Reference Clauses of the Act : Arts. 15, 16, and 17-2
It means putting high pressure gas into a state such as the following and can be said to have a wider meaning than storage in a socially accepted idea.
(1) When filling a container with high pressure gas
(i) Leaving it without connecting its container with pipes (e.g. those for filling and consumption). In that case, high pressure gas in the process of transportation (transport) is excluded, and high pressure gas in a container fixed to or loaded on a vehicle or the like (except for inert gas for fire extinguishing and high pressure gas carried on a fire engine, emergency vehicle, or the like) should be deemed as being stored when the vehicle is in a state of being parked or stopping long hours beyond the normal limits (set at 2 hours by the Circular Notice as a rough standard). However, pursuant to Article 18, item (ii), e of the General High Pressure Gas Safety Ordinance and Article 19, item (ii), a of the Liquefied Petroleum Gas Safety Ordinance, leaving high pressure gas in such a state is prohibited at places other than those permitted as Class 1 Storage Places and those notified as Class 2 Storage Places;
(ii) regarding gas in the stage of producing high pressure gas whose container connected with pipes for filling, leaving it in that state beyond the normal limits after filling; and
(iii) regarding high pressure gas whose container connected with pipes for consumption, leaving it in that state beyond the normal limits without being consumed, not to mention while being consumed.
(2) When filling a storage vessel/storage tank with high pressure gas:
(i) gas in the stage of producing high pressure gas:
a. being in a state before the gas is sent out as an end product (limited to high pressure gas); or
b. being in a state before the gas is sent to the next process (often treated as “storage relating to production”);
(ii) being in a state from its acceptance to the completion of its sending out in the stage of distribution; or
(iii) being in a state from its acceptance to the completion of its being consumed in the stage of consumption.
(3) When filling a receptacle other than a container or storage vessel/storage tank (devices) with high pressure gas:
The provisions of item (1) also apply to this case.
(4) When filling refrigeration equipment with high pressure gas:
It means the case where, regarding refrigeration equipment with a refrigerating capacity of not less than 20 tons (or 50 tons when carbon dioxide, fluorocarbon, or ammonia is used as refrigerant gas) per diem, such refrigeration equipment filled with refrigerant gas is put at a store or in a warehouse and is not provided for use in production. Specifically, air conditioners in storage can be given as an example.
Moreover, when the volume of a gas is not more than 0.15 m3 (which is equivalent to 1.5 kg of the gas as it is deemed that a mass of 10 kg of a gas has a volume of 1 m3 when a gas to be stored is a liquefied gas), regulations on storage are not imposed on that gas.
ref. Class 1 Storage Place and Class 2 Storage Place