Gas Cylinders
3 years ago Fashion Buffalo 1.1K views Reference: 28600
Location: Buffalo
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Definition/Introduction
A gas cylinder is a containment apparatus that will store a gaseous compound under pressure for use in medical settings. The physical form of the stored compound can be gas and/or liquid, with the ultimate output from the apparatus being gaseous. Gas Disposable Cylinders allow for portable and safe storage of compounds needed in a medical setting. The sizing of gas cylinders has been attributed to a nationally recognized letter, with the more commonly used medical sizes listed below. Gas cylinders are labeled from A to M, with increasing volume as the letters of the alphabet proceeds. E sized cylinders are the most commonly used size in medical settings. E cylinders have a service pressure of 1900 psi, but may be filled up to 10% more to 2200 psi. Higher filling pressure allows for expansion at temperatures greater than 70 degrees Fahrenheit.
Issues of Concern
Pressure Release Device
The release of pressurized gas can be hazardous, and extreme caution should be exercised. Gas pressure levels should be reduced from stored high pressure to a workable, usable level. A pressure regulator should be used in this situation and any time contents are being removed or used from the cylinder. Do not tamper with pressure release devices. Do not use any Heluim Gas Cylinders with visibly defective pressure release devices. Pressure release devices and gas outlets should never be pointed in any direction that could cause harm.
While attached to an anesthesia machine, the cylinder valves should be in the off position while not in use. This is to prevent leakage and so that the provider will be notified via an alarm of failure of the pipeline supply of gas. If the cylinder were to be left open and a pipeline gas supply failure occurred, the anesthesia machine would consume the oxygen in the cylinder, and the provider would not be notified until the cylinder was depleted.
Safe Usage
A Refrigerant Gas Cylinder should be inspected for malfunctions and defects before use. Full cylinders are usually placed with a tamper-evident seal. This is generally a tear-off seal on the outlet of the valve and is removed before use. Proper inspection of a cylinder includes the outlet, pin index safety system, and especially the pressure relief device. The valve outlet should be clean before use. Only use cylinders marked with DOT (Department of Transportation) or ICC (Interstate Commerce Commission). In Canada, cylinders may be marked with BTC (Board of Transportation Commissioners) or CTC (Canadian Transport Commission). A cylinder should be connected to a regulator to bring the compressed, stored pressure down to a working, usable pressure. Inspect the regulator for signs of damage or foreign materials.
Safe Storage and Transportation
Adhesive Foam Cylinders must be stored upright and secured using a rack, strap, or chain to minimize the chance of falling over. Cylinders should be transported using a cart or carrier. Never drop or hit cylinders, and never drag, roll or slide cylinders, even for a short distance. Only qualified personnel should refill cylinders. While using cylinders, avoid flammable substances, smoking, open flame, or any other incendiary sources. Cylinders should be stored in a dry, cool, well-ventilated area away from exposure to weather. Cylinders should be stored at temperatures less than 125 degrees Fahrenheit/52 degrees Centigrade.
