CHART ULTRADOSER 500S, Руководство пользователя

Страница: 6 / 43

www.chartdosers.com PN 15920 Page 6 of 43
WARNING! Accidental contact of liquid gases with skin or eyes may cause a freezing injury similar
to a burn.
Handle liquid so that it will not splash or spill. Protect your eyes and cover skin where the possibility of contact
with liquid, cold pipes and equipment, or cold gas exists. Safety goggles or a face shield should be worn if
liquid ejection or splashing may occur or cold gas may exit forcefully from equipment. Clean, insulated gloves
that can be easily removed and long sleeves are recommended for arm and hand protection. Cuff less trousers
should be worn over the shoes to shed spilled liquid.
Safety Bulletin
Portions of the following information are extracted from Safety Bulletin SB-2 from the Compressed Gas
Association, Inc. (CGA). For the full text of Safety Bulletin SB-2 and for more information about oxygen
atmospheres, refer to Safety Bulletin SB-2 from the Compressed Gas Association, Inc. (CGA) at
www.cganet.com. Additional information on nitrogen and liquid cylinders is available in CGA Pamphlet P-9.
Write to the Compressed Gas Association, Inc., 1235 Jefferson Davis Highway, Arlington, VA 22202 or visit
their website at www.cganet.com.
Oxygen Deficient Atmospheres
The normal oxygen content of air is approximately 21%. Depletion of oxygen content in air, either by
combustion or by displacement with inert gas, is a potential hazard. Users should exercise suitable precautions.
One aspect of this possible hazard is the response of humans when exposed to an atmosphere containing only 8
to 12% oxygen. In this environment unconsciousness can be immediate with virtually no warning.
When the oxygen content of air is reduced to approximately 15 or 16%, the flame of ordinary combustible
materials, including those commonly used as fuel for heat or light, may be extinguished. Somewhat below this
concentration, an individual breathing the air is mentally incapable of diagnosing the situation. The onset of
symptoms such as sleepiness, fatigue, lassitude, loss of coordination, errors in judgment and confusion can be
masked by a state of "euphoria," leaving the victim with a false sense of security and well being.
Human exposure to atmosphere containing 12% or less oxygen leads to rapid unconsciousness.
Unconsciousness can occur so rapidly that the user is rendered helpless. This can occur if the condition is
reached by immediate change of environment, or through the gradual depletion of oxygen.
Most individuals working in or around oxygen deficient atmospheres rely on the "buddy system" for protection
- obviously, the "buddy" is equally susceptible to asphyxiation if he or she enters the area to assist an
unconscious partner unless equipped with a portable air supply. Best protection is obtainable by equipping all
individuals with a portable supply of respiratory air. Lifelines are acceptable only if the area is essentially free
of obstructions and individuals can assist one another without constraint.
If oxygen deficient atmosphere is suspected or known to exist:
1. Use the "buddy system." Use more than one "buddy" if necessary to move a fellow worker in an
emergency.
2. Both the worker and "buddy" should be equipped with self-contained or airline breathing equipment.