10176 Assessing the Possibility of Hydrogen Damage in Crude Oil Processing Equipment

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Product Number: 51300-10176-SG

ISBN: 10176 2010 CP

Author: Saleh A. Al-Sulaiman, Abdul Wahab Al-Mithin, Abdul Razzak Al-Shamari, Moavin Islam and Surya Prakash

Publication Date: 2010

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Hydrogen sulphide (H2S) in certain proportions in a process fluid (gas, gas condensate, crude oil, or a multi-phase system) in combination with the total system pressure, the pH of the environment, the CO2 content, and the chloride ion concentration can cause extensive damage to service equipment by inducing sulfide stress corrosion cracking (SSC), hydrogen stress cracking (HSC), hydrogen blistering, hydrogen induced cracking (HIC), and stress oriented hydrogen induced cracking (SOHIC). The propensity to hydrogen damage can be estimated on the basis of NACE MR0-175/ISO-15156 and also by measuring the hydrogen flux through the material of the vessel.

The present paper provides field H2S data from some crude oil/gas processing units at KOCa and its potential impact on the susceptibility of the process equipment to hydrogen damage (in particular SSC) as per NACE MR0175-ISO-15156.guidelines Limited hydrogen flux measurements and consequent hydrogen damage risk ratings from a few of these process units are also presented and compared to NACE MR-0175 predictions.

Keywords: Hydrogen Damage, Hydrogen Flux Measurement, Crude Oil Processing