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3.2.7.9.(1) | Application | Intent |
| OS1 | OP1 | OP3 | OS3 |
| Objective | OS3 Safety in Use |
| Attribution | |
| Application | Application 1: Design, with respect to the minimum duration of operation
under a full load, of emergency generator power supplies for elevators:
This applies to buildings described
in Sentence 1.3.3.2.(1) of Division A.
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| Intent | Intent 1: To limit the probability that, during a failure of the normal
power supply, persons will be trapped in an elevator, which could lead to
harm to persons. Intent 2: To limit the probability that, during a failure of the normal
power supply in an emergency situation, emergency generator power supplies
to elevators will not be capable of performing their intended functions for
a length of time sufficient for emergency responders to carry out their duties,
or for persons to evacuate or move to a safe place, which could lead to the
inability of 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, which
could lead to harm to persons, including emergency responders.
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