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SITUATION

The client required the execution of the:

• Annual Marine Loading Arm inspections
• 5-yearly Hydraulic Hose Replacement

PROBLEM

Various emergent work scopes were identified through the inspection and hydraulic hose replacement work scopes.

SOLUTION

Pressure Dynamics executed the scheduled maintenance work scopes, and various critical emergent work scopes identified. Engineering and Hydraulic Hose technical advisory service was sought from our subject matter experts in Perth as required. Additional replacement hydraulic hoses were supplied by our Products team in Perth to address critical gaps.

BENEFITS

The scheduled inspection and preventative maintenance works scopes were executed, along with various critical emergent work scopes as identified, to support ongoing safe and reliable operation of the Marine Loading Arms by the client.

Overview

Pressure Dynamics were engaged to conduct the inspection of LNG Marine Loading Arms to check for signs of any wear and tear, adverse condition, or leakage that is typical to these assets that are located and operated in a harsh marine environment.

Approach

The LNG Loading Arms were checked and inspected for damage and corrosion by a Hydraulics-specialist supervisor and a team of rope access personnel.

The following activities were conducted for each LNG Loading Arm:

• Annual Marine Loading Arm Inspection
  • Inspection of the apex bearing
  • Inspection of the fulcrum box bearing
  • Inspection of all the hydraulic cylinder pins and spherical bearings
  • Inspection of the hydraulic cylinders
  • Clean up of the hydraulic cylinder rod
• 5-yearly Hydraulic Hose Replacement

Pressure Dynamics was able to effect emergent, critical maintenance and repair works, as identified during the inspections.  Engineering and Hydraulic Hose technical advisory service was sought from Pressure Dynamics personnel in Perth as required.

Results/Benefits

All bearings were inspected, cleaned and excess grease removed.  Several instances of bearing seals being out of place were identified, which were reinstated, and the bearings re-greased.

Instances of lubrication piping bent out of shape were identified and rectified where determined safe to do so, and deteriorated lubrication flexible hoses reported for emergent works maintenance.

All slew cylinders were inspected and cleaned of accumulated dirt and debris and pitting and corrosion highlighted in the daily reports.

Broken electrical conduits for proximity sensors were observed, and highlighted for electrical inspectioon and maintenance under emergent works.

Engineering and Hydraulic Hose technical advisory service was sought from Pressure Dynamics personnel in Perth as required.  Additional replacement hydraulic hoses were supplied by our Products team in Perth to address critical gaps in the hoses free issued for the work scope.

We replaced all the supplied hydraulic hoses for the Marine Loading Arms, and red-line marked-up the Process & Instrumentation Drawings (P&IDs) as applicable.

Additional hose replacement requirements as identified were reported, for future scheduled maintenance.

All inspection findings were documented and reported, and detailed recommendations were presented on a risk-categorised and prioritised basis.

Conclusion

Pressure Dynamics conducted a thorough inspection and assessment of the LNG Loading Arms and executed maintenance and repair activities and hose replacements where required.

Detailed recommendations were presented on a risk-categorised and prioritised basis.