FIRST TERM
SUBJECT:� BASIC TECHNOLOGY
CLASS:� JSS1
REFERENCE MATERIALS
- NERDC, Basic Technology for JSS, Book 1
- EVANS, Basic Technology for JSS, Book 1
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WEEK THREE
TOPIC: WORKSHOP SAFETY (II)- DEFINITION OF ACCIDENTS
CONTENT�
- Definition of accident
- Causes of accidents
- Accident prevention
- Fire
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DEFINITION OF ACCIDENT
An accident is an unforeseen turn of events without an apparent cause i.e. a negative experience that happens to somebody when he does not expect it. Accidents can be caused by people and equipment.
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CAUSES OF ACCIDENTS
Causes of accidents in the workshop can be grouped under two major headings:
- Unsafe actions � (ii) unsafe conditions
Unsafe Actions
- Lack of concentration
- horseplay
- Lack of carefulness in handling the machines
- Fatigue� / tiredness
- Failure to use� safety devices
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Unsafe Conditions
- Bad/faulty machine
- Slippery or wet floors
- Absence of safety devices
- Non-maintenance of tools
- Working in the workshop when one is tired or sick.�
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EVALUATION
- �What is an accident?
- �State five (5) causes of accidents.
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ACCIDENT PREVENTION
Accidents in the workshop can be prevented by observing the following rules:
- Keep workshop clean and tidy
- No horse play
- Dress safely for work
- Work safely with hand tools
- Work safely with machines
- Work safely electrical tools, machines and appliances
- Work safely with hot materials�
- Always be very careful.
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TYPES OF FIRE
There are two types of fire which can occur in a workshop. These are
- Electrical fire
- Chemical fire
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ELECTRICAL FIRE
An electrical fire may result due to the following:
- Sparks due to short circuit or partial contact
- Poor wiring
- Wrong electrical connections
- Overloading
- Not switching off electrical appliance after use.
Electrical fire is fought with fire extinguisher, water and dry sand.
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CHEMICAL FIRE
A chemical fire is caused by chemical substances used or stored in the workshop. Examples of chemical substances are gas, oil and grease.
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Chemical fire is fought with foam, dry sand or gas from a fire extinguisher. Never use water to put out fire caused by chemicals.
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EVALUATION
- How can we prevent accidents in a workshop?
- List two types of fire that can occur in the workshop.
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READING ASSIGNMENT
Read on Drawing instruments and materials from Introductory Technology (JSS1) by Evans.� Pages 8-12
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WEEKEND ASSIGNMENT
- _______ is a place where activities such as fabrication, designing, construction and drawing take place. (a) Factory (b) Hospital (c) Hostel (d) Workshop.
- ______ means protection from, or not being exposed to the risk of harm or injury (a) Methodology (b) Skill (c) Safety (d) Technology
- _______is a negative experience that happens to somebody when he does not expect it (a) An accident (b) Disease (c) Fire outbreak (d) Electrical sparking.
- The following are causes of accidents except� (a) using appropriate safety devices (b) Lack of concentration (c) horseplay (d) Lack of carefulness in handling machines
- _____ are to� be used to stop fire from destroying lives (a) Extinguishers and� bucket of sand (b)� Helmets (c) Boots (d) Goggles�
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THEORY
- Draw a typical basic technology workshop layout.�
- State five (5) workshop safety precautions.
- Mention five (5) workshop safety devices.
