01.
Husab Mine of Swakop Uranium, Namibia
(Plant Wide Survey – Corrosion Condition Assessment – Steel Process Plant)
Commissioning of the Husab mine took place in the third quarter of 2016, since which time the mine had experienced an unexpectedly high incidence of corrosion-related failures in steel process equipment and civils infrastructure, including vessels, pipelines, valves, and pumps. DPA Specialist Consulting Engineers were contracted by Swakop Uranium, in September 2017, to investigate the corrosion issues at the mine, provide opinions as to the root causes, and recommendations for remedial measures. The corrosion inspection was undertaken by DPA’s engineers and NACE Certified Coatings Inspectors with the use of specialised corrosion monitoring & recording equipment. The scope of works included an extensive review of the Materials of Construction, and a critical assessment of process influences during commission and thereafter.
02.
Minproc: Société Des Mines De Syama, Mali
(Design Extension of Chimney Stack)
DPA were appointed by Somisy, through G.R.D Minproc Limited, to carry out the design for the extension of the existing chimney stack from approximately 76m to 100m. The existing Chimney Stack was found to be too short to support adequate dispersion into the atmosphere to meet the environmental criteria. The stack had previously been subjected to an explosion at low level which had some distortion effect in the structure. The stack was extended and fitted with guy wires to restrict movement.
03.
Single Buoy Mooring (SAPREF)
(Anti-Corrosive Coating and VpCI)
DPA provided SAPREF with the design and specifications for the application of anti-corrosive coatings for the offshore single buoy mooring. DPA were also responsible for the monitoring of quality control procedures associated with the application of the coating system.
This was one of DPA’s earlier successes with VpCI (Vapour Phase Corrosion Inhibitor) technology.
04.
Richards Bay Bulk Storage (RBBS) Butane Sphere
(Anti-Corrosive Coating & Thermal Insulation)
DPA Specialist Consulting Engineers were appointed to develop a technically advanced coatings and insulation system, primarily for use on cold storage vessels. The contract comprised of remedial anti-corrosion coatings, fireproofing, insulation, and vapour barrier application to four (4) of the RBBS Butane Spheres.
05.
East London Industrial Development Zone (Elidz) Sea Water Pump Station
(Steel Corrosion Assessment of Failed Saltwater Fish Farm Water Uptake Station)
DPA were appointed to review the corrosion experienced at Elidz Sea Water Pump Station and determine the principal cause of corrosion at the valve and other flanges.
