This agenda item relates to UN R110 CNG/LNG System Components.
Working Party on General Safety | Session 107 | 30 Sep-3 Oct 2014

27. The expert from Japan introduced GRSG-107-09 and GRSG-107-37, informing GRSG about the outcome of a “Study group for CNG cylinders” established in Japan for investigation of safety related issues in UN Regulation No. 110. The expert from EC encouraged discussion on this subject. GRSG agreed to resume discussion on this subject at its May 2015 session, awaiting further information provided by the expert from Japan.

Working Party on General Safety | Session 108 | 4-8 May 2015

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.

Working Party on General Safety | Session 109 | 29 Sep-2 Oct 2015

33. The expert from Japan introduced GRSG-109-08 (superseding ECE/TRANS/WP.29/GRSG/2015/27) proposing to remove from UN Regulation No. 110 the provisions for welded constructions of compressed natural gas (CNG) cylinders or metal liners, including high-strength steel CNG cylinders. The proposal received a number of comments on the need for performance oriented requirements and the transitional provisions. Instead of adopting the proposal as a new 03 series of amendments, GRSG preferred to defer the adoption by WP.29 of the draft 02 series of amendments to UN Regulation No. 110 (currently on the agenda of the November 2015 session of WP.29 as ECE/TRANS/WP.29/2015/90) to its March 2016 session to insert the amendments proposed by Japan. GRSG endorsed the submission of a new consolidated proposal for the 02 series of amendments as reproduced in GRSG-109-22-Rev.1.

34. In this respect, GRSG adopted the proposed text as reproduced in Annex VI to the report. The secretariat was requested to submit the proposal to WP.29 and AC.1 for consideration at their March 2016 sessions, as a new draft 02 series of amendments to UN Regulation No. 110 (superseding ECE/TRANS/WP.29/2015/90).

World Forum for the Harmonization of Vehicle Regulations | Session 167 | 10-13 Nov 2015

[Postponed until June 2016 session in order to integrate the contents with additional provisions under development within the GRSG.]

31. The GRSG chair recalled that GRSG had already adopted at its previous session in May 2015 a new 02 series of amendments proposing provisions on a directional discharge of the pressure relief devices of CNG containers (submitted as ECE/TRANS/WP.29/2015/90 to the November 2015 session of WP.29). He added that GRSG had just adopted another amendment removing the provisions on welded cylinders and raising again the stringency of Regulation No. 110. Instead of adopting that amendment as a further new series of amendments, GRSG had agreed to remove ECE/TRANS/WP.29/2015/90 from the WP.29 agenda in November 2015 and to submit a new draft 02 series of amendments to UN Regulation No. 110, incorporating both proposals (directional discharge and removal of welded cylinders) for consideration at the March 2016 session of WP.29.

61. The consideration of ECE/TRANS/WP.29/2015/90 tabled under agenda item 4.7.9 was deferred to the March 2016 session of WP.29 (see para. 31 above).

Documentation
GRSG-109-08 | Draft amendments to document GRSG/2015/27 (Japan)
GRSG-109-14 | ISO/TC22/SC41: Specific aspects for gaseous fuels (Netherlands and Kiwa)
GRSG-109-22 | Proposal for amendments to the 02 series of amendments to Regulation No. 110
GRSG-109-22/Rev.1 | Proposal for amendments to the 02 series of amendments to Regulation No. 110
GRSG/2015/27 | Proposal for the 02 series of amendments to Regulation No. 110 (Japan)
GRSG/2015/36 | Proposal for amendments to Regulation No. 110 (OICA)