40. The expert from Belgium withdrew ECE/TRANS/WP.29/GRSG/2014/28. Recalling the discussion at the previous session of GRSG, the expert from the Netherlands presented ECE/TRANS/WP.29/GRSG/2015/5 (superseding ECE/TRANS/WP.29/GRSG/2014/30) clarifying the provisions of Chapter 18 of the Regulation following the introduction of provisions for the mandatory installation of manual and automatic valves. GRSG noted a number of comments. Following the discussion, GRSG adopted ECE/TRANS/WP.29/GRSG/2015/5, as amended below, and requested the secretariat to submit the adopted proposal to WP.29 and AC.1 for consideration at their November 2015 sessions, as draft Supplement 4 to the 01 series of amendments to UN Regulation No. 110.

Paragraph 18.3.4.8., amend “LNG valve (automatic)” to read “Automatic valve”.

41. The expert from the Netherlands introduced ECE/TRANS/WP.29/GRSG/2015/6 proposing new provisions on a directional discharge of the pressure relief devices for Compressed Natural Gas (CNG) containers. The expert from Germany presented GRSG-108-08 proposing a number of improvements to the proposed text. Following the discussion, GRSG noted a general support on the final proposal as reflected in GRSG-108-08-Rev.2.

42. GRSG adopted ECE/TRANS/WP.29/GRSG/2015/6 as amended by Annex IV to this report. The secretariat was requested to submit the adopted proposal to WP.29 and AC.1 for consideration at their November 2015 sessions, as draft 02 series of amendments to UN Regulation No. 110.

43. The expert from Japan suggested amending UN Regulation No. 110 to improve the safety provisions for CNG and Liquefied Natural Gas (LNG) containers (GRSG-108-11). He expressed his preference to remove all provisions for welded metal cylinders. The expert from the Netherlands preferred to insert a clear provision to exclude such cylinders from the scope of the UN Regulation. The expert from EC stressed the need to also review the marking provisions of cylinders. GRSG welcomed the proposal and agreed to resume consideration of this subject at its next session on the basis of a revised proposal by Japan.

44. The expert from OICA presented GRSG-108-29 on the use of autonomous CNG heaters for the heating of the engines before the entry into service of the vehicle. The document received general support and a number of comments. GRSG agreed to resume consideration of this subject at its next session on the basis of an official document. The expert from OICA volunteered to submit in due time a revised proposal taking into account the comments received.

45. The expert from NGV Global introduced GRSG-108-02-Rev.1 justifying to withdraw from consideration at this time his initial proposal (GRSG-108-02) for the terms of reference to establish a IWG on Natural Gas Vehicles (NGV) to develop an amendment to UN Regulation No.110. GRSG agreed to resume consideration of this subject at one of its next sessions on the basis of a new proposal taking into account new input from the NGV stakeholders.

46. Referring to ECE/TRANS/WP.15/2015/4 currently under discussion in the Working Party on the Transport of Dangerous Goods (WP.15), the expert from Germany questioned the need to set up a common task force of experts of GRSG, WP.29 and WP.15. The proposal did not receive the full support of GRSG. It was agreed that GRSG should, on one hand, focus on the construction of new vehicles as well as on all related type approval issues and, on the other hand, continue close cooperation with the Working Party on the Transport of Dangerous Goods (WP.15) and sharing with the experts all necessary information on vehicle use.