The Norwegian Oil and Gas Association, together with the NORSOK secretariat, provides the standards for free to encourage global safety. To get the official :
While some websites may offer free downloads of NORSOK R-001, these are often unauthorized copies. Relying on such versions poses risks: norsok r-001 pdf
Comprehensive Guide to the NORSOK R-001 PDF: Technical Requirements for Mechanical Equipment The Norwegian Oil and Gas Association, together with