R

rat hole

See notch.

raw material

Material to fabricate parts from, specifically plates, profiles, pipes

remarks

Remark text for an object.

reference surface

A mathematical surface, most often a plane, to which a design can refer.

requisition list

A pallet can be divided into requisition lists (RLs). Material may be delivered in several separate batches.

resource

Any sort of means that is used to complete a product. Examples: manpower, storage area, lifting equipment.

revision

See drawing revision.

RL

See requisition list.

routing

• The process of defining the path in the ship for a cable, a pipe or an HVAC duct. Most often, the path for a cable follows a number of cableways. Analogously, pipe paths and HVAC paths may be defined;

• The path in a workshop or between workshops that a certain piece of material, assembly, pipe spool, takes in the manufacturing process.