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Minnesota Post Test GRADED A+ GUARANTEED
PASS
How often do you inspect private fire hydrants?
Annually or after each operation
Reference: NFPA 25, 2017 Edition, Section 7.3.1 specifies that private
fire hydrants shall be inspected annually or after each operation.
What is NFPA 13R used for?
Residential occupancies up to and including four stories in height
Reference: NFPA 13R, 2016 Edition is titled “Standard for the Installation
of Sprinkler Systems in Low-Rise Residential Occupancies.”
What is the coverage area for Ordinary Hazard heads?
130 square feet
Reference: NFPA 13, 2016 Edition, Table 8.6.2.2.1(b)
What is the coverage area for Light Hazard heads?
225 square feet
Reference: NFPA 13, 2016 Edition, Section 8.6.2.2.1 and Table
8.6.2.2.1(a) and Minnesota State Fire Code, 2020 Edition, Section
903.3.1.1 adopts NFPA 13 by reference.
What is the coverage area for Extra Hazard heads?
90-130 square feet
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Reference: NFPA 13, 2016 Edition specifies typical coverage areas for
extra hazard occupancies, although specific variations may apply based
on the hazard type and storage arrangement.
What is the coverage area for ESFR heads?
100 square feet
Reference: NFPA 13, 2016 Edition, Section 8.12.2.2.1 specifies the
maximum allowable coverage area for ESFR sprinklers.
What is the coverage area for Storage heads?
100 or 130 square feet
Reference: NFPA 13, 2016 Edition, Section 12.6.2 specifies typical
coverage areas for storage occupancies, although specific variations may
apply based on commodity classification and storage height.
Minimum air pressure for a pressure tank?
75 psi
Reference: NFPA 20, 2016 Edition, Section 14.2.4 specifies that the
minimum air pressure in a pressure tank shall be 75 psi.
What pipe sizes can feed 1½" hose lines and for what length?
1" for horizontal runs up to 20’
1¼" for 20’ to 80’
1½" for runs over 80’
Reference: NFPA 14, 2016 Edition, Section 7.3.1 specifies the minimum
pipe sizes for 1½" hose lines based on length.
What are the bulb colors for each temperature rating?
Ordinary (135°F to 170°F / 57°C to 77°C):
Glass Bulb Colors: Orange or Red
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Intermediate (175°F to 225°F / 79°C to 107°C):
Glass Bulb Colors: Yellow or Green
High (250°F to 300°F / 121°C to 149°C):
Glass Bulb Colors: Blue
Extra High (325°F to 375°F / 163°C to 191°C):
Glass Bulb Colors: Purple
Reference:
NFPA 13, 2016 Edition, Table 5.1.1.6.1
Question 104
Control valves that are controlling a fire sprinkler system in an area
accessible to the public, and has 20 or less sprinklers on it does not have
to be monitored or locked.
True/False
False
Per Minnesota State Fire Code, 2020 Edition, Section 903.4, all control
valves for fire sprinkler systems shall be electrically supervised by a listed
fire alarm control unit, regardless of the number of sprinklers served.
This requirement does not have an exception for systems with 20 or
fewer sprinklers when accessible to the public.
Reference:
Minnesota State Fire Code, 2020 Edition, Section 903.4
How often is the interior of a pressure tank inspected?
The interior of pressure tanks used for fire protection systems must be
inspected every 5 years and every 3 years for tanks without corrosion
protection.
Reference:
NFPA 25, 2017 Edition, Section 9.2.5.1.1 specifies that the interior of
steel tanks without corrosion protection shall be inspected every 3
years.
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How often do you flow standpipes?
5 years
Reference: NFPA 25, 2017 Edition, Section 6.3.2.1 specifies that
standpipes shall be flow tested at least every 5 years.
How many heads can be taken off a cold weather valve?
10
Reference: NFPA 13, 2016 Edition, Section 8.16.1.5.3 specifies that up to
10 sprinklers can be taken off a cold weather valve.
Hanger spacing from end of pipe
1" - 3’
1¼" - 4’
1½" and up - 5’
Reference: NFPA 13, 2016 Edition, Section 9.2.3.4.1 specifies the
following hanger spacing from the end of the pipe:
For 1-inch pipe: 36 inches
For 1 1/4-inch pipe: 48 inches
For 1 1/2-inch pipe and larger: 60 inches
Duration of water supply for NFPA 13D systems
System demand times 10 minutes
Reference: NFPA 13D, 2016 Edition, Section 8.6.2 specifies that the
water supply for one- and two-family dwellings should be sufficient for
the system demand for a minimum of 10 minutes.
Why must a check valve with a 3/32" hole in the Clapper be installed in
the system riser below the test valve in freezer spaces?
To prevent evaporation of priming water into system
Reference: NFPA 13, 2016 Edition, Section 7.8.2.7.1 specifies that a
check valve with a small hole in the clapper helps to maintain a slight air
Minnesota Post Test GRADED A+ GUARANTEED
PASS
How often do you inspect private fire hydrants?
Annually or after each operation
Reference: NFPA 25, 2017 Edition, Section 7.3.1 specifies that private
fire hydrants shall be inspected annually or after each operation.
What is NFPA 13R used for?
Residential occupancies up to and including four stories in height
Reference: NFPA 13R, 2016 Edition is titled “Standard for the Installation
of Sprinkler Systems in Low-Rise Residential Occupancies.”
What is the coverage area for Ordinary Hazard heads?
130 square feet
Reference: NFPA 13, 2016 Edition, Table 8.6.2.2.1(b)
What is the coverage area for Light Hazard heads?
225 square feet
Reference: NFPA 13, 2016 Edition, Section 8.6.2.2.1 and Table
8.6.2.2.1(a) and Minnesota State Fire Code, 2020 Edition, Section
903.3.1.1 adopts NFPA 13 by reference.
What is the coverage area for Extra Hazard heads?
90-130 square feet
,2|Page
Reference: NFPA 13, 2016 Edition specifies typical coverage areas for
extra hazard occupancies, although specific variations may apply based
on the hazard type and storage arrangement.
What is the coverage area for ESFR heads?
100 square feet
Reference: NFPA 13, 2016 Edition, Section 8.12.2.2.1 specifies the
maximum allowable coverage area for ESFR sprinklers.
What is the coverage area for Storage heads?
100 or 130 square feet
Reference: NFPA 13, 2016 Edition, Section 12.6.2 specifies typical
coverage areas for storage occupancies, although specific variations may
apply based on commodity classification and storage height.
Minimum air pressure for a pressure tank?
75 psi
Reference: NFPA 20, 2016 Edition, Section 14.2.4 specifies that the
minimum air pressure in a pressure tank shall be 75 psi.
What pipe sizes can feed 1½" hose lines and for what length?
1" for horizontal runs up to 20’
1¼" for 20’ to 80’
1½" for runs over 80’
Reference: NFPA 14, 2016 Edition, Section 7.3.1 specifies the minimum
pipe sizes for 1½" hose lines based on length.
What are the bulb colors for each temperature rating?
Ordinary (135°F to 170°F / 57°C to 77°C):
Glass Bulb Colors: Orange or Red
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Intermediate (175°F to 225°F / 79°C to 107°C):
Glass Bulb Colors: Yellow or Green
High (250°F to 300°F / 121°C to 149°C):
Glass Bulb Colors: Blue
Extra High (325°F to 375°F / 163°C to 191°C):
Glass Bulb Colors: Purple
Reference:
NFPA 13, 2016 Edition, Table 5.1.1.6.1
Question 104
Control valves that are controlling a fire sprinkler system in an area
accessible to the public, and has 20 or less sprinklers on it does not have
to be monitored or locked.
True/False
False
Per Minnesota State Fire Code, 2020 Edition, Section 903.4, all control
valves for fire sprinkler systems shall be electrically supervised by a listed
fire alarm control unit, regardless of the number of sprinklers served.
This requirement does not have an exception for systems with 20 or
fewer sprinklers when accessible to the public.
Reference:
Minnesota State Fire Code, 2020 Edition, Section 903.4
How often is the interior of a pressure tank inspected?
The interior of pressure tanks used for fire protection systems must be
inspected every 5 years and every 3 years for tanks without corrosion
protection.
Reference:
NFPA 25, 2017 Edition, Section 9.2.5.1.1 specifies that the interior of
steel tanks without corrosion protection shall be inspected every 3
years.
, 4|Page
How often do you flow standpipes?
5 years
Reference: NFPA 25, 2017 Edition, Section 6.3.2.1 specifies that
standpipes shall be flow tested at least every 5 years.
How many heads can be taken off a cold weather valve?
10
Reference: NFPA 13, 2016 Edition, Section 8.16.1.5.3 specifies that up to
10 sprinklers can be taken off a cold weather valve.
Hanger spacing from end of pipe
1" - 3’
1¼" - 4’
1½" and up - 5’
Reference: NFPA 13, 2016 Edition, Section 9.2.3.4.1 specifies the
following hanger spacing from the end of the pipe:
For 1-inch pipe: 36 inches
For 1 1/4-inch pipe: 48 inches
For 1 1/2-inch pipe and larger: 60 inches
Duration of water supply for NFPA 13D systems
System demand times 10 minutes
Reference: NFPA 13D, 2016 Edition, Section 8.6.2 specifies that the
water supply for one- and two-family dwellings should be sufficient for
the system demand for a minimum of 10 minutes.
Why must a check valve with a 3/32" hole in the Clapper be installed in
the system riser below the test valve in freezer spaces?
To prevent evaporation of priming water into system
Reference: NFPA 13, 2016 Edition, Section 7.8.2.7.1 specifies that a
check valve with a small hole in the clapper helps to maintain a slight air
