Method and apparatus for establishing an environmentally isolated volume

A cable release mechanism comprising:

• a plate configured to be attached to a barrier curtain that is supported relative to one or more walls that at least partially define a volume by a first cable;
• a diaphragm carried by the plate and configured to be deflectable in response to a pressure differential being placed upon the barrier curtain;
• a lever operably connected to the diaphragm for movement therewith;
• and
• a capture block responsive to the lever and configured to be held in an engagement position by the lever so as to engage the first cable in an instance in which less than a predetermined pressure differential has been placed upon the barrier curtain, wherein the capture block is permitted to release the first cable in an instance in which the lever has moved in response to at least the predetermined pressure differential being placed upon the barrier curtain.

A method for at least partially environmentally isolating a volume, the method comprising:

• releasably attaching a first cable to one or more walls that partially define the volume;
• supporting a barrier curtain that partially defines the volume with the first cable;
• engaging the first cable with a cable release mechanism that is attached to the barrier curtain and that includes a diaphragm;
• and
• causing the cable release mechanism to release the first cable in response to deflection of the diaphragm occasioned by at least a predetermined pressure differential being placed upon the barrier curtain.