Table of Contents
What is a HIC test?
Hydrogen Induced Cracking (HIC) test is used to assess the susceptibility of carbon and low alloy steel material to hydrogen induced cracking in wet H2S/sour service operating environments mostly found in the Oil & Gas industry.
How is HIC testing performed?
HIC test method– NACE TM0284 Element performs HIC testing in accordance with NACE TM0284 by exposing unstressed test specimens to the specified environment saturated with hydrogen sulfide gas at 1 bar pressure for a duration of 96 hours for the standard test.
What is HIC and SSC test?
In high-strength steels cracks can arise in the zone that had been affected by heat in weld seams due to the action of mechanical stress in atmospheres containing hydrogen sulphide. The testing of materials with regard to this damage mechanism, “Sulphide Stress Cracking“ (SSC) is done in accordance with NACE TM 0177.
Is HIC applicable for SS material?
ONE OF THE REASON WHY HYDROGEN-INDUCED CRACKING (HIC) TESTING NOT REQUIRED FOR AUSTENITIC STAINLESS STEEL MENTIONED IN NELSON CURVE.
What is HIC requirements?
The test requires evaluation of pH values of the test solution before exposure and after the exposure. HIC test specimens are cut into sections and examined under a microscope for hydrogen-induced corrosion cracks.
What is HIC resistant material?
HIC Resistant Steel is carbon steel which is tested to demonstrate the plate’s resilience to the long term effects of hydrogen induced cracking, tested according to NACE.
What is the difference between SSC and HIC?
SSC (sulphide stress cracking) and HIC (Hydrogen induced caking) are two different forms of hydrogen related mechanisms of damage of a materials. The “basic” difference between the two is that is the first, SSC ,you need “stress” in the second HIC you don’t need “stress”.
What is HIC requirement?
When is HIC applicable?
Hydrogen Induced Cracking (HIC) in the Oil and Gas Industry Particularly common to the Oil and Gas Industry where the use of steel pressure vessels is widespread, the risk of this should be considered when hydrogen sulphide partial pressure becomes greater than 3.5mbar.
What does HIC mean in medical terms?
HIC
| Acronym | Definition |
|---|---|
| HIC | Head Injury Criterion |
| HIC | Health Insurance Commission |
| HIC | Han Solo in Carbonite (Star Wars) |
| HIC | Health Insurance Claim |
Why NACE is required?
NACE MR0175 is titled: Petroleum and Natural Gas Industries — Materials for use in H2S-containing environments in oil and gas production. It was issued as a recommendation of threshold limits of H2S above which precautions against environmental cracking are considered necessary.
What causes hydrogen induced cracking?
Hydrogen Induced Cracking (HIC) is a common form of wet H2S cracking caused by the blistering of a metal due to a high concentration of hydrogen. The blistering damage tends to form parallel to the surface and to the direction of hoop stress.