Pressure relief device integrity sensor

A pressure relief device integrity sensor, comprising:

• a normally closed circuit configured to transmit a signal;
• wherein the normally closed circuit comprises a conductive element having a first resistance, wherein the conductive element is configured to deform in response to a non-activating change in at least one pre-activation reactive region of an explodable pressure relief device, and wherein the deformation of the conductive element causes the conductive element to exhibit a second resistance;
• and
• wherein a change in or interruption of the signal indicates that the pre-activation reactive region has been compromised.

A system for sensing the integrity of a pressure relief device, comprising:

• a non-reversible pressure relief device having one or more pre-activation reactive regions;
• and
• at least one sensor element configured to transmit a signal indicating a condition of at least one of the one or more pre-activation reactive regions before the pressure relief device activates, wherein the sensor element comprises a conductive element exhibiting a first resistance;
• wherein the conductive element is configured to deform when the integrity of the pre-activation reactive region is compromised before activation of the pressure relief device, wherein the deformation of the conductive element causes the conductive element to exhibit a second resistance.

A method of monitoring a non-reclosable pressure relief device, comprising:

• sensing a condition of a pre-activation reactive region of the pressure relief device;
• transmitting a signal indicative of a condition of the pressure relief device, wherein the signal comprises an electrical signal having a voltage and a current;
• and
• changing or interrupting at least one of the voltage and current of the electrical signal to indicate a non-activating deformation of the pre-activation reactive region.

A method of monitoring the integrity of a rupturable pressure relief device configured to activate by rupturing in response to an overpressure, comprising:

• applying a pressure to the rupturable pressure relief device;
• measuring a strain of at least one region of the rupturable pressure relief device;
• identifying a pre-activation reactive region based on the strain measured at the at least one region of the rupturable pressure relief device;
• and
• monitoring a deformation of the pre-activation reactive region before activation of the pressure relief device;
• wherein monitoring a deformation of the pre-activation reactive region before activation of the pressure relief device comprises deforming a conductive element in response to the deformation, wherein deforming the conductive element causes a change in the resistance of the conductive element.