Monday, 20 March 2017

CASE STUDY 3

ELECTRICAL SAFETY

 Assalamualaikum and have a nice day everyone, today we are given the new task for chapter 7. This group discussion consist of 3 members, Siti Asmadiana binti Saiful Amran , Solehah binti Johari and Nurul Najihah binti Rosli and we are from the Solenoid's group.😁

                         

 WHAT IS ELECTRICITY
 A form of energy resulting from the existence of charged particles (such as electrons or protons), either statically as an accumulation of charge or dynamically as a current.


 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.
  • 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.
  • 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.

     
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

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