Construction must meet Approved Document B and HTM 05-02 adjacencies, with fire risk assessed including electrical explosion and interference. Fire-extinguishing equipment should have audible and visual alarms; automatic systems should be fitted where internal transformers contain flammable fluid, designed by specialists; halon or CO2 systems should not be used for new installations and halon must be decommissioned in a controlled way. Dual-incomer substations may be split by a fire-rated wall.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.