16.3.1 Spaces in which gas consumers are located
shall be fitted with a mechanical ventilation system that is arranged
to avoid areas where gas may accumulate, taking into account the density
of the vapour and potential ignition sources. The ventilation system
shall be separated from those serving other spaces.
16.3.2 Gas detectors shall be fitted in these
spaces, particularly where air circulation is reduced. The gas detection
system shall comply with the requirements of chapter 13.
16.3.3 Electrical equipment located in the double
wall pipe or duct specified in 16.4.3 shall comply with the requirements
of chapter 10.
16.3.4 All vents and bleed lines that may contain
or be contaminated by gas fuel shall be routed to a safe location
external to the machinery space and be fitted with a flame screen.