Definition(s)
Pull-in head
End of pipeline acting as attachment point for the pull-in wire.
Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards
Pull-in head
Device used for terminating the end of a flowline or umbilical so that it can be loaded/offloaded from a vessel and pulled along the seabed and/or through an I-tube or J-tube.
Source: API RP 17A, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, Fourth Edition, Reaffirmed 2011. Global Standards
Pull-in head
Device used during flexible pipe installation to connect the flexible pipe end fitting to a pull-in wire, consisting of structure that connects to end-fitting and a connection that interfaces with lifting equipment.
Source: API RP 17L2, Recommended Practice for Flexible Pipe Ancillary Equipment, First Edition, March 2013. Global Standards
Pull-in heads
Pull-in heads typically consist of a flanged structure that bolts directly onto the flexible pipe end fitting, as shown in Figure 37. A pad-eye is usually welded to the other end and is used to connect to a pull-in wire. Some pull-in heads may incorporate vents to facilitate pressure testing. They are generally a nonstandard item, since they need to be dimensionally compatible with the particular end fitting being used. Thus, they are seldom re-used.
Source: API RP 17L2, Recommended Practice for Flexible Pipe Ancillary Equipment, First Edition, March 2013. Global Standards