scope:

This specification provides standards for the design, manufacture, design verification and factory acceptance testing of permanently installed subsea control, chemical injection, SSN and utility umbilicals for both static and dynamic applications for use in marine environments for the offshore production of hydrocarbons. The umbilicals may carry electrical services only, hydraulic or chemical functions only, or a combination of these. Other functions such a gas lift and optical fiber data communications may also be included.

The hose types contained within the umbilicals are of the fiber reinforced thermoplastic construction. The specification also covers the design requirements for low power, low frequency power and communication electric cables designed for the control of subsea production systems.

This specification may be referenced in Purchaser/Functional Specifications for umbilical systems as the detailed standard for the design, manufacture and testing of umbilicals. In compiling such Functional Specifications, sufficient prescriptive information shall be included such that the maximum benefit shall be derived from this specification. Appendix A provides information to be considered in the compilation of a Purchaser/Functional Specification such that the Manufacturer can demonstrate by design calculations, material selection, verification tests, factory acceptance and historical data tests that the umbilical will meet the functional requirements.

Installation of umbilicals is outwith the scope of this specification, however the design of the umbilicals shall take account of installation guidelines applicable to umbilicals contained within API RPI7I.