Contents
Preface to Second Edition
Acknowledgements
PART 1 INTRODUCTION AND SCOPE
CHAPTER 1 The Offshore Electrical Dimension
CHAPTER 2 The Offshore Electrical Environment
PART 2 OFFSHORE ELECTRICAL SYSTEMS
AND EQUIPMENT
CHAPTER 1 Insulation and Temperature Ratings of Equipment
CHAPTER 2 Alternating Current Synchronous Generators
CHAPTER 3 Emergency Generators
CHAPTER 4 Prime Mover Selection Criteria
CHAPTER 5 Generation and Distribution Switchgear and Transformers
CHAPTER 6 Direct Current Generators
CHAPTER 7 Direct Current Switchgear
CHAPTER 8 Electrical Cables
CHAPTER 9 Motors
CHAPTER 10 Motor Control Gear
CHAPTER 11 Power Electronics (Semiconductor Equipment)
CHAPTER 12 Process Drives and Starting Requirements
CHAPTER 13 Subsea Supplies and Cathodic Protection
CHAPTER 14 Offshore Lighting
CHAPTER 15 Process Control and Monitoring Systems
CHAPTER 16 Transformers
CHAPTER 17 Telecommunications – Internal and External
PART 3 DESIGN PROJECT ORGANIZATION
CHAPTER 1 Notes on Detailed Design Project Organisation
and Documentation
PART 4 ELECTRICAL FAULTS AND PROTECTION DEVICES
CHAPTER 1 Alternator Faults and Protection Devices
CHAPTER 2 Transformer Faults and Protection Devices
CHAPTER 3 Motor Faults and Protection
CHAPTER 4 Busbar Protection
CHAPTER 5 Feeder Protection, Conductor Sizing,
Load Flow and Fault Calculation
CHAPTER 6 Calculation of Load Flow, Prospective
Fault Currents and Transient Disturbances
CHAPTER 7 Protection and Discrimination
CHAPTER 8 Power Management
CHAPTER 9 Harmonics
PART 5 INSTALLATION
CHAPTER 1 Installation Practice
CHAPTER 2 Electrical System Earthing
CHAPTER 3 Environmental Protection
CHAPTER 4 Hazardous Area Installation
PART 6 SPECIFIC SYSTEMS AND VESSEL TYPES
CHAPTER 1 Notes on Dynamic Positioning and
Ballast Control for Floating Installations
CHAPTER 2 Floating Production, Storage and
Offloading Units
CHAPTER 3 Semisubmersibles and Mobile
Offshore Drilling Units
CHAPTER 4 Self-Elevating Rigs
CHAPTER 5 Tension Leg Platforms
CHAPTER 6 Notes on Offshore Renewable Energy
Substation Platforms
PART 7 COMMISSIONING
CHAPTER 1 Introduction to Commissioning
CHAPTER 2 Generators
CHAPTER 3 Switchgear
CHAPTER 4 Protection and Control
CHAPTER 5 Large Motors
CHAPTER 6 Protection, Monitoring and Control
PART 8 RELIABILITY, MAINTENANCE AND LOGISTICS
CHAPTER 1 Reliability
CHAPTER 2 Maintenance and Logistics
PART 9 STATUTORY REQUIREMENTS AND
SAFETY PRACTICE
CHAPTER 1 Introduction to UK DCR Regulations
and the Duties of an Electrical ICP
CHAPTER 2 Preparation and Use of Performance Standards
CHAPTER 3 Notes on Safety Integrity Level
Assessment for Electrical Engineers
Appendix A Guide to Offshore Installations
Appendix B Typical Commissioning Test Sheets
Appendix C Comparison of Hazardous Area Equipment Certification
Bibliography
Index
The Offshore Electrical
INTRODUCTION
Designing for provision of electrical power offshore involves practices similar to
those likely to be adopted in onshore chemical plants and oil refineries. However, other aspects peculiar to offshore oil production platforms need to be recognised. It is suggested that those unfamiliar with offshore installations read the brief guide in PART 6 of this book before continuing further.
The aspects which affect electrical design include the following:
1. The space limitations imposed by the structure, which adds a three-dimensional
quality to design problems, especially with such concerns as
a. hazardous areas
b. air intakes and exhausts of prime movers
c. segregation of areas for fire protection
d. avoidance of damage to equipment due to crane operations
2.Weight limitations imposed by the structure which require
a. The careful choice of equipment and materials to save weight.
b. The avoidance of structurally damaging torques and vibrations from rotating
equipment.
c. The inherent safety hazards presented by a high steel structure surrounded
by sea. Such hazards require
i. Particular attention to electrical shock protection in watery
environments
ii. Good lighting of open decks, stairways and the sea surrounding platform
legs
iii. Protection of materials and components from the corrosive marine environment and avoidance of stray corrosion cells due to contact between dissimilar metals.</
