PR-186-163608-R01 Resistance of TMCP Line Pipe Material to Sulfide SCC in Sour Service

PR-186-163608-R01 Resistance of TMCP Line Pipe Material to Sulfide SCC in Sour Service

Materials

This report summarizes the effort to evaluate the sour fracture toughness properties of two thermo-mechanically controlled processed (TMCP) pipes and a plate material in sour environments with different H2S partial pressures. The primary objective of the project was to measure the fracture toughness properties of two TMCP pipes and a plate material in sour environments at three levels of H2S partial pressures ranging from 0.1 psia to 200 psia. The project also evaluated the Sulfide Stress Cracking (SSC) and Hydrogen Induced Cracking (HIC) susceptibilities (for selected conditions) of materials. Constant load and constant displacement tests were performed for two of the three H2S levels to determine the initiation toughness as compared to that determined in the slow rising displacement fracture toughness (FT) tests.

Feng Gui,Ramgopal Thodla

Reports

DNV GL USA, Inc.

4/24/2019

PRCI members only

CORR

Project - Final Report

PR-186-163608-R01