Updated proposal to clarify provisions for periodic testing and periodic requalification of Compressed Natural Gas (CNG) cylinders and Liquefied Natural Gas (LNG) tanks.

Proposal based on the outcomes of discussions by the GRSG task force on gas-fuelled vehicle regulations to clarify provisions for periodic testing and periodic requalification of Compressed Natural Gas (CNG) cylinders and Liquefied Natural Gas (LNG) tanks.

Proposal to introduce changes/additions in the Change of Design Table to better specify appropriate test requirements for CNG cylinders with composite materials and, in some cases, to harmonize with International Standard Organisation (ISO) standard 11439.

Proposal to introduce changes and additions to the Change of Design Table to better specify appropriate test requirements for CNG cylinders with composite materials and, in some cases, to harmonize with ISO 11439.

Proposal to address issues associated with periodic testing and periodic requalification of CNG cylinders.

Proposal for clarifications and editorial improvements to the draft amendment to require, in instances where that ogive covers be removed before conducting the impact damage (drop) test.

In the absence of complete harmonization with ISO 11439, this proposal recommends that Table 6.4 of UN R110 should be amended by the following for CNG-1 designs:

1. Delete A.17, A.25, and A.7 since they do not match the tests specified in paragraph 7.5 on Cylinder design qualification tests
2. Add A.15 and A.6 since they do match the tests specified in paragraph 7.5 on Cylinder design qualification tests
3. Add A.24 because paragraph 6.9 on Fire protection requires all PRDs on all cylinder types to comply with A.24.

Comments from NGV Global on the proposals from Italy (GRSG-112-28) and Germany (GRSG-112-33) regarding the testing and inspection of CNG cylinders.

Proposal to include the liquefied natural gas (LNG) fuel connector provisions as specified in ISO 12617:2015.

Proposal to establish an informal working group to consolidate existing amendments to UN Regulation No. 110 in light of technical progress of other gaseous fuel regulations and standards and, where necessary, amend the Regulation to promote improved clarity and harmonization.

Proposal to add a definition for “CNG Accumulator” and to revise a related decision tree flow chart.

Request to postpone consideration of the Dutch proposal concerning the discharge of natural gases from a pressure relief device (PRD) in anticipation of conclusions and best practices on the location and venting of PRD from a research program underway in the US.

Proposal to establish an expert working group to review and update the provisions of UN Regulation No. 110 in order to produce a new consolidated, harmonized version of the regulation.

Text prepared by the Netherlands and the International Association for Natural Gas Vehicles (IANGV/NGV Global) to clarify the provisions of Chapter 18 following the introduction of automatic valves (see report GRSG/84, para. 38).

Proposal to introduce a new class of CNG components (Class 6) operating at a higher pressure.

Presentation on efforts to prevent natural gas powered vehicles from being certified as “dangerous goods vehicles” (ADR) through education of the UN ADR working party (WP.15) on liquefied and natural gas fuel systems and development of regulatory language to address WP.15 concerns.

LNG Task Force update, including review of issues concerning dangerous-goods transport vehicles (ADR vehicles).

Presentation to the 95th session of the Working Party on the Transport of Dangerous Goods (WP.15)

US EPA presentation at the Clean Cities Summit held in Indianapolis on June 28, 2011, transmitted to GFV courtesy of Jeff Seisler representing NGV Global and Clean Fuels Consulting.

Progress report of the LNG Task Force created to develop technical specifications for LNG (Liquefied Natural Gas) cryogenic components to be installed on-board road vehicles.

Progress report of the task force of the Gaseous fueled vehicles (GFV) informal group working on the introduction of liquefied natural gas provisions into UN R110.