Norsok L-001 is a standard for the Norwegian offshore industry, specifically dealing with the design and testing of drilling and production risers. Here is some general information about the standard:

Unfortunately, I couldn't find a free and legitimate source to download the Norsok L-001 PDF. The standard is owned by the Norwegian oil and gas industry, and it's not publicly available for free download.

As I couldn't find a free PDF download, I assume you meant to ask about the content of the standard. The Norsok L-001 standard provides detailed guidelines and requirements for the design, testing, and documentation of drilling and production risers. It covers various aspects, including design, materials, fabrication, testing, and safety considerations.