Yes through the bleeder valves but a bleeder valve isn't an emergency pressure release valve.
Bleeder valves are designed to bleed gas from a system which contains a liquid. They aren't designed to be used to relieve pressure in an emergency situation, infact under high enough pressure they stop working all together.
In a more common setting you see these types of valves on breaks and on heating systems that use hot water, while they do bleed steam they bleed it in order to prevent the accumulation of gas and air bubbles within the system not to control the pressure.
