Workshop Accidents, Causes and Fire Management for SS 3

Class: SS 3
Term: First Term
Week: 2
Age: 17 years
Duration: 60 minutes
Subject: Upholstery
Curriculum Theme: Workshop Accidents, Causes and Fire Management
Previous Lesson: General Workshop Safety, Safety Rules, Signs and First Aid
Topic: ACCIDENT AND FIRE MANAGEMENT
Subject Matter: Definition of accidents; Causes of accident; Method of handling accident; Accident reduction; Definition and types of fire; e.g electrical fault, inflammable materials, unsafe work habits; Fire equipments e.g. sand buckets, water hose, fire extinguishers, etc; Methods of handling fire occurrences

Specific Objectives

By the end of the lesson, pupils/students should be able to:

Cognitive Domain

• Define an accident.
• State at least three causes of accidents in an upholstery workshop.
• Outline methods for handling accidents.
• Explain steps for accident reduction.
• Define fire.
• Identify different types and sources of fire.
• Enumerate various fire fighting equipment.
• Describe methods of handling fire occurrences.

Affective Domain

• Appreciate the importance of safety precautions in the workshop.
• Demonstrate a cautious attitude towards potential hazards.
• Value the use of appropriate fire fighting equipment.

Psychomotor Domain

• Demonstrate (simulated) the correct use of fire fighting equipment.
• Apply basic first aid principles in case of minor accidents.

Reference Materials

The following resources were used in planning this lesson:

• 2014 Senior Secondary Education Curriculum (SSEC)
• Relevant State Unified Scheme of Work
• Upholstery and Furniture Craft textbooks for Senior Secondary Schools
• FCT ERC/NAPPS Scheme of work

Instructional Materials

The teacher will teach this lesson with the aid of:

• Charts showing common workshop accidents and their causes.
• Pictures of various fire fighting equipment (e.g., sand buckets, water hose, different types of fire extinguishers).
• First aid box.
• A small, empty fire extinguisher for demonstration.
• Sand bucket and shovel (for demonstration).

Rationale for the Lesson

This lesson is essential for upholstery students to understand the critical importance of safety in the workshop environment. It equips them with the knowledge to prevent accidents, respond effectively when they occur, and manage fire hazards, thereby protecting themselves, their colleagues, and workshop property. Mastering these safety practices ensures a secure working environment and contributes to efficient production.

Prerequisite/Previous Knowledge

Pupils/students should have basic knowledge of workshop tools and general safety rules from previous classes.

Lesson Content/Board Summary

ACCIDENT AND FIRE MANAGEMENT

Definition of Accident

An accident is an unplanned, unforeseen, and undesirable event that results in injury, damage to property, or loss of life. In a workshop, it often disrupts normal work processes and can lead to serious consequences.

Causes of Accidents in the Workshop

Accidents in an upholstery workshop can be caused by various factors, including:

1. Unsafe Acts: These are human errors such as working without proper training, operating machinery carelessly, not using personal protective equipment (PPE), horseplay, or ignoring safety rules.
2. Unsafe Conditions: These are hazardous situations in the workshop environment like faulty machinery, poor lighting, cluttered workspaces, slippery floors, inadequate ventilation, or improperly stored materials.
3. Lack of Training: Workers who are not properly trained on how to use tools and machinery safely are prone to accidents.
4. Fatigue and Stress: Tired or stressed workers are more likely to make mistakes that lead to accidents.
5. Improper Use of Tools and Equipment: Using the wrong tool for a job or using a tool incorrectly can cause accidents.
6. Poor Housekeeping: A messy workshop with tools and materials scattered around increases the risk of tripping, falling, or striking hazards.

Methods of Handling Accidents

When an accident occurs, prompt and appropriate action is crucial. Methods include:

1. Stay Calm: Assess the situation without panicking.
2. Ensure Safety: Move the injured person to a safe area if possible, or secure the accident site to prevent further injury.
3. Administer First Aid: Provide immediate first aid for minor injuries.
4. Call for Help: For serious injuries, immediately call for medical assistance or emergency services.
5. Report the Accident: Inform the supervisor or relevant authority about the accident, providing details of what happened.
6. Investigate: After ensuring safety and care for the injured, investigate the cause of the accident to prevent recurrence.

Accident Reduction Strategies

To reduce accidents in the workshop, the following strategies should be implemented:

1. Regular Training: Provide continuous training on safe work procedures, tool usage, and emergency responses.
2. Enforce Safety Rules: Strictly enforce all safety rules and regulations, including the mandatory use of PPE.
3. Maintain Equipment: Regularly inspect and maintain all tools and machinery to ensure they are in good working condition.
4. Good Housekeeping: Keep the workshop clean, tidy, and free of clutter. Ensure proper storage of materials and tools.
5. Hazard Identification and Risk Assessment: Regularly identify potential hazards and assess risks, then implement measures to eliminate or control them.
6. Proper Lighting and Ventilation: Ensure adequate lighting and ventilation to prevent strain and exposure to harmful fumes.
7. Ergonomic Design: Design workstations and tasks to reduce physical strain and fatigue.
8. Safety Signage: Display clear safety signs and warnings throughout the workshop.

Definition and Types of Fire

Definition of Fire

Fire is a rapid oxidation process, a chemical reaction that releases heat, light, and various reaction products. It requires three elements to start and sustain: fuel (combustible material), oxygen (from the air), and heat (ignition source). This is known as the “fire triangle.”

Types/Sources of Fire

Fires are classified based on the type of fuel involved. Common sources and types in an upholstery workshop include:

1. Class A Fires (Ordinary Combustibles): Involve common flammable materials such as wood, paper, fabric (upholstery materials), plastics, and rubber.
2. Class B Fires (Flammable Liquids): Involve flammable liquids like petrol, oil, grease, paints, solvents, and varnishes often used in upholstery.
3. Class C Fires (Flammable Gases): Involve flammable gases such as propane, butane, or natural gas.
4. Class D Fires (Combustible Metals): Involve combustible metals like magnesium, titanium, or potassium (less common in upholstery but possible with specialized tools).
5. Class E Fires (Electrical Fires): Involve live electrical equipment. This is a common hazard due to electrical faults, overloaded circuits, faulty wiring, or improper use of electrical tools (e.g., sewing machines, power cutters).
6. Class F Fires (Cooking Oils/Fats): Involve cooking oils and fats (less common in a workshop but relevant if there’s a canteen).

Specific sources in an upholstery workshop include:

1. Electrical Faults: Overloaded sockets, damaged wiring, faulty machinery.
2. Inflammable Materials: Fabrics, foam, glues, solvents, paints, wood dust, and other upholstery materials.
3. Unsafe Work Habits: Smoking in prohibited areas, leaving heat sources unattended, improper storage of flammable liquids, welding/grinding near combustibles without precautions.
4. Heat Sources: Overheated motors, welding equipment, open flames, sparks from grinding.

Fire Fighting Equipment

Various equipment are used to extinguish fires, each suited for different fire types:

1. Sand Buckets: Effective for smothering small Class A and B fires by cutting off oxygen.
2. Water Hose/Water Extinguishers: Primarily used for Class A fires (wood, paper, fabric). Water cools the fuel below its ignition temperature.
3. Fire Extinguishers: Portable devices containing agents to extinguish fires. Types include:
   1. Water Extinguishers: For Class A fires.
   2. Foam Extinguishers: For Class A and B fires. They cool and smother the fire.
   3. Dry Powder Extinguishers (ABC Powder): Versatile, for Class A, B, and C fires. They interrupt the chemical reaction of the fire.
   4. Carbon Dioxide (CO2) Extinguishers: For Class B and E (electrical) fires. They displace oxygen and cool the fire.
   5. Wet Chemical Extinguishers: Specifically for Class F fires (cooking oils/fats).
4. Fire Blankets: Used to smother small fires or wrap around a person whose clothing is on fire.
5. Fire Alarms: Devices that detect smoke or heat and alert occupants.

Methods of Handling Fire Occurrences

In case of a fire, follow these steps:

1. Raise the Alarm: Immediately alert others by shouting “Fire!” and activating the fire alarm.
2. Evacuate: Follow the established evacuation plan, moving quickly and calmly to the designated assembly point. Do not use elevators.
3. Attempt to Extinguish (if safe): Only attempt to extinguish a small fire if it is safe to do so, you are trained, and you have the correct extinguisher. Remember the PASS method for extinguishers:
   1. Pull the pin.
   2. Aim the nozzle at the base of the fire.
   3. Squeeze the handle.
   4. Sweep from side to side.
4. Do Not Re-enter: Once evacuated, do not re-enter the building for any reason until emergency services declare it safe.
5. Call Emergency Services: Ensure the fire service is called immediately, providing clear details of the location and nature of the fire.

Teaching Methods/Instructional Techniques

Discussion, Demonstration, Guided Practice, Question and Answer, Explanation, Observation, Practical Activity

Instructional Procedures

Step 1: Introduction

Time: 5 minutes

Teaching Skill: Engagement/Recall

Teacher’s Activity: The teacher greets the students and asks them to recall any safety rules they know for working in a workshop. The teacher then introduces the topic of accident and fire management, highlighting its importance in upholstery work.

Pupils’ Activity: Pupils respond by mentioning various safety rules and listen attentively to the introduction.

Learning Point: Workshop safety importance

Step 2: Definition of Accident

Time: 10 minutes

Teaching Skill: Explanation/Definition

Teacher’s Activity: The teacher explains the meaning of an accident, providing examples relevant to an upholstery workshop. The teacher also discusses the immediate and long-term consequences of accidents.

Pupils’ Activity: Pupils listen, ask questions for clarification, and contribute their own examples of accidents.

Learning Point: Accident definition and consequences

Step 3: Causes of Accidents

Time: 10 minutes

Teaching Skill: Explanation/Categorisation

Teacher’s Activity: The teacher explains the various causes of accidents in a workshop, categorising them into unsafe acts and unsafe conditions, and provides specific examples for each. The teacher uses charts to illustrate.

Pupils’ Activity: Pupils observe the charts, identify causes, and discuss how these causes might lead to accidents in their own workshop.

Learning Point: Causes of workshop accidents

Step 4: Handling Accidents and Accident Reduction

Time: 10 minutes

Teaching Skill: Instruction/Problem-solving

Teacher’s Activity: The teacher outlines the steps for handling accidents effectively, including first aid and reporting. The teacher then explains various strategies for accident reduction, emphasising prevention over cure.

Pupils’ Activity: Pupils take notes, discuss the importance of each step, and suggest additional prevention methods.

Learning Point: Accident handling and prevention

Step 5: Definition and Types of Fire

Time: 5 minutes

Teaching Skill: Explanation/Classification

Teacher’s Activity: The teacher defines fire and explains the fire triangle. The teacher then discusses different types of fire (Class A, B, C, E) and their common sources in an upholstery workshop, such as electrical faults and inflammable materials.

Pupils’ Activity: Pupils listen, identify different fire types, and relate them to workshop materials.

Learning Point: Fire definition and types

Step 6: Fire Fighting Equipment and Handling Methods

Time: 10 minutes

Teaching Skill: Demonstration/Practical Application

Teacher’s Activity: The teacher enumerates and shows pictures/actual examples of various fire fighting equipment (sand buckets, water hose, different fire extinguishers). The teacher demonstrates the correct method of using a fire extinguisher (PASS method) and explains general fire handling procedures.

Pupils’ Activity: Pupils observe the demonstration, identify the equipment, and practice the PASS method with an empty extinguisher (if available) or simulate the actions.

Learning Point: Fire equipment and handling

Step 7: Evaluation/Review

Time: 5 minutes

Teaching Skill: Questioning/Assessment

Teacher’s Activity: The teacher evaluates the learning by asking the following questions:

1. What is an accident?
2. Mention three causes of accidents in an upholstery workshop.
3. List two methods of reducing accidents.
4. Define fire and name two types of fire.
5. Enumerate three fire fighting equipment.

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Accident and fire knowledge

Step 8: Note-Taking

Time: 10 minutes

Teaching Skill: Guided Writing

Teacher’s Activity: The teacher guides pupils/students to copy the essential Board Summary notes on accident and fire management into their notebooks.

Pupils’ Activity: Pupils/students copy the notes carefully into their notebooks.

Learning Point: Recording lesson notes

Step 9: Conclusion

Time: 5 minutes

Teaching Skill: Consolidation

Teacher’s Activity: The teacher summarises the key points of the lesson, reiterating the importance of safety and preparedness in the workshop. The teacher encourages students to always prioritise safety in their work.

Pupils’ Activity: Pupils listen and ask any final questions.

Learning Point: Safety importance reinforced

Continuous Assessment/Further Study

Type: Homework

Instruction: Answer the following questions in your notebook:

1. Describe a hypothetical accident that could occur in an upholstery workshop and explain how it could have been prevented.
2. Research and list the different classes of fire and the appropriate fire extinguisher for each class.
3. Draw and label a simple diagram of a fire extinguisher, indicating its main parts.

Lesson Keywords

• Accident – An unplanned, unforeseen, and undesirable event resulting in injury or damage.
• Unsafe Acts – Human errors or behaviours that cause accidents.
• Unsafe Conditions – Hazardous situations in the environment that cause accidents.
• Fire – A rapid oxidation process involving fuel, oxygen, and heat.
• Fire Triangle – The three elements (fuel, oxygen, heat) needed for fire.
• Fire Extinguisher – A portable device used to put out small fires.
• PASS Method – An acronym for Pull, Aim, Squeeze, Sweep, used for operating a fire extinguisher.
• First Aid – Immediate care given to an injured person before medical help arrives.

Differentiation

For students who grasp concepts quickly, encourage them to research local fire safety regulations for workshops or design a simple fire escape plan for their school workshop. For students needing more support, provide simplified diagrams of fire fighting equipment and guide them through step-by-step accident handling procedures with visual aids.

Suggested Lesson Videos

For visual demonstrations and further understanding, search on YouTube for:

• workshop safety accident prevention SS3
• types of fire and extinguishers demonstration