Safety Precautions in Workshop
TITLE:
Safety Precautions in Workshop
PREVIOUS KNOWLEDGE:
You have seen how a computer or a mobile phone is made up of many small parts. You know that tools like screwdrivers and pliers help us open and fix them. You also know that electricity powers the machines and that we must be careful around it.
OBJECTIVES
By the end of this lesson, students should be able to:
1. Handle tools safely and responsibly.
2. Understand basic rules for working with electricity.
3. Learn how to protect electronic parts from static electricity.
INSTRUCTIONAL MATERIALS:
- A set of screwdrivers of different sizes
- Pliers, wire cutters, and a multimeter
- Rubber gloves and safety goggles
- A small battery and a simple circuit kit
- A small anti‑static wrist strap
CONTENT
Handling Tools
When you pick up a tool, you are using a piece of equipment that can help you fix a device. In Lagos, a mechanic may use a wrench to tighten a bolt on a motor. A tool is any item that makes work easier. It can be a hand tool like a screwdriver or a power tool like a drill.
Tools can be sharp or heavy. If you hold a screwdriver wrong, you could cut your fingers or damage the part you are working on. Always look at the tool before using it. Check for cracks or broken parts. If you see any, do not use the tool.
When you finish using a tool, put it back in its place. Keep tools away from children and pets. Store them in a dry, safe place. This keeps the workshop tidy and prevents accidents.
Electricity
Electricity is a kind of energy that flows through wires and powers devices. In a market in Kano, a street vendor might use a small generator to run a fridge. Electricity can be dangerous if you do not follow safety rules.
When you work with a power supply, always turn it off before you open the device. If you touch a live wire, you could get shocked. A shock can hurt you and damage the device. Use a voltage tester to check if a wire is live before touching it.
Never leave a device plugged in when you are not using it. Unplug it when you finish work. This reduces the risk of fire or electric shock. Keep your hands dry and wear rubber gloves if you are working on a high‑voltage circuit.
ESD Safety
ESD stands for electrostatic discharge. It is a sudden burst of static electricity that can damage electronic parts. In a small shop in Ibadan, a technician might accidentally touch a mobile phone and cause it to fail because of static.
To protect parts, use an anti‑static wrist strap. This strap is worn on your wrist and is connected to a grounded metal object. It keeps the static charge from building up on your body. When you touch a component, the charge is safely discharged.
Do not work on a carpeted floor or in a dry room. Static builds up more easily in these conditions. If you must work there, wear rubber‑bottom shoes and use an anti‑static mat. Keep your hands clean and dry, and avoid wearing synthetic clothing.
Common Mistakes:
- Using a damaged or broken tool instead of checking it first.
- Forgetting to turn off the power before opening a device.
- Touching electronic parts without grounding yourself.
EVALUATION
1. What should you do before using a screwdriver in a workshop?
2. Why must you turn off the power before opening a device?
3. How does an anti‑static wrist strap protect electronic parts?
SUMMARY
In this lesson we learned how to handle tools safely, follow basic rules for working with electricity, and protect electronic parts from static electricity. You now know that checking tools, turning off power, and using grounding methods are essential for a safe workshop. Remember to keep tools in good condition, always switch off power before working, and use anti‑static measures to keep your repairs safe and effective.