Hydrogen embrittlement of Nickel-based alloys
HISCinNi: a DNV Joint Industry Project
Developing practical guidelines for the use of Nickel-based alloys for subsea applications.
Challenge
There have been several reported failures in Nickel-based components in critical subsea applications the recent years (e.g., Alloy 716, Alloy 725, Alloy 625 grade 1, and Alloy 718).
Objective
To develop practical guidelines for use of Ni-based alloys for subsea applications.
Benefits/Deliverable
The aim of the HISCinNi JIP is to provide the industry with practical guidance related to design, installation, and operation of subsea components in Ni-based alloys. The focus will be on connecting material HISC resistance, load, and geometry in a similar manner as in the design code DNV-RP-F112.
Project details
DNV manages the project and the following participants take part:
- Equinor
- Vår Energi
- Aker BP
- Gassco
- OKEA
- Wintershall Dea
- Aker Solutions
- Baker Hughes
- Technip FMC
- Subsea Design
- Sval
- voestalpine BÖHLER Edelstahl GmbH & Co KG
- Havtil.
Project status
The JIP was kicked off in December 2022 and will be concluded in the end of 2024.