25. The expert from AEGPL introduced GRSG-110-13, superseding his proposal ECE/TRANS/WP.29/GRSG/2015/35 and proposing new provisions to prevent a flow of liquefied petroleum gas (LPG) into the petrol or diesel tank, and vice versa. GRSG noted general support on the updated proposal. Following a study reservation by the expert from France, GRSG decided to have a final review of the proposal at its next session in October 2016 and requested the secretariat to circulate GRSG-110-13 with an official symbol.

27. The expert from AEGPL gave a presentation (GRSG-109-15) justifying the insertion into UN Regulation No. 67 of new provisions to prevent a flow of liquefied petroleum gas (LPG) into the petrol or diesel tank, and vice versa (ECE/TRANS/WP.29/GRSG/2015/35). The expert from Spain raised concerns on the possible interpretation of the new provisions and preferred clear test requirements. The experts from France and Sweden endorsed that position. The expert from Germany introduced GRSG-109-12 proposing some improved text to ECE/TRANS/WP.29/GRSG/2015/35. He raised concerns on the possible leakage of the different fuel types and questioned the need to install redundant valves.

28. Following the discussion, the expert from AEGPL introduced GRSG-109-21 superseding ECE/TRANS/WP.29/GRSG/2015/35. The experts from France and Spain raised a study reservation. Thus, GRSG agreed to resume consideration of this subject at its next session on the basis of a revised proposal by AEGPL, taking into account the comments received.