Hydrogen fusible link

A passive, hydrogen-triggered ventilation system comprising:

• a) a damper comprising at least one blade that is moveable between an open position in which air can flow through the damper and a closed position in which airflow through the damper is inhibited, the at least one blade being biased toward the open position;
• b) a hydrogen fusible link retaining the at least one blade in the closed position, the hydrogen fusible link comprising a first link member including a body comprising a thermally conductive material and having an outer surface, a first side of the outer surface having a bonding region and the first side and a second side of the outer surface having a region;
• c) a bonding material applied to the bonding region on the first side of the outer surface and configured to be in a solid state at an operating temperature to connect the first link member to the at least one blade, the bonding material having a melting temperature that is greater than the operating temperature;
• and
• d) a catalyst material coating the reaction region on the first side and the second side of the outer surface, the catalyst material configured to facilitate an exothermal chemical reaction when exposed to gaseous oxygen and gaseous hydrogen to produce heat, wherein heat produced by the catalyst material is conducted to the bonding region via the body to heat up the bonding material;
• and wherein first link member is configured so that when the catalyst material is exposed to a concentration of gaseous hydrogen that is at or above an activation concentration the reaction region produces sufficient heat to raise at least some of the bonding material above the melting temperature thereby melting at least some of the bonding material thereby disconnecting the first link member from the at least one blade and allowing the at least one blade to move toward the open position.