Coating of Lock Gates and further Components of Corumana Dam in Mozambique
Added: (Tue Nov 10 2020)
Pressbox (Press Release) -
Mozambique: The Corumana dam at the river sabie was started operating in 1990. Due to the civil war and financial limitations, the works were not completed and the floodgates could not be installed. Last summer, the corroded lock gates and further components were refurbished with the high-performance coatings of Ceramic Polymer and were finally built-in. Now the metal parts of the dam are prepared for durable use in the water.
By the installation of the lock gates, the storage capicity of the Corumana dam could be increased from 720 million to 1.25 billion cubic meters, which is a high contribution for the production of more food in this area of Maputo province in Mozambique.
The changing humid climate (wet and dry seasons with high temperatures) in Mozambique as well as the constant contact with the water accelerate corrosion of metal componants. Furthermore, the parts of the dam are exposed to high mechanical friction. Thus, best performance coating products were needed for this demanding field of application.
The coating systems PROGUARD CN 200 and PROGUARD 169 (37) provide high-grade resistances and outstanding physical properties. The products were applied by airless spraying method or conventional handtools.
Corrosion protection applications Corumana dam:
Gates, linkages, lashing strips, gate wheels : 465 m2
Trash rack grapple: 25 m2
Jet valve: 59 m2
Radial gate, wheels, suspension systems : 346 m2
PROGUARD CN 200 and PROGUARD 169 (37) – Corrosion Protection on highest Level
All metal components were equipped with PROGUARD CN 200, our premium epoxy coating for reliable and durable protection against corrosion in aggressive marine and industrial environments. The parts, which are exposed to air and sunlight where additonally coated with PROGUARD 169 (37). Our topcoat features high protective properties in accordance with ISO 12944-2, corrosivity class C5.