Loss of ductility due to hydrogen absorption, exacerbated by subsea cathodic protection. 3. Testing and Qualification Protocols
Specifies maximum hardness limits (often aligning with NACE MR0175/ISO 15156) to reduce susceptibility to sulfide stress cracking.
Disclaimer: The information in this article is for educational purposes. Always consult the full, current standard from AMPP/NACE before making engineering decisions.
Outlines the appropriate use of duplex stainless steels, nickel alloys, and titanium in deepwater applications. nace rp 0391 pdf
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: Typically kept under 2 to 3 feet per second (0.6 to 0.9 m/s) for carbon steel.
Originally established in 1991 and revised in 2001 and 2016, this document (full title: Materials for the Handling and Storage of Commercial Concentrated Sulfuric Acid ) provides recommended practices for tanks and piping, aiming to prevent corrosion-related failures. Scope and Purpose Loss of ductility due to hydrogen absorption, exacerbated
This standard is not a casual recommendation but a compilation of critical, empirically-derived technical data crucial for safe plant operation. Here are some of its most important requirements:
Deepwater environments (typically defined as water depths greater than 1,000 meters or 3,300 feet) introduce a combination of severe stress factors:
: Design must account for the continuous generation of hydrogen gas, which can be an explosion hazard if trapped. Disclaimer: The information in this article is for
| Edition | Designation | Publication Date | Status | Page Count | Key Notes | | :--- | :--- | :--- | :--- | :--- | :--- | | | NACE RP0391-91 | 1991-01-01 | Historical | — | Initial release | | 2nd Edition | NACE RP0391-2001 | 2001-06-15 | Inactive | 13 | ISBN 1-57590-126-9 | | Current Edition | NACE SP0391-2016 | 2016-03-31 | Active | — | Replaced RP0391-2001 |
NACE International updates standards every 5 years to reflect new industry research, failure data, and safety regulations.