Issues related to the management of gas cylinders in analysis laboratories

For easy storage and transportation, flammable gases such as hydrogen, carbon monoxide, acetylene, liquefied petroleum gas, and chlorine can be compressed under pressure and stored in steel cylinders. Such storage cylinders are pressure vessels with very high pressures inside; in some cases, the pressure can reach dozens or even hundreds of kilograms per square centimeter. If an explosion does occur, it would be equivalent to the power of several hundred pounds of bombs. The gases released when flammable and explosive cylinders explode can undergo a chemical explosion when exposed to fire, resulting in severe damage. Therefore, when storing cylinders containing flammable and explosive gases, the following five fire and explosion prevention safety requirements must be observed: (1) Heat exposure is strictly prohibited. Gas cylinders must not be exposed to direct sunlight or placed near other heat sources; they should also maintain a certain safety distance from open flames, with effective isolation measures in place. Warehouses should be kept well-ventilated. When left outdoors, temporary shading structures made of non-flammable materials should be erected; if necessary, the roof can be misted with water to lower the ambient temperature. If gas cylinders are present at the location of a fire, priority should be given to removing them first, to prevent them from expanding due to heat and exploding, which could exacerbate the fire or cause injuries.   (2) The cylinder valves should be tightened to prevent leakage.   (3) Steel cylinders that are contradictory to each other must not be stored together. For example, hydrogen cylinders and chlorine cylinders, hydrogen cylinders and oxygen cylinders, liquid chlorine cylinders and liquid ammonia cylinders, etc., must not be stored together ； Otherwise, combustion or explosion may occur under light and other conditions due to leakage from each one.   (4) Put on and tighten the bottle cap. A bottle cap is a device that protects the bottle valve. Once the bottle valve breaks, gas will escape at high speed. If the oxygen cylinder is coated with grease, intense oxidation occurs as oxygen escapes at high speed, leading to combustion. When other flammable gases escape at high speeds, static discharge can also occur, leading to fires or explosions.   (5) Compressed gas cylinders have clear external markings; when using them, ensure that the gas inside matches the markings on the outside. **The specified paint color standards for gas cylinders are: sky blue for oxygen cylinders, dark green for hydrogen cylinders, black for nitrogen cylinders, gray for propane cylinders, grass green for chlorine cylinders, and white for acetylene cylinders.   (6) Areas where flammable and explosive gas cylinders are stored should be equipped with a sufficient number of small fire extinguishing devices, depending on the quantity of cylinders present.

Thank you for your kind help! Could you provide the relevant standards and regulations for these measures? Please let those who know about it give some advice: handshake

Also: 1. What are the regulations regarding the distance between the storage location of the gas cylinders used for analysis and the point where they are used (the analysis laboratory)? 2. What are the limitations on the number of gas cylinders stored for analysis? 3. What conditions are required for the storage location? What auxiliary facilities should be installed? How are standards established? Looking forward to the enthusiastic help from fellow sailors: handshake

There are tons of options available online; summarizing them can be quite useful

Could you help me organize this according to the questions? High reward for assistance: handshake