Definition(s)
Reel
Large-diameter structure used for storage of long lengths of flexible pipe, which rotates about a horizontal axis.
Source: API RP 17B, Recommended Practice for Flexible Pipe, Fourth Edition, July 2008. Global Standards
Reel
Device for storing, transporting, or installing umbilicals or components comprised of two flanges, separated by a barrel, with the barrel axis normally being horizontal. NOTE Reels are designed for the intended use.
Source: API SPEC 17E, Specification for Subsea Umbilicals, Upstream Segment, Fourth Edition, October 2010. Global Standards