4. Manage deviations The risks associated with a backlog of assurance and safety critical work orders are properly assessed, authorised and appropriate mitigating actions taken to maintain control of the risks. 5. Analyse and improve The status of the hardware barriers and performance assurance tasks are made readily available to operating staff to enable management of the ongoing conformance of SCEs with their performance standards. This stage provides the visible demonstration that the SCEs are functioning correctly or that non-conformances are managed through deviations.