TS 12664-1

TS 12664-1 is a standard concerned with the general rules for places that convert road vehicles’ propulsion or fuel systems to operate on liquefied petroleum gas (LPG). The subject is the conversion service itself, not a single vehicle model or a specific conversion kit. In practical terms, it addresses the technical and organisational framework surrounding an LPG retrofit workshop or service location, where the quality of the installation depends on both correct components and disciplined workmanship.

What the LPG conversion context involves

LPG is an automotive fuel stored under pressure and supplied to the engine with dedicated hardware. A road-vehicle LPG conversion typically brings together several linked elements: tank placement, filling interface, piping, pressure regulation/vaporisation, injection or mixer equipment, electrical connections, and leak-tight assembly. Because these functions interact, the conversion site matters as much as the hardware. Proper installation, component compatibility, and final checks all influence how safely and consistently the system can operate in everyday use.

Why general rules matter for service places

• An LPG conversion changes the vehicle’s fuel-delivery architecture, so the work must be matched to the vehicle type and the conversion system used.
• In pressurised gas systems, leak tightness, ventilation, and correct placement are core technical concerns.
• Service-level standards usually support consistency by addressing workshop organisation, personnel competence, equipment use, and pre-delivery checks.
• The phrase ‘general rules’ indicates a focus on the basic operating principles of the conversion place rather than detailed model-specific retrofit instructions.