Case Study 3 : Chapter 7 - Electrical Safety

Introduction 

Assalamualaikum & have a nice day everyone. Today we are given the new task for Chapter 7. This group discussion consist of 3 members, I, Nur Hidayah Binti Zarapi, Puteri Shazmira Sofea & Nur Syafiqa Binti Ibrahim. 

 

WHAT IS ELECTRICITY?
Electricity is electrical energy or electrical power when its generated , supplied , or utilized .

 

DEFECTIVE INSULATION HAZARD :

⇨IMPROPER GROUNDING HAZARD

 

 

• Grounding is the process used to eliminate unwanted voltage. 
•  A ground is a physical electrical connection to the earth
• Electrical equipment must be properly grounded. 
• Grounding reduces the risk of being shocked or electrocuted.
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• The ground pin safely returns leakage current to ground. 
•  Never remove the ground pin.
• Removing the ground pin removes an important safety feature. 
•  You can get shocked! 

⇨ OVERLOAD HAZARD

• Overloaded circuits can cause fires.
• Use proper circuit breakers
• Never overload an outlet.

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• Do not use power strips or surge protectors on construction sites. 
• Use a 3-way extension with a GFCI instead.

WET CONDITION HAZARD

• Wet conditions are hazardous. 
•  Damaged insulation increases the hazard.
• Always avoid using tools in wet locations.
•  Water increases the risk of electric shock.
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• PREVENTING MEASURES IN ELECTRICAL SAFETY
  • PROTECTION FROM DIRECT CONTACT

  which is electrical shock on touching directly a live conductor or cable
   
   
  • PROTECTION FROM INDIRECT CONTACT

  which is occurs due to contact with a part which is connected to the electrical instalation , possibly due to damages in the appliance or insulation  , resulting in leakages of current .

   

   

   

  SAVE WORKING ENVIRONMENT

  LOCK OUT AND TAG OUT 

  • All electrical source
  • Place on each disconnecting means used to de-energize circuits
  • Attach lock to prevent operating 
  • Place tag with each lock
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  • OVERLOAD WIRING BY USING THE RIGHT SIZE AND TYPE OF WIRE

   

   

   

  • Max.Ampere rating vs size for copper conductor
  • value are not more than 3 conductor in raceway or cable 

  
  
  

  WHAT WILL HAPPEN IF ALL ABOVE IS NOT CONTROL? 

  
  
  

  •  The number of injuries among electrical workers will be increase

   There will be no more electrical workers because they to afraid that they will die.

  
  

  • It will been traumatized for the victims
  • Half of their body will been burn and died.
  • They also will lose some of their sensation.

  
  

  
  

  
  

  
  

  
  

  
  

  Conclusion

  •Adequate electrical safety in health-care facilities and systems can be achieved at moderate costs by combining:

  1.Good power-distribution system

  2.Well designed equipment

  3.Periodic maintenance and testing of power systems and equipment

  4.Modest training program for medical personnel

  
  

   
  

  
  

  
  

    REFERENCE

  •  https://www.lanl.gov/safety/electrical/docs/elec_hazard_awareness_study_guide.pdf
  •  http://ecmweb.com/content/safety-patrol
  •  http://www.atlantictraining.com/blog/electrical-safety-training-powerpoints/
  •  http://www.hobbyprojects.com/electrical-hazards/conclusion-preventing-electrical-hazards.html
  •  http://www.ece.ucy.ac.cy/courses/ece473x665/slides/8.pdf