TRINITY LANDING PONTOON MAINTENANCE
TRINITY LANDING PONTOON MAINTENANCE
| PROJECT BRIEF |
To undertake routine maintenance works subsurface, consisting of surveys, investigations, tightening and replacement of all underwater fixings. All survey works consisted of accurate recording and photography detailing non-conformances which ultimately over a period of time provided a suitable trend analysis of problematic areas. Maintenance routines were developed from the non-conformances and trend analysis with periodic replacement of fixings undertaken bi-annually. Each fixing was correctly tightened using a hydraulic torque wrench both topside and underwater. Where the molecular structure of the fixings had been compromised either through stretching or corrosive action we had no option but to use underwater cutting equipment in which case a suitable replacement was fitted and tightened to the correct torque. Prior to fitting suitable replacements we re-bored the plate walls using hydraulic machinery. |
| RESPONSIBILITIES |
Project manager for all subsea operations. I compiled the schematic drawings for recording all works underwater whether it was routine survey and inspection or rectification. I was responsible for creating the dive management system and all logistics from fixtures and fittings to plant and machinery. |
| CLIENT |
MMC Diving Services | Cowes Harbour Commission |
| CHALLENGES |
High volume traffic due to its positioning at the entrance to Cowes Harbour made this project often challenging along with tidal waters and strong currents. Working underneath pontoons is in itself a hazardous exercise but coupled with operating hydraulic machinery and wash from passing vessels lends itself to a very high risk environment. The nature of all such works requires constant assessment, management and complex risk assessments. |
| RISK RATING |
High Risk |
| OUTCOME |
Projects completed |
