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Discussion paper proposing new requirements for natural-gas powered buses
Document GRSG-105-10
1 October 2013

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.

Submitted by Netherlands
Status: Superseded
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Previous Documents, Discussions, and Outcomes
8. | Regulation No. 110 (Specific components for CNG)

32. Recalling the discussion at the previous session of GRSG, the expert from the Netherlands presented GRSG-106-07 proposing new provisions on a directional discharge of the pressure relief devices of GNG containers. GRSG noted a number of comments on the possible location of the containers on the vehicle and questioned the need to also address vehicles with LNG or even hydrogen containers. Following the discussion, GRSG agreed to resume consideration at its next session in October 2014, on the basis of a revised proposal to be submitted by the expert from the Netherlands.

9. | Regulation No. 118 (Burning behavior)

36. The expert from the Netherlands proposed to extend the scope of UN Regulation No. 18 to vehicles equipped with propulsion systems using CNG (ECE/TRANS/WP.29/GRSG/2014/13). GRSG noted a number of comments and agreed to resume consideration of this subject at a later session awaiting the outcome of deliberations on the automatic fire suppression systems into UN Regulation No. 107 (see para. 10 above) and the proposed directional discharge of the pressure relief devices of GNG containers under UN Regulation No. 110 (see para. 32).

9. | Regulation No. 110 (CNG vehicles)
Related and Previous Documents
GRSG/2014/13
GRSG-106-07
Relates to UN R110 | UN R118 |