Since the 1960’s diesel has been the predominant fuel used for the propulsion of heavy goods vehicles. Fuel-related requirements for dangerous goods (ADR) vehicles have been based upon this prevalence; however, duel fuel vehicles using CNG and LNG have raised issues concerning the use of such fuel systems on ADR vehicles. This paper discusses ADR vehicles and such gaseous fuels.

Document from the Working Party on the Transport of Dangerous Goods (WP.15) concerning the use of LNG fuels under discussion within the WP.29 GFV informal working group.

Proposal to introduce type-approval provisions for fuel selection systems and for “valve control at stop-start”. The former focuses on ensuring that dual fuel systems prevent fuel intended for one system from flowing into the other system. The latter would let the tank valves stay open in a commanded stop-start phase as is the case for the idling phase of vehicles not equipped with start-stop systems.

Draft text of amendments to UN R110 to introduce provisions for liquefied natural gas systems pursuant to the 15th LNG Task Force session.

Text as revised during the 15th LNG Task Force session.

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

Paper submitted to the UN Working Party on the Transport of Dangerous Goods to open discussions on the use of gaseous fuels in ADR vehicles.

Proposal for less stringent ground clearance requirements for LNG fuel tanks (relative to those for CNG tanks).

Comments on document WP.29/2013/101 (draft Supplement 1 to the 01 series of amendments to Regulation No. 110) raising concerns over safety issues regarding LNG systems.

(Originally submitted as GRSG-105-31 and reproduced here as LNG-12-04.)

Responses to German proposals (document GRSG-105-31 and reproduced for the task force session as LNG-12-04) concerning the draft Supplement 1 to the 01 series of amendments to Regulation No. 110 (document WP.29/2013/101).

Corrections adopted by GRSG (at its 105th session) to the draft supplement pending before the World Forum for its November 2013 session. The supplement introduces provisions for motor vehicles using liquefied natural gas (LNG).

The draft supplement 1 to the 01 series of amendments to UN R110 (pending before the November WP.29 session) introduces type-approval provisions for vehicles equipped with liquefied natural gas propulsion systems. In this document, Germany signals its intention to prepare substantial revisions concerning its safety provisions.

Proposal to clarify that the requirements and test procedures introduced for fuel rails in the 01 series are not intended to apply to other CNG components.

In response to a bus accident where a pressure relief device produced a horizontal jet flame lasting several minutes, the Netherlands offers possible changes to CNG component and bus safety regulations.

Presentation on the European vehicle natural gas market and EC program to establish a European standard for a quality specification for biomethane to be used as a fuel for vehicle engines; and a Technical Specification or European Norm for a quality specification for biomethane to be injected into natural gas pipelines.

Copy of the proposal to clarify the text concerning automatic valves in the draft Supplement 1 to the 01 series of amendments to UN R110, submitted to the Working Party on General Safety as document GRSG/2013/28 for consideration at their October 2013 session.

Copy of the proposal to introduce type approval provisions for “valve control at stop-start” into UN R110 (originally submitted to the Working Party on General Safety as document GRSG/2013/26 for consideration at their October 2013 session).

This informal document aims at correcting and clarifying the draft amendments to Regulation No. 110 as proposed in WP.29/2013/101. At its November 2013 session, the World Forum WP.29 is expected to consider and adopt draft Supplement 1 to the 01 series of amendments to Regulation No. 110, inserting new provisions for motor vehicles using Liquefied Natural Gas (LNG) in their propulsion system. During the last session, GRSG agreed to have a final review of the proposal.

Text as approved by the GRSG to introduce type-approval provisions for vehicles equipped with liquefied natural gas propulsion systems. The proposal has been prepared as a new consolidated version of UN Regulation No. 110.

Proposal to clarify the text concerning automatic valves in the draft Supplement 1 to the 01 series of amendments to Regulation No. 110 (document WP.29/2013/101).

Proposal to introduce type approval provisions for “valve control at stop-start”. The proposal would let the tank valves stay open in a commanded stop-start phase as is the case for the idling phase of vehicles not equipped with start-stop systems. These provisions are similar to those proposed for UN Regulation No. 67

Proposal to introduce type-approval provisions for fuel selection systems into the regulation on compressed natural gas-powered vehicles.

Review of four international LNG standards (ISO 12991-2012, NFPA 52-2013, SAE J2343-2008 and AS 2739-2009) for requirements related to LNG tank shut-off devices. The report discusses specific aspects and challenges of mounting two valves in series on same LNG line. The emphasis is on using two components, a manual valve and an automatic valve mounted in series on
the LNG supply line to shutoff the flow.

Draft text under discussion within the LNG task force as of its 11th session proposing amendments to document GRSG/2013/7 concerning automatic valve provisions.

Draft text under discussion within the LNG task force concerning automatic valve requirements on LNG tanks.

Proposal for amendments to document GRSG/2013/7, the draft text to introduce type-approval provisions for vehicles equipped with LNG propulsion systems, prepared as a new consolidated version (Revision 3) of UN Regulation No. 110.

This report provides recommendations for changes to the US Federal Motor Carrier Safety Regulations (FMCSRs), North American Standard inspection procedures, and out-of-service (OOS) criteria to facilitate the use of natural gas (compressed or liquefied) in commercial vehicles.

Agenda for the scheduled telephone conference.

Information provided to GRPE at the request of GRSG to explain the nature of LNG container venting as a safety precaution responding to LNG boil-off effects on pressure levels.

Text from the Informal Group on Gaseous Fuelled Vehicles in order to comply with a request by the GRSG. Amendments proposed by the LNG Task Force on incorporating LNG systems into Regulation 110 were approved by the 104th session of the GRSG (GRSG/2013/7). The German delegate, recognizing that potential methane release — venting from ‘boil off’ — is an environmental issue suggested that the issue of holding time for LNG and its venting be brought forward to the GRPE.

Text prepared by the Chair of the Task Force on Liquefied Natural Gas (LNG) vehicles (on the basis of document GRSG/2013/7) to introduce type approval provisions for vehicles equipped with LNG propulsion systems. The proposal has been prepared as a new consolidated version (Revision 3) of UN Regulation No. 110.

Document prepared for GRPE consideration following the approval by GRSG of amendments proposed by the LNG Task Force to introduce provisions for LNG systems into UN Regulation 110 (document GRSG/2013/7). This document concerns LNG holding time and the potential for methane release (i.e., venting from boil-off).

Draft text to introduce type approval provisions for “valve control at stop-start”.

Working draft of the text to introduce type approval provisions of fuel selection system.

Text prepared by the Chair of the Task Force on Liquefied Natural Gas (LNG) vehicles (based on document GRSG/2013/7) to introduce type approval provisions for vehicles equipped with LNG propulsion systems. The proposal has been prepared as a new consolidated version (Revision 3) of UN Regulation No. 110.

Text prepared by the Chairman of the LNG Task Force (Netherlands) in response to questions raised by France concerning the proposed amendment to introduce LNG provisions into UN R110 (document GRSG/2013/7). The amendments aim to improve the internal consistency of the proposed amendments.

Text prepared by the Chairman of the LNG Task Force (Netherlands) in response to concerns raised by France regarding the possibility of overfilling an LNG system. This amendment to the proposal to introduce LNG provisions into UN R110 (document GRSG/2013/7) matches ISO requirements covering the same issue.

This compendium of case studies is provided in response to a question raised by the French delegation to the Amendments proposed to Regulation 110 pertaining to the use of LNG as a vehicular fuel.

Document prepared by the Chairman of the LNG Task Force (Netherlands) to respond to questions raised by France concerning the proposed LNG amendments to UN R110 (document GRSG/2013/7).

Text prepared by the Chair of the LNG Task Force (Netherlands) to improve provisions for the identification of the correct device for cryogenic applications and consistency within the proposed amendments to UN R110 (GRSG/2013/7) pursuant to concerns raised by France.

Text prepared by the Chairman of the LNG Task Force (Netherlands) to address issues and concerns about proposed amendments to UN R110 (document GRSG/2013/7) raised by France.

Text prepared by the Chairman of the LNG Task Force (Netherlands) to address issues and concerns about proposed amendments to UN R110 (document GRSG/2013/7) raised by France.

Proposed revisions to the CLEPA to introduce into Regulations Nos. 67 and 110 type approval provisions for “valve control at stop-start”. The CLEPA proposal would allow the tank valves to stay open in an active stop-start phase for CNG/LPG with stop-start engines.

As part of investigations into a bus accident involving CNG container ruptures, the Netherlands would like to know whether other countries have experienced fires in CNG vehicles and what measures have been taken to reduce the potential risks.

Link to the video referenced in the IRU discussion paper on the need for measures to mitigate CNG/LNG fire risks.

IRU request for a risk assessment on CNG and LNG vehicles pursuant to a coach fire during which the main valves on CNG cylinders ruptured.

Text prepared by CLEPA to introduce a prohibition on any flow of a gaseous fuel into a diesel/gasoline reservoir and limiting the flow of diesel/gasoline into a gaseous fuel tank in bi-fuel vehicles.

Text prepared by the European Association of Automotive Suppliers (CLEPA) to introduce into Regulations Nos. 67 and 110 type approval provisions for “valve control at stop-start”. This proposal allows the tank valves to stay open in an active stop-start phase for CNG/LPG with stop-start engines.

Text prepared by the European Association of Automotive Suppliers (CLEPA) to enable the approval of an OEM engine control unit on a CNG/LNG vehicle during the vehicle type approval process, eliminating the need for a separate type approval of the ECU as is the current requirement.

Text prepared by the Chair of the Task Force on Liquefied Natural Gas vehicles to introduce type-approval provisions for vehicles equipped with LNG propulsion systems. The proposal has been prepared as a new consolidated version (Revision 3) of UN Regulation No. 110.