Placement of gas cylinders

- Feb 21, 2019-

Gas cylinders are special pressure-resistant cylinders that store compressed gas. When in use, the gas is released in a controlled manner through a pressure reducing valve (barometer). Since the internal pressure of the cylinder is very large (some up to 15 MPa), and some gases are flammable or toxic, care should be taken when using the cylinder.

1. Compressed gas cylinders should be used upright, and must be fixed by frame or fence.

2. Compressed gas cylinders should be kept away from heat sources and fires, and should be placed in a cool and ventilated place to prevent sunlight exposure. It is strictly forbidden to be heated; flammable gas cylinders must be stored separately from oxygen cylinders; no flammable materials should be stacked around, and flammable gases are strictly prohibited from contacting fire.

Third, it is forbidden to move and knock the cylinder at will, and it should be handled lightly when allowed to move.

4. When using, pay attention to check the airtightness of the cylinder and the connecting gas path to ensure that the gas does not leak. When using the gas in the cylinder, use a pressure reducing valve (barometer). Barometers for various gases must not be mixed to prevent explosions.

5. After use, close the valve as required, and the main valve should be tightened and not leaked. Develop the habit of checking cylinders when leaving the lab.

6. Do not use up all the gas in the cylinder. Always keep the residual pressure above 0.05MPa (pressure gauge pressure). A flammable gas such as acetylene should have a residual 0.2-0.3 MPa.

7. In order to avoid confusion with various gases, use a specific color on the outside of the cylinder to distinguish it, and write the name of the gas in the bottle on the bottle.

8. Never put oil or other flammable organic matter on the cylinder (especially the valve and pressure reducing valve). Do not block with cotton or hemp to prevent accidents caused by burning.

Nine, all kinds of cylinders must be inspected regularly according to national regulations. During the use, the condition of the cylinders must be observed. If serious corrosion or other serious damage is found, it should be stopped and reported in advance.

There are many experiments in the testing laboratory that require the use of gas cylinders. There are several situations:

(1) The cylinder is placed in an explosion-proof cabinet in the same laboratory of the testing equipment;

(2) The cylinder is placed in the same laboratory of the test instrument and fixed by chains or other means;

(3) The cylinder is placed in a certain place in the building, and the pipeline is connected to the laboratory;

(4) The cylinder is placed in an ordinary house outside, and so on.

How to put it more reasonable or suitable?

According to the specific conditions of different types of gases:

1. Inert gases such as nitrogen, argon, etc. can be placed in (1), (2), (3), (4)

2. Flammable and explosive gases such as acetylene and hydrogen should be equipped with explosion-proof steel cylinder cabinets, moved to the gas cylinders, and have a safety protection distance, and take certain safety protection measures such as (3), (4)