discharge.
Reference: NFPA 13 and NFPA 25 requirements for antifreeze systems in sprinkler
installations, emphasizing safety features to accommodate the physical properties of
antifreeze solutions.
La
s
M
ej
or
es
P
re
gu
nt
as
de
lE
xa
m
en
C
W
B
S
P
-P
re
pá
re
s
e
pa
ra
A
pr
ob
ar
su
E
xa
41.What is the minimum calculated design area for a light hazard sprinkler system
protecting an open office space with a noncombustible acoustic ceiling tile installed 6
in. (150 mm) below the bottom of solid wood joists?
A. 900 ft2 (83.6 m2)
B. 1,500 ft2 (139.35 m2)
C. 1,950 ft2 (181.1 m2)
D. 3,000 ft2 (278.7 m2)
Answer: B
Explanation:
For a light hazard occupancy like an open office space with a noncombustible ceiling,
NFPA 13 typically requires a minimum calculated design area of 1,500 ft². This
accounts for the lower fire load and the effective coverage of sprinklers in such
environments.
Reference: NFPA 13 design criteria for light hazard occupancies, which specify the
minimum design areas for sprinkler systems based on occupancy type and ceiling
configuration.
Obtenga la versión
completa de las
preguntas del examen
CWBSP
Killtest.es
Powered by TCPDF (www.tcpdf.org)