Containment Hardened Vent

A containment hardened vent (CHV) is a method for venting containment to atmosphere which means a controlled radiological release. If pressure inside the containment gets too high, the reactor’s safety systems will have trouble pumping water into the core to keep it cool – which will make the accident much worse and possibly lead to fuel damage and higher levels of radiation release. In addition, hydrogen may build up and if not released it cause a explosion.

• Reduce pressure to allow low pressure water injection.
• Vent hydrogen

See also

• (initial) EA-12-050 -> replaced by EA-13-109