• Provide contractors with an overall briefing about the ship’s design, the CO₂ system installation, escape routes, safety features, and emergency procedures. Ensure they fully understand these details.
• Assign an Engineer Officer to Supervise and monitor the contractors throughout the duration of their work to ensure proper practices are followed.
• Inform the bridge and make an announcement about the ongoing maintenance work to ensure all crew members are aware of the situation.
• Disconnect the pilot bottle release mechanism to prevent accidental activation of the CO₂ system.
• Implement the lockout and tagout procedures to avoid unauthorized or unintentional operation of the CO₂ system.

• When a fire alarm is triggered, it will alert both the bridge and the Engine Control Room (ECR). The duty engineer must quickly verify the location and cause of the fire using the nearest manual call point.
• Inform the bridge of the fire's location, its cause, and the number of personnel in the engine room. Update the bridge about any local firefighting efforts being undertaken.
• If initial firefighting measures fail, inform the bridge and evacuate the engine room via the emergency escape route. Muster at the designated station.
• Ensure proper communication between the engine room and the bridge regarding the stopping of fire pumps, monitoring fire pump pressure, closing ventilation flaps, and shutting down fans to contain the fire.

(c) Familiarizing Staff with the System

• Ensuring the crew understands the fire alarm system, muster stations, and their respective duties during a fire alarm activation.
• Training the crew in the operation of the CO₂ system and the procedures to follow during emergencies.
• The designated engineer responsible for the system must be fully familiar with the system’s safety features, checks, and maintenance procedures.

(d) Checks and Tests Before Putting the System Back in Use

• Check the weight and pressure of the CO₂ bottles to ensure they meet the required specifications.
• Inspect the general condition of the entire system, including piping and valves.
• Ensure the contractors have completed their work correctly and no issues remain.
• Reconnect the pilot release mechanism that was previously disconnected.
• Verify that all pins are correctly in place and that all valves are returned to their normal operating positions.
• Remove all lockout and tagout devices applied during maintenance.
• Inform the bridge and announce the completion of maintenance to the crew.
• Test all alarms and safety features to confirm the system is fully operational and ready for use.