Safety devices for protection against excessive pressure utilizing bursting discs are called "bursting disc safety devices" according to ISO 4126-2:2019.
A bursting disc safety device must be fitted with a bursting disc, whose material is unaffected by the protected medium or by an industrial atmosphere.
The clamping force is created by torque wrenches when necessary. The device must be designed in such a way that the bursting disc has a concentric seat, can be fitted to parallel faces, and is not damaged in pressure areas in which it merely bulges. Furthermore, it must be protected against the disc fixing coming loose.
Bursting disc devices must be tight against the atmosphere until they respond (open) in the range of operating temperatures. They must release the required cross-section when the disc bursts.