Patent ID: 8297192

Claim:
A venting system for a casing for containing an explosive material, comprising: a base plug having a plurality of venting ports formed therein; wherein said base plug includes a generally ring-shaped indent and a generally ring-shaped failure mechanism formed to fit within said ring-shaped indent; said generally ring-shaped failure mechanism is mounted to said base plug and arranged to seal each of said plurality of venting ports, said failure mechanism having a selected melting temperature such that exposure of said casing to an environment having a temperature that causes said failure mechanism to melt unseals each of the plurality of venting ports to allow controlled burning of said explosive material; an insert ring mounted on an outer surface of the failure mechanism, said insert ring being formed of a durable material to protect said failure mechanism from being damaged; and wherein a first plurality of fasteners mounts said failure mechanism to said base plug and a second plurality of fasteners mounts said insert ring to said failure mechanism.