NACE 8X194

The objective of this technical committee report is to provide a state-of-the-art overview of the materials selection, fabrication, postweld heat treatment (PWHT), inspection, and testing practices that have recently been applied to new pressure vessels (referred to in this report as equipment) destined for use in wet hydrogen sulfide (H2S) refinery service. This report is intended as a technical resource for material manufacturers, fabricators, and users involved in the specification and fabrication of new equipment used in wet H2S refinery services.