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3.2.7.7.(1)
ApplicationIntent
OS1OP1OH5OS1OS3
ObjectiveOH5 Hazardous Substances Containment
Attribution
[F12-OH5] Applies to the requirement for a suitably identified shut-off valve outside the building.
Application
Application 1: 
Identification and location of fuel supply shut-off valves for liquid or gas fuel-fired engines and turbines for emergency electrical power supplies, where the engines or turbines are dependent on a fuel supply from outside the building.
This applies to emergency electrical power systems, for buildings described in Sentence 1.3.3.2.(1) of Division A, used to supply emergency power to:
  • emergency lighting systems, as required in Articles 3.2.7.3. and 3.2.7.4.,
  • fire alarm systems, as required in Article 3.2.7.8.,
  • voice communication systems in high buildings, as required in Sentence 3.2.7.8.(1),
  • elevators in buildings more than 36 m high, as required in Clause 3.2.7.9.(1)(a),
  • water supply for firefighting, as required in Clause 3.2.7.9.(1)(b), and
  • fans and other electrical equipment that are installed to maintain air quality and venting in high buildings defined in Subsection 3.2.6., as required in Clauses 3.2.7.9.(1)(c) and (d).
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Intent
Intent 1: 
To limit the probability of delays in shutting off the fuel supply to emergency power systems in the event of its unwanted release, which could lead to the spread of fuel, which could lead to harm to the public.
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