The document discusses electrical hazards and safety procedures for computer system servicing and maintenance. Some key points: 1. Electrical hazards can cause shock, arc flash burns, or other injuries if workers make contact with energized equipment. Common electrical hazards include poorly installed wiring and equipment, overloaded outlets, and damaged cords. 2. Both static and dynamic electricity present risks. Static builds up from contact and friction, while dynamic electricity is the flow of electrons through a circuit. 3. Workers should be trained to install equipment safely, check for faults, isolate live parts, and use proper protective equipment like gloves and glasses. Unplugging equipment, avoiding water sources, and keeping work areas clear can reduce hazards.

1. PRACTICE OCCUPATIONAL
HEALTH AND SAFETY
PROCEDURES
COMPUTER SYSTEM
SERVICING AND
MAINTENANCE

2. ELECTRICAL HAZARD
An electrical hazard is a dangerous condition
where a worker can or does make electrical
contact with energized equipment or a conductor.
From that contact, the person may sustain an
injury from shock, and there is a potential for the
worker to receive an arc flash (electrical explosion)
burn, thermal burn or blast injury.

3. Electricity can either be
"static" or "dynamic"
Static electricity is the accumulation of
charge on surfaces as a result of contact
and friction with another surface. Dynamic
electricity is the uniform motion of
electrons through condition (electric
current).

4. What Are the Most Common
Electrical Hazards?
Most office environments are
considered low-risk in terms of
electrical hazards, particularly when
compared to other industries. While
this may be true, it does not make the
hazards any less significant.

5. Poorly installed and/or maintained electrical
equipment.
Faulty wiring.
Overloaded, overheated, or shorted outlets.
The use of flexible leads and extension cables
that are prone to damage.
Using equipment that is believed to be dead but
is live. Incorrect use of replacement fuses.
Using electrical equipment near a source of
water or with wet hands.

6. Installing and Maintaining Safe Equipment
❑ Ensuring that all electrical equipment selected for workers is safe for
work activities and for their intended purpose.
❑ Ensuring that all electrical equipment has gone through the necessary
checks before being brought onto the premises.
❑ Ensuring that all electrical equipment is properly installed and
maintained by a qualified person.
❑ Arranging for equipment to be regularly inspected for faults, to be
isolated immediately if faults are discovered, and to be repaired by a
suitably trained person.
❑ Preventing all live parts of electrical equipment from being accessed
during normal operation.
❑ Providing all employees with information and training on electrical
safety and the correct use of electrical equipment.

7. Awareness of Electrical
Hazards
Hazards that may lead to electricity related
accidents:
• Electrical cables that are frayed, loose, or
have exposed wires.
• Rattling plugs.
• Electrical equipment that gives off a strange
odour.
• Overheating equipment (those that are not
heated by normal operation).
• Overloaded outlets or extension cords.
• Equipment that is not working properly.

8. Tips for Minimizing
Electrical Hazards
• Switch off and unplug computers when they
are not in use and before cleaning.
• Turn off all computers at the end of the day.
• Do not force a plug into an outlet if it does
not fit.
• Do not run electrical cords through high-
traffic areas, under carpets, or across
doorways – this will prevent cords from
being worn down and minimizes accidents.
Maintain at least 3 feet of clearance
in front of all electrical panels.

9. MAINTAIN OCCUPATIONAL HEALTH
AND SAFETY AWARENESS
Common hazards encountered by computer technicians and
users
A hazard is a situation in the workplace that has the potential
to harm the health and safety of people or to damage plant and
equipment. The situation could involve a task, chemical or
equipment used. Hazard management is a continuous process
that can be used to improve the health and safety of all
workplaces.

10. 1. Physical hazards
One of the most common physical hazards involving
computer technicians

11. 2. Mechanical hazards
When working on electronic equipment always be
alert to any possibility of being hurt by moving parts,
hot components, or sharp edges.

12. 3. Chemical
hazards
➢ There is a wide array of
chemicals used with
electronic equipment.
➢ Before using any chemicals
for electronic equipment
always read the warnings
and instructions on the label.

13. 4. Electric
Shock Hazards
➢ Inside computers and
electronic equipment

14. The workplace should have
safety guidelines to follow to:
• Protect people from injury
• Protect equipment from
damage
• Protect the environment from
contamination

15. Fire Safety Guidelines
➢ Know the location of fire extinguishers,
how to use them and which to use for
electrical fires and for combustible fires.
➢ Find an escape route in case a fire gets
out of control.
➢ Know how to contact emergency services
quickly
➢ Keep the workspace clean.
➢ Keep most solvents in a separate area.

16. Safety Precautions when working:
1. Do not work alone so that there is
someone who can take care of you in case of
accident or emergency.
2. Always power off and unplug the computer
before working on it.
3. Take away any liquid such as mineral
water or soft drinks near your working area or
near computers.
4. Be careful with the tools that may cause
short circuit.
5. Always ground or discharge yourself
before touching any part of the computer.

17. 6. Do not use excessive force if things do not quite slip
into place.
7. Clean the area before and after using it to maintain
sanitation and prevent accidents.
8. Hold the components by edges and do not touch
the IC’s.
9. Always wear Personal Protective Equipment (PPE)
in accordance with the organization’s OHS procedures
and practices.
10. Make sure that the pins are properly aligned when
connecting a cable connector.
11. Contingency measures during workplace
accidents, fire, and other emergencies are recognized.
12. Use brush, compressed air or blower in cleaning
the computer system.

18. Personal Protective Equipment (PPE)
Refers to protective clothing,
helmets, goggles, or other
garment or equipment designed
to protect the wearer’s body from
injury by blunt impacts, electrical
hazards, heat, chemicals, and
infection, for job-related
occupational safety and health
purposes, and in sports, martial
arts, combat, etc.

19. Cover-all/ Lab Gown
• Used to avoid injuries
caused by sharp
objects and extreme
sunlight.

20. Safety Boots
• Protects foot from
injuries and
prevent building up
static electricity.

21. Safety Gloves
• Used to protect
hands from electric
surge and
potential chemical
hazards.

22. Safety Eye Glasses
• Used to protect
eyes against
foreign objects and
extreme lights.

23. Face Shield
• Protection against
chemical hazards.

24. Helmet
• Protects head from
falling debris and
other physical
hazards.

25. Hearing Protector
• Protection for
high noise
areas.

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