4.5.49 Oxygen cylinders, cylinder valves, couplings,
ANSI Z-49.1, 10.3.1;
regulators, hoses, and other apparatus shall be kept free
from oil, grease, dirt and other flammable or explosive
CGA P-1, 4.4.1;
substances. These materials shall not be handled with
oily hands or gloves.
188.8.131.52 A jet of oxygen gas shall not be directed at
an oily surface, greasy clothes, etc.
4.5.50 Gauges used for oxygen service shall be marked "Use
ANSI Z49.1, 10.7.4;
4.5.51 Oxygen shall not be used as a substitute for
ANSI Z49.1, 10.3.2
compressed air. For example, it shall not be used in
pneumatic tools, to blow out pipelines, to dust off
clothing or any similar application.
4.5.52 Oxygen regulators shall be drained of oxygen before
ANSI Z49.1, 10.7.5
they are attached to a cylinder or a manifold or before
the cylinder valve is opened.
4.5.53 Oxygen in work areas shall not be allowed to exceed
CGA P-1, 4.4.2
23 percent by volume.
4.5.54 Fuel gas cylinders shall be used valve end up.
ANSI Z49.1, 10.8.2.5;
4.5.55 Where ignition of a flammable gas by static electricity
NFPA 55, 184.108.40.206
is possible, means shall be provided to prevent static
4.5.56 Nothing shall be placed on fuel cylinders while in use
ANSI Z49.1, 10.8.4.9;
that could damage safety devices or interfere with the
quick closing of the valve.
CGA G-1, 220.127.116.11;
4.5.57 Quick opening valves on fuel gas cylinders shall be
ANSI Z49.1, 10.8.4.8;
opened between ¾ and 1 ½ turns unless otherwise
specified by the manufacturer.
CGA G-1, 18.104.22.168;
4.5.58 Withdrawal rates from gas cylinders shall not exceed
ANSI Z49.1, 10.8.4.15