If the carbon dioxide processing capacity of the device is 30 m³ / day or more, a self-inspection is required every year. In addition, if you are a type 1 manufacturer, you need to carry out a safety inspection by the prefectural office.
The safety inspection will be taken one month before and after one year has passed since the day of the previous safety inspection (in the case of the first time, the day of the completion inspection).
Self-inspection includes pressure gauges, thermometers, and safety valve inspections, wall thickness measurements, and airtightness tests. When handling non-corrosive gas, open inspection is performed every 3 years. In the safety inspection, the prefectural office checks the self-inspection report, safety officer’s license, etc., and also witnesses the airtightness test. Since the contents differ depending on the prefecture, it is necessary to confirm the inspection contents in advance before the safety inspection.