CADDAS 006

[Kelvin]

Subsea Controls, Hydraulics, Surfs & Subsea Structures Installations Master Class

[Lucas]

PRODUCTION CONTROL SYSTEM COMPONENTS & FUNCTIONS : TOPSIDE CONTROL UNIT : HYDRAULIC POWER UNIT (HPU)

Key hydraulic considerations are:

I. Field layout (distances between wells and to the host).
II. Number of hydraulic users (valve actuators, chokes).
III. Pressure requirements (HP and LP systems).
IV. Umbilical characteristics (tube size, tube material, elasticity, fluid compatibility).
V. Actuator characteristics (volume, pressure opening speed required, closing speed required).
VI. Number of open/close cycles in a given time period to design for.
VII. Platform features (umbilical routing, elevation above water).

The hydraulic distribution system for the EH-MUX system is open loop with valve actuator
returns vented to sea via a relief valve in the SCM.

[Lucas]

Engineering of Subsea Umbilical & Controls – Umbilical Design Requirements

Main routes for design, engineering, manufacturing, interfaces and testing of umbilicals is the International Standard ISO13628-5 Subsea umbilicals.

[Kelvin]

Engineering of SURF – Functional Requirements

API Specification 17J formally specification for Unbounded Flexible Pipe is now adopted as ISO-13628-2

[Lucas]

Great Kelvin: while ISO 13628-10 for bonded flexible pipe used vulcanize rubber

[Lucas]

Engineering of SURF: Structural Design – Tensile Load Resistance

Tensile armors cross-wound in pairs for torsional balance

[Author]

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