Proposal for amendments to UN Regulation No. 110 - Periodic requalification
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Proposal to improve provisions for the visual inspection of CNG cylinders, LNG tanks, and their accessories. Germany has proposed (document GRSG-112-33) the prohibition of components or parts of protective housing which must be disassembled during inspection. Italy has proposed (document GRSG-112-28) that visual inspection of cylinders Include access inside any protective covers of the cylinders. Based upon field experience, OICA believes that corrosion damage between support straps, brackets, and pads and the cylinder can be readily identified during visual inspection. Such corrosion requires cylinder replacement. Therefore, OICA proposes clarifications to inspection procedures to address the German and Italian concerns.

Reference Number: GRSG-113-20
Origin: OICA
Date: 3 October 2017
Proposal Status: Superseded
Related Documents:
GRSG-112-28 | Proposal to amend Regulation No. 110
GRSG-112-33 | Proposal for amendments to UN Regulation No. 110
GRSG-114-08 | Report on the 1st meeting of the GRSG Task Force on "Gas-fueled vehicle regulations"
GRSG-114-26 | UN R110: Proposal for amendments with regard to visual inspections
GRSG/2017/17 | Proposal for the 03 series of amendments to Regulation No. 110
GRSG/2017/29 | Proposal for amendments to Regulation No. 110
WP.29/2018/125 | UN R110: Proposal for Supplement 1 to the 03 series of amendments
Discussion(s):
Working Party on General Safety | Session 113 | 10-13 Oct 2017

39. The expert from Germany introduced ECE/TRANS/WP.29/GRSG/2017/17 to improve the specifications for the installation and inspection of Compressed Natural Gas (CNG) cylinders or of Liquefied Natural Gas (LNG) tanks and their accessories. GRSG welcomed the proposal and noted that WP.29 and the Administrative Committee of the 1997 Agreement were expected to consider and adopt ECE/TRANS/WP.29/2017/134 on a new UN Rule on Periodical Technical Inspections of motor vehicles using CNG and/or LNG in their propulsion system. The proposal from Germany received a number of comments, especially on the need to align the recommendations for the periodical technical inspections of such vehicles with the specifications for the re-qualification of the CNG cylinders or LNG tanks. GRSG noted the comments received by the experts from NGV Global (GRSG-113-03) and OICA (GRSG-113-20).