This standard sets the general conditions applicable to new indoor installations or new parts of indoor installations for the use of combustible gas lighter than air, dis ributed by pipes. This standard is applicable without prejudice to exis ing legal provis ons in this area.
NBN D 51-004-1992 history
1992NBN D 51-004-1992 Facilities using gas fuel. Gas is a fuel that is lighter than air and is transported through pipes. special facilities