Air Products GASGUARD TE10, Installation, Operation And Maintenance Manual

Page: 34 / 196

GASGUARD
®
TE10 Distribution System Manual
Air Products and Chemicals, Inc. Page 1 - 18
No open flames, smoking, or sparks permitted near oxygen
equipment.
Since many materials will burn in oxygen/oxidizer enriched atmospheres, the best
method in preventing fires is to eliminate sources of ignition. Where this control
equipment is being used or where concentrations of oxygen are greater than 23%,
avoid open flames, sparks, or sources of heat. Never weld on a pressurized line
flowing oxygen or an oxidizer. Make sure signs are posted warning personnel that
oxygen or oxidizers are in use.
Do not substitute oxygen for compressed air.
Substituting oxygen for compressed air is dangerous. Explosions can occur when
oxygen is substituted for air. Chances are the instrument air equipment is not
compatible or cleaned for oxygen service. Oxygen used to clean off equipment or
clothing could come in contact with a source of ignition (spark, flame, or other)
and ignite. In some cases, the elevated oxygen levels could linger even after the
source has been shut off. Never tie into an oxygen system for personal breathing
purposes.
A list of most of the oxidizers used in the GASGUARD system follows:
Chlorine Nitrogen trifluoride
Chlorine trifluoride Nitrous oxide
Fluorine Oxygen
1.9.5 Inert Gas Hazards
High concentrations of nitrogen, helium, or
other inert gases will cause an oxygen deficient
atmosphere in a confined area which can cause
DEATH. All personnel must read and
understand the Material Safety Data Sheet(s)
(MSDS) for the specific gas(es) being used.
Oxygen concentrations of 19.5% or less can greatly increase the hazard of
asphyxiation to personnel. Before working in an area where nitrogen, helium or
other inert gases could be present, check the area with an oxygen monitor to be
sure the oxygen concentration is between 19.5% and 23%. While working in the
area, the oxygen concentration needs to be monitored with a continuous oxygen