Risk level Norwegian Petroleum industry.
Source: Norwegian Oil and Gas Association, Guideline No. 135, Recommended Guidelines for Classification and categorization of well control incidents and well integrity incidents, Rev. 4, 27 June 2017, National or Regional Standards
Risikonivå i norsk petrolumsvirksomhet (Risk level in Norwegian petroleum activity) – see also RNNS.
Source: 117 OLF, Norwegian Oil and Gas Association recommended guidelines for Well Integrity, No. 117, Revision No. 4, June 2011. Global Standards