DETAILED ELECTRICAL SAFETY AUDITING AND IMPLEMENTATION

Electrical Safety Audit (ESA) is a systematic approach to identify the electrical hazards in the electrical system, Audit will refer severity conditions to control electrical risks due to short circuit, overloading or loose Connection in terminals or Cable joints causes fire hazards. Government bodies are investigating to follow National Fire Protection Association (NFPA) and Indian electricity rules (1956), especially Electrical Inspector Visit site for physical examination to maintain electrical safety regulatory standards according to Central Electricity authority policy (CEA-2003 act) and to recommend measures to minimize and prevent electrical hazards could result in loss of property, production, loss of life, injuries to personnel working etc.

Electrical Safety Auditing requires various techniques and instruments. Thermography audit as a new tool for identifying hot spots diagnostic in electrical panels and wires, switch gears, cables, motors, transformers, Generators resulting in electrical hazard problems.

Insulation tester is used to determine the insulation resistance of the cables, motors, transformer, generators etc. to avoid short-circuit at low resistance values. In case of insulation failure, the primary object of connecting all the above points and apparatus to earth is to release the charge accumulated on them immediately to earth so that the person coming in contact may not experience electric shock. So proper earthing is very essential to protect and damages of electrical apparatus.

Earth tester are used to measure the earth resistance values of all the electrical system to protect from ground faults, Neutral conductor carrying Over voltages and current at the time of Lighting occurs. Similarly, various technique and instruments are applicable for electrical safety auditing procedure.

In order to explore the types of Safety Standards, Electrical Safety Audit report will formation of Indian Electricity Rules (1956) and Central electricity authority (2003) Fire safety standards for Implementation to avoid fatal accidents in power sector.

Introduction on Electrical Safety measures.
Electrical Safety Management Guidelines.
Review on electrical systems.
Observation related to Operation and Maintenance Practices.
Fire Hazards and Protection Measures.
Environmental Impact Studies.
Investigate Electrical single line diagram.
Process flow diagram.
Hazard and Effect Management Process. (HEMP)
Hazards and operational studies(HAZOP).
Major Hazard Identification, Risk assessment and control measures.
Electro static hazards and control.
Investigate Operation and Maintenance records.
Investigate Safety Management and Regulatory standards.
Electrical Preventative Maintenance relationship to Safety Management.
Investigation on Electrical Accidents, Prevention & control measures.
Recommendations on Electrical Safety Audits.
Estimation, Costing and Implementation.

Electrical Safety Auditing Methodology

Detailed plant layout diagram.
Electrical single diagram.
Electrical hazard Identification.
Thermograph hot spot detection.
Earth pit resistance Measurement (Wenner Method).
Power Quality Studies.
Cables online and offline reliability test.
Insulation resistance measurement.
Winding resistance measurement.
Recurrent surge oscillograph test(RSO).
Sweep frequency analysis.
Transformer turns ratio test.
Magnetic Balance test.
Lighting Arrestor testing.
Relays Testing.
CT and PT Testing.
Circuit Breakers Testing.
Dissolved gas analysis.
Furfuraldehyde analysis.
Magnetic Balance test’
Transformer Oil BDV test.
SF6 Dew point measurement.
Tan-delta and Capacitance Testing
Dielectric Discharge calculation (DD),
Polarization Index(PI) Measurement.
Dielectric Absorption Ratio Measurement.
Partial Discharge Measurement.
Electromagnetic core imperfection detection(ELCID).
Acoustic Emission Analysis.
Electrical system protection Audits.