Detect abnormal gamma radiation levels in criticality incidents

The solution

A modern CIDS, developed by the Atomic Weapons Establishment (AWE) for internal use, has been designed, to meet or exceed current standards.

Able to withstand fields of radiation encountered during a criticality incident and continue operating, the CIDS technology provides gamma dose information during and after a criticality event, supporting post-incident response.

This updated and redeveloped CIDS has undergone extensive gamma, neutron, electromagnetic, temperature and humidity testing.

Key benefits

• Reduced false alarms – due to a ‘two out of N’ voting system.
• The CIDS’ continuous diagnostic monitoring ensures any faults in the system are reported. If a channel is faulty, it can be maintained while the system continues to operate.
• Safety improvement – designed to achieve Safety Integrity Level 2 (SIL 2) and is tolerant of Single Point Failures (SPF) as far as reasonably practicable.
• A backup power supply ensures that alarm operation is maintained even after a loss of electrical supply, enabling continuous operation.
• Facility-wide gamma dose information is available centrally and in real-time: before, during, and after a criticality event.