tpl electrical safety230311

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Safety Instructions in chemical industries

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  • 1.ELECTRICAL SAFETY AUDIT K. R. Govindan Kavoori Consultants 22, Janakiraman street, West Mambalam Chennai, 600 033. Tele: 044 24846139

2. SCOPE OF SAFETY AUDIT

  • Inspection ofthe electrical equipments and components of a system for
  • safe installation,
  • adequacy for normal load and
  • fault levels,
  • safety for normal operation

3. System equipments and components :

    • High tension power incoming feeder, isolator and breaker arrangements
    • Power and distribution transformers
    • Primary power distribution system,
    • Secondary bus duct / cable arrangements
    • Secondary panel, breakers
    • Indication and annunciation arrangements

4. System equipments and components :

    • Grounding arrangements
    • Earthing stations and system,
    • Feeder arrangements,
    • Neutral grounding and equipment grounding effectiveness,
    • Cables galleries, tunnels, ducts, laying arrangements and fire protection
    • Distribution substations
    • M V and LV switchgear and MCC stations
    • Battery bank and battery room

5. System equipments and components :

    • Grounding arrangements
    • Earthing stations and system,
    • Feeder arrangements,
    • Neutral grounding and equipment grounding effectiveness,
    • Cables galleries, tunnels, ducts, laying arrangements and fire protection
    • Distribution substations
    • M V and LV switchgear and MCC stations
    • Battery bank and battery room

6. System equipments and components :

  • Lighting distribution:
  • Lighting panels
    • Fire alarm and mulsifier systems
    • Electrical installations in Process Areas
    • Electrical installations in Utilities,
    • Effluent and Water Treatment Plants,
    • Investigation in to recent electrical accidents and cause analysis,

7. System equipments and components :

    • Fire water system and Main and jockey pumps for their control systems,
    • Static protections employed in hazardous material handling areas,
    • Selection of enclosures for electrical control and
    • power equipments in hazardous areas,
    • Emergency stand-by power:

8. System equipments and components :

  • Records
    • Electrical failures records and cause analysis.
    • Operation, Maintenance of these equipments,
    • Preventive and predictive maintenance practices and

9. System equipments and components :

    • routine tests carried out on control gears from the safety angle of view,
    • Compliance with Safety and Statutory Requirements
    • Hazardous area classification and equipment compliance.

10. Operation and maintenance practices

  • Permit work clearances and procedures
  • Safety precautions and practices
  • Normal and emergency operation and procedures
  • Compliance with Safety and Statutory Requirements:

11. Personnel protective appliances and implements:

  • Adequacy of protective gears available
  • Adequacy of metering and measuring equipments
  • First aid and safety practices

12. Fire and safety:

  • Electrical Fire fighting equipments and systems
  • Fire water and pumping systems and their controls.

13. OBJECTIVES OF ELECTRICAL SAFETY AUDIT: To assess the safety of equipments: From damage during normal operation. Capability of the protective system to protect the equipments in the event of electrical faults. 14. To assess the safety of the personnel :

  • Are the operating and maintenance personnel aware of electrical hazards?
  • Is statutory regulation fulfilled?
  • During emergencies also?
  • (Power failures, Electrical fault)

15. To assess the Systems capability:

  • Is the system adopted safe for maintenance personnel for carrying out electrical job Safely?
  • Does the system adopted satisfies statutory regulations (Maintenance practices)
  • Does the system provide Review mechanism for checking adequacy of electrical safety?
  • Does the system provide amendment of Safety practices & Communication with relevant personnel?

16. Other aspects:

  • Assessment of the existing systems adequacy, strength and weakness,
  • Is the Electrical System adequately protected against external causes?
  • Is there a relevant safety manual available on operation and maintenance and emergency procedures?

17. Emergency Preparedness:

  • Adequacy, suggestion for improvements.
  • Call for site employees suggestion
  • Involve them in the task
  • Educate them
  • Create awareness and constant consciousness

18. ELECTRICAL SAFETY MOST IMPORTANT ESPECIALLY FORPETROCHEMICAL INDUSTRIES 19. ELECTRICITY IS

  • A good servant, but
  • a bad master
  • You control it, it will serve you nicely
  • Do not allow it to control you
  • Electricity excuses nobody
  • Accidents do not happen; they are caused

20. ELECTRICAL SAFETY

  • ELECTRICITY
  • Convenient, clean, useful source of energy
  • Easily transformed into other energies
  • Mechanical, chemical and heat
  • Easily produced
  • Conveniently transmitted to long distances without much loss

21.

  • BUT POTENTIALLY A SOURCE OF GREAT DANGER AND HAZARD !
  • Shocks, some times fatal
  • Injuries and burns
  • Permanent deformation of the victim and
  • When used in a hazardous atmosphere, electricity may be a potential source of ignition.

22.

  • Much development taken place in equipment usage, designed to be safe.
  • But not proof against misuse and neglect
  • Understand hazardous
  • Do not take risk, in doubt ask
  • Electricity does not excuse any one
  • A good servant but a bad master.

23.

  • Electricity is:
  • A Good ServantBut a bad master
  • Six Golden rules:
  • Follow all safety rules
  • Adhere To established procedures
  • Use proper control gears
  • Never take anything for granted
  • Always bealert
  • Keep your mind on the job.
  • You control electricity
  • It will serve you nicely!
  • Do not allow it to control you!

24.

  • Accidents do not happen
  • They are caused
  • Due to
  • Ignorance
  • Negligence
  • Inadvertence
  • Third persons ignorance
  • Not using safety gears
  • Not having enough knowledge or experience
  • Over confidence due to long experience

25. Accidents do not happen They are caused

  • Not checking the system for
  • *Alternate power source
  • *Residual charges
  • *Low voltage reverse feeding
  • *Ring main system
  • *Multiple sources

26. Accidents do not happen They are caused

  • Inefficient or no supervision
  • Non co-operation from co-workers
  • Consuming intoxicating drinks, substances
  • Family problems
  • Natural calamities
  • Fatigue due to lack of rest

27. Accidents do not happen They are caused

  • Lack of proper display of caution boards
  • Not checking the conditions of safety gears
  • Improper fire extinguishing equipments
  • Improper protective equipments
  • Lack of maintenance of safety gears

28.

  • WHAT IS ELECTRICITY?
  • AMPERES?
  • VOLTS?
  • WATTS?
  • FLOW OF CURRENT AMPERES
  • WITH POTENTIAL DIFFERENCE VOLTS
  • ACROSS A RESISTANCE OHMS
  • FLOW OF CURRENT GIVES POWER WATTS