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Extinguishing Lithium-ion ✔Correct Answers-Fire Extinguishers do not work on lithium-ion
batteries fires.Water may not prevent a battery from burning and spreading.
FDNY Permit Permits issued by the FDNY are required for any of the following: ✔Correct
Answers-to conduct hot work using oxygen and a flammable gas, (2) to store, use or handle any
compressed flammable gases (e.g. LPG or CNG or acetylene) in excess of 400 SCF. (3) to store,
use or handle any compressed oxidizing gas (e.g. oxygen) in excess of 504 SCF. (4) to compress a
flammable gas to a pressure exceeding 6 psig.
For LPG, 400 SCF is ✔Correct Answers-approximately 47 lbs
Portable LPG containers that are more than ✔Correct Answers-16.4 oz must not be stored,
handled, or used indoors in the following occupancies (as defined in the Building code):
residential occupancies, factory and industrial occupancies; educational occupancies;
institutional occupancies, except as the commissioner may authorize by rule.
CNG containers with a capacity greater than ____ SCF must NOT ✔Correct Answers-8.7
Any single standard portable LPG container must not exceed ___ lbs in weight ✔Correct
Answers-100
Any single CNG container must not exceed ___ SCF ✔Correct Answers-381
Welding and cutting ✔Correct Answers-Welding involves joining two or more pieces of metal
together to form a single piece. Oxy-acetylene generates the highest temperature which can
reach up to 6,000 ºF
Soldering and brazing ✔Correct Answers-Temperatures are typically 840 ºF. Soldering or
brazing typically involves smaller components to be joined and "softer" metals such as lead, tin
or silver.
Portable LPG containers that are more than ____ must not be stored, handled, or used indoors
in the following occupancies (as defined in the Building code): residential occupancies, factory
and industrial occupancies. ✔Correct Answers-16.4 oz
more than ___ standard size oxygen containers may need a FDNY storage permit. ✔Correct
Answers-2
, Portable LPG containers that are more than ___ and CNG containers with a capacity greater
than ___ must NOT stored, handled, or used indoors in the following occupancies (as defined in
the Building code) ✔Correct Answers-16.4 oz & 8.7 SCF
A 3 site-specific permit is valid for ____ months only. ✔Correct Answers-12
Propane/Butane Canister Torch ✔Correct Answers-A small disposable container of
pressurized propane/butane gas may be used for soldering. The propane container is attached
to a reusable torch. Mostly it comes with two different tips. This arrangement is good for small
jobs where limited heating is required.
Bunsen Burner ✔Correct Answers-The Bunsen burner is attached to a gas jet by a length of
hose. It often uses natural gas or LPG as a fuel gas. The Bunsen burner is used to control the gas.
The gas is ignited as it leaves the Bunsen burner. A small steady flame is produced.
All torch operations shall be performed at a work station with a surface made of, or covered
with, a ✔Correct Answers-noncombustible material, Paper, wood shavings, straw and fabric
are examples of combustible materials.
What should the workers wear? ✔Correct Answers-The workers should wear flame resistant
gloves and aprons or goggles, and safety shoes. Clothing with pockets or cuffs should not be
worn while working. Sparks or pieces of hot metal might catch in the cuffs or pockets.
Frayed Clothing ✔Correct Answers-Frayed clothing is particularly susceptible to ignition and
burning and should NOT be worn when performing hot work
Check for leaks and If any leaks are found ✔Correct Answers-shut the supply valve,
DISCONTINUE USE and contact the supplier/manufacturer and take the system out of service. •
If CNG is used
You should open the gas container valve slowly and allow pressure to stabilize. The acetylene
container valve should be opened by only ____ turn ✔Correct Answers-1/4
The acetylene pressure should never be above ✔Correct Answers-15 psig
What do you light a fuel torch with? ✔Correct Answers-Open the fuel torch valve a very small
amount and light with a spark lighter
If the torch operation is to be discontinued for a period of ___ hour or more, the torch valve
must be closed and the gas supply to the torch also must be completely shut. ✔Correct
Answers-1 hour
Containers, valves, regulators, hose and other apparatus and fittings for oxygen must kept free
of ✔Correct Answers-oil or grease