FDNY G-46 EXAM –FIRE DEPARTMENT CITY OF NEW YORK TEST
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EXAM
Non-flammable gas
Gas at 68°F or less at 14.7 pounds per square inch absolute (psia) of pressure
which:
Is NOT ignitable at 14.7 psia when in mixture of 13 percent or less by volume
with air, in accordance with testing procedures set forth in ASTM E681 OR
DOES NOT have a flammable range at 14.7 psia with air of at least 12 percent,
regardless of lower limit, in accordance with testing procedures set forth in
ASTM E681.
Ammonia
Classified by the Department of Transportation as nonflammable. However,
______ vapor in high concentrations (16-25% by weight in air) will burn.
Unlikely to ever happen except in confined spaces or in the proximity of a large
spill.
Handling & Use of Non-Flammable Compressed Gases
In quantities requiring a permit, including non-piped medical gas systems, shall
be under the personal supervision of a person holding G-46 COF.
Storage of Non-Flammable Compressed Gases
The storage of Compressed gases in quantities requiring a permit, including
medical gases that are not piped, shall be under the general supervision of a
person holding the G-46 COF.
Filling of Containers with Non-Flammable Compressed Gases
The transfer of nonflammable compressed gases between containers shall
be performed by a person holding a G-46 COF.
Site-specific permit
Authorizes the permit holder to store, handle, and use nonflammable
compressed gases at a specific premises or location. May be permanent OR
,temporary. Permanent permits are valid for 12 months and every permit or
renewal requires an inspection. Temporary permits may be valid from one day
to 12 months depending on the construction or operation needed.
Citywide permit
Authorizes permit holder to store, handle, use, sell or transport nonflammable
gases, or conduct an operation on a citywide basis, for which a permit is
required by the fire department. A citywide permit is valid to conduct an
operation at one of more locations provided the duration of such activity at any
individual location does not exceed 30 days. Any periods above 30 days
require a site-specific permit.
Quantities of Gases requiring permit (Amount in SCF)
Corrosive - 400 SCF
Nonflammable and nonoxidizing (besides CO2) - 3,000 SCF
CO2 - 4,500 SCF
Oxidizing - 504 SCF
Highly Toxic - Any Amount
Toxic - Any Amount
Unstable (reactive) - Any Amount
NFPA 704 Diamond Sign Explanation
The transport of hazardous materials is accompanied by the use of US DOT
compliant placards and labels to assist identification of hazardous materials on
the roadway, railways, waterway and in the air. In a similar manner the storage,
handling & use of hazardous materials is accompanied in the fire code by a
requirement for the use of consistent signage to alert people, including first
responders, to the Prescence of hazardous materials in a facility. The intent of
the signage is to provide an indication of both the type of hazardous materials
present and the relative degree of harm that then material can pose. Uses
symbols, colors, and numbers to communicate this in a visual manner. The
triggering amount for the sign requirement is the amount required for a
permit.
Nonliquified compressed gas
,Gases, other than those in a solution, that are in a packaging under the charged
pressure and are entirely gaseous at a temperature of 68°F.
Liquified compressed gas
Gases that, in a packaging under the charged pressure, are partially liquid at
68°F.
Compressed gases in solution
Nonliquified gases that are dissolved in a solvent.
Compressed gas mixtures
A mixture of two or more compressed gases contained in a single packaging, the
hazard properties of which are represented by the properties of the mixture as a
whole.
Container
For solid and liquid hazardous materials, a vessel of 60 gallons or less in
capacity used for storage or transportation. For compressed gases, a cylinder,
pressure vessel or tank designed for pressures greater than one atmosphere at
68°F
Compressed Gas Container
A pressure container designed to hold
compressed gases at pressures greater than one atmosphere at 68°F
Compressed Gas System
An assembly of components, such as containers, reactors, pumps, compressors
and connecting piping and tubing, designed to contain, distribute or transport
compressed gases
Containment System
A gas-tight recovery system comprised of devices or equipment which, when
placed over or around the portion of the compressed gas container that is
leaking, stops or controls the escape of gas from the container.
Containment Vessel
A gas-tight vessel which, when installed or placed over or around a leaking
compressed gas container, confines the container and the gas leaking therefrom.
Corrosive Gas
, A gas that causes visible destruction of or irreversible alterations in living tissue
by chemical action at the site of contact.
DOTn
United States Department of Transportation
Excess Flow Valve
A valve inserted into a compressed gas container that is designed to shut off the
flow of gas in the event that its predetermined flow is exceeded.
Excess Flow Control
A fail-safe system or other approved device, equipment or system designed to
shut off flow caused by a rupture in a pressurized piping system.
Exhausted Enclosure
A device, typically consisting of a hood equipped with a fan that serves to
capture and exhaust fumes, mist, vapors and gases generated at a workstation or
other local environment. An exhausted enclosure does not include a room
provided with general ventilation.
Flammable Gas
A material which is a gas at 68°F or less at 14.7 pounds per square inch absolute
(psia) of pressure which:
1. Is ignitable at 14.7 psia when in a mixture of 13 percent or less by volume
with air, in accordance with testing procedures set forth in ASTM E 681; or
2. Has a flammable range at 14.7 psia with air of at least 12 percent, regardless
of the lower limit, in accordance with testing procedures set forth in ASTM E
681.
Gas room
A separately ventilated, fully enclosed room in which only compressed gases
and associated equipment and supplies are stored or used.
General Supervision
Supervision by the holder of any department certificate who is responsible for
performing the duties set forth in NYC fire code but need not be personally
present on the premises at all times
Handling
PREP | QUESTIONS AND ANSWERS | VERIFIED ANSWERS | LATEST
EXAM
Non-flammable gas
Gas at 68°F or less at 14.7 pounds per square inch absolute (psia) of pressure
which:
Is NOT ignitable at 14.7 psia when in mixture of 13 percent or less by volume
with air, in accordance with testing procedures set forth in ASTM E681 OR
DOES NOT have a flammable range at 14.7 psia with air of at least 12 percent,
regardless of lower limit, in accordance with testing procedures set forth in
ASTM E681.
Ammonia
Classified by the Department of Transportation as nonflammable. However,
______ vapor in high concentrations (16-25% by weight in air) will burn.
Unlikely to ever happen except in confined spaces or in the proximity of a large
spill.
Handling & Use of Non-Flammable Compressed Gases
In quantities requiring a permit, including non-piped medical gas systems, shall
be under the personal supervision of a person holding G-46 COF.
Storage of Non-Flammable Compressed Gases
The storage of Compressed gases in quantities requiring a permit, including
medical gases that are not piped, shall be under the general supervision of a
person holding the G-46 COF.
Filling of Containers with Non-Flammable Compressed Gases
The transfer of nonflammable compressed gases between containers shall
be performed by a person holding a G-46 COF.
Site-specific permit
Authorizes the permit holder to store, handle, and use nonflammable
compressed gases at a specific premises or location. May be permanent OR
,temporary. Permanent permits are valid for 12 months and every permit or
renewal requires an inspection. Temporary permits may be valid from one day
to 12 months depending on the construction or operation needed.
Citywide permit
Authorizes permit holder to store, handle, use, sell or transport nonflammable
gases, or conduct an operation on a citywide basis, for which a permit is
required by the fire department. A citywide permit is valid to conduct an
operation at one of more locations provided the duration of such activity at any
individual location does not exceed 30 days. Any periods above 30 days
require a site-specific permit.
Quantities of Gases requiring permit (Amount in SCF)
Corrosive - 400 SCF
Nonflammable and nonoxidizing (besides CO2) - 3,000 SCF
CO2 - 4,500 SCF
Oxidizing - 504 SCF
Highly Toxic - Any Amount
Toxic - Any Amount
Unstable (reactive) - Any Amount
NFPA 704 Diamond Sign Explanation
The transport of hazardous materials is accompanied by the use of US DOT
compliant placards and labels to assist identification of hazardous materials on
the roadway, railways, waterway and in the air. In a similar manner the storage,
handling & use of hazardous materials is accompanied in the fire code by a
requirement for the use of consistent signage to alert people, including first
responders, to the Prescence of hazardous materials in a facility. The intent of
the signage is to provide an indication of both the type of hazardous materials
present and the relative degree of harm that then material can pose. Uses
symbols, colors, and numbers to communicate this in a visual manner. The
triggering amount for the sign requirement is the amount required for a
permit.
Nonliquified compressed gas
,Gases, other than those in a solution, that are in a packaging under the charged
pressure and are entirely gaseous at a temperature of 68°F.
Liquified compressed gas
Gases that, in a packaging under the charged pressure, are partially liquid at
68°F.
Compressed gases in solution
Nonliquified gases that are dissolved in a solvent.
Compressed gas mixtures
A mixture of two or more compressed gases contained in a single packaging, the
hazard properties of which are represented by the properties of the mixture as a
whole.
Container
For solid and liquid hazardous materials, a vessel of 60 gallons or less in
capacity used for storage or transportation. For compressed gases, a cylinder,
pressure vessel or tank designed for pressures greater than one atmosphere at
68°F
Compressed Gas Container
A pressure container designed to hold
compressed gases at pressures greater than one atmosphere at 68°F
Compressed Gas System
An assembly of components, such as containers, reactors, pumps, compressors
and connecting piping and tubing, designed to contain, distribute or transport
compressed gases
Containment System
A gas-tight recovery system comprised of devices or equipment which, when
placed over or around the portion of the compressed gas container that is
leaking, stops or controls the escape of gas from the container.
Containment Vessel
A gas-tight vessel which, when installed or placed over or around a leaking
compressed gas container, confines the container and the gas leaking therefrom.
Corrosive Gas
, A gas that causes visible destruction of or irreversible alterations in living tissue
by chemical action at the site of contact.
DOTn
United States Department of Transportation
Excess Flow Valve
A valve inserted into a compressed gas container that is designed to shut off the
flow of gas in the event that its predetermined flow is exceeded.
Excess Flow Control
A fail-safe system or other approved device, equipment or system designed to
shut off flow caused by a rupture in a pressurized piping system.
Exhausted Enclosure
A device, typically consisting of a hood equipped with a fan that serves to
capture and exhaust fumes, mist, vapors and gases generated at a workstation or
other local environment. An exhausted enclosure does not include a room
provided with general ventilation.
Flammable Gas
A material which is a gas at 68°F or less at 14.7 pounds per square inch absolute
(psia) of pressure which:
1. Is ignitable at 14.7 psia when in a mixture of 13 percent or less by volume
with air, in accordance with testing procedures set forth in ASTM E 681; or
2. Has a flammable range at 14.7 psia with air of at least 12 percent, regardless
of the lower limit, in accordance with testing procedures set forth in ASTM E
681.
Gas room
A separately ventilated, fully enclosed room in which only compressed gases
and associated equipment and supplies are stored or used.
General Supervision
Supervision by the holder of any department certificate who is responsible for
performing the duties set forth in NYC fire code but need not be personally
present on the premises at all times
Handling
