Articulating SIS with loss of plant air/volume bottles

One of the issues found at several plants is when having a system that uses plant air articulate a function, it is not reviewed if the device would function several times at loss of power or an emergency situation. This can be critical in a shutdown if plant air is lost and the only volume is in the supply pipe. Have you evaluated if the device can cycle several times if necessary, or has enough volume to have a complete stroke or action if plant air war is lost?