Compressed Gases And Cylinders - Agilent Technologies AA Series User Manual

Safety Practices and Hazards

Compressed Gases and Cylinders

All compressed gases (other than air) can create a hazard if they leak
into the atmosphere. Even small leaks in gas supply systems can be
dangerous. Any leak (except that of air) can an explosion hazard, a
fire hazard, or result in an oxygen–deficient atmosphere. Such
hazards can cause death, serious injury, asphyxiation, anesthetic
effects, and serious damage to equipment and property.
Cylinders must be stored and handled strictly in accordance with
local safety codes and regulations. Cylinders must be used and stored
only in a vertical position. Secure all cylinders to an immovable
structure or a properly constructed cylinder stand. The area in which
cylinders are stored must be adequately ventilated to prevent toxic or
explosive accumulations. Move cylinders only on a properly
constructed trolley.
Keep cylinders cool. This rule applies to every cylinder of
compressed gas. Cylinders have pressure relief devices that release
the contents of the cylinder if the temperature exceeds 52 °C
(125 °F).
Ensure that all cylinders are clearly labeled so that there can be no
doubt about the contents. If the cylinder label is not legible, do not
use the cylinder—return it to your supplier. Always ensure that you
have the right cylinder before connecting the cylinder to the
instrument.
If air is supplied from a compressor, all moisture must be extracted
from the air before it is supplied to the gas control module. Moisture
can affect the internal components of the gas control system and
create a potentially hazardous situation.
Use only approved regulators and hose connectors.
Never attempt to refill cylinders.
Remember that for cylinder connections, left-hand thread fittings are
used for fuel; right-hand thread fittings are used for support gases.
When your analytical program is complete, or at the end of the
working day, always ensure that all gas supplies are turned off at the
cylinders.
10 Agilent 240/280 Series AA User's Guide