Promech were engaged by Metrotech to provide mechanical design and code compliance review services for the detailed design for the upgrade of two 36.6m diameter, 14,600 m³ capacity heavy fuel oil storage tanks, namely TK-201 and TK-202. The tank upgrade projects were initiated as a result of API tank inspections undertaken on the tanks following almost 20 years in service. Promech’s scope for the tank upgrade projects included the design of the following items:
- Complete and partial floor replacements
- Shell plate patching and upper strake replacement
- New tank nozzles, manholes, sumps and access door sheets
- Existing nozzle compliance assessments
In addition to the tank upgrade design work, Promech also completed the detailed design, in accordance with API 2201, for two hot taps to be installed on an existing filtered water pipeline.
Furthermore, Promech worked closely with Metrotech and the construction contractors to develop construction methodologies and provide clear guidance on examination and testing requirements.
Promech’s key project achievements included:
- Development of API code compliant floor replacement methodologies without the requirement for tank jacking equipment which was not available at Lihir Island
- Development of API code compliant upper strake replacement methodology which was successfully implemented on-site
- Completed detailed design and assisted construction contractor to successfully undertake their first hot tap installation
Client: Queensland urban Utilities
Project Location: Brisbane, QLD
Structural, mechanical and piping (SMP) design
Safety in Design (SiD)workshop facilitation