The bridge manoeuvring system does not require maintenance due to its design, yet it would be an advantage if the below mentioned items were checked occasionally.
Safety Panel. Activate the "Test shut-down" and "Test slow-down" one at a time, and check that the appropriate white lamps immediately light up strongly. The test buttons should be activated (pushed) for at least 20 s in order to initiate the appropriate functions.
Bridge Emergency Button
Open the cover which protects the three emergency buttons, and activate the STOP button.
Check that the emergency stop valve (ESV) is activated and draws the fuel pumps to "0" index. Set the button back in the neutral position after checking is completed.
Check the emergency "Full" button whilst an upward regulation through the load program is ordered, i. e. when max. r.p.m. are ordered on the bridge telegraph. As soon as the load program lamp lights up to indicate that further upward regulation is blocked for a short period, activate the "Full" button. Observe that the load program lamp extinguishes and that the main engine r.p.m. immediately begin to rise. Immediately this is checked, the button must be placed in the neutral position, since the function is then working.
The third emergency button "cancelling" is best checked by activating the test slow-down or test shut-down on the safety panel in the engine manoeuvring console. Press the test button in until a slow-down takes place respectively. As soon as the main engine begins to regulate downwards, the function is cancelled by activating the cancelling button on the bridge. The main engine should now regulate upwards again in a normal manner.
The cancelling button can now be set back in the neutral position, and the cover closed over the three emergency buttons, as all functions have now been controlled.
Voltage Supply
A knob is.mounted on the Voltmeter Unit to enable all voltage groups in the control panel to be measured. Turn the knob through all 13 measuring positions and check that the voltmeter reading is always within one of the two green areas.
A reading up to 60 V is permitted in position 2, since in this case measurement takes place across the unloaded emergency supply. If the system is furnished with an emergency battery supply, its capacity should be regularly checked by placing the "Normal-battery" contact in the "Battery" position.
Now check whether the pointer of the emergency supply voltmeter in the control room manoeuvring stand remains within the green area.
Bridge Emergency Button
Open the cover which protects the three emergency buttons, and activate the STOP button.
Check that the emergency stop valve (ESV) is activated and draws the fuel pumps to "0" index. Set the button back in the neutral position after checking is completed.
Check the emergency "Full" button whilst an upward regulation through the load program is ordered, i. e. when max. r.p.m. are ordered on the bridge telegraph. As soon as the load program lamp lights up to indicate that further upward regulation is blocked for a short period, activate the "Full" button. Observe that the load program lamp extinguishes and that the main engine r.p.m. immediately begin to rise. Immediately this is checked, the button must be placed in the neutral position, since the function is then working.
The third emergency button "cancelling" is best checked by activating the test slow-down or test shut-down on the safety panel in the engine manoeuvring console. Press the test button in until a slow-down takes place respectively. As soon as the main engine begins to regulate downwards, the function is cancelled by activating the cancelling button on the bridge. The main engine should now regulate upwards again in a normal manner.
The cancelling button can now be set back in the neutral position, and the cover closed over the three emergency buttons, as all functions have now been controlled.
Voltage Supply
A knob is.mounted on the Voltmeter Unit to enable all voltage groups in the control panel to be measured. Turn the knob through all 13 measuring positions and check that the voltmeter reading is always within one of the two green areas.
A reading up to 60 V is permitted in position 2, since in this case measurement takes place across the unloaded emergency supply. If the system is furnished with an emergency battery supply, its capacity should be regularly checked by placing the "Normal-battery" contact in the "Battery" position.
Now check whether the pointer of the emergency supply voltmeter in the control room manoeuvring stand remains within the green area.
Preventive maintenance of a bridge maneuvering system is crucial for ensuring the safety and efficiency of navigation. Here's a comprehensive guide to help you establish a preventive maintenance program for such systems:1. Establish Maintenance Schedules
Daily Inspections:
- Visual Inspections: Check for visible damage or wear on the bridge maneuvering system.
- Control Systems: Test control panels, displays, and communication systems for proper operation.
- Hydraulic Systems: Inspect hydraulic lines and connections for leaks or damage.
Weekly Inspections:
- Lubrication: Ensure that all moving parts are adequately lubricated.
- Electrical Components: Check for loose connections, wear, or corrosion in electrical wiring and components.
Monthly Inspections:
- Mechanical Integrity: Inspect all mechanical components, including gears, bearings, and structural elements for signs of wear or damage.
- Hydraulic Fluids: Check hydraulic fluid levels and quality, and top off or replace as necessary.
- Calibration: Verify the calibration of sensors and control systems.
Quarterly Inspections:
- Full System Test: Perform a comprehensive test of the maneuvering system, including emergency functions.
- Software Updates: Ensure that all control system software is up-to-date with the latest patches and updates.
- Safety Systems: Test all safety systems, including alarms, emergency stops, and backup systems.
Annual Inspections:
- Detailed Inspection: Conduct a detailed inspection of all components, using non-destructive testing methods as needed.
- Professional Servicing: Hire a professional service provider to conduct an in-depth maintenance check.
- Documentation Review: Review all maintenance logs and records to identify recurring issues and areas for improvement.
2. Create Detailed Checklists
Daily Checklist:
- Visual inspection of system integrity.
- Functional test of control systems.
- Check for hydraulic leaks.
- Ensure all safety devices are operational.
Weekly Checklist:
- Lubricate moving parts.
- Inspect electrical connections.
- Clean control panels and displays.
Monthly Checklist:
- Inspect mechanical components for wear.
- Check and maintain hydraulic fluid levels.
- Calibrate sensors and control systems.
Quarterly Checklist:
- Perform comprehensive system tests.
- Update control system software.
- Test safety systems thoroughly.
Annual Checklist:
- Conduct detailed inspections using specialized equipment.
- Have professionals perform an in-depth service.
- Review and analyze maintenance records.
3. Training and Documentation
- Training Programs: Train personnel on preventive maintenance procedures and safety protocols.
- Documentation: Maintain detailed records of all inspections, maintenance activities, and repairs.
4. Spare Parts Inventory
- Critical Components: Keep an inventory of critical spare parts, such as sensors, hydraulic seals, and control system components.
- Vendor Contacts: Maintain updated contact information for suppliers and service providers.
5. Safety Protocols
- Safety Checks: Ensure that all safety protocols are followed during maintenance activities.
- Emergency Procedures: Have clear procedures in place for handling emergencies during maintenance.
6. Continuous Improvement
- Feedback Loop: Create a system for feedback from maintenance personnel to identify areas for improvement.
- Regular Reviews: Periodically review and update the maintenance program based on feedback and new developments.
By following these guidelines, you can ensure the reliability and longevity of your bridge maneuvering system, minimize downtime, and enhance overall safety.
