API 540 : 1999 : R2006

1 INTRODUCTION
   1.1 Purpose
   1.2 Scope
   1.3 References
2 CLASSIFIED LOCATIONS OR ELECTRICAL EQUIPMENT
   2.1 Purpose
   2.2 Scope
   2.3 Classification of Flammable and Combustible
         Liquids and Gases
   2.4 Classification of Locations
   2.5 Electrical Equipment for Classified Locations
   2.6 Alternative Design in Classified Locations
3 ELECTRICAL ENERGY EFFICIENCY
   3.1 Purpose
   3.2 Scope
   3.3 The Role of Electrical Efficiency
   3.4 Definition of Efficiency
   3.5 Specification Considerations
   3.6 Economic Evaluation
   3.7 Cogeneration and Energy Recovery
   3.8 Design Considerations
   3.9 Relationship to Power Factor
   3.10 Definitions and Conversion Factors
4 FACILITY POWER SYSTEMS
   4.1 Purpose
   4.2 Scope
   4.3 Power Sources
   4.4 System Voltages
   4.5 Power System Arrangements
   4.6 Power System Studies
   4.7 System Protection
   4.8 Fuses
   4.9 Circuit Breakers
   4.10 Switchgear
   4.11 Transformers
   4.12 Overhead Electric Power Distribution
5 Grounding and Lightning Protection
   5.1 Purpose
   5.2 Scope
   5.3 Static Electricity and Stray Currents
   5.4 System Grounding
   5.5 Equipment Grounding
   5.6 Connections to Earth
   5.7 Lightning Protection
6 MOTORS AND CONTROLLERS
   6.1 Purpose
   6.2 Scope
   6.3 Motor Rating and Efficiency
   6.4 Relative Locations of Motors and Controllers
   6.5 Frequencies
   6.6 Standard Voltage for Motors
   6.7 Motor Voltage Selection
   6.8 Temperature and Altitude Considerations in
         Motor Applications
   6.9 Other Conditions Affecting Design and
         Application
   6.10 Types of Motor Construction
   6.11 Installation
   6.12 Construction of Totally Enclosed Motors
   6.13 Motors for Class I Locations
   6.14 Motors for Class II Locations
   6.15 Motor Service Factor
   6.16 Frequency of Starting
   6.17 Temperature, Vibration and Current Indicators
   6.18 Conduit or Terminal Box
   6.19 Space Heaters
   6.20 Bearings and Lubrication
   6.21 Torque Requirements
   6.22 Method of Starting
   6.23 Motor Controllers
   6.24 Application of Motor Control
   6.25 Means of Disconnection
   6.26 Coordination of Controller Applications With
         Fuses or Circuit Breakers on Low-Voltage
         Systems
   6.27 Overload Protection: Special Applications
   6.28 Voltage Limitations
   6.29 Application of Outdoor and Indoor Types
   6.30 Pushbutton Stations
   6.31 Additional References
7 LIGHTING
   7.1 Purpose
   7.2 Scope
   7.3 Definition of Terms
   7.4 Lighting Facilities
   7.5 Luminaires
   7.6 Light Quality
   7.7 Illuminance
   7.8 Installation Initial Values
   7.9 Lighting System Power Supply
   7.10 Emergency Lighting
   7.11 Design Considerations
   7.12 Estimating Electric Power Requirements
   7.13 Illuminance Meters
8 WIRING
   8.1 Purpose
   8.2 Scope
   8.3 General
   8.4 Conduit Systems
   8.5 Electrical Metallic Tubing
   8.6 Busways
   8.7 Wireways
   8.8 Cable Trays
   8.9 Manholes and Above Grade Pull Points
   8.10 Wire and Cable
   8.11 Fireproofing
9 POWER SYSTEMS FOR INSTRUMENTATION AND PROCESS
   CONTROL
   9.1 Purpose
   9.2 Scope
   9.3 Basic Design Criteria
   9.4 Design Considerations
   9.5 Electric Power Systems
   9.6 Distribution System
   9.7 Wiring Methods
   9.8 System and Equipment Grounding
   9.9 Considerations for Classified Locations
10 SPECIAL EQUIPMENT
   10.1 Purpose
   10.2 Scope
   10.3 General
   10.4 Communication Systems
   10.5 Supervisory Control and Data Acquisition
         Equipment (SCADA)
   10.6 Closed-Circuit Television (CCTV)
   10.7 Obstruction and Warning Lighting
   10.8 Navigation Lighting
   10.9 Fire Alarm Systems
   10.10 Electric Heat Tracing
   10.11 Cathodic Protection Systems
   10.12 Desalters and Precipitators
   10.13 Portable Equipment
11 INHERENT ELECTRICAL SAFETY
   11.1 General
   11.2 References
   11.3 Specifics
APPENDIX A - (INFORMATIVE) INHERENT SAFETY
             CONSIDERATIONS

Provides information on electrical installations in petroleum facilities.