Safetech Research Institute, SRI

Room 1702, 15F,

Haitai Mansion,

229 North 4th Ring Road, 

Haidian District,

Beijing, China

100083
010-56821118,56821119
 
www.ankosri.com
Service@ankosri.com
   
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Hydrogen Sensitivity Analysis Technique
Introduction

Under hydrogen contained service environment, hydrogen atoms can permeation into internal of the metal material. This will cause hydrogen embrittlement or other damage, leading to sudden cracking and has serious threat to engineering structure safety. The hydrogen embrittlement sensitivity analysis technique focuses on the combination of service condition simulation and material degradation caused by hydrogen. The main analysis methods include hydrogen content test, hydrogen permeation test, slow strain rate tensile test (SSRT), fracture toughness test, fatigue test, and hydrogen induced cracking test, etc. Through HE risk evaluation, the service safety boundary can be built for different material under various environments.

Advantages
Hydrogen contained service environment simulation equipment (a) and (b) Internal high pressure hydrogen contained environment simulation equipment; (c) Cathodic protection simulation equipment
Hydrogen Embrittlement Risk Analysis Technology
Hydrogen permeation curves SSRT
mechanics performance test and characterization techniques (a) fracture toughness test; (b) tensile test; (c) fatigue test
• Fracture and Crack Origin Microscopic Analysis Techniques
 
Services
  • Hydrogen Embrittlement Sensitivity and Critical Cathodic Protection Potential of X80 And Higher Grade Pipeline
    The HE and HIC of X80 and higher grade pipelines was researched under typical soil characteristics of long-distance pipeline steels and negative cathodic protection potential. And based on this study, the key parameter range of cathodic protection can be built for high strength pipeline, which can guide the scene security maintenance, and assist the owner to make guidelines for HE prevention and cathodic protection.
  • Research on The Risk and Safety Scope of Hydrogen Embrittlement (HE) Caused by UHVDC Negative Interference
    Cathodic discharge interference of UHVDC earth electrode will lead to a high negative potential for pipelines. A negative polarization potential can cause hydrogen evolution reaction on the metal surface, which provides large amounts of hydrogen source for hydrogen embrittlement. We can offer system test of HE behaviors under the interference parameters of field pipelines (such as interference current, voltage and duration) and environment parameters of field soil (soil moisture content, pH value and saltiness). And based on these tests, the boundary of security service condition can be established.
  • The Applicability Evaluation of Pipeline Steel in Coal Gas Containing Hydrogen Environment
    The applicability of high strength pipeline steels was analyzed under typical coal gas containing hydrogen environment. Through test result of hydrogen embrittlement, hydrogen induced delayed cracking and hydrogen induced fatigue crack propagation, the influence of coal gas on security service life can be obtained. And we can also evaluate economic rationality of the mitigation measures; assist the owner to establish coal gas pipeline integrity management guideline.
Technical Team
  • A team of faculty advisors with decades of experience in related fields
  • a number of cross-professional senior technical experts
  • A group of technicians with a master's degree and doctoral degree
  • Undertake dozens of major failure analysis projects, has accumulated rich experience
Contact
Hydrogen embrittlement and Failure Analysis Center          TEL:+86-10-82883739/59-824          E-mail:emfa@ankosri.com
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