Method and system for pressure relief in a multi chamber vessel

A vessel, comprising:

• a body comprising an interior surface that defines an interior space;
• a flexible membrane located within the interior space of the vessel, wherein the interior space includes:
• a first chamber at least partially defined by the flexible membrane;
• and
• a second chamber at least partially defined by the flexible membrane and a portion of the interior surface of the body;
• a pressure relief device coupled to the body, wherein the pressure relief device provides selective fluid communication between the second chamber and an exterior of the body;
• a piercing member extending into the second chamber;
• and
• a standoff separating the piercing member from the pressure relief device by a distance.

A method of constructing a vessel, comprising:

• providing a body;
• coupling a flexible membrane to the body such that the flexible membrane extends within an interior of the body to create a first chamber and a second chamber within the body;
• forming a pocket in the body;
• punching a hole in the pocket to form a standoff and a piercing member that includes an aperture and piercing points surrounding the aperture and projecting from the standoff, and
• installing a pressure relief device into the pocket such that the pressure relief device provides selective fluid communication between the second chamber and an exterior of the body.