| Applicable laws and regulation | periodic self-inspection |
| High Oressure gas Safety Act | Manufacturing consumption equipment: At least once a year / detection alarm equipment: At least once a year circuit inspection / At least once a year detection and alarm inspection |
| Article 35-2 | |
| The Regulation on Safety General High Pressure Gas | |
| Article 83 | |
| Related example criteria 23.1.10 (Site in Japanese) | |
High pressure gas production and consumption facilitie are required to undergo a regular self-inspection at least once a year as prescribed by High Pressure Gas Safety Act (the Regulation on Safety of General High Pressure Gas).
The minimum amount of gas produced or consumed that requires periodic self-inspection as described in Article 35-2 of the High Pressure Gas Safety Act is 30 cubic meters regardless of the type of gas.
(Reference: High Pressure Gas Safety Act Article 35-2 and the Regulation on Safety of General High Pressure Gas Article 83)
In addition, detection and alarm equipment for high pressure gas is defined as : issued an alarm by circuit inspection pertaining to the alarm at least once a year and to conduct inspections pertaining to the detection and alarm more than once a year and confirm that it works properly
(Reference: the Regulation on Safety of General High Pressure Gas Related Standards)
High pressure gas is defined as follows by Article 2 of the High Pressure Gas Safety Act.
1）Compressed gas, the pressure (meaning gauge; the same shall apply hereinafter) of which is not less than 1 megapascal at its normal operating temperature and which is currently not less than 1 megapascal, or compressed gas, the pressure of which is not less than 1 megapascal at a temperature of 35 degrees Celsius (except compressed acetylene gas in both cases);
2）Compressed acetylene gas, the pressure of which is not less than 0.2 megapascal at its normal operating temperature and which is currently not less than 0.2 megapascal, or compressed acetylene gas, the pressure of which is not less than 0.2 megapascal at a temperature of 15 degrees Celsius;
3）Liquefied gas, the pressure of which is not less than 0.2 megapascal at its normal operating temperature and which is currently not less than 0.2 megapascal, or liquefied gas, the temperature of which is 35 degrees Celsius or less in the case that the pressure is 0.2 megapascal;or
4）In addition to what is listed in 1-3, liquefied hydrogen cyanide, liquefied methyl bromide and liquefied ethylene oxide whose pressures exceed zero pascal at 35 ℃
In addition, the volume specified by the Ordinance of the Ministry of Economy, Trade and Industry with respect to storage regulations is 0.15 cubic meters (In the case of liquefied gas, the mass of 10 kg is considered to be 1 cubic meter in volume).
（Reference: the Regulation on Safety of General High Pressure Gas Article 19）
Storage of high pressure gas is to be carried out in accordance with the technical standards specified by the Ministry of Economy, Trade and Industry Ordinance, which are described in Article 18 of the Regulation on Safety of General High Pressure Gas.
