This agenda item relates to UN R110 CNG/LNG System Components.

GRSG is expected to consider a proposal to amend UN Regulation No. 110, tabled by the expert from the Netherlands (ECE/TRANS/WP.29/GRSG/2021/9).

GRSG is expected to consider a proposal to amend UN Regulation No. 110, tabled by the expert from OICA (ECE/TRANS/WP.29/GRSG/2021/10 based on GRSG-119-20).

Working Party on General Safety | Session 119 | 6-9 Oct 2020

46. The expert from OICA introduced GRSG-119-21, a proposal for amendments to UN Regulation No. 110, related to the definition of “Excess flow valve” to differentiate between pressure-equalization type and shut-off type excess flow valves, and to CNG system requirements, as elaborated in GRSG-119-20.

47. Following detailed technical discussions, including comments from representatives from the Netherlands, Sweden and NGV Global, GRSG requested the submission of a revised version of GRSG-119-20, based on further consideration and discussions among interested stakeholders, as an official document for consideration at the April 2021 session of GRSG, inviting interested stakeholders to deliver their remarks and comments to OICA.

Working Party on General Safety | Session 121 | 12-16 Apr 2021

69. The expert from OICA introduced a proposal for amendments to UN Regulation No. 110 (ECE/TRANS/WP.29/GRSG/2021/10, as amended by GRSG-121-22), with the aim of adding provisions for excess flow valves (EFV) which can shut off fuel flow at the time of operation, to specific components.

70. Following technical discussions and comments, GRSG adopted ECE/TRANS/WP.29/GRSG/2021/10, the proposal for supplement 3 to the 04 series of amendments to UN Regulation No. 110, as amended by GRSG-121-22 and in session, and requested the secretariat to submit it as an official document to WP.29 and AC.1 for consideration and vote at their November 2021 sessions.

Documentation
GRSG-121-22 | UN R110: Proposal for amendment to GRSG/2021/10 (OICA)
GRSG/2021/9 | UN R110: Proposal for the 05 series of amendments (Netherlands)
GRSG/2021/10 | UN R110: Proposal for amendments (OICA)