Functional loads are all loads on the pipe in operation, including all loads that act on the pipe in still water except wind, wave or current loads.
Source: API SPEC 17J, Specification for Unbonded Flexible Pipe, Third Edition, July 2008. Global Standards
Functional loads include permanent and variable loads for load-bearing structures.
Source: Guidance Notes on Petroleum and Natural Gas (Safety in Offshore Operations) Rules, 2008, Oil Industry Safety Directorate (India), 2012. Regulatory Guidance
Gravity and functional loads are loads which exist due to the unit’s weight, use and treatment in still water conditions for each design case. All external forces which are responses to functional loads are to be regarded as functional loads, e.g., support reactions and still water buoyancy forces.
Source: Rules and Regulations for the Classification of Mobile Offshore Units, Part 4, Steel Unit Structures, June 2013, Lloyd’s Register, Global Standards
For load-bearing structures, functional loads/actions as mentioned in the third subsection, mean permanent and variable loads/actions.
Source: Guidelines Regarding the Facilities Regulations, Norway, updated December 2012. Regulatory Guidance
Loads/actions caused by the physical existence, use and treatment of the facility.
Source: Regulations relating to design and outfitting of facilities, etc. in the petroleum activities (the Facilities Regulations), Norway, April 2010 (amended December 2012). Regulations