Research report on characterization and monitoring of cracking in wet H{sub 2}S service

Journal Article · Tue Nov 01 04:00:00 EST 1994 · Bulletin - Welding Research Council

OSTI ID:69967

Cayard, M S; Kane, R D; Kaley, L; Prager, M

This report presents the experimental methods and findings of a research program of MPC entitled ``Characterization and Monitoring of Cracking in Wet H{sub 2}S Service``. The two main objectives of the program were to study the performance in wet H{sub 2}S of welded steel plate of various qualities and microstructures, and evaluate the effectiveness of NDE techniques to characterize and monitoring the cracking. To accomplish these objectives, a series of large scale exposure tests were conducted with steel panels (referred to herein as ``windows``) containing welds and attachments welded into a fabricated steel vessel filled with a pressurized H{sub 2}S containing solution. Experiments were performed using windows comprised of conventional, low sulfur, ultra-low sulfur and advanced thermo-mechanically controlled processed steels per the ASTM A516-70 and A841 specifications using various weld fabrication methods. Characterization and monitoring of internal cracks resulting from Hydrogen Induced Cracking (HIC), Stress Oriented Hydrogen Induced Cracking (SOHIC) and Sulfide Stress Cracking (SSC) was accomplished at various pressures, solution pH, H{sub 2}S content, and time. Methods utilized included: (1) manual and automated ultrasonic testing, (2) wet fluorescent magnetic particle testing, and (3) acoustic emission. The results of these nondestructive techniques were confirmed using metallographic sectioning following exposure.

• OSTI ID: 69967
• Journal Information: Bulletin - Welding Research Council, Journal Name: Bulletin - Welding Research Council Journal Issue: 396; ISSN 0043-2326; ISSN WRCBA2
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
ACOUSTIC EMISSION TESTING
CORROSIVE EFFECTS
CRACK PROPAGATION
HYDROGEN EMBRITTLEMENT
HYDROGEN SULFIDES
MAGNETIC TESTING
NONDESTRUCTIVE TESTING
PIPELINES
PRESSURE VESSELS
RELIABILITY
SERVICE LIFE
STEELS
STRESS CORROSION
SULFUR CONTENT
SURFACE CLEANING
ULTRASONIC TESTING
WELDED JOINTS