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Kongsberg Maritime AS Avd. Longva
Common Control Platform CCP project 141004 (Marine Controller H6045), CCP project 141007 (Marine Controller H6059, Type H1151), CCP project 141009 (Marine Controller H1170)
The Kongsberg Common Control Platform (CCP) marine controllers (H6045, H6059/H1151, H1170) provide integrated monitoring and automated control of Moss membrane cargo tanks on gas carriers, handling pressure, temperature, BOG management, venting and gas detection in a single DNV‑approved system.
Per IGC Code requirements
Capacity
LNG / LPG / Gas Cargo
Medium
Inspector Detail
▸
Common issues
- Sensor drift or failure on tank level, pressure or temperature transmitters feeding the control system
- Communication/network faults between the controller and field instrumentation or the integrated automation system
- Software/firmware faults requiring reboot or reload, especially after a power interruption
- Gas detection sensor calibration drift affecting alarm reliability
- Valve actuator feedback discrepancy between commanded and actual position
- BOG (boil-off gas) management logic faults causing incorrect venting or compressor sequencing
- Power supply or UPS backup failure affecting control system availability
Inspection checklist
- Verify all tank level, pressure and temperature readings against independent local instrumentation
- Check gas detection system calibration certificates and function-test alarm points
- Confirm valve position feedback matches commanded state for cargo, vent and BOG valves
- Test alarm and shutdown functions (high level, high pressure, low temperature) per maker procedure
- Verify UPS/backup power supply function and battery condition
- Check communication link status between the controller, field devices and the integrated automation system
- Review the alarm and event history log for recurring or unresolved faults
- Confirm software/firmware version matches the maker's approved configuration
- Inspect the control cabinet for condition, cleanliness and secure cable terminations
Service intervals
| Gas detection sensor calibration | per maker/class requirement, typically every 6-12 months |
| UPS battery check/replacement | per maker manual, commonly every 2-4 years |
| Software/firmware version review | at each planned maintenance or class survey |
| Sensor/transmitter calibration check against an independent reference | annually or per maker schedule |
| Alarm and shutdown function test | annually, per class requirement for cargo containment safety systems |
Critical spares
- Spare pressure, level and temperature transmitters matching the system's approved type
- Gas detection sensor heads/cartridges
- Control cabinet fuses, relays and power supply modules
- UPS batteries
- Valve actuator position feedback sensors
Safety
- Reliance on a single control system for cargo containment safety - always confirm independent local instrumentation before manual intervention
- Cryogenic hazard from the cargo if manual valve operation is required following a control system fault
- Confined space and gas hazard considerations if fault-finding requires access near cargo tank penetrations
- Electrical hazard when opening control cabinets - isolate per permit-to-work
Class survey
Cargo containment control systems on gas carriers are surveyed against the IGC Code - function tests of high-level/high-pressure alarms and shutdowns, gas detection calibration records, and confirmation the approved software/firmware configuration is unchanged since the last survey.
Estimated lifetime:
Controller units and I/O modules are commonly kept in service 15-20 years with periodic module-level replacement rather than full-life wear-out; obsolescence of electronic components is often the practical limit rather than mechanical wear - confirm against the maker's support/end-of-life notices.
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
●LNG tank pressure rise due to BOG management error
●Evaporator tube leakage due to thermal cycling stress
●Gas valve unit (GVU) solenoid valve failure
●Gasdetektionssystem Fehlalarm
Service & Maintenance
Gas detection calibration quarterly. GVU function test before each gas operation. IGF Code compliance at annual survey.
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Maritime Network →Replacement Parts
Kongsberg Maritime AS Avd. Longva: Spezialteile per Hersteller. Lead time: 4-8 Wochen. Gasdetektions-Sensoren an Bord.
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Equipment Model #2049
· ✓ still in production