NHS England HTM 06-01 Electrical Services Supply and Distribution (2017 Edition)
Chapter 4: Understanding the risk from loss of supply – NHS England HTM 06-01 Electrical Services Supply and Distribution (2017 Edition)

NHS England HTM 06-01 Electrical Services Supply and Distribution (2017 Edition) 4.18-4.23: Supply restoration times for each clinical risk grade

Grade E (support and circulation) and D (ambulant care): loss does not directly endanger treatment, though business continuity may need secondary supply for long outages. Grade C (general care): interruption to supply and to supporting engineering services should be limited to under 15 s. Grade B (complex treatment and diagnostics): medical equipment supply interruptions limited to within 15 s, with a tertiary supply (no-break, or changeover of 0.5 s or less) considered depending on treatment and equipment. Grade A (life support, complex surgery): where loss of supply threatens life a tertiary supply must take over within 0.5 s, or be no-break if critical equipment will not continue after a 0.5 s break; Medical IT is required for socket-outlets serving life-critical equipment; a clinical risk assessment with manufacturers should set imaging and angiography backup (for example returning a tilting table to a CPR position). In all graded areas supporting engineering services should be on the secondary supply within 15 s.

Maintained by Gerard Blokdyk

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  • 4.1 4.1 EPSS supply by class and type

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Other controls in Chapter 4: Understanding the risk from loss of supply – NHS England HTM 06-01 Electrical Services Supply and Distribution (2017 Edition)

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