F-60 Study Material Torch Operations
_________ processes often include oxygen and fuel gas - ANS-welding and cutting
\25 feet rule for other hot work operation - ANS-all other hot work operations shall be
conducted at least 25 feet from combustible materials and combustible waste shall
be provided with appropriate shielding to prevent sparks, slag, or heat from igniting
exposed combustibles
\35 feet rule for cutting and welding operation - ANS-hot work operations involving
cutting or welding shall be conducted at least 35 feet from combustible materials and
combustible waste shall be provided with appropriate shielding to prevent sparks,
slag, or heat from igniting exposed combustibles
\A portable fire extinguisher with at least 2-A:20--B:C rating... - ANS-must be readily
accessible within 30 feet of the location where hot work is performed and where the
fire guards are positioned
-in case of fire, 911 must be called
\A pre-hot work check must verify the following - ANS-1-the hot work equip. is in
good working order
2-the hot work area is clear of combustibles and flammable solids
(35 feet rule and 25 feet rule)
3-exposed construction is of noncombustible materials, or if combustible, is
protected
4-openings are protected
5-hot work area floors are clear of combustible waste accumulation
6-fire watch personnel, where required, are assigned
7-approved actions have been taken to prevent accidental activation of fire
extinguishing systems and detection equipment (sprinkler protection and fire
detection systems)
8-portable fire extinguishers and fire hoses (where provided) are operable and
available
9-all persons performing hot work possess certificates of fitness, where such
certificates are required
10-all persons performing hot work requiring a permit possess a site-specific permit
or citywide permit, authorizing such work
\A sign explaining safe handling procedures for LPG should be posted near all LPG
appliances. This sign should indicate the following: - ANS--how to connect all
regulators, manifolds, and hoses to containers and appliances
-how to detect LPG leaks safely
-how to start up and shut down the appliance and related equipment
-the names, address, and telephone number of a local supplier
-emergency number; 911
,\A Torch-applied roof system - ANS-Bituminous roofing systems using membranes
that are adhered by heating with a torch and melting asphalt back coating instead of
mopping hot asphalt for adhesion
\A Well ventilated work area - ANS-- the workers should wear flame resistant gloves
and aprons, skull caps, helmets and goggles and safety shoes
-clothing with pockets or cuffs should not be worn while working
-sparks or slag might catch in the cuffs or pockets
-
\Acetylene should never be set above ? - ANS-15 psi as the acetylene will
decompose explosively
\All fire extinguishers installed so that? - ANS-the top of the extinguisher is not more
than 5 ft above the floor and the clearance between the bottom of the extinguisher
and the floor is less than 4in.
-in other words, no fire extinguisher is allowed to put on the floor
\All hot work operations - ANS--owner of the hot work operation areas must
designate a responsible person
-the responsible person must ensure that the hot work is performed in compliance
with the terms and conditions of the permit
-the person should inspect the hot work site prior to issuing the hot work
authorization to ensure that it is a fire safe area
-he/she need to periodically monitor the work as it is performed to ensure no fire
safety hazards
-hot work operations must be conducted under the gerbil supervision of the
responsible person
\Always replace the protective cap - ANS--most gas containers have a protection cap
-LPG containers have a collar
-these devices protect the container control valve from physical damage
-the protective cap is shaped like an inverted cup
-screwed on top of the gas container
- it must be in place when the gas container is not in use
-protective collar is welded onto the top of the container
-the collar extends above the height of the containers control valve
\Annual Fire extinguisher check - ANS-at least annually, all portable fire
extinguishers must be checked by a W-96 C of F holder from FDNY approved
company
-after each annual inspection W-96 C o F holder will replace the PFE tag
-the information of the annual inspection record must be indicated on the new PFE
tag
\Any single CNG container must not exceed... - ANS-381 SCF
\Any single standard LPG must not exceed... - ANS-100 lbs in weight
\At a construction site and torch-applied roofing system operation... - ANS-every
torch operator must also have a person performing fire watch by a F-60 fire guard
-EXCEPTION... the single fire guard may be designated to conduct a fire watch for
more than one torch operation on the same floor or level if each torch operation is
, not more than 50 feet from the fire guard, as measured by the actual path of travel,
and the field of view of such fire guard encompasses all of the horizontal fire
exposures of such torch operations
\Avoid oil or grease - ANS--containers, valve, regulators, hose and other apparatus
and fittings for oxygen must kept free of oil or grease
-oxygen containers, regulators must not be handled with oily hands, oily gloves, or
greasy tools or equipment
-the oil and grease are more likely to ignite in the presence of oxygen
-oxygen intensifies the burning of other materials
-mixture of pressurized oxygen and oil or grease may cause an explosion
\Away from temperature and physical damage - ANS--all gas containers and the
related equipment must be protected from extreme temperature and physical
damage
-high temperature can cause the pressure inside the container to increase to a
dangerous level (125 degrees F)
\Backfire (common problems occur with torch operations) - ANS--this occurs when
the flame on the torch goes out unexpectedly.
-loud snap or pop may occur when the flame goes out
-sometimes the flame will quickly relight
-this happens when the working surface area is hot enough to reignite the flame
\Before hot work is authorized and at least once per day while authorization is in
effect.... - ANS-the hot work area shall be inspected by the responsible person to
ensure that it is a fire safe area
\Blowtorch (air fuel) torch or single tank torch - ANS--a propane torch is an example
of a blowtorch, commonly used in torch-applied roof system
-to provide enough oxygen for the torch to burn the fuel cleanly, the system mixes in
air from the surrounding environment prior to ignition and while the torch is running
-a container holds the fuel, while a tube carries it up to the nozzle
-a valve near the nozzle lets in the air as needed
\Both Oxy-fuel and Air Fuel torch... - ANS--both gas containers have control valves
on the top of the container
-the valves control the discharge of gas from the containers
-gas containers also have a protective cap or protective collar
-the protective collar is always located on top of the LPG container
-the caps should be screwed on over the valve when the cylinders are not in use
-these caps.collars prevent the valves from being damaged
-the oxygen is stored at pressures up to 2200 psi
-it has a safety disk installed in the control valve connection of the oxygen container
-this disk will burst if the oxygen pressure in the cylinder becomes too great
-this allows the oxygen to escape into the air and events an explosion
-the pressure is likely to change if the cylinder becomes hot
\Brazing and Soldering - ANS--similar to welding in that both the base metal and the
filler metals are heated to melting and then solidify to form a joint
-soldering and brazing temps are typically 840 degrees F
_________ processes often include oxygen and fuel gas - ANS-welding and cutting
\25 feet rule for other hot work operation - ANS-all other hot work operations shall be
conducted at least 25 feet from combustible materials and combustible waste shall
be provided with appropriate shielding to prevent sparks, slag, or heat from igniting
exposed combustibles
\35 feet rule for cutting and welding operation - ANS-hot work operations involving
cutting or welding shall be conducted at least 35 feet from combustible materials and
combustible waste shall be provided with appropriate shielding to prevent sparks,
slag, or heat from igniting exposed combustibles
\A portable fire extinguisher with at least 2-A:20--B:C rating... - ANS-must be readily
accessible within 30 feet of the location where hot work is performed and where the
fire guards are positioned
-in case of fire, 911 must be called
\A pre-hot work check must verify the following - ANS-1-the hot work equip. is in
good working order
2-the hot work area is clear of combustibles and flammable solids
(35 feet rule and 25 feet rule)
3-exposed construction is of noncombustible materials, or if combustible, is
protected
4-openings are protected
5-hot work area floors are clear of combustible waste accumulation
6-fire watch personnel, where required, are assigned
7-approved actions have been taken to prevent accidental activation of fire
extinguishing systems and detection equipment (sprinkler protection and fire
detection systems)
8-portable fire extinguishers and fire hoses (where provided) are operable and
available
9-all persons performing hot work possess certificates of fitness, where such
certificates are required
10-all persons performing hot work requiring a permit possess a site-specific permit
or citywide permit, authorizing such work
\A sign explaining safe handling procedures for LPG should be posted near all LPG
appliances. This sign should indicate the following: - ANS--how to connect all
regulators, manifolds, and hoses to containers and appliances
-how to detect LPG leaks safely
-how to start up and shut down the appliance and related equipment
-the names, address, and telephone number of a local supplier
-emergency number; 911
,\A Torch-applied roof system - ANS-Bituminous roofing systems using membranes
that are adhered by heating with a torch and melting asphalt back coating instead of
mopping hot asphalt for adhesion
\A Well ventilated work area - ANS-- the workers should wear flame resistant gloves
and aprons, skull caps, helmets and goggles and safety shoes
-clothing with pockets or cuffs should not be worn while working
-sparks or slag might catch in the cuffs or pockets
-
\Acetylene should never be set above ? - ANS-15 psi as the acetylene will
decompose explosively
\All fire extinguishers installed so that? - ANS-the top of the extinguisher is not more
than 5 ft above the floor and the clearance between the bottom of the extinguisher
and the floor is less than 4in.
-in other words, no fire extinguisher is allowed to put on the floor
\All hot work operations - ANS--owner of the hot work operation areas must
designate a responsible person
-the responsible person must ensure that the hot work is performed in compliance
with the terms and conditions of the permit
-the person should inspect the hot work site prior to issuing the hot work
authorization to ensure that it is a fire safe area
-he/she need to periodically monitor the work as it is performed to ensure no fire
safety hazards
-hot work operations must be conducted under the gerbil supervision of the
responsible person
\Always replace the protective cap - ANS--most gas containers have a protection cap
-LPG containers have a collar
-these devices protect the container control valve from physical damage
-the protective cap is shaped like an inverted cup
-screwed on top of the gas container
- it must be in place when the gas container is not in use
-protective collar is welded onto the top of the container
-the collar extends above the height of the containers control valve
\Annual Fire extinguisher check - ANS-at least annually, all portable fire
extinguishers must be checked by a W-96 C of F holder from FDNY approved
company
-after each annual inspection W-96 C o F holder will replace the PFE tag
-the information of the annual inspection record must be indicated on the new PFE
tag
\Any single CNG container must not exceed... - ANS-381 SCF
\Any single standard LPG must not exceed... - ANS-100 lbs in weight
\At a construction site and torch-applied roofing system operation... - ANS-every
torch operator must also have a person performing fire watch by a F-60 fire guard
-EXCEPTION... the single fire guard may be designated to conduct a fire watch for
more than one torch operation on the same floor or level if each torch operation is
, not more than 50 feet from the fire guard, as measured by the actual path of travel,
and the field of view of such fire guard encompasses all of the horizontal fire
exposures of such torch operations
\Avoid oil or grease - ANS--containers, valve, regulators, hose and other apparatus
and fittings for oxygen must kept free of oil or grease
-oxygen containers, regulators must not be handled with oily hands, oily gloves, or
greasy tools or equipment
-the oil and grease are more likely to ignite in the presence of oxygen
-oxygen intensifies the burning of other materials
-mixture of pressurized oxygen and oil or grease may cause an explosion
\Away from temperature and physical damage - ANS--all gas containers and the
related equipment must be protected from extreme temperature and physical
damage
-high temperature can cause the pressure inside the container to increase to a
dangerous level (125 degrees F)
\Backfire (common problems occur with torch operations) - ANS--this occurs when
the flame on the torch goes out unexpectedly.
-loud snap or pop may occur when the flame goes out
-sometimes the flame will quickly relight
-this happens when the working surface area is hot enough to reignite the flame
\Before hot work is authorized and at least once per day while authorization is in
effect.... - ANS-the hot work area shall be inspected by the responsible person to
ensure that it is a fire safe area
\Blowtorch (air fuel) torch or single tank torch - ANS--a propane torch is an example
of a blowtorch, commonly used in torch-applied roof system
-to provide enough oxygen for the torch to burn the fuel cleanly, the system mixes in
air from the surrounding environment prior to ignition and while the torch is running
-a container holds the fuel, while a tube carries it up to the nozzle
-a valve near the nozzle lets in the air as needed
\Both Oxy-fuel and Air Fuel torch... - ANS--both gas containers have control valves
on the top of the container
-the valves control the discharge of gas from the containers
-gas containers also have a protective cap or protective collar
-the protective collar is always located on top of the LPG container
-the caps should be screwed on over the valve when the cylinders are not in use
-these caps.collars prevent the valves from being damaged
-the oxygen is stored at pressures up to 2200 psi
-it has a safety disk installed in the control valve connection of the oxygen container
-this disk will burst if the oxygen pressure in the cylinder becomes too great
-this allows the oxygen to escape into the air and events an explosion
-the pressure is likely to change if the cylinder becomes hot
\Brazing and Soldering - ANS--similar to welding in that both the base metal and the
filler metals are heated to melting and then solidify to form a joint
-soldering and brazing temps are typically 840 degrees F
