Aluminium dome roof for fire water tank
Being slightly different from a petroleum storage tank, the dome roof at hte in Amenas gas plant was engineered with a solid counter flashing to keep sand out from the tank during sand storms. Apart from this aspect wind loads in the desert area can be quite high, so the project required the dome to be able to withstand wind speeds up to 180 kilometres per hour, which requires a stronger dome structure.
Engineering and construction of the dome
Other than just supplying the dome, CTS supported the design change of the tank by engineering the top wind girder and walkway and the interfaces between the tank shell and the dome roof. This by re-using some of the redundant materials available at site for the steel roof. As part of the usual CTS project approach a safety and installation plan were drafted out, including the lifting plan for the dome. For the installation five operators of CTS travelled to Algeria to install the dome.
CTS was able to complete the job in less than 3 weeks and met the demanding objectives of MW Kellogg that were motivating the design change for this tank.
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