283. Cylinders diameters greater than 230 mm require additional safety devices when the scavenging spaces are openly connected to the cylinders. Which of the following devices will be used to protect such spaces?

Explosion relief valves protect large-diameter engine scavenging spaces from pressure and flame fronts resulting from scavenge fires or explosions. These valves are required for cylinders exceeding 230 mm in diameter when scavenging spaces are openly connected to the cylinders, and are distinct from tri-knock fittings, quick release expansion joints, and stacked plate inlet check valves, which serve different functions.