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About This Item


Full Description

This specification defines the technical requirements for safe, dimensionally and functionally interchangeable ancillary equipment that is designed and manufactured to uniform standards and criteria.

Minimum requirements are specified for the design, material selection, manufacture, testing, documentation, marking, and packaging of ancillary equipment used in flexible pipe systems and subsea umbilical systems, with reference to existing codes and standards where applicable. See API 17L2 for guidelines on the use of ancillary equipment.

The applicability relating to a specific item of ancillary equipment is stated at the beginning of the particular section for the ancillary equipment in question.

This specification applies to the following ancillary equipment:
  • bend stiffeners;
  • bend restrictors;
  • bellmouths;
  • buoyancy modules and ballast modules;
  • subsea buoys;
  • tethers for subsea buoys and tether clamps;
  • riser and tether bases;
  • subsea buoy clamps;
  • tether clamps;
  • piggy-back systems;
  • repair clamps;
  • I/J-tube seals;
  • pull-in heads/installation aids;
  • connectors;
  • load-transfer devices;
  • mechanical protection;
  • fire protection;
  • VIV (vortex-induced vibration) suppression strakes.

Document History

  1. API Spec 17L1


    Specification for Ancillary Equipment for Flexible Pipes and Subsea Umbilicals, Second Edition

    • Most Recent
  2. API Spec 17L1 (R2020)

    Specification for Flexible Pipe Ancillary Equipment, First Edition, Includes Errata 1 (2015), Errata 2 (2015)

    • Historical Version