Proposal e to introduce a missing transitional provision to 04 series to cover the acceptance of type approvals according to the preceding series when not affected by the provisions of the new series.

21. GRSG considered GRSG-124-32, tabled by NGVA Europe to accept the type approvals according to the preceding series when not affected by the provisions of the new series of amendments. GRSG acknowledged the need to be consistent throughout all the series of amendments to the UN Regulation, and adopted GRSG-124-32 as reproduced in annex II to the session report. The secretariat was requested to submit the proposal as draft Supplement 4 to the 04 series of amendments to UN Regulation No. 110, for consideration and vote at the June 2023 sessions of WP.29 and AC.1. At the same time, it was agreed to keep the official proposal to WP.29 in the agenda of the March 2023 session of GRSG for possible further development.

Proposal to enable GRSG approval of documents GRSG/2022/23, GRSG/2022/24 and 2022/25 as a new series of amendments to facilitate traceability.

20. GRSG considered documents prepared by the Task Force on UN Regulation No 110: (a) ECE/TRANS/WP.29/GRSG/2022/23 that introduces the minimum opening set pressure of the primary Liquid Natural Gas (LNG) relief valve, (b) ECE/TRANS/WP.29/GRSG/2022/24 and (c) ECE/TRANS/WP.29/GRSG/2022/25 that updates the existing requirements for CNG/LNG fuelled components. The expert from OICA proposed that the three documents be combined together as a new series of amendments. Therefore, he introduced GRSG-124-31-Rev.1, consolidating the three proposals and amending ECE/TRANS/WP.29/GRSG/2022/24. GRSG adopted ECE/TRANS/WP.29/GRSG/2022/23, ECE/TRANS/WP.29/GRSG/2022/24 and ECE/TRANS/WP.29/GRSG/2022/25 as amended by annex II to the session report. The secretariat was requested to submit the combined document of the three proposals as the 06 series of amendments to UN Regulation No. 110 for consideration and vote at the March 2023 sessions of AC.1 and WP.29.

Update paragraphs to be in line with the requirements of ISO15500 and NGV3.1 (industry standards for CNG):

20. GRSG considered documents prepared by the Task Force on UN Regulation No 110: (a) ECE/TRANS/WP.29/GRSG/2022/23 that introduces the minimum opening set pressure of the primary Liquid Natural Gas (LNG) relief valve, (b) ECE/TRANS/WP.29/GRSG/2022/24 and (c) ECE/TRANS/WP.29/GRSG/2022/25 that updates the existing requirements for CNG/LNG fuelled components. The expert from OICA proposed that the three documents be combined together as a new series of amendments. Therefore, he introduced GRSG-124-31-Rev.1, consolidating the three proposals and amending ECE/TRANS/WP.29/GRSG/2022/24. GRSG adopted ECE/TRANS/WP.29/GRSG/2022/23, ECE/TRANS/WP.29/GRSG/2022/24 and ECE/TRANS/WP.29/GRSG/2022/25 as amended by annex II to the session report. The secretariat was requested to submit the combined document of the three proposals as the 06 series of amendments to UN Regulation No. 110 for consideration and vote at the March 2023 sessions of AC.1 and WP.29.

Proposes the addition of design qualification tests also will harmonize with ISO 15500-13:2012, and the North American CSA/ANSI PRD 1 (2020).

20. GRSG considered documents prepared by the Task Force on UN Regulation No 110: (a) ECE/TRANS/WP.29/GRSG/2022/23 that introduces the minimum opening set pressure of the primary Liquid Natural Gas (LNG) relief valve, (b) ECE/TRANS/WP.29/GRSG/2022/24 and (c) ECE/TRANS/WP.29/GRSG/2022/25 that updates the existing requirements for CNG/LNG fuelled components. The expert from OICA proposed that the three documents be combined together as a new series of amendments. Therefore, he introduced GRSG-124-31-Rev.1, consolidating the three proposals and amending ECE/TRANS/WP.29/GRSG/2022/24. GRSG adopted ECE/TRANS/WP.29/GRSG/2022/23, ECE/TRANS/WP.29/GRSG/2022/24 and ECE/TRANS/WP.29/GRSG/2022/25 as amended by annex II to the session report. The secretariat was requested to submit the combined document of the three proposals as the 06 series of amendments to UN Regulation No. 110 for consideration and vote at the March 2023 sessions of AC.1 and WP.29.

Proposal defines the working pressure for an LNG tank to be the primary relief valve setting (paragraph 4.4.), without stating a minimum value of the said relief valve. If a vehicle has an on-board tank with a primary relief valve that opens at a lower pressure than that at which the filling station is set to stop, the primary relief valve will open during refueling and this is an obvious safety risk.

20. GRSG considered documents prepared by the Task Force on UN Regulation No 110: (a) ECE/TRANS/WP.29/GRSG/2022/23 that introduces the minimum opening set pressure of the primary Liquid Natural Gas (LNG) relief valve, (b) ECE/TRANS/WP.29/GRSG/2022/24 and (c) ECE/TRANS/WP.29/GRSG/2022/25 that updates the existing requirements for CNG/LNG fuelled components. The expert from OICA proposed that the three documents be combined together as a new series of amendments. Therefore, he introduced GRSG-124-31-Rev.1, consolidating the three proposals and amending ECE/TRANS/WP.29/GRSG/2022/24. GRSG adopted ECE/TRANS/WP.29/GRSG/2022/23, ECE/TRANS/WP.29/GRSG/2022/24 and ECE/TRANS/WP.29/GRSG/2022/25 as amended by annex II to the session report. The secretariat was requested to submit the combined document of the three proposals as the 06 series of amendments to UN Regulation No. 110 for consideration and vote at the March 2023 sessions of AC.1 and WP.29.

Text corrects errors/mistakes in the current regulation and update text to be in line with the requirements coming from ISO15500 and NGV3.1 (industry standards for CNG)

38. GRSG considered the proposal for Supplement 1 to the 05 series of amendments to UN Regulation No. 110 natural gas/liquified natural gas (CNG/LNG) vehicles in GRSG-123-28 (superseding ECE/TRANS/WP.29/GRSG/2022/13), to update the existing requirements for compressed CNG/LNG fuelled components. GRSG agreed to resume discussion at its October 2022 session on a new official proposal drafted by a Task Force coordinated by the expert of NGVA Europe.

Proposal to introduce qualification tests to determine that a temperature activated Pressure Relief Device (PRD) will consistently activate in a timely manner.

37. GRSG considered the proposal for Supplement 1 to the 05 series of amendments to UN Regulation No. 110 (CNG and LNG vehicles) in GRSG-123-02-Rev.1 (superseding ECE/TRANS/WP.29/GRSG/2022/12) to overcome the lack of design qualification tests within UN Regulation No. 110 to determine that a temperature activated Pressure Relief Device (PRD) would consistently activate in a timely manner. GRSG agreed to resume discussion at its October 2022 session based on a new official proposal drafted by a Task Force coordinated by the expert of NGVA Europe. GRSG also agreed, in case a new proposal was not submitted by the deadline for official documents, that the secretariat would distribute GRSG-123-02-Rev.1 with an official symbol.

Proposal to introduce a change of definition of working pressure for LNG, and introduce a value for that pressure in Annex 3B. Proposal also applicable for Supplement 2 to the 05 series of Amendments

39. Moreover, GRSG considered GRSG-123-24 to introduce a change of definition of working pressure for LNG, and to introduce a value for that pressure in annex 3B. GRSG finally agreed to resume discussion at its October 2022 session on a new official proposal drafted by a Task Force coordinated by the expert of NGVA Europe.

Proposal of provisions to verify the reliability of temperature-activated pressure relief devices.

37. GRSG considered the proposal for Supplement 1 to the 05 series of amendments to UN Regulation No. 110 (CNG and LNG vehicles) in GRSG-123-02-Rev.1 (superseding ECE/TRANS/WP.29/GRSG/2022/12) to overcome the lack of design qualification tests within UN Regulation No. 110 to determine that a temperature activated Pressure Relief Device (PRD) would consistently activate in a timely manner. GRSG agreed to resume discussion at its October 2022 session based on a new official proposal drafted by a Task Force coordinated by the expert of NGVA Europe. GRSG also agreed, in case a new proposal was not submitted by the deadline for official documents, that the secretariat would distribute GRSG-123-02-Rev.1 with an official symbol.

Proposals to update the existing requirements for compressed natural gas/liquified natural gas (CNG/LNG) fuelled components.

38. GRSG considered the proposal for Supplement 1 to the 05 series of amendments to UN Regulation No. 110 natural gas/liquified natural gas (CNG/LNG) vehicles in GRSG-123-28 (superseding ECE/TRANS/WP.29/GRSG/2022/13), to update the existing requirements for compressed CNG/LNG fuelled components. GRSG agreed to resume discussion at its October 2022 session on a new official proposal drafted by a Task Force coordinated by the expert of NGVA Europe.

37. The expert from EC introduced a study (GRSP-70-23) to review and assess the appropriateness of crash pulses found in the current European Union legislation. Therefore, he stated that it would be needed to identify potential amendments to regulations and assess the potential benefits as well as any (unintended) consequences. He informed that accident data are limited and real-world issue could therefore not defined. At this stage, there is lack of concrete cost-effective data and EC will not follow up the modification of pulses for the time being. He clarified that the European Commission was obliged to evaluate vehicle safety by July 2027 (Article 14 of General Safety Regulation (EU) 2019/2144) and would take this research into account at that time. GRSP suggested sharing the same presentation with the Working Party on General Safety (GRSG). Notably, the expert from EC recommended ensured consistency of UN Regulation No 67 (LPG) and 110 (CNG) as covered by this research, with UN Regulation No 134 / GTR No 13 (hydrogen safety).

65. The expert from NGV Global presented document, GRSG-122-28, a proposal for amendment to UN Regulation No. 110. He recognized contributions from the expert from Hexagon agility and the expert from the Netherlands as they were both elemental in the preparation of this report. He stated the purpose of this proposal is to add a new “Annex 5R” to the test requirements, to demonstrate that the pressure relief device (PRD) will continually activate throughout its designed life.

66. GRSG adopted GRG-122-28 and requested its submission as formal document in the 123rd session of GRSG in March 2022. The Chair of GRSG suggested that it will be beneficial to have a consolidated version of the gas vehicle Regulations which are UN Regulations Nos. 67 and 110 as soon as possible as they have undergone several amendments. The secretariat of GRSG confirmed that these Regulations are in the process of being consolidated.

Proposal for GRSG to add provisions for excess flow valves (EFV) which can shut off fuel flow at the time of operation to specific components.

Proposal from GRSG to update the vehicle-fuel identification symbols in line with ISO 17840-4, Part 4 (Propulsion energy identification) and to extend the scope of the identification requirements to N_/2 and N₃ vehicles.

Proposal to update the whole vehicle approval requirements to the latest series of amendments and to add the WLTP emissions cycle (UN R154). The update would also reflect the separation of UN R116 into three regulations respectively covering vehicle locking systems, alarm systems, and immobilizers.

82. The representative of Japan, Chair of the IWG on IWVTA presented a proposal for the 04 series of amendments to UN Regulation No. 0 (WP.29-184-07), the regular annual update of the UN Regulation and its Annex 4, Part A, Section I (List of requirements for Universal (U)-IWVTA), including an addition of four UN Regulations into the table (Nos. 154, 161, 162 and 163). He invited the World Forum to consider the document for issuing as an official proposal for its November 2021 session.

83. The representative from Switzerland explained the situation in the country that is similar to the situation in the EU, where approval from UN Regulation No. 154 are not sufficient to grant vehicle emission approvals. He suggested to add a footnote in UN Regulation No. 154 to clarify the situation for all CPs. The representative from the EU agreed that for the purpose of EU type approval, an approval to UN Regulation No. 154 needs to be accompanied by supplementary evidence of meeting regional regulatory requirements. He added that the intention of the EU was not to prevent other CPs to benefit from an inclusion of UN Regulation No. 154 into UN Regulation No. 0.

84. The representative from OICA sought further clarifications from the EU, and whether approvals to UN Regulation No. 154 (accompanied by the needed additional EU regulatory requirements) would be accepted by the EU. The representative from the EU said the questions would be clarified in the EU legislation and stated the approvals to UN Regulation No. 154 in itself would be accepted, but evidence related to additional emission requirements not covered by UN Regulation No. 154 was needed to get EU Whole Vehicle Type approval. The representative from the UK supported the contribution from Switzerland and suggested some further discussions were needed. The Chair invited WP.29 to reconsider this issue during the November 2021 session, if need be, when the inclusion of UN Regulation No. 154 into UN Regulation No. 0 is expected.

85. The World Forum requested the secretariat to issue WP.29-184-07 as an official document for consideration at its November 2021 session, invited interested stakeholders to discuss outstanding issues and to revise the proposal accordingly prior to submission.

Proposal for adding provisions for excess flow valves (EFV) which can shut off fuel flow at the time of operation, to specific components.

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.

Proposal to add provisions for excess flow valves (EFV) which can shut off fuel flow during operation to specific
components.

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.

Proposal to update the vehicle-fuel identification symbols in line with ISO 17840-4, Part 4 (Propulsion energy identification) and to extend the scope of the identification requirements to N_/2 and N₃ vehicles.

67. The expert from the Netherlands introduced a proposal for amendments to UN Regulation No. 110 (ECE/TRANS/WP.29/GRSG/2021/9), aiming to update the existing requirements on identification of CNG- and LNG-fuelled buses and to introduce similar identification requirements for trucks.

68. GRSG adopted ECE/TRANS/WP.29/GRSG/2021/9, the proposal for the 05 series of amendments to UN Regulation No. 110, as amended during the 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.

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.

Proposal to add provisions for excess flow valves (EFV) which can shut off fuel flow at the time of operation to specific components.

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.

Proposal to adapt to technological progress and align UN R110 with ISO 15500 and NGV 3.1.

44. The expert from the Netherlands introduced document GRSG-119-16, containing a proposal for amendments to UN Regulation No. 110, proposing the introduction of requirements related to the state-of-the-art test requirements and harmonization with ISO 15500 and NGV 3.1 components used in LNG/CNG systems.

45. GRSG considered document GRSG-119-16 and requested its submission as an official document for consideration at the April 2021 session of GRSG.

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

Proposed list of UN Regulations applicable to IWVTA Phase 2 (2018 – 2022).

61. WP.29 endorsed the informal document WP.29-179-08 and requested the secretariat to prepare it as official document for the next session.

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

46. The expert from NGV Global introduced GRSG-117-18 amending ECE/TRANS/WP.29/GRSG/2019/26 introducing amendments to Annex 3A of the Regulation clarifying issues associated with periodical technical inspection (PTI) and periodic requalification of CNG cylinders.

47. GRSG adopted GRSG-117-18-Rev.1 amending ECE/TRANS/WP.29/GRSG/2019/26 and requested the secretariat to submit it to WP.29 and AC.1 as proposal for Supplement 1 of 04 series of amendments to UN Regulation No. 110 for consideration at their March 2020 sessions.

OICA comments on the NGV proposal (document GRSG/2019/28) 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.

48. The expert from NGV Global introduced ECE/TRANS/WP.29/GRSG/2019/28 proposing certain change of design criteria in Annex 3 of UN Regulation No. 110. The expert from OICA supported the document and suggested some amendments (GRSG-117-28).

49. GRSG adopted ECE/TRANS/WP.29/GRSG/2019/28 as amended by GRSG -117-28 and requested the secretariat to submit it to WP.29 and AC.1 as proposal for Supplement 2 of 04 series of amendments to UN Regulation No. 110 for consideration at their March 2020 sessions.

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.

48. The expert from NGV Global introduced ECE/TRANS/WP.29/GRSG/2019/28 proposing certain change of design criteria in Annex 3 of UN Regulation No. 110. The expert from OICA supported the document and suggested some amendments (GRSG-117-28).

49. GRSG adopted ECE/TRANS/WP.29/GRSG/2019/28 as amended by GRSG -117-28 and requested the secretariat to submit it to WP.29 and AC.1 as proposal for Supplement 2 of 04 series of amendments to UN Regulation No. 110 for consideration at their March 2020 sessions.

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.

46. The expert from NGV Global introduced GRSG-117-18 amending ECE/TRANS/WP.29/GRSG/2019/26 introducing amendments to Annex 3A of the Regulation clarifying issues associated with periodical technical inspection (PTI) and periodic requalification of CNG cylinders.

47. GRSG adopted GRSG-117-18-Rev.1 amending ECE/TRANS/WP.29/GRSG/2019/26 and requested the secretariat to submit it to WP.29 and AC.1 as proposal for Supplement 1 of 04 series of amendments to UN Regulation No. 110 for consideration at their March 2020 sessions.

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.

40. The expert from NGV Global introduced GRSG-116-21 to amend Annex 3A of the Regulation on the design criteria and specifications for Compressed Natural Gas (CNG) cylinders with composite materials in line with standard ISO 11439. The proposal received general support. GRSG agreed to resume consideration of this subject at its next session and requested the secretariat to circulate GRSG-116-21 with an official symbol.

42. The expert from Italy presented GRSG-116-18 showing the benefits and construction principles of conformable storage concepts for future CNG vehicles. He introduced GRSG-116-17 that proposes to amend UN Regulation No. 110 to allow such storage for agricultural and commercial vehicles. GRSG experts welcomed the initiative of Italy. The Chair invited all interested stakeholders to send their comments in due time to the expert from Italy. GRSG agreed to resume consideration of this subject at its next session based on a revised proposal by Italy, to be circulated as an official document.

Proposal to enable the approval of conformable container tanks (new container shapes and configurations) in vehicles equipped with CNG propulsion systems.

42. The expert from Italy presented GRSG-116-18 showing the benefits and construction principles of conformable storage concepts for future CNG vehicles. He introduced GRSG-116-17 that proposes to amend UN Regulation No. 110 to allow such storage for agricultural and commercial vehicles. GRSG experts welcomed the initiative of Italy. The Chair invited all interested stakeholders to send their comments in due time to the expert from Italy. GRSG agreed to resume consideration of this subject at its next session based on a revised proposal by Italy, to be circulated as an official document.

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

Proposal to introduce requirements for CNG compressor and CNG accumulator components designed to maintain stable pressure in fuel systems and to allow the use of a generator fueled by the vehicle gaseous fuel system that provides electricity to run accessories (e.g., overnight power in sleeper cabs, to maintain battery charge during high electrical power use with loading or lifting equipment).

103. The World Forum considered the draft amendments under agenda items 4.8.1 to 4.8.8 and recommended their submission to AC.1 for voting, subject to the following corrections:

104. For agenda item 4.8.6, document ECE/TRANS/WP.29/2019/13, para. 6.12, the last sentence “Manufacturers are advised …… Appendix H to this annex.” shall be deleted.

105. The Chair of GRSG presented the amendment proposal in ECE/TRANS/WP.29/2019/16 under agenda item 4.8.9, to amend UN Regulation No. 110 with the following correction in annex 1A, add: “Items 1.2.4.5.15.4. to 1.2.4.5.15.6., shall be deleted.”. The World Forum recommended their submission to AC.1 for voting.

Proposal to require, in instances where ogive protective covers are fitted to a cylinder, that the covers be removed before conducting the impact damage (drop) test. The proposal further would amend and clarify the need for a gas flow adjuster under UN R110 with regard to the use of carburetors and fuel injectors. A gas flow adjuster is not necessary when an electronic fuel injection system manages the air/fuel mixture and therefore should be removed from paragraph 18.3.1. An adjuster is needed when air/fuel mixture runs via a carburetor and therefore should be added to paragraph 18.3.2.

103. The World Forum considered the draft amendments under agenda items 4.8.1 to 4.8.8 and recommended their submission to AC.1 for voting, subject to the following corrections:

104. For agenda item 4.8.6, document ECE/TRANS/WP.29/2019/13, para. 6.12, the last sentence “Manufacturers are advised …… Appendix H to this annex.” shall be deleted.

105. The Chair of GRSG presented the amendment proposal in ECE/TRANS/WP.29/2019/16 under agenda item 4.8.9, to amend UN Regulation No. 110 with the following correction in annex 1A, add: “Items 1.2.4.5.15.4. to 1.2.4.5.15.6., shall be deleted.”. The World Forum recommended their submission to AC.1 for voting.

Proposal prepared by OICA per decisions by the task force on gas-fuelled vehicle regulations to resolve issues associated with periodic requalification of CNG cylinders. The proposal amends Annexes 3A and 3B, particularly to state “Contracting Parties requiring a more frequent (than every 48 months) or more stringent periodic requalification of cylinders may do so in accordance with the national or regional requirements.”

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.

This proposal introduces transitional provisions into UN Regulation No. 110 should the proposals in document GRSG/2018/11 be adopted. GRSG/2018/11 would change the technical requirements for vehicles equipped with CNG compressors and/or accumulators and therefore would transitional provisions be applicable.

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:

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.

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.

33. The expert from Germany reported on the work progress of the task force on gas-fuelled vehicle regulations during its meeting in Cologne (Germany) on 27 and 28 February 2018 (GRSG-115-05). GRSG welcomed the information.

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.

Proposal to clarify visibility requirements for CNG cylinders, LNG tanks, and their accessories to facilitate external inspections (e.g. for periodic technical inspection).

114. The Chair of GRSG presented proposals on ECE/TRANS/WP.29/2018/123 to ECE/TRANS/WP.29/2018/126 under agenda items 4.7.4 to 4.7.7, to amend UN Regulations Nos. 46, 67, 105 and 110. The World Forum recommended their submission to AC.1 for voting.

Proposal to require, in instances where ogive protective covers are fitted to a cylinder, that the covers be removed before conducting the impact damage (drop) test.

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.

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.

Proposal to amend and clarify the need for a gas flow adjuster under UN R110 with regard to the use of carburetors and fuel injectors. A gas flow adjuster is not necessary when an electronic fuel injection system manages the air/fuel mixture and therefore should be removed from paragraph 18.3.1. An adjuster is needed when air/fuel mixture runs via a carburetor and therefore should be added to paragraph 18.3.2.

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.

Proposal to allow the use of a generator fueled by the vehicle gaseous fuel system that provides electricity to run accessories (e.g., overnight power in sleeper cabs, to maintain battery charge during high electrical power use with loading or lifting equipment). This proposal would allow for the use of LNG/CNG from vehicle fuel tanks and thereby reduce the potential need to vent gas into the air in response to pressure buildup due to warming over time by using the gas to power other devices and equipment.

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”.

Proposal to introduce requirements for CNG compressor and CNG accumulator components designed to maintain stable pressure in fuel systems.

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:

Proposal developed by the Gas-fueled Vehicle Regulations Task Force to facilitate periodic inspections of gas containers through better visibility. In addition, Germany suggests adding a paragraph to allow a Contracting Party or a regional organization of Contacting Parties like the EU to refuse national or regional type-approval and to refuse first registration of a vehicle type affected by the changes introduced by the 03 series of amendments but not meeting those stipulations. Paragraph 24.22. is an addition to paragraph 22.18. giving more stress to the aspects of national and regional type-approval and of first registration of vehicles.

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.

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:

Proposal to allow the use of a generator fueled by the vehicle gaseous fuel system that provides electricity to run accessories (e.g., overnight power in sleeper cabs, to maintain battery charge during high electrical power use with loading or lifting equipment). This proposal would allow for the use of LNG/CNG from vehicle fuel tanks and thereby reduce the potential need to vent gas into the air in response to pressure buildup due to warming over time by using the gas to power other devices and equipment.

34. The expert from the Netherlands introduced GRSG-114-06 to allow the use of gas fuelled generators to provide electrical power for accessories or other vehicle systems. The expert from the United Kingdom suggested simplifying the text and referring to a secondary engine only. GRSG noted the general support for GRSG-114-06-Rev.1 and requested the secretariat to circulate it with an official symbol at the next GRSG session for a final review.

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.

Proposal to amend and clarify the need for a gas flow adjuster under UN R110 with regard to the use of carburetors and fuel injectors. A gas flow adjuster is not necessary when an electronic fuel injection system manages the air/fuel mixture and therefore should be removed from paragraph 18.3.1. An adjuster is needed when air/fuel mixture runs via a carburetor and therefore should be added to paragraph 18.3.2.

35. The expert from OICA sought the advice of GRSG on GRSG-114-27 that adapts the text of the Regulation to the current technology on the gas flow adjustor in the carburettor or injector. GRSG endorsed the proposal in principle and agreed to resume consideration at the next session of GRSG on the basis of an official document.

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.

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.

Proposal to allow for the removal of non-structural parts and accessories in fulfilling the accessibility/inspection provisions of UN R110.

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.

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.

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.

The target of the meeting was to define essential periodic inspection requirements to be respected when installing gaseous fuel components into a vehicle, and to clarify the material requirements for components inside the LPG tank. The work addressed UN R67 and UN R110. No further meetings are planned at this time.

23. The expert from Germany introduced GRSG-114-08 on the recent meeting of the task force on gas-fuelled vehicle regulations held in Cologne (Germany) on 6 and 7 February 2018. He added that progress had been good on UN Regulation No. 110, but the amendments to UN Regulation No. 67 were still under considerations.

Italy research on type CNG4 cylinders in support of the proposal to require that covers be removed in cases where ogive protective covers are fitted to a cylinder before conducting the impact damage (drop) test (document GRSG/2017/29).

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.

Proposal to introduce requirements for CNG compressor and CNG accumulator components designed to maintain stable pressure in fuel systems. See also documents GRSG-113-24 and 25 from the previous GRSG session.

33. The expert from the Netherlands presented GRSG-114-03 on new requirements for components used in LNG/CNG systems such as the “CNG accumulator” and the “CNG compressor”. GRSG noted no objection on the proposal and agreed to consider it in detail at its next session on the basis of an official document.

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.

32. The expert from NGV Global introduced ECE/TRANS/WP.29/GRSG/2018/3 that proposed to correct Table 6.4 on the cylinder design qualification tests. GRSG adopted the proposal and requested the secretariat to submit the proposal to WP.29 and AC.1, for consideration at their November 2018 sessions, as Corrigendum 1 to Revision 3 of UN Regulation No. 110.

Proposal to harmonize the requirements on Compressed Natural Gas (CNG) and/or Liquefied Natural Gas (LNG) vehicles of UN Regulation No. 110 with those of the international standard ISO 11439:2013.

Proposal to harmonize the requirements for CNG/LNG vehicles under UN R110 with those of the international standard ISO 11439:2013.

38. The expert from ISO introduced GRSG-113-02 and GRSG-113-37 justifying the alignment of the provisions in the UN Regulation with those in the latest version of ISO 11439:2013 (as proposed in ECE/TRANS/WP.29/GRSG/2017/31). The expert from OICA expressed his preference to adopt the proposal as a new series of amendments and suggested inserting transitional provisions (GRSG-113-21). GRSG agreed on the need to insert transitional provisions and to replace the dynamic references to international standards by static ones. Following the discussion, the expert from ISO presented GRSG-113-38 taking into account the comments received. GRSG considered the document in detail and adopted the proposal as reproduced in Annex IV (based on GRSG-113-38-Rev.1). The secretariat was requested to submit it to WP.29 and AC.1, as a new draft 03 series of amendments to UN Regulation No. 110, for consideration at their March 2018 sessions.

Proposal to harmonize the requirements for CNG/LNG vehicles under UN R110 with those of the international standard ISO 11439:2013.

38. The expert from ISO introduced GRSG-113-02 and GRSG-113-37 justifying the alignment of the provisions in the UN Regulation with those in the latest version of ISO 11439:2013 (as proposed in ECE/TRANS/WP.29/GRSG/2017/31). The expert from OICA expressed his preference to adopt the proposal as a new series of amendments and suggested inserting transitional provisions (GRSG-113-21). GRSG agreed on the need to insert transitional provisions and to replace the dynamic references to international standards by static ones. Following the discussion, the expert from ISO presented GRSG-113-38 taking into account the comments received. GRSG considered the document in detail and adopted the proposal as reproduced in Annex IV (based on GRSG-113-38-Rev.1). The secretariat was requested to submit it to WP.29 and AC.1, as a new draft 03 series of amendments to UN Regulation No. 110, for consideration at their March 2018 sessions.

38. The expert from ISO introduced GRSG-113-02 and GRSG-113-37 justifying the alignment of the provisions in the UN Regulation with those in the latest version of ISO 11439:2013 (as proposed in ECE/TRANS/WP.29/GRSG/2017/31). The expert from OICA expressed his preference to adopt the proposal as a new series of amendments and suggested inserting transitional provisions (GRSG-113-21). GRSG agreed on the need to insert transitional provisions and to replace the dynamic references to international standards by static ones. Following the discussion, the expert from ISO presented GRSG-113-38 taking into account the comments received. GRSG considered the document in detail and adopted the proposal as reproduced in Annex IV (based on GRSG-113-38-Rev.1). The secretariat was requested to submit it to WP.29 and AC.1, as a new draft 03 series of amendments to UN Regulation No. 110, for consideration at their March 2018 sessions.

Proposal to clarify the test procedure to be applied in assessing compliance with the requirement for “compatibility with heat exchange fluids of non-metallic parts” Annex 5Q is part of UN Regulation No. 110. In Annex 4D, the wording “Compatibility with heat exchange fluids” is used but there is no reference to the applicable tests. The proposal clarifies that the “LNG heat exchanger – vaporizer” falls within Annex 5Q. The proposal correspondingly clarifies the general overview Figure 1-2, with all tests from Annex 5, and Table 5.1 in Annex 5.

42. The expert from the Netherlands introduced GRSG-113-26 proposing to correct and clarify the references to Annex 5Q in UN Regulation No. 110. GRSG welcomed the proposal and invited the expert from the Netherlands to prepare an official document for consideration at the next session of GRSG in April 2018.

Proposal for discussion to enable the certification of CNG compressor components. Due to density and temperature constraints, LNG fuel systems require technologies to warm the LNG fuel to reach temperatures and pressures suitable for the engine. In some configurations, this involves the use of CNG compressors. Therefore, this proposal seeks to enable use of this technology through establishment of requirements to ensure safety.

41. The expert from the Netherlands presented GRSG-113-24 and GRSG-113-25 justifying the need to introduce in the Regulation new requirements for components used in LNG/CNG systems such as the “CNG accumulator” and the “CNG compressor”. GRSG noted general support on the proposals. The Chair invited all GRSG experts to send their comments, in due time, to the expert from the Netherlands. GRSG agreed to resume consideration of this subject at its next session on the basis of an official document, prepared by the Netherlands, taking into account the comments received.

Proposal for further discussion concerning technical advances in the use of CNG accumulators as an intermediate technology for promoting high, stable pressure in CNG engine injection systems. The CNG accumulator is used to stabilize the gas pressure and to allow engine operation whenever the LNG supply system is not able to deliver fuel. This proposal would define requirements to enable the certification of these components.

41. The expert from the Netherlands presented GRSG-113-24 and GRSG-113-25 justifying the need to introduce in the Regulation new requirements for components used in LNG/CNG systems such as the “CNG accumulator” and the “CNG compressor”. GRSG noted general support on the proposals. The Chair invited all GRSG experts to send their comments, in due time, to the expert from the Netherlands. GRSG agreed to resume consideration of this subject at its next session on the basis of an official document, prepared by the Netherlands, taking into account the comments received.

Proposal to include transitional provisions for the alignment of UN Regulation No. 110 with ISO 11439:2013 per document GRSG/2017/31.

38. The expert from ISO introduced GRSG-113-02 and GRSG-113-37 justifying the alignment of the provisions in the UN Regulation with those in the latest version of ISO 11439:2013 (as proposed in ECE/TRANS/WP.29/GRSG/2017/31). The expert from OICA expressed his preference to adopt the proposal as a new series of amendments and suggested inserting transitional provisions (GRSG-113-21). GRSG agreed on the need to insert transitional provisions and to replace the dynamic references to international standards by static ones. Following the discussion, the expert from ISO presented GRSG-113-38 taking into account the comments received. GRSG considered the document in detail and adopted the proposal as reproduced in Annex IV (based on GRSG-113-38-Rev.1). The secretariat was requested to submit it to WP.29 and AC.1, as a new draft 03 series of amendments to UN Regulation No. 110, for consideration at their March 2018 sessions.

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.

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).

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.

43. The expert from the NGV Global proposed to correct Table 6.4. on the cylinder design qualification tests (GRSG-113-06). GRSG noted general support on the proposal and agreed to take a final position on this subject at its next session. The secretariat was requested to circulate GRSG-113-06 with an official symbol.

Proposal to correct the definition of “manual valve”, including deletion of the phrase “rigidly fixed to the cylinder or tank”. The definition of the manual valve as part of the accessories fitted to the container or tank (para. 4.16.) is different from the definition specified in paragraph 4.22. The proposed editorial change aims at clarifying the text of these definitions.

The proposal also introduces provisions for cargo-compartment refrigeration systems connected to the compressed natural gas (CNG) and/or liquefied natural gas (LNG) system(s).

Proposal to correct the definition of “manual valve”, including deletion of the phrase “rigidly fixed to the cylinder or tank”. The definition of the manual valve as part of the accessories fitted to the container or tank (para. 4.16.) is different from the definition specified in paragraph 4.22. The proposed editorial change aims at clarifying the text of these definitions.

Proposal to harmonize the requirements on Compressed Natural Gas (CNG) and/or Liquefied Natural Gas (LNG) vehicles of UN Regulation No. 110 with those of the international standard ISO 11439:2013.

38. The expert from ISO introduced GRSG-113-02 and GRSG-113-37 justifying the alignment of the provisions in the UN Regulation with those in the latest version of ISO 11439:2013 (as proposed in ECE/TRANS/WP.29/GRSG/2017/31). The expert from OICA expressed his preference to adopt the proposal as a new series of amendments and suggested inserting transitional provisions (GRSG-113-21). GRSG agreed on the need to insert transitional provisions and to replace the dynamic references to international standards by static ones. Following the discussion, the expert from ISO presented GRSG-113-38 taking into account the comments received. GRSG considered the document in detail and adopted the proposal as reproduced in Annex IV (based on GRSG-113-38-Rev.1). The secretariat was requested to submit it to WP.29 and AC.1, as a new draft 03 series of amendments to UN Regulation No. 110, for consideration at their March 2018 sessions.

Proposal to require, in instances where ogive protective covers are fitted to a cylinder, that the covers be removed before conducting the impact damage (drop) test.

40. The expert from Italy proposed to amend in Annex 3A of the Regulation the test requirements for the periodic requalification of CNG cylinders to avoid structural failures during their service life (ECE/TRANS/WP.29/GRSG/2017/29). The expert from the Netherlands raised his concern on the access by inspection centres to detailed provisions for the inspection of such cylinders. Thus, he underlined the need that cylinder manufacturers should make available cylinder inspection manuals. GRSG welcomed the offer by Germany to take the lead of a Task Force to review ECE/TRANS/WP.29/GRSG/2017/17 and ECE/TRANS/WP.29/GRSG/2017/29. It was agreed to also involve the International Motor Vehicle Inspection Committee (CITA) in the discussion and to resume consideration of this subject at its next GRSG session in April 2018.

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.

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.

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).

Rationale for the proposal to harmonize UN R110 with ISO 11439:2013.

38. The expert from ISO introduced GRSG-113-02 and GRSG-113-37 justifying the alignment of the provisions in the UN Regulation with those in the latest version of ISO 11439:2013 (as proposed in ECE/TRANS/WP.29/GRSG/2017/31). The expert from OICA expressed his preference to adopt the proposal as a new series of amendments and suggested inserting transitional provisions (GRSG-113-21). GRSG agreed on the need to insert transitional provisions and to replace the dynamic references to international standards by static ones. Following the discussion, the expert from ISO presented GRSG-113-38 taking into account the comments received. GRSG considered the document in detail and adopted the proposal as reproduced in Annex IV (based on GRSG-113-38-Rev.1). The secretariat was requested to submit it to WP.29 and AC.1, as a new draft 03 series of amendments to UN Regulation No. 110, for consideration at their March 2018 sessions.

Proposal for a new series of amendments to UN Regulation No. 110 to improve the specifications for the installation and inspection of CNG cylinders and of LNG tanks and their accessories. This proposal addresses incidents caused by cylinder corrosion. The proposal aims to reinforce the requirements for adequate cylinder protection and for sufficient access to the cylinder and its accessories to allow regular visual inspection.

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).

40. The expert from Italy proposed to amend in Annex 3A of the Regulation the test requirements for the periodic requalification of CNG cylinders to avoid structural failures during their service life (ECE/TRANS/WP.29/GRSG/2017/29). The expert from the Netherlands raised his concern on the access by inspection centres to detailed provisions for the inspection of such cylinders. Thus, he underlined the need that cylinder manufacturers should make available cylinder inspection manuals. GRSG welcomed the offer by Germany to take the lead of a Task Force to review ECE/TRANS/WP.29/GRSG/2017/17 and ECE/TRANS/WP.29/GRSG/2017/29. It was agreed to also involve the International Motor Vehicle Inspection Committee (CITA) in the discussion and to resume consideration of this subject at its next GRSG session in April 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.

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:

Presentation in support of GRSG/2017/22 (Proposal to harmonize UN R110 with standard ISO 11439:2013 on high pressure cylinders for the on-board storage of natural gas as a fuel for automotive vehicles.)

28. The expert from ISO presented GRSG-112-38 justifying the need to harmonize the requirements on Compressed Natural Gas (CNG) and/or Liquefied Natural Gas (LNG) vehicles in UN Regulation No. 110 with those in the latest version of ISO 11439:2013 (as proposed in ECE/TRANS/WP.29/GRSG/2016/22). He recalled the comments received by GRSG experts during the last sessions (mainly on GRSG-111-02-Rev.1 and GRSG-112-05) and announced his intention to prepare, in due time, a revised official document for consideration at the next GRSG sessions, including transitional provisions.

Proposal to establish a requirement for easy access to the CNG container installation in order to permit visual (periodical) inspection as a means to reduce the safety risks, such as refueling explosion, due to corrosion.

32. Reporting on some cases of structural failures of cylinders in his country, the expert from Italy proposed amendments to Annex 3A on the test requirements for the periodic requalification of cylinders (GRSG-112-28). The expert from Finland stated that these test requirements on periodical inspections of CNG/LNG vehicles in use were only recommendations to be taken into account during the type approval procedure of a new type of vehicle. GRSG noted that Contracting Parties were used to perform on their national level the periodical technical inspections in different ways. Referring to GRSG-112-32 presented under agenda item 7 (see para. 26 above), the expert from Germany introduced GRSG-112-33 proposing to also strengthen the requirements in UN Regulation No. 110 for the installation on vehicles of CNG-cylinders, LNG-tanks and their accessories as well as for their subsequent inspection of without the need of disassembling the containers.

33. GRSG noted general support on the proposals. The Chair invited all GRSG experts to send their comments, in due time, to the experts from Germany and Italy. GRSG agreed to resume consideration of this subject at its next session on the basis of official documents, prepared by Germany and Italy, taking into account the comments received.

Proposal to require in the case where ogive protective covers are fitted to a cylinder that the covers be removed before conducting the impact damage (drop) test.

32. Reporting on some cases of structural failures of cylinders in his country, the expert from Italy proposed amendments to Annex 3A on the test requirements for the periodic requalification of cylinders (GRSG-112-28). The expert from Finland stated that these test requirements on periodical inspections of CNG/LNG vehicles in use were only recommendations to be taken into account during the type approval procedure of a new type of vehicle. GRSG noted that Contracting Parties were used to perform on their national level the periodical technical inspections in different ways. Referring to GRSG-112-32 presented under agenda item 7 (see para. 26 above), the expert from Germany introduced GRSG-112-33 proposing to also strengthen the requirements in UN Regulation No. 110 for the installation on vehicles of CNG-cylinders, LNG-tanks and their accessories as well as for their subsequent inspection of without the need of disassembling the containers.

33. GRSG noted general support on the proposals. The Chair invited all GRSG experts to send their comments, in due time, to the experts from Germany and Italy. GRSG agreed to resume consideration of this subject at its next session on the basis of official documents, prepared by Germany and Italy, taking into account the comments received.

Presentation concerning ISO vehicle propulsion energy identification standardization.

31. The expert from the International Association of Fire and Rescue Services (CTIF) gave a presentation (GRSG-112-06) on the need to harmonize the identification of propulsion and energy storage systems in vehicles to reduce the risks for rescuers during their interventions in case of severe road accidents. He informed GRSG about their cooperation with ISO on this subject and the work progress done. He expected that the new standard ISO 17840‐4 would be published in near future. He underlined that the location or position of labels on the vehicle or in the emergency response guide was outside the scope of the ISO standard. Thus, he sought the advice of GRSG experts on how to address this problem within the UN vehicle regulations. GRSG welcomed the information and had a detailed exchange of views on the best way to move forward, either as amendments to existing UN regulations or as a new guideline document to be annexed to one or the other resolutions on the construction of vehicles. Following the discussion, GRSG preferred to wait for the final publication of the ISO standard and invited the expert from CTIF to prepare in the meantime concrete proposals for possible amendments to UN Regulations Nos. 67 (LPG vehicles), 100 (Electric power trained vehicles), 110 (CNG/LNG vehicles), 134 (Hydrogen and Fuel Cell Vehicles) and the new UN Regulation on AECS. GRSG agreed to resume consideration of this item at its next session in October 2017.

28. The expert from ISO presented GRSG-112-38 justifying the need to harmonize the requirements on Compressed Natural Gas (CNG) and/or Liquefied Natural Gas (LNG) vehicles in UN Regulation No. 110 with those in the latest version of ISO 11439:2013 (as proposed in ECE/TRANS/WP.29/GRSG/2016/22). He recalled the comments received by GRSG experts during the last sessions (mainly on GRSG-111-02-Rev.1 and GRSG-112-05) and announced his intention to prepare, in due time, a revised official document for consideration at the next GRSG sessions, including transitional provisions.

Proposal to introduce provisions for cargo-compartment refrigeration systems connected to the compressed natural gas (CNG) and/or liquefied natural gas (LNG) system(s).

30. The expert from France introduced ECE/TRANS/WP.29/GRSG/2017/9 incorporating provisions concerning refrigeration systems for cooling the cargo compartment which were connected to the CNG and/or LNG system. GRSG noted general support. GRSG adopted document ECE/TRANS/WP.29/GRSG/2017/9 as amended below. The secretariat was requested to submit it to WP.29 and AC.1 as part (see para. 29 above) of draft Supplement 1 to the 02 series of amendments to UN Regulation No. 110 for consideration at their November 2017 sessions.

In paragraph 18.5.1.3., replace “GNC/GNL” to read “CNG/LNG” (twice).

Proposal to correct the definition of “manual valve”, including deletion of the phrase “rigidly fixed to the cylinder or tank”. The definition of the manual valve as part of the accessories fitted to the container or tank (para. 4.16.) is different from the definition specified in paragraph 4.22. The proposed editorial change aims at clarifying the text of these definitions.

29. The expert from the Netherlands introduced ECE/TRANS/WP.29/GRSG/2017/4 aimed at correcting an error in the definitions related to the manual valve. GRSG noted a number of comments and adopted ECE/TRANS/WP.29/GRSG/2017/4 as reproduced below. The secretariat was requested to submit it to WP.29 and AC.1 as draft Supplement 7 to the 01 series of amendment and as draft Supplement 1 to the 02 series of amendments to UN Regulation No. 110, for consideration at their November 2017 sessions.

Paragraph 4.16.1., amend to read:
“4.16.1. “Manual valve”: as defined in paragraph 4.22. that is rigidly fixed to the cylinder or tank."
Paragraph 4.16.3., amend to read:
“4.16.3. “Excess flow valve”: as defined in paragraph 4.21."
Paragraph 4.22., amend to read:
“4.22. “Manual valve” means a valve which is operated manually."

Proposal to allow for the use of natural gas refrigeration systems to vehicles propelled by natural gas (CNG or LNG). This proposal addresses a new, environmentally friendly natural gas fuelled refrigeration system for trucks with refrigerated loads that already are propelled by natural gas. Currently paragraph 18.1.7.1 allows heating systems to be fitted on vehicles to heat the passenger compartment and/or the load area of a vehicle, however, the same provision omits cooling systems that are used on trucks for the carriage of loads requiring refrigeration.

Proposal to

1. Update the standards to note that all references to standards are always to the latest version unless stated otherwise.
2. Update Annex II with: Series of PRD/TPRD’s are not allowed
3. Update A.24 with the pressure relief device shall comply with the requirements given in annex 4A for the specific type
4. Update Annex 4A para 4 and para 7 with reference to ISO15500-13.

32. The expert from ISO presented an overview of the activities of his organization on specific aspects for gaseous fuels (GRSG-111-25). He introduced GRSG-111-02 with the rationale of all amendments proposed to UN Regulation No. 110 in document ECE/TRANS/WP.29/GRSG/2016/22 superseding ECE/TRANS/WP.29/GRSG/2016/6. GRSG welcomed GRSG-111-03 listing the copies of all ISO standards referenced to in UN Regulation No. 110 on CNG/LNG vehicles. A number of experts raised a concern on the dynamic referencing of international standards and expressed their preference for a static referencing, mainly for legal purposes. GRSG reviewed the document and agreed on the need to adopt the proposal as a new 03 series of amendments and to insert transitional provisions triggered of the 1 September. The expert from France asked for more detailed information on each of the proposed amendments, especially on the level of stringency and their impact on technical services. The expert from CLEPA underlined the need to also insert transitional provisions for existing type approvals and sufficient lead time for suppliers to upgrade them.

33. Following study reservations by the experts from Germany, France and CLEPA, GRSG decided to resume consideration of the proposal at its next session in April 2017 based on a revised document to be submitted by ISO. The Chair invited all experts to send their written comments on GRSG-111-02-Rev.1 in due time to the experts from ISO or NGV Global.

28. The expert from ISO presented GRSG-112-38 justifying the need to harmonize the requirements on Compressed Natural Gas (CNG) and/or Liquefied Natural Gas (LNG) vehicles in UN Regulation No. 110 with those in the latest version of ISO 11439:2013 (as proposed in ECE/TRANS/WP.29/GRSG/2016/22). He recalled the comments received by GRSG experts during the last sessions (mainly on GRSG-111-02-Rev.1 and GRSG-112-05) and announced his intention to prepare, in due time, a revised official document for consideration at the next GRSG sessions, including transitional provisions.

32. The expert from ISO presented an overview of the activities of his organization on specific aspects for gaseous fuels (GRSG-111-25). He introduced GRSG-111-02 with the rationale of all amendments proposed to UN Regulation No. 110 in document ECE/TRANS/WP.29/GRSG/2016/22 superseding ECE/TRANS/WP.29/GRSG/2016/6. GRSG welcomed GRSG-111-03 listing the copies of all ISO standards referenced to in UN Regulation No. 110 on CNG/LNG vehicles. A number of experts raised a concern on the dynamic referencing of international standards and expressed their preference for a static referencing, mainly for legal purposes. GRSG reviewed the document and agreed on the need to adopt the proposal as a new 03 series of amendments and to insert transitional provisions triggered of the 1 September. The expert from France asked for more detailed information on each of the proposed amendments, especially on the level of stringency and their impact on technical services. The expert from CLEPA underlined the need to also insert transitional provisions for existing type approvals and sufficient lead time for suppliers to upgrade them.

33. Following study reservations by the experts from Germany, France and CLEPA, GRSG decided to resume consideration of the proposal at its next session in April 2017 based on a revised document to be submitted by ISO. The Chair invited all experts to send their written comments on GRSG-111-02-Rev.1 in due time to the experts from ISO or NGV Global.

Proposal to correct the definition of “manual valve”, including deletion of the phrase “rigidly fixed to the cylinder or tank”.

34. The expert from the Netherlands introduced GRSG-111-20 aimed at correcting an error in the definitions related to the manual valve. GRSG noted general support and agreed to resume consideration of this subject at its next session in April 2017. The secretariat was requested to circulate GRSG-111-20 with an official symbol.

Proposal to add a new condition to paragraph 18.1.7.2. such that the number of filling cycles will be verified at the time of type approval in order to prevent exceeding the maximum number of filling cycles.

29. The expert from France proposed incorporating new provisions concerning refrigeration systems for cooling the cargo compartment which are connected to the compressed natural gas (CNG) and/or liquefied natural gas (LNG) system (ECE/TRANS/WP.29/GRSG/2016/16). The expert from Japan raised concerns about risks of increased filling cycles of CNG cylinders due to a higher filling frequency. He suggested supplementing the proposed provisions with additional test conditions to not exceed the maximum number of filling cycles of CNG cylinders (GRSG-111-18). A number of experts were of the opinion that the number of filling cycles of CNG cylinders specified in the test requirements of UN Regulation No. 110 would be sufficient to cover the higher filling frequencies. GRSG did not support the additional test conditions proposed by Japan.

30. GRSG adopted ECE/TRANS/WP.29/GRSG/2016/16 as amended below and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their March 2017 sessions, as draft Supplement 6 to the 01 series of amendments to UN Regulation No. 110.

Paragraph 18.1.7.1., replace “compartiment des marchandises” by “compartiment de chargement”.
Paragraph 18.5.1.3., subparagraphs (b) and (c), replace “compartiment des marchandises” by “compartiment de chargement” and “contrôle électronique” by “contrôle électronique GNC/GNL” (two times).

Proposal to

1. enable the use of autonomous CNG heaters for the heating of engines before the vehicle is in service
2. allow the use of Class 0 hoses with couplings using sealing technologies other than those with a 45° cone
3. correct a typographical error in paragraph 7.1. where the reference should be to paragraph 8.22 rather than 8.21
4. remove a duplicate and contradictory reference in Annex 4A to the requirements of Class 1 pressure relief valves
5. align paragraph 2.2. of Annex 4H with paragraph 18.6.1.2. limiting the delay in switching-off of the automatic valve after stalling of the engine to two seconds (rather than five as presently in the text), and
6. include the liquefied natural gas (LNG) fuel connector provisions as specified in ISO 12617:2015.

Proposal to allow for the use of natural gas refrigeration systems to vehicles propelled by natural gas (CNG or LNG). This proposal addresses a new, environmentally friendly natural gas fuelled refrigeration system for trucks with refrigerated loads that already are propelled by natural gas. Currently paragraph 18.1.7.1 allows heating systems to be fitted on vehicles to heat the passenger compartment and/or the load area of a vehicle, however, the same provision omits cooling systems that are used on trucks for the carriage of loads requiring refrigeration.

29. The expert from France proposed incorporating new provisions concerning refrigeration systems for cooling the cargo compartment which are connected to the compressed natural gas (CNG) and/or liquefied natural gas (LNG) system (ECE/TRANS/WP.29/GRSG/2016/16). The expert from Japan raised concerns about risks of increased filling cycles of CNG cylinders due to a higher filling frequency. He suggested supplementing the proposed provisions with additional test conditions to not exceed the maximum number of filling cycles of CNG cylinders (GRSG-111-18). A number of experts were of the opinion that the number of filling cycles of CNG cylinders specified in the test requirements of UN Regulation No. 110 would be sufficient to cover the higher filling frequencies. GRSG did not support the additional test conditions proposed by Japan.

30. GRSG adopted ECE/TRANS/WP.29/GRSG/2016/16 as amended below and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their March 2017 sessions, as draft Supplement 6 to the 01 series of amendments to UN Regulation No. 110.

Paragraph 18.1.7.1., replace “compartiment des marchandises” by “compartiment de chargement”.
Paragraph 18.5.1.3., subparagraphs (b) and (c), replace “compartiment des marchandises” by “compartiment de chargement” and “contrôle électronique” by “contrôle électronique GNC/GNL” (two times).

Copies of the ISO standards. Extraction from zip file requires password. GRSG delegations may obtain the password from the secretariat.

32. The expert from ISO presented an overview of the activities of his organization on specific aspects for gaseous fuels (GRSG-111-25). He introduced GRSG-111-02 with the rationale of all amendments proposed to UN Regulation No. 110 in document ECE/TRANS/WP.29/GRSG/2016/22 superseding ECE/TRANS/WP.29/GRSG/2016/6. GRSG welcomed GRSG-111-03 listing the copies of all ISO standards referenced to in UN Regulation No. 110 on CNG/LNG vehicles. A number of experts raised a concern on the dynamic referencing of international standards and expressed their preference for a static referencing, mainly for legal purposes. GRSG reviewed the document and agreed on the need to adopt the proposal as a new 03 series of amendments and to insert transitional provisions triggered of the 1 September. The expert from France asked for more detailed information on each of the proposed amendments, especially on the level of stringency and their impact on technical services. The expert from CLEPA underlined the need to also insert transitional provisions for existing type approvals and sufficient lead time for suppliers to upgrade them.

33. Following study reservations by the experts from Germany, France and CLEPA, GRSG decided to resume consideration of the proposal at its next session in April 2017 based on a revised document to be submitted by ISO. The Chair invited all experts to send their written comments on GRSG-111-02-Rev.1 in due time to the experts from ISO or NGV Global.

Detailed review of the proposed changes to UN R110.

32. The expert from ISO presented an overview of the activities of his organization on specific aspects for gaseous fuels (GRSG-111-25). He introduced GRSG-111-02 with the rationale of all amendments proposed to UN Regulation No. 110 in document ECE/TRANS/WP.29/GRSG/2016/22 superseding ECE/TRANS/WP.29/GRSG/2016/6. GRSG welcomed GRSG-111-03 listing the copies of all ISO standards referenced to in UN Regulation No. 110 on CNG/LNG vehicles. A number of experts raised a concern on the dynamic referencing of international standards and expressed their preference for a static referencing, mainly for legal purposes. GRSG reviewed the document and agreed on the need to adopt the proposal as a new 03 series of amendments and to insert transitional provisions triggered of the 1 September. The expert from France asked for more detailed information on each of the proposed amendments, especially on the level of stringency and their impact on technical services. The expert from CLEPA underlined the need to also insert transitional provisions for existing type approvals and sufficient lead time for suppliers to upgrade them.

33. Following study reservations by the experts from Germany, France and CLEPA, GRSG decided to resume consideration of the proposal at its next session in April 2017 based on a revised document to be submitted by ISO. The Chair invited all experts to send their written comments on GRSG-111-02-Rev.1 in due time to the experts from ISO or NGV Global.

Proposal to harmonize UN R110 with standard ISO 11439:2013 on high pressure cylinders for the on-board storage of natural gas as a fuel for automotive vehicles.

32. The expert from ISO presented an overview of the activities of his organization on specific aspects for gaseous fuels (GRSG-111-25). He introduced GRSG-111-02 with the rationale of all amendments proposed to UN Regulation No. 110 in document ECE/TRANS/WP.29/GRSG/2016/22 superseding ECE/TRANS/WP.29/GRSG/2016/6. GRSG welcomed GRSG-111-03 listing the copies of all ISO standards referenced to in UN Regulation No. 110 on CNG/LNG vehicles. A number of experts raised a concern on the dynamic referencing of international standards and expressed their preference for a static referencing, mainly for legal purposes. GRSG reviewed the document and agreed on the need to adopt the proposal as a new 03 series of amendments and to insert transitional provisions triggered of the 1 September. The expert from France asked for more detailed information on each of the proposed amendments, especially on the level of stringency and their impact on technical services. The expert from CLEPA underlined the need to also insert transitional provisions for existing type approvals and sufficient lead time for suppliers to upgrade them.

33. Following study reservations by the experts from Germany, France and CLEPA, GRSG decided to resume consideration of the proposal at its next session in April 2017 based on a revised document to be submitted by ISO. The Chair invited all experts to send their written comments on GRSG-111-02-Rev.1 in due time to the experts from ISO or NGV Global.

28. The expert from ISO presented GRSG-112-38 justifying the need to harmonize the requirements on Compressed Natural Gas (CNG) and/or Liquefied Natural Gas (LNG) vehicles in UN Regulation No. 110 with those in the latest version of ISO 11439:2013 (as proposed in ECE/TRANS/WP.29/GRSG/2016/22). He recalled the comments received by GRSG experts during the last sessions (mainly on GRSG-111-02-Rev.1 and GRSG-112-05) and announced his intention to prepare, in due time, a revised official document for consideration at the next GRSG sessions, including transitional provisions.

Presentation on the background and accomplishments of the GFV informal group from January 2008 to June 2016 as the group concludes its final effort on heavy-duty dual fuel engine retrofit systems.

Proposal to amend GRSG/2015/36 introducing requirements for the operation of a CNG heater when the vehicle is stationary and before starting the engine. The limitation on the number of valves used to operate the CNG combustion heater will require technical changes without any significant benefit. The proposal therefore deletes the limitation and introduces additional clarifications.

31. The expert from OICA recalled the discussion at the previous GRSG session on ECE/TRANS/WP.29/GRSG/2015/36 proposing to amend the provisions of UN Regulation No. 67 to allow the installation of autonomous CNG heaters for the heating of the engine. The expert from Germany presented GRSG-110-27 further clarifying the text of paragraph 18.5.1.3.

32. GRSG adopted the proposal as reproduced below and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their November 2016 sessions, as draft Supplement 5 to the 01 series of amendments to UN Regulation No. 110.

Paragraph 18.5.1.3., amend to read:
“18.5.1.3. Notwithstanding the provisions of paragraph 18.5.1.2.
(a) the automatic cylinder valve may stay in an open position during commanded stop phases, and
(b) in the case where a fire alarm system is installed in the compartment where a CNG combustion heater is located, the automatic cylinder valve(s) may be opened by an electronic control unit for the purpose of permitting its operation to warm the engine coolant.”

Editorial amendment to document GRSG/2016/8 for clarity. The original proposal would allow the use of Class 0 hoses with couplings using sealing technologies other than those with a 45° cone provided that the hose assembly can withstand the impulse test of paragraph 1.7. and the tests of Annexes 5A (overpressure test) and 5B (external leakage test). This proposal clarifies that the original sealing-cone specification or other compliant couplings, including designs with soft seals (e.g., O-ring) provided they pass testing described in Annexes 5D, 5F, and 5G.

35. The expert from the Netherlands introduced GRSG-110-26 (superseding ECE/TRANS/WP.29/GRSG/2016/8) proposing an amendment to UN Regulation No. 110 to allow Class 0 hoses with couplings using sealing technologies other than those with a 45° cone and, thus, to avoid design restrictive requirements. The proposal received a number of comments.

36. GRSG adopted the proposal as reproduced below and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their November 2016 sessions, as part (see para. 32 above) of draft Supplement 5 to the 01 series of amendments to UN Regulation No. 110.

Annex 4B, paragraph 1.6.2.2., amend to read:

“1.6.2.2. The interface type for the hose coupling shall be:

(a) sealing cone of swivel-nut type of the type with a half vertical angle of 45°, or
(b) other couplings complying with the tests described in paragraph 1.7., as well as the tests mentioned in Annexes 5A and 5B.

Couplings shall have complementary counterparts."

Proposal to allow for the use of natural gas refrigeration systems to vehicles propelled by natural gas (CNG or LNG). This proposal addresses a new, environmentally friendly natural gas fuelled refrigeration system for trucks with refrigerated loads that already are propelled by natural gas. Currently paragraph 18.1.7.1 allows heating systems to be fitted on vehicles to heat the passenger compartment and/or the load area of a vehicle, however, the same provision omits cooling systems that are used on trucks for the carriage of loads requiring refrigeration.