22. CAUSES OF ELECTRICAL
ACCIDENTS
1.Work involving unsafe equipment and
installations;
2.Workplaces made unsafe by the
environment;
3.Unsafe work performance
23. WORK INVOLVING UNSAFE EQUIPMENT AND
INSTALLATIONS;
• Faulty insulation
• Improper grounding
• Loose connections
• Defective parts
• Ground faults
• Unguarded live parts
• Underrated equipment
24. WORKPLACES MADE UNSAFE BY THE
ENVIRONMENT
•Flammable vapors,
liquids or gasses
•Areas having
corrosive
atmospheres
•Wet and damp
locations
25. UNSAFE WORK
PERFORMANCE
• Failure to de- energized
electric equipment when
it is being repaired or
inspected
• Using obviously defective
and unsafe tools; and
• Using tools and
equipment too close to
energized parts.
26. SAFE WORK PRACTICES
THE WRONG WAY
• Repetitious hand work
may cause pain and
result in permanent
injury, limiting your
ability to use your hands
to any kind of work.
THE RIGHT WAY
• Use hand tools or power
tools whenever possible
• Keep tools close to your
body to reduce fatigue
and to increase
productivity.
27. WRONG
• The force and awkward
posture and to pull wire
by hands is hard and
tiring
RIGHT
• Avoid manual wire pulling
and use a tugger or a hand
tool whenever possible
• Communication between the
puller and feeder to
coordinate movements will
make the job easier and
safer.
• Use lighter- weight tools
33. I. METHODS OF IDENTIFYING NON-
FUNCTIONAL TOOLS AND EQUIPMENT
1.Visual inspection
2.Functionality
3.Performance
4.Power supply (electrically operated only)
5.Person’s involve
34. II. CLASSIFICATION OF TOOLS, AND
EQUIPMENT ACCORDING TO THEIR
USES:
1. Measuring tools
2. Holding tools
3. Cutting tools
4. Driving tools
5. Boring tools
6. Electrical equipment
7. Miscellaneous tools/ instrument/ equipment
35. III. PERFORM THE SEGREGATION OF
NON FUNCTIONAL OR DEFECTIVE
HAND TOOLS AND EQUIPMENT
ACCORDINGLY
36. SAFETY PRACTICES
•Always check you’re the tools/ instrument and
equipment before using.
•Use appropriate materials, tools, instrument and
equipment as per job or task requirement.
•Always wear personal protective equipment like
gloves, googles, hard hat etc., at all times
•Wait for the final instruction before doing the job or
task
•Report to the person in authority whenever
38. KIND, USES AND
PROPERTIES OF CLEANING
SOLVENTS
Kinds of cleaning solvents
•Solutions are homogeneous mixture of two or
more components; can be gaseous, liquid or
solid;
•Solvents is a components of a solution that
dissolves solute and usually present in large
proportion or amount.
39. 2 CLASSIFICATION OF
SOLVENT
•Polar solvent- can be dissolve/ are
water soluble
•Nonpolar solvent- cannot be dissolve/
are insoluble in water
40. ASSIGNMENT:
1.Why do we lubricates the electrical
tools and equipment
2.What are the types of lubricants in
electrical tools and tools and
equipment
43. •. It reduces friction between moving metal
surfaces. A lubricant coats surfaces and resists
being displaced by the pressure, keeping the
metal parts separated. Lubricants also prevent
corrosion, block contaminants and can serve
as a coolant
45. OILS
•a broad class of fluid lubricants
which has particular physical
properties and characteristics
•It contains little wax, which
makes them useful for
hydraulic equipment and other
machineries.
•E.g. petroleum oils
46. GREASES
•consist of an oil or synthetic
fluid (80%), a thickening
agents (10%) and additives
(10%). Best used in bearings,
gaskets, seals and other
moving parts.
47. SOLID LUBRICANTS
•Usually fine powders, such
as molybdenum disulfide
(Moly), graphite and Teflon
(PTFE) it can be used
alone, or as additives in
grease or dispersion or as
dry film bonded lubricants.
It can last longer than the
unfortified oils and
48. RUST REMOVER
•used mainly to
dissolve rust. An
excellent cleaner. It
can be prayed on bolt
to remove rust
quickly.
•Example of this is
52. SILICONES
•Very stable and inert
lubricating materials.
Which provide a wider
range of operating
temperatures than
non- silicone synthetic
lubricants
68. ADVANTAGES OF USING
THE PROPER TOOLS
•Efficiency of the work is met
•High quality of work is achieved
•Speed of accomplishment is
faster
•Accuracy is obtained
69. THESE ADVANTAGES DEPEND
UPON THE THREE FACTORS
NAMELY:
•Availability and sufficiency of materials
•Experience and skills of the workers in
their respective fields
•Quality of tools and equipment
70. DIFFERENT KINDS OF
CONSTRUCTION TOOLS
•Carpentry tools
•Masonry tools
•Tinsmith tools
•Painters tools
•Plumbing tools
•Electrical tools
71. GENERAL SAFETY RULES FOR
USING POWER EQUIPMENT
•Always follow manufacturer’s operating
instructions
•Never place hands and a pinch point
•Use eye protection
•Wear gloves when working with hot
72. •Always secure loose clothing such as shirt
sleeves and shirttails
•Tie back long hair and do not wear dangling
jewelry
•Never exceed rated capacity of the
equipment
•Never remove protective guards from the
equipment
