Substations and switchrooms should be assessed for environmental risks (flooding, drainage overflow, ventilation), not sited under bulk water or wet services, located per HTM 05-02 fire adjacencies, built from fire-resisting materials to Approved Document B, robust enough to contain an internal electrical explosion (external units with pressure relief), protected against water ingress, bunded where fluid-filled transformers are used, and finished to limit dust. Outward-opening doors should be large enough to replace equipment. External equipment should be kept clear of live vegetation by at least 3 m.
This control maps to 1 controls across 1 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.
Every mapping shown was judged rather than inferred from wording similarity, and the ones that failed review are published too. See the coverage reports and what was rejected.
The graph holds this control, the 1 it maps to, and the evidence behind each claim, over MCP and REST.