For the North Sea, the answer is .
A pressure equalization pump unit built for BP's Valhall Flank West field explicitly complies with NORSOK R-001, along with NORSOK L-001, NORSOK S-001, NORSOK M-630, API 674, and ATEX Zone 2. Similarly, a unit built for BP Hod demonstrates the same compliance. norsok r001