IS4203 Electrical Safety Syllabus:
IS4203 Electrical Safety Syllabus – Anna University PG Syllabus Regulation 2021
OBJECTIVES:
To provide knowledge on basics of electrical fire and statutory requirements for electrical safety
To understand the causes of accidents due to electrical hazards
To know the various protection systems in Industries from electrical hazards
To know the importance of earthing
To distinguish the various hazardous zones and applicable fire proof electrical devices
UNIT I CONCEPTS AND STATUTORY REQUIREMENTS
Introduction – electrostatics, electro magnetism, stored energy, energy radiation and electromagnetic interference – Working principles of electrical equipment-Indian electricity act and rules-statutory requirements from electrical inspectorate-international standards on electrical safety – first aid-cardio pulmonary resuscitation(CPR).
UNIT II ELECTRICAL HAZARDS
Primary and secondary hazards-shocks, burns, scalds, falls-human safety in the use of electricity. Energy leakage-clearances and insulation-classes of insulation-voltage classifications-excess energy current surges-Safety in handling of war equipments-over current and short circuit current-heating effects of current-electromagnetic forces-corona effect-static electricity –definition, sources, hazardous conditions, control, electrical causes of fire and explosion-ionization, spark and arcignition energy-national electrical safety code ANSI.
Lightning, hazards, lightning arrestor, installation – earthing, specifications, earth resistance, earth pit maintenance.
UNIT III PROTECTION SYSTEMS
Fuse, circuit breakers and overload relays – protection against over voltage and under voltage – safe limits of amperage – voltage –safe distance from lines-capacity and protection of conductor-joints-and connections, overload and short circuit protection-no load protection-earth fault protection.
FRLS insulation-insulation and continuity test-system grounding-equipment grounding-earth leakage circuit breaker (ELCB)-cable wires-maintenance of ground-ground fault circuit interrupter-use of low voltage-electrical guards-Personal protective equipment – safety in handling hand held electrical appliances tools and medical equipments.
UNIT IV SELECTION, INSTALLATION, OPERATION AND MAINTENANCE
Role of environment in selection-safety aspects in application – protection and interlock-self diagnostic features and fail safe concepts-lock out and work permit system-discharge rod and earthing devices safety in the use of portable tools-cabling and cable joints-preventive maintenance.
UNIT V HAZARDOUS ZONES
Classification of hazardous zones-intrinsically safe and explosion proof electrical apparatus-increase safe equipment-their selection for different zones-temperature classification-grouping of gases-use of barriers and isolators-equipment certifying agencies.
TOTAL: 45 PERIODS
OUTCOMES:
This course would make familiar of basic concepts in electrical circuit and hazards involved in it.
Course would be helpful to understand the electrical hazards in Industries.
Students would be able to understand the operation of various protection systems from electrical hazards
Recognize different hazardous zones in Industries
REFERENCES
1. ”Accident prevention manual for industrial operations”, N.S.C., Chicago, 1982.
2. Indian Electricity Act and Rules, Government of India.
3. Power Engineers – Handbook of TNEB, Chennai, 1989.
4. Martin Glov Electrostatic Hazards in powder handling, Research Studies Pvt. Ltd., England, 1988.
5. Fordham Cooper, W., “Electrical Safety Engineering” Butterworth and Company, London, 1986.