Accumulation of gas. Places for containing open type traction batteries that may produce hydrogen gas shall be provided with a ventilation fan or a ventilation duct to prevent the accumulation of hydrogen gas.
Accumulation of gas. Spaces for open type traction batteries that may produce hydrogen gas shall be equipped with a ventilation fan, a ventilation duct or any other suitable means to prevent the accumulation of hydrogen gas. E/ECE/324/Rev.2/Add.135 E/ECE/TRANS/505/Rev.2/Add.135
