FDNY COF P-98 Exam & Practice Test 2026/2027 – Complete
Exam-Style Questions with Detailed Rationales | 100% Verified –
Pass Guaranteed – A+ Graded
Instructions: Read each question carefully. Select the one best answer. Each question
has only one correct answer.
QUESTION 1
Acetylene gas is stored as a liquid in containers under pressure. What is the maximum
safe working pressure for acetylene when used in welding and cutting operations?
A. 5 psi
B. 10 psi
C. 15 psi
D. 25 psi
Correct Answer: C
Rationale: Per FDNY Fire Code FC 2605.4 and the G-60 study material, acetylene gas
shall not be utilized at a pressure exceeding 15 pounds per square inch gauge (psig).
Setting the regulator above 15 psi can cause the acetylene to decompose explosively.
Acetylene is dissolved in a suitable solvent within the container for safe storage and
use.
,QUESTION 2
True or False: Copper tubing may be used to splice an acetylene hose if the connection
is properly secured.
A. True
B. False
Correct Answer: B
Rationale: FALSE. Per the G-60 study material and FC 2605.4, copper tubing should
never be used to splice acetylene hose. Copper reacts chemically with acetylene, and
the reaction may cause an explosion if the tube is subjected to a physical blow. Only
approved hose connections and fittings designed for acetylene service may be used.
QUESTION 3
A contractor is performing oxy-acetylene cutting on a construction site. According to
FDNY Fire Code Chapter 26, what is the minimum separation distance required between
the cutting operation and combustible materials?
A. 15 feet
B. 25 feet
C. 35 feet
D. 50 feet
Correct Answer: C
,Rationale: Per FC 2604.1.1, hot work operations involving cutting or welding shall be
conducted at least 35 feet from combustible materials and combustible waste, or shall
be provided with appropriate shielding to prevent sparks, slag, or heat from igniting
exposed combustibles. All other hot work operations require a minimum of 25 feet.
QUESTION 4
A fire watch must be maintained during any hot work operation. What is the minimum
duration the fire watch must continue after the conclusion of the work?
A. 15 minutes
B. 30 minutes
C. 45 minutes
D. 60 minutes
Correct Answer: B
Rationale: Per FC 2604.2.1, a fire watch shall be maintained during hot work operations,
and the fire watch shall continue for a minimum of 30 minutes after the conclusion of
the work. The commissioner or the responsible person implementing a hot work
program may extend this duration based on the hazards or work being performed.
QUESTION 5
Which Certificate of Fitness is required for a person conducting torch operations using
oxygen and a flammable gas?
, A. F-60
B. G-41
C. G-60
D. P-98
Correct Answer: C
Rationale: Per FC 2603.4.1 and the G-60 study material, torch operations using oxygen
and a flammable gas, and any torch operation for torch-applied roofing systems, shall
be performed by a G-60 Certificate of Fitness holder. The F-60 is required for fire guards
performing fire watch, not for torch operators.
QUESTION 6
True or False: An FDNY permit is required to conduct hot work using oxygen and a
flammable gas, such as acetylene or propane.
A. True
B. False
Correct Answer: A
Rationale: TRUE. Per FC 2601.2 and the G-60 study material, an FDNY permit is required
to conduct hot work using oxygen and a flammable gas. Additionally, a permit is
required for storing, using, or handling any flammable gas (e.g., LPG, CNG, or acetylene)
in excess of 400 SCF, or any oxidizing gas (e.g., oxygen) in excess of 504 SCF.
Exam-Style Questions with Detailed Rationales | 100% Verified –
Pass Guaranteed – A+ Graded
Instructions: Read each question carefully. Select the one best answer. Each question
has only one correct answer.
QUESTION 1
Acetylene gas is stored as a liquid in containers under pressure. What is the maximum
safe working pressure for acetylene when used in welding and cutting operations?
A. 5 psi
B. 10 psi
C. 15 psi
D. 25 psi
Correct Answer: C
Rationale: Per FDNY Fire Code FC 2605.4 and the G-60 study material, acetylene gas
shall not be utilized at a pressure exceeding 15 pounds per square inch gauge (psig).
Setting the regulator above 15 psi can cause the acetylene to decompose explosively.
Acetylene is dissolved in a suitable solvent within the container for safe storage and
use.
,QUESTION 2
True or False: Copper tubing may be used to splice an acetylene hose if the connection
is properly secured.
A. True
B. False
Correct Answer: B
Rationale: FALSE. Per the G-60 study material and FC 2605.4, copper tubing should
never be used to splice acetylene hose. Copper reacts chemically with acetylene, and
the reaction may cause an explosion if the tube is subjected to a physical blow. Only
approved hose connections and fittings designed for acetylene service may be used.
QUESTION 3
A contractor is performing oxy-acetylene cutting on a construction site. According to
FDNY Fire Code Chapter 26, what is the minimum separation distance required between
the cutting operation and combustible materials?
A. 15 feet
B. 25 feet
C. 35 feet
D. 50 feet
Correct Answer: C
,Rationale: Per FC 2604.1.1, hot work operations involving cutting or welding shall be
conducted at least 35 feet from combustible materials and combustible waste, or shall
be provided with appropriate shielding to prevent sparks, slag, or heat from igniting
exposed combustibles. All other hot work operations require a minimum of 25 feet.
QUESTION 4
A fire watch must be maintained during any hot work operation. What is the minimum
duration the fire watch must continue after the conclusion of the work?
A. 15 minutes
B. 30 minutes
C. 45 minutes
D. 60 minutes
Correct Answer: B
Rationale: Per FC 2604.2.1, a fire watch shall be maintained during hot work operations,
and the fire watch shall continue for a minimum of 30 minutes after the conclusion of
the work. The commissioner or the responsible person implementing a hot work
program may extend this duration based on the hazards or work being performed.
QUESTION 5
Which Certificate of Fitness is required for a person conducting torch operations using
oxygen and a flammable gas?
, A. F-60
B. G-41
C. G-60
D. P-98
Correct Answer: C
Rationale: Per FC 2603.4.1 and the G-60 study material, torch operations using oxygen
and a flammable gas, and any torch operation for torch-applied roofing systems, shall
be performed by a G-60 Certificate of Fitness holder. The F-60 is required for fire guards
performing fire watch, not for torch operators.
QUESTION 6
True or False: An FDNY permit is required to conduct hot work using oxygen and a
flammable gas, such as acetylene or propane.
A. True
B. False
Correct Answer: A
Rationale: TRUE. Per FC 2601.2 and the G-60 study material, an FDNY permit is required
to conduct hot work using oxygen and a flammable gas. Additionally, a permit is
required for storing, using, or handling any flammable gas (e.g., LPG, CNG, or acetylene)
in excess of 400 SCF, or any oxidizing gas (e.g., oxygen) in excess of 504 SCF.
