37. Recalling the discussion of GRSG at its previous session, the expert from Italy introduced ECE/TRANS/WP.29/GRSG/2018/16 to amend Annex 3A of the Regulation on the test requirements for Compressed Natural Gas (CNG) cylinders to avoid structural failures during their service life. The expert from NGV Global proposed some further clarifications (GRSG-115-06) and a new definition on “certified cylinder”. The proposals received general support.

38. The expert from OICA presented ECE/TRANS/WP.29/GRSG/2018/13 to adapt the text of the Regulation to the current technology on the gas flow adjustor in the carburettor or injector. GRSG noted a number of comments and proposals for amendments.

39. The expert from OICA introduced GRSG-115-18-Rev.2 amending the Regulation with respect to the inspection requirements for the periodic requalification of CNG cylinders to avoid structural failures during their service life. Finally, GRSG adopted ECE/TRANS/WP.29/GRSG/2018/16, ECE/TRANS/WP.29/GRSG/2018/13 and GRSG-115-18-Rev.2 as reproduced in Annex III to this report. The secretariat was requested to submit the proposals to WP.29 and AC.1 as draft Supplement 2 to the 03 series of amendments to UN Regulation No. 110 for consideration at their March 2019 sessions.

40. The expert from the Netherlands presented ECE/TRANS/WP.29/GRSG/2018/11 on new requirements on “CNG compressor” and “CNG accumulator” components used in LNG/CNG systems. The expert from OICA stated that the proposal by the Netherlands result in changes of the level of the technical requirements for vehicles equipped with CNG compressors and/or accumulators. He introduced GRSG-115-19 proposing to submit the new requirements as a new 04 series of amendments to UN Regulation No. 110 together with appropriate transitional provisions.

41. Finally, GRSG adopted ECE/TRANS/WP.29/GRSG/2018/11, as amended below. The secretariat was requested to submit the proposal to WP.29 and AC.1 as draft 04 series of amendments to UN Regulation No. 110 for consideration at their March 2019 sessions.

Insert new paragraphs 24.22. to 24.25. (Transitional provisions), to read:

42. The expert from the Netherlands introduced ECE/TRANS/WP.29/GRSG/2018/12 to insert new requirements for vehicle gas systems to provide gaseous fuel to a generator that would provide electrical power to accessories or other systems on the vehicle. GRSG noted general support on the proposal. GRSG adopted ECE/TRANS/WP.29/GRSG/2018/12, as amended below. The secretariat was requested to submit the proposal to WP.29 and AC.1 as part (see para. 41) of draft 04 series of amendments to UN Regulation No. 110 for consideration at their March 2019 sessions.

Through the whole proposal, replace the words “second engine” by “secondary engine”.