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Tag: Fertilizer

War returns to Europe

Late February saw the diplomatic crisis between Russia and Ukraine abruptly devolve into all-out war, on a scale not seen in Europe since the collapse of Yugoslavia in the early 1990s – some would argue not since the end of the Second World War. At time of writing, the conflict is still barely two weeks old, but has already produced an unfolding humanitarian catastrophe, and a refugee crisis of massive proportions. But over the medium and longer term, together with the international sanctions that have swiftly followed, it also has the power to deliver an economic shock to commodities markets in particular and the world economy in general that may be as bad if not worse than the crash of 2008-9.

Incident No. 6: Corrosion in gasket area

This case study refers to the carbamate condensers and separators in the urea recirculation and hydrolyser desorber section of a urea plant, operating under normal operation at 0.3 MPa and 75°C. After 48,000 hours of operation, during the turnaround of the urea plant, the diaphragm type instruments were sent to the original equipment manufacturer for inspection and refurbishment. In addition to damage of the diaphragm, crevice corrosion was found in the gasket area (see picture) posing a health and safety risk .