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The last edit to this post was made by zhengpeichun on 2018-3-14 at 15:57. Safety operating procedures for GC specialty gas cylinders and storage safety requirements – The main purpose of electronic specialty gas cabinets is to ensure the safe transportation of specialty gases； As is well known, one of the main requirements for handling specialty gases is to maintain proper pressure and purity, with the pressure being controlled through pressure regulating valves ； Purity can be achieved by ensuring the high airtightness of the system to prevent external contamination, as well as by filtering out particles from the gas using filters. The second main requirement is safety, and the primary risks associated with handling specialty gas cylinders lie in (1) the cylinder valves not being properly closed before changing the cylinder, or harmful gases remaining in the piping system ； (2) After the bottle was changed, the cylinder connector (pigtail pipe connector) was not properly connected, resulting in gas leakage when the bottle was opened. Next, Wofei Technology will provide a detailed explanation of the safety operating procedures for special gas cylinders as well as the requirements for their safe storage. Safety operating procedures for special gas cylinders: 1. Personnel who are not involved in experiments are strictly prohibited from touching the cylinders and related valves. 2. It is strictly prohibited to strike or impact the device during operation; attention should be paid to the readings on the pressure gauge, and valves and pipelines should be checked regularly to ensure there are no leaks. 3. When replacing it, ensure that the new gas cylinder is clearly and completely labeled; handle it with care during transportation, and only release it once the cylinder is firmly upright. 4. Gas cylinders should be stored in a cool, dry place away from heat sources. The floor on which the cylinders are placed must be level, and the safety caps on the cylinders should be tightened to prevent the valves from turning accidentally. 5. When using a nitrogen cylinder, first open the cylinder valve, then slowly tighten the regulator screw to allow the gas to flow out. First, close the valve on the gas cylinder, release all the gas from the regulator, and then loosen the regulator adjustment screw. Safety requirements for storing special gas cylinders in cabinets: 1. They should be stored in dedicated warehouses, and such warehouses must comply with the relevant provisions of the \"Code for Fire Protection Design of Buildings\"; 2. There should be no sewers or hidden passages in the warehouse, and open flames as well as other heat sources are strictly prohibited. The warehouse must be well-ventilated and dry, with direct sunlight avoided; 3. The maximum temperature inside the warehouse must be controlled, and a storage period must be specified; 4. It is strictly forbidden to use heat sources with a temperature exceeding 40°C to heat the cylinders; 5. The cylinders should be arranged neatly, with their caps properly on. When placed vertically, they must be securely fixed; when placed horizontally, their openings should face in the same direction; 6. The steel stamps, color markings on the cylinders, and the type of gas contained within them must be verified. Cylinders that do not meet safety requirements are not allowed to be stored there; 7. When checking empty cylinders before storage, the gas inside them must not be completely exhausted – a residual pressure must remain. For cylinders containing permanent gases, this residual pressure should be no less than 0.05 Mpa. 8. The shoulder of the gas cylinder indicates the specific date for the next inspection; it can be used until that date, and once it has passed that date, it must be taken to a specialized testing facility for inspection before it can be refilled and used again. It is generally tested once every two years. 9. Empty cylinders and filled cylinders should be stored separately, with clear markings; cylinders containing toxic gases, as well as those whose contents can cause combustion, explosion, or the generation of toxic substances, should be kept in separate areas, with gas protection equipment or fire extinguishing devices available in the vicinity. Special gas cabinets are used primarily to supply special gases such as those that are flammable, explosive, or highly toxic, and they are mainly utilized in emerging industries like semiconductors and LEDs.