Blast damper

A blast damper is used to protect occupants and equipment of a structure against overpressures resultant of an explosion.

The blast dampers normally protect air inlets and exhaust penetrations in an otherwise hardened structure.

Blast dampers usually employ some type of blade held open with tension from a spring.

Typical blast dampers are sized to match HVAC ductwork and provide proper airflow with low pressure drop.

Common applications include protecting equipment and personnel of control rooms and accommodation modules in petrochemical and industrial process facilities onshore and offshore.