43
Smart Infrastructure
A6V10393190_h_en_--
2019-09-01
6.1.2
Alarm Verification Concept (AVC)
The graphic below illustrates the difference between the AVC and the DIRECT alarm
procedure. The AVC concept takes the interaction of personnel into consideration.
Manned operation
Manned operation enables the responsible personnel to examine the fire alarm before
initiating the intervention force. This may avoid hassles in case of false alarms.
Reaction time (V1)
In case of a fire incident, the responsible personnel must confirm the alert at the fire
control panel by pressing the acknowledge button (ACK).
Investigation time V2 starts if activated. If nobody confirms the alert state, the V1 timer
expires and the panel automatically goes to 'ALARM' state.
In the event of a major incident (emergency), the nearest ‘Manual call point’
1
or <Manned/Unmanned> button must be pressed to turn the fire control panel into
'ALARM' state. (
1
function depends on programming)
Investigation time (V2)
During the investigation time V2 the operating personnel may examine the location of
fire:
In the event of a major incident (emergency), the nearest ‘Manual call point’
2
or <Manned/Unmanned> button must be pressed to turn the fire control panel into
'ALARM' state. (
2
function depends on programming)
The panel goes to 'ALARM' state if the investigation is not confirmed within time V2.
The operator may reset the panel in the case of a minor incident or false alarm.
AVC
DIRECT
Manned
Unmanned
State 'ALARM'
·
Buzzer (re-)activated
·
Sounder output (re-)activated
·
Fire output activated
·
Alarm dialer activated (Intervention)
State 'ALERT”
·
Buzzer activated
·
Sounder output activated if programmed
·
Reaction time 'V1” has started
Ack:
Fire?
Yes
à
V2 start
Reset:
Manned/
unmanned:
Yes
V1 ti
me ou
t
V2 ti
me ou
t
Fire?
Manned/
unmanned:
Yes
No
No
No
