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.

25. The expert from AEGPL introduced ECE/TRANS/WP.29/GRSG/2016/15 which proposes to insert new safety provisions into UN Regulation No. 67 on Liquefied Petroleum Gas (LPG) systems having hydraulic interconnections with the petrol or diesel fuelling system through which inter-flows of fuels might occur. The expert from Germany objected to the adoption of the proposal as safety risks (overfill of tank) still remain, particularly, since a small amount of flow of petrol into the LPG tank was still possible. The expert from the United Kingdom underlined the need to cross-check all references of paragraphs in the proposal. GRSG agreed to have a final review of the proposal at its next session in April 2017 on the basis of a revised document to be submitted by AEGPL.

20. Referring to ECE/TRANS/WP.29/GRSG/2016/15, the expert from AEGPL recalled the purpose of his proposal to insert new safety provisions into UN Regulation No. 67 on Liquefied Petroleum Gas (LPG) systems having hydraulic interconnections with the petrol or diesel fuelling system through which inter-flows of fuels might occur. He confirmed that he had received in the meantime valuable feedback from a number of GRSG experts. He volunteered to prepare a revised proposal for consideration at the next session.

31. The expert from AEGPL presented ECE/TRANS/WP.29/GRSG/2017/26 proposing to insert new safety provisions into UN Regulation No. 67 on LPG systems that have hydraulic interconnections with the petrol or diesel fuelling system through which inter-flows of fuels may occur. GRSG adopted the proposal, as amended below, and requested the secretariat to submit it to WP.29 and AC.1 as draft Supplement 15 to the 01 series of amendments to UN Regulation No. 67 for consideration at their March 2018 sessions.

New paragraph 2.22., replace “Interconnected LPG-system” by “Interconnected LPG-system (ICS)”.