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|Title:||Testing of Welded 2.25Cr-1Mo Steel, in Hot, High-Pressure Hydrogen under Creep Conditions|
|Authors:||MANNA GIUSTINO; CASTELLO PAOLO; HARSKAMP FREDERIK; HURST ROGER; WILSHIRE B.|
|Citation:||Proceedings of the International Conference WELDS 2005|
|Type:||Contributions to Conferences|
|Abstract:||The standard 2.25Cr-1Mo steel and its weldments may experience, under hydroprocessing conditions, degradation by "hydrogen attack", which is responsible for several accidents occurring in the history fo the industry. The selection of the structural steels is still based on the empirical Nelson curves which do not provide information on the behaviour of weldments. This causes uncertainties in the definition of the safety boundaries for plants operation. The results of the present study confirm that weldments are a weak point of thre pressurized components and suggest that the HAZ, in particular the ICHAZ, is the most sensitive zone to hydrogen attack.|
|JRC Institute:||Institute for Energy and Transport|
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