Subsea Control System

T084-EN005

REVISION

05

STATUS

C

0517/04/19JSO

Approved

CGAVLE-HEK
0401/03/19JSO

Re-Issued for Approval

CGAVLE-HEK
0312/02/08KSL

Approved

GCOAALBCA-
0206/02/08KSL

Issued For Approval

GCOAALBCA-
0104/10/07KSL

Issued For Comments

GCOAALBCA-
0001/10/07KSL

Internal Check

GCOAAL--
Rev.DateIssued byRevision memoChecked byApproved by
Engineer approvalTotal approval

This document is the property of TOTAL. It must not be stored, reproduced or disclosed to others without written authorisation from the Company.


Contents

1. introduction
1.1. Scope
1.2. Codes, Standards, Specifications and Reference Documents
1.3. Acknowledgements
1.4. Definitions & Abbreviations
2. Control System Types
2.1. Direct Hydraulic
2.2. Piloted Hydraulic
2.3. Electro-Hydraulic
2.4. Electro-Hydraulic Multiplexed
2.5. All Electric Control System
3. Reliability and Redundancy
3.1. Reliability
3.2. Redundancy
4. Open/Closed Hydraulic Systems
5. System Architecture
5.1. General
5.2. Subsea
5.3. Hydraulic/Electrical Distribution
5.4. Number of SCM Functions
5.5. Hydraulic Distribution
5.6. Electrical Distribution
5.7. Earthing
6. System Outline
6.1. General
6.2. Topsides
6.3. Umbilical
6.4. Subsea
7. Master Control Station (MCS)
7.1. Introduction
7.2. Components
7.3. Interfaces
7.4. Emergency Shutdown
7.5. Software/Operating System/Displays
7.6. Maintenance
7.7. System Functions
8. Electrical Power Unit (EPU)
8.1. General
8.2. Components
8.3. Testing
8.4. Maintainability
9. Un-Interruptible Power Supply (UPS)
9.1. Description
9.2. Components
9.3. Testing
10. Hydraulic Power Unit (HPU)
10.1. Introduction
10.2. Basic Hydraulic Schematic
10.3. Equipment Description
11. Topsides Umbilical Termination Unit (TUTU)
11.1. Introduction
11.2. Description
11.3. Termination of Chemical Hoses
12. Umbilical
13. Subsea Umbilical Termination Unit (SUTU)
13.1. Description & Components
14. Weak Link
14.1. Description & Components
15. Subsea Distribution Unit (SDU)
15.1. General
15.2. Construction
15.3. Interface with Umbilical
15.4. Interface with SCM
15.5. Electrical Distribution
15.6. Hydraulic and Chemical Distribution
15.7. ROV Connection
16. Subsea Accumulator Module (SAM)
16.1. Introduction
16.2. Description
16.3. Components
17. Interconnections
17.1. Introduction
17.2. Fixed Stab Plate (Inboard plate)
17.3. ROV free Stab plate
17.4. Clamp Hubs
17.5. Electrical Jumpers
17.6. Hydraulic Couplers
17.7. Fibre Optic Jumpers
17.8. Jumper Deployment
17.9. Jumper Retrieval
18. Subsea Control Module Mounting Base (SCMMB)
18.1. General
18.2. Construction
18.3. Interface with SCM
18.4. Workover System Interface
18.5. Interface with Tree Valves & Sensors
18.6. Docking Alignment
18.7. Latching mechanism
19. Subsea Control Module (SCM)
19.1. General
19.2. Housing
19.3. Mounting Base
19.4. Interfaces
19.5. Connections
19.6. Hydraulic system
19.7. System Design
19.8. Electronics
19.9. Construction
19.10. Corrosion protection
19.11. Pressure Compensation
19.12. Return Line Compensation
20. Subsea Transducers/Sensors
20.1. Introduction
20.2. General
20.3. Construction
20.4. Interface with display/monitoring system
20.5. Types of Sensor
21. Multi Phase Flow Meters
21.1. Introduction
21.2. General
21.3. Materials
21.4. Construction
21.5. Functionality
21.6. Accuracy
21.7. Methods of Measurement
22. Materials
22.1. Materials Used
22.2. Coating
22.3. Cathodic Protection
22.4. Galvanic Action
23. Markings
23.1. Equipment Marking
23.2. Subsea Marking General
23.3. Marking Methods
24. Quality
24.1. Introduction
24.2. Quality Planning
24.3. Manufacture
24.4. Testing
24.5. Inspection
24.6. Conclusion
25. Running Tools
25.1. Requirement
25.2. Minimum Fit Running Tool (MFRT)
25.3. Multi-Mode Running Tool (MMRT)
25.4. Single Wire Deployment.
25.5. Drill String Deployment
26. Factory Acceptance Testing (FAT)
26.1. General
26.2. Test Requirements
26.3. Documentation
26.4. Test Parameters
27. Extended Factory Acceptance Test (EFAT)
27.1. General
27.2. Test Requirements
27.3. Documentation
27.4. Test Parameters
28. System Integration Testing (SIT)
28.1. General
28.2. Test Requirements
28.3. Documentation
28.4. Test Parameters
28.5. Post-SIT checks
29. Alternative Control Systems
29.1. Introduction
29.2. Buoy Based Control Systems
29.3. Autonomous Subsea Systems
29.4. Alternative Technology
30. High-Integrity Pressure Protection Systems (HIPPS)
30.1. Introduction
30.2. Implementation of a HIPPS
30.3. System Testing
30.4. Other concerns
30.5. Summary
A. Authors & Vendor Contact Details

List of Figures

2.1. Direct Hydraulic Control System
2.2. Piloted Hydraulic Control System
2.3. Electro-Hydraulic Control System
2.4. Electro - Hydraulic Multiplex Control System
2.5. K5F all electric subsea xmas tree
2.6. OneSubsea DC Subsea Electric Tree
3.1. CLOV – Orquidea Violeta subsea layout
5.1. KAOMBO – SSIV assembly
5.2. KAOMBO – SSIV retrievable module
6.1. Subsea Control System overview
6.2. Electro - Hydraulic Multiplex System Schematic
7.1. Dual MCS
7.2. ESD Radio Link Block Diagram
7.3. Typical Tree mimic
7.4. Typical Manifold mimic
7.5. Choke pawl and ratchet mechanism
7.6. Choke command circuit
7.7. Historical information typical display
8.1. Typical EPU
8.2. EPU cabinets A and B (Moho Nord)
8.3. EPU input monitor module (Moho Nord)
8.4. EPU Subsea Controller (Moho Nord)
8.5. EPU Modules
9.1. Typical UPS
10.1. Hydraulic Power Unit
10.2. Internals of HPU skid unit
10.3. HPU Schematic
10.4. HPU interfaces
11.1. TUTU Umbilical Termination
11.2. TUTU Block Diagram
11.3. Inside a typical TUTU
14.1. Weak Link
15.1. A typical SDU (OneSubsea design)
16.1. Subsea Accumulator Module Block Diagram
16.2. Subsea Accumulator Module
17.1. SDU Fixed Stab plates
17.2. Outboard and Inboard Stab plates shown before engagement
17.3. Outboard and Inboard Stab plates
17.4. FLOT (left picture) / TDU (right picture)
17.5. ROV Stabplate with HFL connected
17.6. Controlled Environment (CE) connector (by courtesy of Tronic)
17.7. Electrical jumper with Tronic ROV connector
17.8. Single Electrical Jumper with three outlets
17.9. EFL connector unmated (left) and mated (right) (TELEDYNE ODI connector)
17.10. EFL connector (dual oil-filled) - connection sequence (TRONIC DigiTRON connector)
17.11. SpecTRON 10kV (U) 450A Connector Systems (SIEMENS)
17.12. SpecTRON Connector Systems (SIEMENS)
17.13. Hydraulic Couplers (Parker DSL series)
17.14. Pressure Balanced Hydraulic Coupler Concept
17.15. HCR Hose & Termination Cross Section
17.16. Female / male Walther couplers with R1 profile (MeOH)
17.17. Subsea disconnectable Fibre Optic Connectors (Seacon hydralight product)
17.18. Fibre Optic Connectors at bottom of SCM mounting base
17.19. Hydraulic Jumper Deployment Frame
17.20. Electrical Jumper Deployment Frame
17.21. Electrical Jumper Deployment Basket
17.22. EFL pre-installed on cobra head
17.23. EFL pre-installed on Manifold (Moho Nord M1001 manifold)
18.1. OneSubsea design SCMMB
18.2. SCM & SCMRT being lowered on to manifold SCMMB
18.3. SCM & Running tool being lowered into the Manifold guide funnel
18.4. SCM Running tool (Aker Solutions)
19.1. OneSubsea design Subsea Control Module
19.2. FMC design Subsea Control Module
19.3. View under SCM showing hydraulic couplers and electrical connectors
19.4. Manifold block and DCV’s
19.5. DCV (Oceaneering ROTATOR AS)
19.6. DCV cross section (Oceaneering ROTATOR AS)
19.7. SCM showing Subsea Electronics Module (OneSubsea)
19.8. Subsea Electronics Module (GE)
20.1. Typical PT/TT sensor (GE Asterix product)
20.2. Typical 4-20mA Sensor Loop
20.3. Typical Sensors
20.4. Retrievable PT/TT sensor installed subsea (TECHNIPFMC Water Injection Xmas Tree of EGINA Development)
20.5. Combined Pressure / Temperature Transducer
20.6. Acoustic Sand Detector
21.1. Subsea multiphase flowmeter with recoverable electronic canister (in blue) (Emerson ROXAR MPFM)
21.2. MPFM Dynamic testing with pressurised process medium
21.3. Measurements block diagram
23.1. Identification Plates
23.2. Stencil Painted Markers
23.3. Colour Keyed Identification
23.4. Cable Markers
25.1. PXT SCM recovery - MRT with ROV
26.1. Subsea sensor simulator
29.1. East Spar Buoy
29.2. Autonomous Control System Schematic
29.3. Oil Filled Jumper with Fibre Management System
29.4. Subsea Fibre Optic Distribution
29.5. Control System Infrastructure
29.6. Functional Architecture
30.1. HIPPS Schematic
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