It is also acceptable to have a base container or manifold of containers assigned to each resident in a multi-bed room. It is acceptable to have one base container or a manifold of containers and one small (2-liter) portable container assigned to the same resident concurrently in the bedroom. What is considered storage and what is considered use?Ī single base container, or multiple manifolded containers, of liquid oxygen that is assigned to a specific resident, is providing oxygen to the resident through a physical connection, or is ready to provide oxygen to the resident through a physical connection is considered in use in that resident's bedroom. The large volume of gaseous oxygen resulting from the vaporization of liquid oxygen has the potential, if trapped in a closed circuit not adequately protected by pressure relief devices, to generate gas pressures high enough to cause explosive rupture of containers, transfer lines, piping, and other system components. One volume of liquid oxygen at standard atmospheric pressure when warmed will expand significantly and when vaporized will produce approximately 860 volumes of gaseous oxygen at ambient temperatures.Skin will stick to cold surfaces at cryogenic temperatures, causing additional injury. If permitted to contact skin or non-protective clothing, cold surfaces present on liquid oxygen systems such as valves, lines or couplings can cause severe frostbite or cryogenic burns. Liquid oxygen boils at –297.3 degrees Fahrenheit and is extremely cold. ![]() Here are two other points to be aware of relating to the temperature and vaporization hazards: These can include electric wheelchairs, electric razors, electric bed controls, hair dryers, remote television controls, television sets, radio and stereo equipment, computers, air conditioners, telephone handsets and fans. Unfortunately, there are many items in a typical patient/resident room in health care occupancies that can create a source of ignition if introduced into an oxygen-enriched atmosphere.It is important to keep liquid oxygen separated from sources of ignition. A hazard can also exist if the oxygen equipment becomes contaminated with oil or grease.Absorbent materials such as clothing or bedding, for example, may become saturated with oxygen when exposed to oxygen or an oxygen-enriched atmosphere and more readily ignite in the presence of a source of ignition. Examples of these types of materials that may be found on or near patients/residents in health care facilities can include hair oils, oil-based lubricants, skin lotions, facial tissues, clothing, bed linens, alcohols, acetone and some plastics. Materials not normally considered to be combustible may be so in an oxygen-enriched atmosphere. In an oxygen-enriched atmosphere, materials that are combustible and flammable in air ignite more easily, burn more vigorously and produce a higher temperature when burning.This venting may create an oxygen-enriched atmosphere if the container is stored in a confined space. If the container is tipped over or placed on its side, a larger amount of oxygen will be vented. ![]() When a liquid oxygen container is not used for a period of time, there is a small amount of oxygen vented into the vicinity of the container.
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