Precision Laser Cleaning (PLC) was selected to remove corrosion from the elevator shafts of a Royal Australian Navy Landing Helicopter Dock (LHD) ship. The project focused on eliminating surface oxides and corrosion from the rail runners using advanced laser cleaning technology. This ensured smoother operation, improved performance, and extended the lifespan of the asset, demonstrating the effectiveness and precision of PLC's corrosion removal services.
The Challenges
The project presented several challenges, particularly around dust control, access, and coordination with other trades and services during the vessel's maintenance program.
Key challenges included:
Containment: The works were required within a live ammunition elevator lift, meaning that a methodology was needed that did not rely on extensive containment or encapsulation, while still ensuring the safety and efficiency of the operation.
Vertical Access: The project required working at heights of up to 50m, making traditional access methods like EWPs (Elevated Work Platforms) or scaffolding impractical. A suitable methodology that could access these areas directly from existing structures was needed.
Dust Control and Sensitive Areas: Given the nature of the equipment, it was essential to employ a dust-free, dry process to avoid contamination of sensitive areas within the shaft, the rail runners, and adjacent workspaces.
The Solution
PLC deployed its proven laser cleaning methodology to meet the site requirements and overcome the unique challenges presented:
Containment: No containment measures were required for the project as the laser cleaning process does not involve abrasive media or chemicals. This ensured minimal disruption and maintained operational efficiency throughout the process.
Vertical Access: PLC deployed one of its 500W Pulsed laser systems directly onto the lift platform, allowing the team to clean the rail runners systematically from top to bottom, all while remaining in situ. This avoided the need for scaffolding or additional equipment.
Dust Control and Sensitive Areas: The corrosion debris and fumes generated during cleaning were captured using inline HEPA extraction systems. This ensured dust or debris did not enter critical areas or sensitive equipment within the shaft, while also protecting adjacent trades and workspaces.
The Outcomes
PLC’s solution enabled the safe and efficient completion of corrosion removal within the ammo lift, ensuring minimal disruption to ongoing works on the vessel.
Dust and Debris-free: The methodology ensured the entire project was completed dust and debris-free, with no interruption to other work areas or trades, preserving the integrity of the ongoing maintenance program.
Effective Corrosion Removal: The rails within the lift shaft were thoroughly cleaned, removing all corrosion and ensuring the equipment’s smooth and efficient operation moving forward.
Cost Savings: The absence of extensive containment systems, scaffolding, and cleanup typically required with abrasive blasting methods resulted in significant cost savings for the customer.
Reduce Maintenance Downtime for Maritime Vessels
This project highlights the significant advantages of laser cleaning for naval and maritime vessels, particularly in sensitive or confined spaces. The lack of abrasive media, chemicals, and the need for containment structures makes this methodology an ideal choice for maintenance programs and outages, offering both safety and cost efficiencies. PLC’s laser cleaning solutions are particularly effective in extending the lifespan and functionality of naval assets while reducing downtime.