IOCL Syllabus 2026 - Overview
| Grade | Post(s) | Syllabus Type |
|---|---|---|
| E0 | Diploma Electrical | Domain Knowledge (18 topics) |
| E0 | Diploma Mechanical | Domain Knowledge (14 topics) |
| E0 | Diploma Safety | Domain Knowledge (9 detailed topics) |
| A0 | Quality Control | Domain Knowledge (4 sections) |
| A | Chemical Engineering | Domain Knowledge (9 topics) |
| A | Electrical Engineering | Domain Knowledge (10 topics) |
| A | Instrumentation | Domain Knowledge (10 topics) |
| A | Mechanical Engineering | Domain Knowledge (8 topics) |
| A | Electronics and Communication Engineering | Domain Knowledge (8 topics) |
| A | Civil Engineering | Domain Knowledge (7 topics) |
| A | Computer Science and Information Technology | Domain Knowledge (10 topics) |
| A | Law | Domain Knowledge (substantive + procedural laws) |
| A | MBA (Marketing Management) | Domain Knowledge (31 topics) |
| All Posts | All Grade E0, A0 and A posts | General Aptitude - Verbal Ability, Quantitative Aptitude, Logical Reasoning |
IOCL Executive Syllabus 2026 - Direct Link
| Syllabus | Direct Link |
1. Verbal Ability of English Language Syllabus
- Basic vocabulary: words, idioms, and phrases in context
- Reading and comprehension
- Narrative sequencing
2. Quantitative Aptitude Syllabus
- Data interpretation: data graphs (bar graphs, pie charts, and other graphs representing data)
- 2- and 3-dimensional plots, maps, and tables
- Mensuration and geometry, elementary statistics and probability
3. Logical Reasoning Syllabus
- Logic: deduction and induction, analogy, numerical relations and reasoning
1. IOCL Diploma Electrical Syllabus (Grade E0)
- Introduction to Electric Generation Systems
- Electrical Circuit Theory
- Electrical Machines
- Electronic Devices and Circuits
- Power Electronics
- Electrical and Electronic Measurements
- Digital Electronics
- Transducers and Signal Conditioners
- Electric Power Transmission and Distribution
- Microcontroller, Programmable Logic Controller and Microprocessor
- Electrical Estimation, Energy Auditing and Energy Conservation
- Electrical Properties of Materials
- Electrical Machine Controller
- Control Systems - Analysis and Modelling
- Signals and Systems
- Illumination Practices
- Building Electrification
- Renewable Energy Power Plant
2. IOCL Diploma Mechanical Syllabus (Grade E0)
- Basic Mechanical Engineering
- Computer Aided Machine Drawing
- Material Science and Engineering
- Fluid Mechanics and Hydraulic Machinery
- Manufacturing Engineering
- Thermal Engineering
- Measurements & Metrology
- Strength of Materials
- Advanced Manufacturing Processes
- Theory of Machines & Mechanisms
- Industrial Engineering & Management
- Design of Machine Elements
- Production and Operations Management
- Pneumatic Tools and System
3. IOCL Diploma Safety Syllabus (Grade E0)
- Fundamentals of Industrial Safety, importance of workplace safety, safety laws and regulations
- Occupational Health and Safety Standards, Safety Management Systems (SMS)
- Hazard Identification and Risk Assessment (HIRA), Personal Protective Equipment (PPE)
- Emergency Response Planning, Accident Investigation and Reporting
- Types of industrial hazards (physical, chemical, biological, ergonomic)
- Fire and explosion hazards, electrical hazards and safety measures
- Chemical exposure and toxicity management
- Noise and vibration hazards, confined space safety, working at heights safety
- Machine guarding and Lockout/Tagout (LOTO), radiation hazards and control measures
- Causes and classification of fires, fire prevention strategies
- Fire detection and alarm systems, fire extinguishers (types and usage)
- Fixed fire suppression systems (sprinklers, CO2, foam)
- Emergency evacuation procedures, fire safety drills and training
- Flammable and combustible material handling
- Basics of electrical safety, electrical accidents and their causes
- Electrical protective devices (circuit breakers, fuses, RCDs)
- Earthing and grounding systems, electrical maintenance best practices
- Lockout/Tagout (LOTO) procedures, safe use of electrical tools and equipment
- Introduction to mechanical hazards, safe use of industrial machinery
- Importance of preventive maintenance, lubrication and wear prevention
- Bearing and gear maintenance, vibration analysis for fault detection
- Failure Modes and Effects Analysis (FMEA), safety in heavy machinery operations
- Classification of hazardous substances, Safety Data Sheets (SDS) and labelling
- Safe storage and transportation of chemicals, chemical spill management and response
- Toxicology and exposure limits, personal protective measures for chemical handling
- Hazardous waste management and disposal, industrial ventilation and fume control
- Safety mandates for bulk storage tanks, pipelines, gas cylinders, and hazardous chemical transportation
- Safety in excavation, scaffolding, demolition, piling, and working at heights
- Confined space entry protocols, work permits, and safety during shutdowns
- The Environment Protection Act, 1986: rules on hazardous waste management, air, and water pollution control boards
- The Petroleum Act, The Explosives Act, and The Building and Other Construction Workers (BOCW) Act
1. IOCL Chemical Engineering Syllabus (Grade A)
- Engineering Mathematics
- Process Calculation & Thermodynamics
- Fluid Mechanics & Mechanical Operations
- Chemical Reaction Engineering
- Instrumentation & Process Control
- Plant Design and Economics
- Heat Transfer
- Mass Transfer
- Chemical Technology
2. IOCL Electrical Engineering Syllabus (Grade A)
- Engineering Mathematics
- Electrical Machines
- Power Systems
- Control Systems
- Electric Circuits
- Electromagnetic Fields
- Signals and Systems
- Electrical and Electronic Measurements
- Analog and Digital Electronics
- Power Electronics
3. IOCL Instrumentation Syllabus (Grade A)
- Engineering Mathematics
- Control Systems
- Analog Electronics
- Digital Electronics
- Electricity and Magnetism
- Electrical Circuits and Machines
- Signals and Systems
- Measurements