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| Document Title | UN R110: Proposal for amendments with regard to visual inspections | ||||||||||
| Reference Number | GRSG-114-26 | ||||||||||
| Date |
10 Apr 2018
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| Summary | Proposal to delete the reference to visual inspection under the support straps of the cylinders from the text under consideration. Such inspection would require dismantling of the cylinder installations which would contravene the consensus decision to avoid such exhaustive dismantling. | ||||||||||
| Source(s) | OICA | ||||||||||
| Rulemaking Area(s) | UN R110 CNG/LNG System Components | ||||||||||
| Proposal Status | Not supported | ||||||||||
| Meeting(s) | |||||||||||
| Related Documents | |||||||||||
| GRSG/2017/17 | Proposal for the 03 series of amendments to Regulation No. 110 (superseded) | ||||||||||
| GRSG/2017/29 | Proposal for amendments to Regulation No. 110 (superseded) | ||||||||||
| GRSG-113-03 | NGV comments on the proposed amendments to UN Regulation No. 110 | ||||||||||
| GRSG-113-20 | Proposal for amendments to UN Regulation No. 110 - Periodic requalification (superseded) | ||||||||||
| Downloads | |||||||||||
| UNECE server | .pdf format | .docx format | |||||||||
| Excerpts from session reports related to this document | |||||||||||
| GRSG | Session 114 | 9-13 Apr 2018 |
28. The expert from Germany introduced GRSG-114-10 on the outcome of the task force on ECE/TRANS/WP.29/GRSG/2017/17 which was on improving the provisions for installing and inspecting Compressed Natural Gas (CNG) cylinders or Liquefied Natural Gas (LNG) tanks and their accessories. The expert from Italy preferred a more accurate inspection of such containers without the removal of structural parts (GRSG-114-19). After discussion, GRSG agreed to add design requirements that allow easy periodical technical inspections. The expert from the Netherlands requested that container manufacturers provide more detailed recommendations for periodical technical inspections and for periodic requalification tests, and requested that these recommendations be stored and made available for all inspections. 29. The expert from OICA presented GRSG-114-26 proposing to amend the specifications for inspection of CNG-cylinders / LNG-tanks and their accessories. GRSG did not support the proposal. 30. Finally, GRSG considered a revised proposal (GRSG-114-10-Rev.1) and adopted ECE/TRANS/WP.29/GRSG/2017/17 as reproduced below. The secretariat was requested to submit the proposal to WP.29 and AC.1 as draft Supplement 1 to the 03 series of amendments to UN Regulation No. 110 for consideration at their November 2018 sessions. Insert a new paragraph 18.1.6.1., to read:
31. The expert from Italy, in reference to ECE/TRANS/WP.29/GRSG/2017/29, proposed to amend Annex 3A of the Regulation, i.e. the test requirements for the periodic requalification of CNG cylinders to avoid structural failures during their service life (GRSG-114-32), including new provisions for a mandatory impact damage test for all cylinders without the use of shoulder pads. GRSG welcomed the specific test reports provided by Italy on CNG4 cylinders (GRSG-114-07, GRSG-114-14, GRSG-114-15). GRSG noted concerns and comments. Finally, GRSG agreed to refer it to the task force and to resume consideration of this subject at its next session on the basis of a revised official document. |
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