Refillable refrigerant cylinders should be inspected at least once every five years. However, it's essential to check them regularly for any signs of damage or leakage, as well as to ensure they are properly labeled and maintained according to local regulations. Additionally, cylinders should be visually inspected before each use to ensure they are safe for operation.
Gas cylinders should be re-tested every 5 to 10 years, depending on the type of gas and the regulations in your specific location. It is important to have cylinders inspected regularly to ensure they are safe for use.
CNG (Compressed Natural Gas) cylinders should be inspected at least every three years for visual and pressure testing, as recommended by the Department of Transportation (DOT) in the United States. Additionally, a thorough inspection should be conducted whenever a cylinder is refilled or after any incident that may have compromised its integrity. Regular maintenance and adherence to manufacturer guidelines are also essential to ensure safety and compliance.
They are inspected at least once a year. Inspections are random - and without warning.
About maybe twice a year
about twice a year
before and after
Very. Dept of weights & measures controls cheating & those that have edibles inspected by Health Dept.
Daily
before use
It depends upon what type of extinguisher it is. Many refillable types must be internally inspected on one-year intervals. Others only after 3, 5 or 6 years. NFPA 1 13.6.9 prescribes timetables for inspection, maintenance and recharging of portable fire extinguishers, for reference, although it is not universally adopted.
Every six months.
Every day