Pitting Of Ships Propellers

A fast Ro-Ro ferry under construction in a South Korean shipyard suffered pitting damage to its propellers during the fitting out period. A dispute arose between the Italian purchasers and the yard. We were instructed by the London based solicitors, acting for the purchasers, to investigate the problem and advise on the probable cause.
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Nuclear Power Station – Butterfly Valve Inspection

A 1600 mm ND butterfly valve was installed in the seawater outlet of a heat exchanger of a nuclear power station in 2001. During a routine inspection, after 34 months in service, inspectors noted that there was corrosion damage on the valve seating. We inspected the valve and also arranged for metal samples to be cut from the valve seat area for microscopic examination.
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Stress Corrosion Cracking

We were called in by an engineering contractor responsible for installing the topsides facilities on a North Sea gas production facility. Frequent failures of the immersion heaters in the calorifiers had been resulting in interruptions to the domestic hot water supply. This in turn was contributing to deteriorating industrial relations because the workers were denied hot showers at the end of their shifts.
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Corroded Valves

Supplying the holy city of Medina with water from the desalination plant at Yanbu in Saudi Arabia was a substantial undertaking. The project required installing 176 km of pipeline and around 600 valves, of which 38 were main line ball valves of up to 40 inches diameter.
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Corroded Cargo Tanks

A 19000 GRT bulk carrier, with newly repainted cargo holds, was chartered to carry a cargo of 28000 tonnes of phosphate fertilizer from Antwerp to Guatemala. On discharging the cargo, the ship’s crew observed that the paint coating on the holds was damaged and the underlying steel was rusting.
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