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).

29. The expert from ISO presented GRSG-109-14 on the progress of work within the ISO working group on refueling connector and fuel components for vehicles propelled by Liquefied Natural Gas (LNG). He underlined the request from original equipment manufacturers to update UN Regulation No. 67 with respect to LPG fuel lines and welding requirements.

32. Referring to his presentation (GRSG-109-14) given under agenda item 8 (para. 28 above), the expert from ISO volunteered to submit for the next GRSG session an official document proposing to amend the provisions of Annex 4B of UN Regulation No. 110, including the correction of some errors in Annexes 4A and 4H.

26. Recalling the purpose of ECE/TRANS/WP.29/GRSG/2016/7, the expert from the Netherlands presented GRSG-110-25 amending the provisions of UN Regulation No. 67 on LPG vehicles to allow Class 0/I hoses with couplings using gas tubes other than seamless material. GRSG noted a number of comments on the need for detailed testing specifications for type approval purposes and for clarification of the responsibilities. The Chair of GRSG invited all experts to send their written comments to the expert from the Netherlands. GRSG agreed to resume consideration of this subject at its next session in October 2016 on the basis of an updated official document by the Netherlands taking into account the comments received.

35. The expert from the Netherlands introduced GRSG-110-26 (superseding ECE/TRANS/WP.29/GRSG/2016/8) proposing an amendment to UN Regulation No. 110 to allow Class 0 hoses with couplings using sealing technologies other than those with a 45° cone and, thus, to avoid design restrictive requirements. The proposal received a number of comments.

36. GRSG adopted the proposal as reproduced below and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their November 2016 sessions, as part (see para. 32 above) of draft Supplement 5 to the 01 series of amendments to UN Regulation No. 110.

Annex 4B, paragraph 1.6.2.2., amend to read:

“1.6.2.2. The interface type for the hose coupling shall be:

(a) sealing cone of swivel-nut type of the type with a half vertical angle of 45°, or
(b) other couplings complying with the tests described in paragraph 1.7., as well as the tests mentioned in Annexes 5A and 5B.

Couplings shall have complementary counterparts."

24. The expert from the Netherlands presented GRSG-111-19 superseding ECE/TRANS/WP.29/GRSG/2016/7 and amending the provisions of UN Regulation No. 67 on LPG vehicles to allow Class 0/I hoses with couplings using gas tubes other than seamless material. The document received a number of comments. GRSG noted study reservations by the experts from Germany and AEGPL. GRSG reviewed the proposal as reflected in GRSG-111-19-Rev.1 and agreed to resume consideration of this subject at its next session in April 2017. The secretariat was requested to circulate GRSG-111-19-Rev.1 with an official symbol.

21. The expert from the Netherlands presented ECE/TRANS/WP.29/GRSG/2017/3 amending the provisions of UN Regulation No. 67 to use non-seamless gas tubes in LPG vehicles. The expert from AEGPL presented GRSG-112-19 inserting some improvements to the proposed provisions. GRSG noted general support and a number of comments. The expert from Germany raised a study reservation. Following the discussion, GRSG agreed to resume consideration of this subject at its next session in October 2017. In this respect, GRSG invited the experts from the Netherlands and AEGPL to prepare a combined document (see para. 20 above), taking into account the comments received and to submit it, in due time, to the secretariat for consideration and final review at the next GRSG session in October 2017.

[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).

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).

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).

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.

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.

10. The expert from OICA presented ECE/TRANS/WP.29/GRSG/2015/33 proposing amendments to the provisions on the activation of a fire alarm system. GRSG adopted ECE/TRANS/WP.29/GRSG/2015/33 as reproduced in Annex III 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 part (see paras. 7 and 9 above) of draft Supplement 5 to the 06 series of amendments to UN Regulation No. 107.

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.

35. The expert from OICA shortly introduced ECE/TRANS/WP.29/GRSG/2015/36 on autonomous CNG heaters for the heating of the engines, but he preferred to have a detailed consideration of the proposal at the next session of GRSG. GRSG endorsed that suggestion.

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.