August 21, 2008

SAFETY PRECAUTIONS

Safety is everyone’s responsibility. It is the job of everybody in and out of the laboratory to exercise proper precautions and to ensure that no one will be injured and no equipment will be damaged.
GENERAL SAFETY PRECAUTIONS


Because of possibility of personal injury, danger of fire, and possible damaged to equipment and materials, all work on electrical and electronic circuits should be done following these basic safety procedures.
1. Remove power from the circuit or equipment prior to working on it. Never assume the circuit is off; check it with multimeter.
2. Remove and replace fuses only after the power to the circuit has been turned-off.
3. Make sure all equipment is properly grounded.
4. Use extreme caution when installing or removing batteries containing acid.
5. Use cleaning fluids and other chemicals only in well-ventilated places.
6. Dispose of cleaning rags and other flammable materials in tightly closed metal containers.
7. In case of electrical fire, switch off the circuit and report it immediately to appropriate authority.

HIGH VOLTAGE SAFETY PRECAUTIONS


As people become familiar on working on circuits, it is human nature to become careless with usual procedures. Many pieces of electrical equipment use voltages that are precarious and can be deadly if contacted. The following safety measures must be followed at all times when working on or near high voltage circuits:
1. think over the result of each act. There are completely no reasons for individuals to take chances that will imperil their life or the lives of others.
2. Stay away from live circuits. Do not work on or make adjustment with power switch on.
3. Do not work by yourself. At all times, work in the presence of another person capable of providing assistance and first aid in case of an emergency.
4. Do not ground yourself. Make certain you are not grounded when making adjustment or using measuring instruments. Use only one hand when connecting equipment to a circuit. Make it a practice to place one hand in your rear pocket.
5. Never switch on equipment in the presence of water leakage.

PERSONAL SAFETY PRECAUTIONS


Take time to be safe when working on electrical and electronic circuits. Do not work on any circuits or equipments but for the power is secured.
1. Work no more than in clean dry areas. Keep away from working in damp or wet locations because the resistance of the skin will be lesser this increases the chance of electrical shock.
2. Do not be dressed in baggy or flapping clothing. Not just may it get caught, nevertheless it might also serve as a path for the transmission of electricity.
3. Wear only nonconductive shoes. This will lessen the possibility of electrical shock.
4. Take away all rings, wristwatches, bracelets, ID chains, tags, and similar metal items. Avoid clothing that contains exposed metal zippers, buttons or other types of metal fasteners. The metal can act as a conductor, heat up and cause a bad burn.
5. Do not use bare hands to remove hot parts.
6. Make certain that the equipment being used is properly grounded. Ground all test equipment to the circuit under test.
7. Remove power to a circuit prior to connecting alligator clips. Handling an un-insulated alligator clip could cause probable shock hazard.


SELF-CHECKING EXERCISES
Direction: Write T if the statement is correct and F if false on the space provided for.
_____1. Use extreme caution when removing or installing batteries containing acids.
_____2. Avoid working in damp or wet locations because the resistance of the skin will be higher; this increases the chance of electrical shocks.
_____3. Use both hands when connecting equipment to a circuit.
_____4. Switch on equipment in the presence of water leakage.
_____5. Remove and replace fuses only after the power to the circuit has been switch off.
_____6. Do not wear baggy or flopping clothing.
_____7. Use cleaning fluids only in a well-ventilated space.
_____8. At all times work in the company of another person capable of providing support in case of an emergency.
_____9. When working with electricity, remove all rings, wristwatches bracelets and similar metal items.
_____10. Handling an un-insulated alligator clips could cause probable shock hazards.

2 comments:

Perionet said...

Nice start
Im new on this so I will read it again
Thanks

mahesh said...

I have enjoyed reading your articles. It is well written. It looks like you spend a large amount of time and effort in writing the post. I am appreciating your effort. .
Electrical Testing and Tagging