NM MS-12 Fire Protection Systems Actual Exam Newest 2026
Questions with Answers & Rationales | Instant Pdf Download.
Overview The MS12 Exam licenses contractors in fire
protection systems. It covers sprinklers, standpipes, alarms,
fire pumps, hydra
SECTION 1: SPRINKLER SYSTEMS & SYSTEM TYPES
Q1. Under New Mexico law, what is the primary role of an MS-12 Journeyman
Fire Protection Systems technician?
A) To design fire protection systems
B) To perform fire protection system work under the supervision of a licensed MS-
12 contractor
C) To conduct fire investigations
D) To sell fire protection equipment
Correct Answer: B
Rationale: A journeyman (MS-12J) works under the direction and responsibility of
a licensed master contractor (MS-12). The qualifying party must be on the
company payroll and cannot be a subcontractor .
Q2. Which NFPA standard is the primary installation standard for fire sprinkler
systems?
A) NFPA 13
B) NFPA 14
C) NFPA 20
D) NFPA 25
Correct Answer: A
,Rationale: NFPA 13 is the standard for the installation of sprinkler systems. It is the
core reference for the MS-12 exam and covers all aspects of sprinkler system
design and installation .
Q3. Which NFPA standard covers the inspection, testing, and maintenance (ITM)
of water-based fire protection systems?
A) NFPA 13
B) NFPA 14
C) NFPA 20
D) NFPA 25
Correct Answer: D
Rationale: NFPA 25 is the primary standard for the inspection, testing, and
maintenance of water-based fire protection systems. It is a critical reference for
the MS-12 exam .
Q4. A wet pipe sprinkler system contains:
A) Compressed air
B) Water under pressure at all times
C) A dry chemical agent
D) Nitrogen gas
Correct Answer: B
Rationale: A wet pipe system is the most common type of sprinkler system. It
contains water under pressure at all times, ready to discharge immediately upon
sprinkler activation .
Q5. A dry pipe sprinkler system is typically used where:
, A) Water damage must be minimized
B) There is a risk of freezing temperatures
C) High-challenge fires are expected
D) The water supply is limited
Correct Answer: B
Rationale: Dry pipe systems use compressed air or nitrogen to hold back water in
the valve, preventing frozen pipes in unheated areas where freezing temperatures
are a risk .
Q6. The component that holds back water in a dry pipe valve is:
A) A clapper latched by air pressure
B) A fusible link
C) An electric solenoid
D) A check valve
Correct Answer: A
Rationale: In a dry pipe valve, a clapper is held in place by air pressure in the
system piping. When a sprinkler opens, air pressure drops, the clapper releases,
and water flows into the system .
Q7. What type of system activates all sprinklers simultaneously upon detection?
A) Wet pipe
B) Dry pipe
C) Pre-action
D) Deluge
Correct Answer: D
Rationale: A deluge system has open sprinklers and is activated by a separate fire
detection system. All sprinklers discharge water simultaneously when the system is
activated .
Questions with Answers & Rationales | Instant Pdf Download.
Overview The MS12 Exam licenses contractors in fire
protection systems. It covers sprinklers, standpipes, alarms,
fire pumps, hydra
SECTION 1: SPRINKLER SYSTEMS & SYSTEM TYPES
Q1. Under New Mexico law, what is the primary role of an MS-12 Journeyman
Fire Protection Systems technician?
A) To design fire protection systems
B) To perform fire protection system work under the supervision of a licensed MS-
12 contractor
C) To conduct fire investigations
D) To sell fire protection equipment
Correct Answer: B
Rationale: A journeyman (MS-12J) works under the direction and responsibility of
a licensed master contractor (MS-12). The qualifying party must be on the
company payroll and cannot be a subcontractor .
Q2. Which NFPA standard is the primary installation standard for fire sprinkler
systems?
A) NFPA 13
B) NFPA 14
C) NFPA 20
D) NFPA 25
Correct Answer: A
,Rationale: NFPA 13 is the standard for the installation of sprinkler systems. It is the
core reference for the MS-12 exam and covers all aspects of sprinkler system
design and installation .
Q3. Which NFPA standard covers the inspection, testing, and maintenance (ITM)
of water-based fire protection systems?
A) NFPA 13
B) NFPA 14
C) NFPA 20
D) NFPA 25
Correct Answer: D
Rationale: NFPA 25 is the primary standard for the inspection, testing, and
maintenance of water-based fire protection systems. It is a critical reference for
the MS-12 exam .
Q4. A wet pipe sprinkler system contains:
A) Compressed air
B) Water under pressure at all times
C) A dry chemical agent
D) Nitrogen gas
Correct Answer: B
Rationale: A wet pipe system is the most common type of sprinkler system. It
contains water under pressure at all times, ready to discharge immediately upon
sprinkler activation .
Q5. A dry pipe sprinkler system is typically used where:
, A) Water damage must be minimized
B) There is a risk of freezing temperatures
C) High-challenge fires are expected
D) The water supply is limited
Correct Answer: B
Rationale: Dry pipe systems use compressed air or nitrogen to hold back water in
the valve, preventing frozen pipes in unheated areas where freezing temperatures
are a risk .
Q6. The component that holds back water in a dry pipe valve is:
A) A clapper latched by air pressure
B) A fusible link
C) An electric solenoid
D) A check valve
Correct Answer: A
Rationale: In a dry pipe valve, a clapper is held in place by air pressure in the
system piping. When a sprinkler opens, air pressure drops, the clapper releases,
and water flows into the system .
Q7. What type of system activates all sprinklers simultaneously upon detection?
A) Wet pipe
B) Dry pipe
C) Pre-action
D) Deluge
Correct Answer: D
Rationale: A deluge system has open sprinklers and is activated by a separate fire
detection system. All sprinklers discharge water simultaneously when the system is
activated .
