Surveillance of safety systems

The surveillance of safety systems should cover systems and components provided to shut down the reactor and keep it shut down, and to ensure that safety limits are not exceeded either owing to anticipated operational occurrences or during the initial operation of systems that are required in order to mitigate the consequences of accident conditions. Such mitigation could be done through  

The surveillance shall demonstrate the availability of the protection system, including all redundant parts, and shall verify the set points at which actuation occurs and the acceptability of aU response times. 

All SSCs with functions that mitigate the consequences of accident conditions should be subject to periodic surveillance, to demonstrate their availability 

The availability of safety system support features should be confirmed. The functions associated with SSCs important to safety that should be considered include, but are not necessarily limited to, the supply of  

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