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Kongsberg Alarm control, Acon

Alarm Monitoring System · Automation & Control

Class-certified type (DNV register) · technical data sheet not yet verified

Continuously surveys systems giving audible and visual warnings of equipment failure, off-limits situations and where equipment has exceeded stipulated maintenance intervals We will no longer sell this product and it is being phased out. Continuously surveys systems giving audible and visual warnings of equipment failure, off -limits situations and where equipment has exceeded stipulated maintenance intervals. Acon alarm continuously surveys machinery and systems and gives audible and visual warning of equipment failure, off-limits situations or where equipment has exceeded stipulated maintenance intervals. Alarms are structured and presented in a logical way. The operator can see the current alarms listed on the central screen on the bridge and control room, together with current values of the measured parameter, gaining a quick appreciation of the severity of the alarm situation. Our support teams, located worldwide, are committed to helping you manage the vital balance between operational availability and cost. Wherever your vessel is located, our support is close at hand. Get expert help anytime, anywhere—our global support team is available 24/7 to assist you. Upgrade your systems with tailored retrofit solutions to extend vessel life and boost performance. Explore our training programs to build skills, ensure safety, and maximize operational efficiency. Our Global Customer Support works 24/7 to provide prompt responses, technical expertise and global assistance from key locations in 32 countries. EMEA:+47 33 03 24 07APAC:+65 97 11 24 07AMERICAS:+15 04 303 5244E-mail:

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Inspection

Inspector Detail

Common issues

  • Input/output card failures producing false or missing alarms
  • Communication bus faults between remote I/O units and the central alarm panel
  • Aging power supply units and backup batteries
  • Obsolete spare parts availability, since the manufacturer has discontinued this product
  • Software/firmware version mismatches on aging hardware after partial upgrades
  • Sensor drift causing nuisance alarms that crew learn to ignore
  • Printer/logging unit failures where fitted

Inspection checklist

  • Functional test of alarm points against known process values where practicable
  • Check power supply and battery backup status, and test operation on loss of main power
  • Verify audible and visual alarm indication at bridge and engine control room panels
  • Review the alarm history log for repeating/nuisance alarms indicating sensor or card drift
  • Check system time synchronization
  • Check the onboard spare parts holding for critical cards given the product's discontinued status
  • Confirm the installed software/firmware version against the last version the maker supported

Service intervals

Alarm point function testtypically at each watch handover or daily per the ship's SMS
Full system function test (all alarm points)typically annually or at class survey
Battery backup replacementper the installed battery type's recommended interval, commonly 3-5 years for sealed lead-acid - confirm against the actual battery fitted
Configuration/software backupafter any change to the system configuration

Critical spares

  • Input/output card
  • Power supply module
  • Operator display/HMI unit
  • Communication interface module
  • Backup battery

Safety

  • Alarm fatigue from repeated nuisance alarms is a genuine safety risk - crew can start ignoring alarms, including real ones
  • Loss of the alarm and monitoring system in a periodically unmanned machinery space requires a documented fallback watchkeeping arrangement
  • Electrical hazard inside cabinets - isolate and lock out/tag out before working on cards or wiring
  • This product line has been discontinued by the manufacturer - long-term spares support is not guaranteed, which is itself an operational risk worth flagging for renewal planning

Class survey

For vessels with an unmanned machinery space (UMS/AUT) notation, surveyors check functional operation of all alarm and safety functions, correct duplication of alarms (e.g. engineer's alarm, cabin repeaters), and records of system faults; given the discontinued status of this system, surveyors and superintendents may increasingly query its long-term maintainability

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