It is usual for a site, whether designed Critical National Infrastructure or not, to have its own infrastructure that is either important to the functioning of the site or may pose a hazard to life or other assets should it be subjected to an attack. Protective security for such infrastructure is therefore important. Examples of such infrastructure include (the list is not exhaustive):
- Pressurised fuel supply and storage systems
- Electrical supply systems
- Communication systems
Such infrastructure may be located external to a site and may be buried or on the surface. The physical security measures to be considered may be different in each case. It is recommended that:
- Important infrastructure is identified and the risks assessed
- Redundant and resilient systems are installed
- Important or hazardous infrastructure is routed away from locations where attacks are most likely and where the infrastructure may suffer from collateral damage, e.g. near a site entry point. Where such routing cannot be avoided ensure the risks are understood and consider applying additional protection to the infrastructure
- Consideration is given to additional security around those assets that are particularly important and where the consequence of loss would be high.