UNI EN 12979 : 2004

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviated terms
5 Installation requirements
  5.1 General requirements
  5.2 Connections to LPG-system
  5.3 LPG identification mark for M2 and M3 category vehicles
  5.4 Changes to the vehicle structure
  5.5 Container installation
  5.6 Installation of more than one container
  5.7 Components on or in the container
       5.7.1 General requirements
       5.7.2 Remote-controlled service valve with excess flow
             valve on the container
       5.7.3 Pressure relief valve
       5.7.4 Filling unit
       5.7.5 80% stop valve
       5.7.6 Level indicator
       5.7.7 Gas-tight housing
  5.8 Gas pipes and hoses
  5.9 Gas connections between components of the LPG-system
  5.10 Remote-controlled shut-off valve
  5.11 Vehicle connector
  5.12 Electrical installation
  5.13 Fuel selection system
  5.14 Pressure relief device
  5.15 Installation manual
       5.15.1 General
       5.15.2. Contents of the installation manual
6 Markings in case of retrofit installation
Annex A (normative) Definitions of vehicle categories
        (extract from Directive 70/156)
A.1 International classification of vehicle categories
A.2 Load and checking conditions
Annex B (normative) Container fixing requirements up to a capacity
        of 150 litres
B.1 General requirements
B.2 Container frame
Annex C (normative) Arrangement of approval markings
C.1 Type approval marking
C.2 International country numbers
Annex D (normative) Provisions regarding the identification
        for M2 and M3 category vehicles
Annex E (normative) Provisions regarding the identification
        of the service coupling
Annex F (informative) Installation of more than one container
Bibliography

Specifies the requirements for the installation of automotive LPG components that comply with prEN 12805 and prEN 12806. Does not cover type approval of a LPG motor vehicle.