Helium, stored in high-pressure cylinders, is a non-toxic, colourless, odorless and non-flammable gas. When the helium content in the air is too high and the oxygen content is below <19.5%, it can lead to rapid suffocation. Bottled helium cylinders are exposed to high heat and risk physical explosion.

Helium is a colorless, odorless, non-combustible gas with a content of about 5.2 parts per million in air. Chemically inert, usually not bound to other elements or compounds in its state.

Helium is a simple asphyxant. Helium is a non-toxic gas, but it can displace oxygen from the air and cause suffocation. Lack of oxygen can cause serious injury or death.

If the person is in the air with oxygen content below 19.5%, it will cause dizziness, fatigue, nausea, vomiting, excessive saliva, slow reaction, loss of consciousness and even death. If a person is in an air with an oxygen content of 8-10% or less, he/she will quickly lose consciousness and the ability to save himself/herself without warning.

Bottled helium cylinders can rapidly discharge or explode violently when exposed to high temperatures or fire. Most cylinders are designed with pressure relief devices for temperature increases. Due to the action of heat, the pressure in the cylinder will rise, and if the pressure relief device fails, the cylinder will explode.

Bottled helium

High-purity helium should be stored upright in a well-ventilated, safe and weather free place. The storage temperature should not be higher than 125F (52C). There should be no combustible materials in the storage area and away from frequent access and emergency exits. No salt or other corrosive materials are present.

For unused bottled helium, the valve cover and output valve should be well sealed, and the empty bottle and full bottle should be stored separately. Avoid excessive storage and storage for too long. Use a FIFO system and keep good storage records.

For bottled helium use: Never pull, roll or slide the cylinder. Use a suitable trolley to move the container and do not try to pick it up by grabbing the lid of the gas cylinder. Ensure that the cylinder is in a fixed state during the whole process of use.

Safely release gas from the cylinder with a pressure reducing regulator or a separate control valve. Use a check valve to prevent backflow. Do not heat the cylinder to increase pressure and discharge. If the user has difficulty operating the cylinder valve, discontinue use and contact the supplier.

Do not insert tools (wrenches, screwdrivers, crowbars, etc.) into the valve cover. Failure to do so will damage the valve and cause leakage. Use an adjustable wrench to open tight or rusty caps. It is compatible with all ordinary materials. Piping and equipment must be designed to meet pressure requirements.

When using a bottled helium cylinder, the operator should stand perpendicular to the inlet of the cylinder. It is strictly forbidden to strike the gas cylinder during operation, and often check whether there is air leakage phenomenon, pay attention to the pressure gauge reading.

Bottled helium cylinders must be inspected regularly by the quality inspection unit, and cylinders with overdue safety valves are strictly prohibited. The gas cylinder filled with general gas shall be inspected every three years. If serious corrosion or serious damage occurs during use, it shall be inspected in advance.