NFPA 10 - Standards for Portable Fire
Extinguishers Practice Questions with
Complete Solutions (Latest 2025)
The A rating is a water equivalency rating. Each A is
equivalent to ________ of water. - Correct Answers
✅Answer: 1 1/4 gallons.
Note that 4A = 5 gallons of water.
The ________ rating is equivalent to the amount of square
footage that the extinguisher can cover, handled by a
professional. - Correct Answers ✅Answer: B:C
Note that 20 B:C = 20 square feet of coverage.
C indicates it is suitable for use on ________ ________ ________.
- Correct Answers ✅Answer: electrically energized
equipment.
8.8 Condemning Extinguishers
8.8.1 Fails Test or Examination
When a fire extinguisher cylinder, shell, or cartridge fails a
hydrostatic pressure test or fails to pass a visual examination
as specified in 8.4.2, it shall be condemned or destroyed by
the owner or the owner's agent.
8.4.2* Examination of Cylinder Condition
,NFPA 10 - Standards for Portable Fire
Extinguishers Practice Questions with
Complete Solutions (Latest 2025)
Where a fire extinguisher cylinder or shell exhibits one or
more of the following conditions, it shall not be
hydrostatically tested but shall be condemned or destroyed
by the owner or at the owner's discretion:
A.8.4.2 A condemned cylinder or fire extinguisher can be
destroyed only by its owner or at the owner's discretion. It is
strongly recommended that a record be kept of cylinders or
fire extinguishers that are recommended to be destroyed.
(1)* Where repairs by soldering, welding, brazing, or use of
patching compound exist
A.8.4.2(1) For welding or brazing on mild steel shells, consult
the - Correct Answers ✅
8.7.3 High-Pressure Cylinders and Cartridges
8.7.3.1 Cylinders or cartridges that pass the hydrostatic test
shall be stamped with the retester's identification number
and the month and year of the retest per DOT/TC
requirements.
, NFPA 10 - Standards for Portable Fire
Extinguishers Practice Questions with
Complete Solutions (Latest 2025)
8.7.3.2 Stamping shall be placed only on the shoulder, top,
head, neck, or foot ring (where provided) of the cylinder or in
accordance with 49 CFR 180.213(c)(1).
8.7.4 Hose Assemblies. Hose assemblies that pass a
hydrostatic test shall not require recording, labeling, or
marking. - Correct Answers ✅
8.7.2* Low-Pressure Cylinders
A.8.7.2 Figure A.8.7.2 provides a guide to the design of a
hydrostatic test label. All print should be black on a silver
background.
8.7.2.1 Fire extinguisher cylinders of the low-pressure non-
DOT type that pass a hydrostatic test shall have the following
information recorded on a label:
(1) Month and year the test was performed, indicated by a
perforation, such as is done by a hand punch
(2) Test pressure used
(3) Name or initials of the person performing the test and
name of the agency performing the test
Extinguishers Practice Questions with
Complete Solutions (Latest 2025)
The A rating is a water equivalency rating. Each A is
equivalent to ________ of water. - Correct Answers
✅Answer: 1 1/4 gallons.
Note that 4A = 5 gallons of water.
The ________ rating is equivalent to the amount of square
footage that the extinguisher can cover, handled by a
professional. - Correct Answers ✅Answer: B:C
Note that 20 B:C = 20 square feet of coverage.
C indicates it is suitable for use on ________ ________ ________.
- Correct Answers ✅Answer: electrically energized
equipment.
8.8 Condemning Extinguishers
8.8.1 Fails Test or Examination
When a fire extinguisher cylinder, shell, or cartridge fails a
hydrostatic pressure test or fails to pass a visual examination
as specified in 8.4.2, it shall be condemned or destroyed by
the owner or the owner's agent.
8.4.2* Examination of Cylinder Condition
,NFPA 10 - Standards for Portable Fire
Extinguishers Practice Questions with
Complete Solutions (Latest 2025)
Where a fire extinguisher cylinder or shell exhibits one or
more of the following conditions, it shall not be
hydrostatically tested but shall be condemned or destroyed
by the owner or at the owner's discretion:
A.8.4.2 A condemned cylinder or fire extinguisher can be
destroyed only by its owner or at the owner's discretion. It is
strongly recommended that a record be kept of cylinders or
fire extinguishers that are recommended to be destroyed.
(1)* Where repairs by soldering, welding, brazing, or use of
patching compound exist
A.8.4.2(1) For welding or brazing on mild steel shells, consult
the - Correct Answers ✅
8.7.3 High-Pressure Cylinders and Cartridges
8.7.3.1 Cylinders or cartridges that pass the hydrostatic test
shall be stamped with the retester's identification number
and the month and year of the retest per DOT/TC
requirements.
, NFPA 10 - Standards for Portable Fire
Extinguishers Practice Questions with
Complete Solutions (Latest 2025)
8.7.3.2 Stamping shall be placed only on the shoulder, top,
head, neck, or foot ring (where provided) of the cylinder or in
accordance with 49 CFR 180.213(c)(1).
8.7.4 Hose Assemblies. Hose assemblies that pass a
hydrostatic test shall not require recording, labeling, or
marking. - Correct Answers ✅
8.7.2* Low-Pressure Cylinders
A.8.7.2 Figure A.8.7.2 provides a guide to the design of a
hydrostatic test label. All print should be black on a silver
background.
8.7.2.1 Fire extinguisher cylinders of the low-pressure non-
DOT type that pass a hydrostatic test shall have the following
information recorded on a label:
(1) Month and year the test was performed, indicated by a
perforation, such as is done by a hand punch
(2) Test pressure used
(3) Name or initials of the person performing the test and
name of the agency performing the test
