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6.5.1.5.(1)
OP1OS1OP3OS3
ObjectiveOS1 Fire Safety
Attribution
Application
Application 1: 
Frequency of draining and refilling with fresh fuel of liquid fuel storage tanks that supply fuel to emergency power systems.
This applies to emergency power systems in buildings that are used to supply emergency power to fire alarm systems, voice communication systems in high buildings, fans and other electrical equipment installed to maintain air quality and venting in high buildings, elevators in high buildings, water supply for firefighting, smoke management systems in interconnected floor spaces and emergency lighting systems.
Application 2: 
This also applies to internal combustion engines used to power supplementary blowers required by the National Building Code of Canada in tents and air-supported structures, as stated in Sentence 2.9.3.6.(1).
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Intent
Intent 1: 
To limit the probability of degeneration of, or impurity buildup in, the liquid fuel, which could lead to emergency power systems not operating as originally intended when there is a loss of normal power in a fire situation, which could lead to the inability of the emergency power systems to supply fire protection systems, which could lead to the inability of:
  • fire alarm or voice communication systems to promptly notify persons in the building, which could lead to delays in the evacuation or movement of persons to a safe place,
  • sprinkler, standpipe and hose systems, and other fire suppression systems [that rely on booster or fire pumps, or electrical power] to control or suppress a fire, which could lead to the spread of fire,
  • emergency lighting systems to illuminate egress routes, which could lead to delays in the evacuation or movement of persons to a safe place,
  • smoke management systems to control smoke conditions as originally intended, which could lead to delays in emergency response operations, which could lead to delays in the evacuation or movement of persons to a safe place, and
  • elevator systems to be used in emergency response operations, which could lead to delays in emergency response operations, which could lead to delays in the evacuation or movement of persons to a safe place.
This is to limit the probability of harm to persons.
Intent 2: 
To supersede the requirements of Sentence 6.5.1.1.(1).
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