Power Transmission Distribution Sys & Equipment For Hazardous Areas

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This course provides a Specific and detailed information to the Power Transmission / Distribution System Electrical Equipment & Equipment for Hazardous Areas of electrical distribution systems found in oil production plants. The type of equipment utilized in the electrical distribution systems is discussed in terms of its operation, function, role and backup capabilities and troubleshooting. The contents have been developed from a series of contents on electrical power systems, given to oil company staf

The topics have been set out in a sequence as the following:

  • Transmission and distribution systems
  • Power system Transmission and distribution protection and Circuit breakers
  • Power cables types, basic construction and standards
  • Basic Principles of Hazardous Area,

Who should Attend

  • Safety Engineers
  • Electrical or instrumentation Engineers
  • Technicians working with Hazardous Areas



Introduction of transmission & distribution system

  • Types of distribution system

Distribution system component

Distribution network configurations

Distribution system characteristics

  • Introduction to reliability and power quality
  • Transformer

Importance of transformer in power system

Voltage levels for low, medium and high

Types of transformer

Connection of transformer

Operation of transformer

Transformer coils connection

Transformer component

Parallel operation of transformer

Load control sharing of transformer

Idea of operation tap changer

Types of tap changer

  • Electrical power system component
  • Electrical system Operation Characteristics
  • Voltage rating according to IEC & IEEE
  • Power cables & OHTL construction
  • Characteristics of copper IEC 60228
  • IEC 60502
  • Cables conductors’ types
  • Cables insulation
  • Mechanical protection types for the cables and cables armoring
  • Low, medium, high and extra high cables
  • Different types of Transmission & Distribution system faults
  • Hazards of power Transmission & Distribution system faults
  • How to initiate a protection guard for the faulty region
  • The meaning of strong and weak power system
  • Selectivity and discrimination
  • Circuit breakers and fuses
  • Circuit breaker discrimination
  • Group discussion & Quiz
  • Scheme Overview & Competence
  • Personnel Safety
  • Properties of flammable materials
  • Hazard Area Classification (Zone # 0 , Zone # 1 , Zone # 2 , Class 1 Div. 1 and Class 1 Div. 2)
  • Grouping & Temperature Classification
  • Equipment Protection Types (Overview)
  • Categories & Equipment Selection

Equipment Marking

Flameproof Protection – Ex d

Increased Safety Protection – Ex e

Intrinsic Safety Protection – Ex i

Pressurized Protection – Ex p

Encapsulation Protection – Ex m

  • Explosive Atmospheres & Explosion Protection Principles.
  • Definition of a Hazardous Area.
  • Area Classification Methods.

Explosion Protection Overview (Exclusion, Containment, Energy

Limitation, Dilution & Avoidance of Ignition Sources).

Occupational Health & Safety.

Explosive Atmospheres Area Classification Techniques.

Explosive Atmospheres Area Classification Methodologies.

  • Explosion Protection Overview (Exclusion, Containment,
  • Energy Limitation, Dilution & Avoidance of Ignition Sources).
  • Zone Extents and Documentation.

EXnL equipment, EXnR equipment, EXnC equipment, EXnP equipment,

EXnq equipment, EXno equipment, EXnm equipment, EXns equipment

  • Categories, EPL’s & Marking
  • Protection Equipment Types (Electrical, Non-Electrical & Dusts)
  • Certification Processes
  • Overview (IECEx/ATEX/North America/Others)
  • ATEX Certification
  • Relationship between manufacturer & certification body
  • Quality (IECEx/ATEX and North America)
  • Working Examples and case studies