What is a qualified CNG cylinder inspection?
Inspections performed by service stations or state agencies may not include a detailed CNG cylinder visual inspection, as outlined in a standard developed by natural gas vehicle industry engineers. Following this standard, a qualified inspector will note cuts, cracks, gouges, abrasions, discoloration, broken fibers, loose brackets, damaged gaskets or isolators, heat damage or other problems and recommend proper action to assure fuel system safety. A qualified inspector must have: • knowledge of the types of containers used in CNG vehicle systems, and damage allowances for each type, and • understanding of inspection requirements, tests, procedures, and • the container manufacturer’s current inspection guidelines readily available. A qualified CNG cylinder inspector also must: • have a minimum of 2 years experience conducting container inspections, or • be supervised by someone with 2 years experience, or • be approved by the container manufacturer, or • be certified as an inspector by
