TS 12664-2

TS 12664-2 is a service standard covering the general rules for workplaces where road vehicles are converted to run on compressed natural gas (CNG). Its focus is the operating arrangement of the conversion facility, its physical characteristics, the qualifications of personnel, and the equipment needed for service activities.

Technical and organisational framework for conversion workplaces

In practical terms, the purpose of this type of workplace is to carry out vehicle fuel-system conversion in a controlled, orderly, and traceable setting. In general technical context, CNG systems combine components such as gas storage elements, pressurised lines, valves, regulators, and engine-feed hardware. That is why facility layout, staff competence, and service equipment are treated as complementary parts of a safe and workable conversion environment.

Main subjects covered by the standard

• General rules for management
• Physical characteristics and layout
• Personnel characteristics and qualifications
• Equipment required for service operations
• Workplace organisation for CNG conversion

The scope is limited to workplaces that convert road-vehicle fuel systems for CNG use; it is not a broad product standard for vehicles themselves, the chemical properties of the fuel, or the detailed design of each conversion kit component. For that reason, the document serves as a practical reference for understanding the baseline arrangement of facilities that provide CNG conversion services.