Section 6 Umbilical Cables
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Construction & Classification of Submersibles & Diving Systems, July 2022 - Part 6 Electrical Installations and Control Engineering Systems - Chapter 1 Electrical Installations - Section 6 Umbilical Cables

Section 6 Umbilical Cables

Parent topic: Chapter 1 Electrical Installations

6.1 General

6.1.1 Cables for the transmission of electrical power and signals from a surface support vessel, or structure, to a tethered submersible are to have stranded conductors and be constructed so that they are capable of being flexed. Similarly cables containing optical fibre elements shall be capable of being flexed without damaging the fibres. Evidence is to be submitted to show that the umbilical cable is able to withstand the flexing loads that will be experienced in service.

6.1.2 Umbilical cables are to have a sheath which is impervious to sea water, and be capable of operating at a pressure of twice the maximum operating depth.

6.1.3 Tensile loads are not to be transmitted by the electrical cables.

6.1.4 The design of the umbilical cable is to take account of the effect of its weight on the electrical conductors when fully extended.

6.1.5 Dielectric and insulation resistance tests are to be carried out, to verify the integrity of the insulation.

6.1.6 For details of the requirements for umbilicals comprising hoses and electric cables see API Specification 17E.

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