ATTRIBUTION:
Functional Statement:
F11
To notify persons, in a timely manner, of the need
to take action in an emergency.
F81
To minimize the risk of malfunction, interference,
damage, tampering, lack of use or misuse.
Objective:
OS1.5
INTENT:
To supersede the requirements of
Sentence
3.2.4.6.(2) and
permit manual silencing switches outside the fire alarm control unit, where
silenced audible signal devices automatically restore to normal operation
after 10 min.
This is to limit the probability
that audible signal devices will:
- be inadvertently or purposely silenced [made inoperative or
damaged] as a result of false alarms, and
- not be restored to normal operation after being silenced.
This is to limit the probability of the signal devices not operating
in a fire situation, which could lead to persons not being promptly notified,
which could lead to delays in the evacuation or movement of persons to a safe
place, which could lead to harm to persons.