Alarm Monitoring & Control System (AMCS) · Automation & Control
The Kongsberg K-Bridge BNWAS MK2 is a bridge navigational watch alarm system. It monitors the alertness of the officer on watch by requiring periodic acknowledgement and escalates to visual and audible alarms in the bridge and then to other crew locations if there is no response. It is installed on the navigation bridge with an alarm panel, reset devices and remote alarm outputs, and is listed with DNV and IMO SOLAS approvals.
What our service work and the manufacturer documentation say about keeping this model running.
Test the system function at regular intervals by letting the dormant period expire and verifying the visual alarm, bridge audible alarm and remote alarm stages. Surveyors normally check that reset devices work, that manual and automatic on/off modes follow the vessel's procedure, and that the system is connected to the emergency power supply.
| Watch-to-watch function test | commonly performed at each change of watch or per the vessel's safety management system |
|---|---|
| Full escalation test | typically monthly or per class/flag requirement - confirm against the vessel's planned maintenance and SOLAS chapter V requirements |
| Backup power/battery check | typically checked every 6-12 months per the maker's manual, with battery renewal per the maker's stated service life |
Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.
BNWAS is a SOLAS chapter V mandatory item; class and flag surveys typically require a documented function test of the full alarm and escalation chain, verification that the dormant period setting is compliant, and confirmation the system cannot be defeated - maintain test records for survey.
Keep spare reset buttons, alarm sounders, a spare control unit or interface board if the maker lists one, fuses and cable connectors. Store the configuration and wiring documentation with the bridge equipment records.
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