4. Designing – the process of developing design documentation Source: Order of the State Industrial Safety Inspection of Russia dated December 19, 1997 No. 221 <On Approval of "Methodological Guidelines for the Organization and Implementation of Supervision Over Designing and Manufacturing Equipment for Hazardous Production Facilities in the Chemical, Petrochemical, and Oil Refining Industries"> (along with "RD-09-167-97 )