CASE STUDY 3 : CHAPTER 7- ELECTRICAL SAFETY

Introduction 

WELCOME TO SINCERLY . Well me SELVAKUMAR A/L SELVA SEKARAN. Today we are given the new task for Chapter 7 of Electrical Safety . 

WHAT IS ELECTRICITY?

Electricity is a natural phenomenon that occurs throughout nature and takes many different forms. In this tutorial we’ll focus on current electricity: the stuff that powers our electronic gadgets. Our goal is to understand how electricity flows from a power source through wires, lighting up LEDs, spinning motors, and powering our communication devices

DEFECTIVE INSULATION HAZARD :

IMPROPER GROUNDING HAZARD

1. Grounding is the process used to eliminate unwanted voltage. 
2.  A ground is a physical electrical connection to the earth
3. Electrical equipment must be properly grounded. 
4. Grounding reduces the risk of being shocked or electrocuted.
5. The ground pin safely returns leakage current to ground. 
6.  Never remove the ground pin.
7. Removing the ground pin removes an important safety feature. 

OVERLOAD HAZARDS

1. Overloaded circuits can cause fires.
2. Use proper circuit breakers
3. Never overload an outlet.
4. Do not use power strips or surge protectors on construction sites. 
5. Use a 3-way extension with a GFCI instead

WET CONDITION HAZARD

1. Wet conditions are hazardous. 
2.  Damaged insulation increases the hazard.
3. Always avoid using tools in wet locations.
4.  Water increases the risk of electric shock

PREVENTING MEASURES IN ELECTRICAL SAFETY

PROTECTION FROM DIRECT CONTACT

Protection from direct contact is 

which is electrical shock on touching directly a live conductor or cable.

 

PROTECTION FROM INDIRECT CONTACT

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 CIRCUIT AND EQUIPMENT

1. All electrical source
2. Place on each disconnecting means used to de-energize circuits
3. Attach lock to prevent operating 
4. Place tag with each lock

OVERLOAD WIRING BY USING THE RIGHT SIZE AND TYPE OF WIRE

 An electrical hazard exists when the wire is too small a gauge for the current it will carry. When a wire is too small for the current it is supposed to carry, the wire could overheat and cause a fire.The kind of metal used as a conductor can cause an electrical hazard. Special care needs to be taken with aluminum wire. Since it is more brittle than copper, aluminum wire can become loose and oxidize if not made properly, creating heat or arcing.

WHAT WILL HAPPEN IF ALL ABOVE IS NOT CONTROL? 

1. The number of injuries among electrical workers will be increase
2. It will been traumatized for the victims
3. Half of their body will been burn and died.
4. They also will lose some of their sensation.

  

CONCLUSION

Adequate electrical safety in health-care facilities can be achieved at moderate cost by combining a good power-distribution system, careful selection of welldesigned equipment, periodic testing of power systems and equipment, and a modest training program for medical personnel. Fortunately, the electricalsafety scare of the early 1970s has led to increased knowledge and greater safety for both patients and medical personnel.

THANK YOU !!