Safety in Welding, Cutting, and Allied Processes

ANSI Z49.1:1999
10.8.1.9 Damaged Cylinders. Cylinders evidencing
severe damage, corrosion, or fire exposure shall not
be used.
10.8.2 Cylinder Storage
10.8.2.1 Protection. Cylinders shall be stored where
they will not be exposed to physical damage, tampering,
or subject to temperatures which would raise the contents
above the limits of 10.8.1.8.
Cylinders shall be stored away from elevators, stairs,
or gangways in assigned places where cylinders will not
be knocked over or damaged by passing or falling objects.
Cylinders shall be secured in storage to prevent
falling.
10.8.2.2 Cylinders Separated from Combustibles.
Cylinders in storage shall be separated from flammable
and combustible liquids and from easily ignited materials
such as wood, paper, packaging materials, oil, and grease
by at least 20 feet (6.1 meters), or by a noncombustible
barrier at least 5 feet (1.6 meters) high having a fire resistance
of at least one-half hour.
10.8.2.3 Oxygen Separated from Fuel Gas. Oxygen
cylinders in storage shall additionally be separated
from fuel gas cylinders, or from reserve stocks of calcium
carbide, by a distance or barrier as described in 10.8.2.2.
10.8.2.4 Oxygen in Acetylene Generator Buildings.
Oxygen cylinders stored in outside acetylene generator
houses shall be separated from the generator or carbide
storage rooms by a noncombustible partition having
a fire resistance of at least one hour. This partition shall be
without openings and shall be gas-tight.
Oxygen shall not be stored inside acetylene generator
rooms.
10.8.2.5 Fuel Gas Cylinders Upright. Acetylene
and liquefied gas cylinders shall be used valve end up.
10.8.2.6 Fuel Gas Storage Limits. Fuel gas
storage limits shall be in accordance with ANSI/NFPA
51, Standard for the Design and Installation of Oxygen-
Fuel Gas Systems for Welding, Cutting, and Allied
Processes.
10.8.3 Cylinder Handling
10.8.3.1 Rough Handling. Cylinders shall not be
dropped, struck, or permitted to strike objects violently in
a manner which may damage the cylinder, valve, or safety
device.
10.8.3.2 Pry Bars. Bars shall not be used under
valves or valve protection caps to pry cylinders loose when
frozen to the ground or otherwise fixed.
10.8.3.3 Rollers or Supports. Cylinders shall never
be used as rollers or supports, whether full or empty.
E10.8.2.1 Check for overhead combustibles such as
overhead lines and piping, suspended ceiling materials,
etc., when considering storage location.
E10.8.2.5 This prevents liquid flow into hoses and
regulators.
E10.8.3.2 The use of warm (not boiling) water is
recommended.
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