Interactive Safety Series · LO4

Risks to Health in Construction

Recognise harmful substances and health risks, make safe decisions about storage, hygiene and impairment, understand asbestos danger and choose suitable protection.

LEARNEXPLOREPRACTISECHECKREVIEW

Health damage is not always immediate.Good construction practice means noticing exposure before it becomes illness.

YOUR AIMBuild the judgement to recognise health hazards, understand exposure and choose safer actions.

1RecogniseIdentify hazardous substances and common construction health risks.

2DecideMake safe calls about impairment, storage, hygiene and asbestos.

3ProtectChoose suitable controls and PPE, then prove your learning in the LO4 Challenge.

LO4 · CHAPTER 1

Hidden Hazards

Hazardous substances may be products you bring to the task, or substances created by the work itself. Recognise what is present before exposure happens.

LO4 focus4.1 — List the main groups of substances hazardous to health under current regulations.

Construction site hazardous substances including drums, fuel, brick acid and old building materials

A hazard does not have to look dramatic.Solids, liquids, vapours, gases and micro-organisms can all be part of an ordinary working day.

Solids

Dust, fibres, smoke and fume are solid particles or material that may become airborne.

Liquids

Liquids include fine sprays, mists and aerosols made from small droplets.

Vapours

A vapour is the gaseous form of a liquid or solid, such as solvent vapour.

Gases

Processes and engines can create gases such as carbon monoxide.

Micro-organisms

Bacteria, viruses and fungi can be present in sewage, water, soil and waste.

Five forms to recognise HSE construction guidance describes five useful forms: solids, liquids, vapours, gases and micro-organisms. A single task can create more than one form at the same time, so consider everything present.

ACTIVITY 1 · RAPID RECOGNITION

Recognise the hazardous form

Choose the HSE form that best matches each example.

EXTENDED LEARNING · CITY & GUILDS AC 4.1

Hazardous substances: understand the groups, forms and routes of exposure

COSHH covers much more than liquids carrying an orange warning symbol. A hazardous substance may be bought onto site, already be present, or be created by the work itself. Be ready to name at least five groups/forms and recognise them in construction examples.

Solids and particles

Solid materials can be hazardous themselves or release dust, fibres, smoke or fume. Cutting concrete or mortar can create respirable crystalline silica; sanding timber creates wood dust; welding creates fume.

Liquids and mists

Acids, fuels, cleaning products, wet cement and other liquids can contact skin/eyes or create spray and mist. Fine droplets can also be inhaled.

Vapours and gases

Solvents can evaporate to form vapours. Engines and combustion can produce gases such as carbon monoxide. Some gases can poison; others may displace oxygen.

Biological agents / micro-organisms

Bacteria, viruses and fungi can be present in sewage, stagnant water, contaminated soil and waste. They can cause infection or other ill health.

Five-group recall for this resourceSOLIDSLIQUIDSVAPOURSGASESMICRO-ORGANISMS. Within these, also recognise dusts, fibres, fumes, smoke, mists and aerosols because exam questions may use those words.

Main exposure routes

inhalation into lungs/airways
skin or eye contact and possible absorption
ingestion from contaminated hands, food or cigarettes/vapes
injection/puncture from contaminated sharps

Where information comes from

product label and hazard pictograms
safety data sheet (SDS)
COSHH assessment and site instructions
manufacturer/supplier information
training and competent advice

Exam focusA task can create a hazardous substance even when no chemical container is present. Cutting a concrete block creates dust; welding creates fume; a petrol engine can create carbon monoxide.

CHAPTER 1 - PRACTISE

Map every hazardous form that applies

Each situation shows how many hazardous forms to choose. Select exactly that number, then check the complete mapping.

ACTIVITY 2 · MULTI-FORM MAP

HOW EXPOSURE HAPPENS

How hazardous substances can reach the body

HSE highlights the lungs and airways, skin and mouth as the three main exposure routes. A contaminated sharp can also introduce harmful material through a puncture wound.

🫁

Inhalation

Breathing in dust, fume, mist, gas or vapour.

✋

Skin contact / absorption

Substances touch, irritate or pass through the skin.

👄

Ingestion

Contamination reaches the mouth and is swallowed.

📌

Puncture / injection

A contaminated sharp punctures the skin and introduces harmful material.

ACTIVITY 3 · HOW DID IT GET IN?

Match the exposure route

Choose the most likely route for each construction scenario.

ACTIVITY 4 · SITE INVESTIGATION

Investigate the health hazards

Three markers highlight common health-exposure situations. Select each one and identify the hazard you are looking at.

Construction site with three health exposure situations

Investigation note Select marker 1, 2 or 3.

CHAPTER 2 - COMMON HEALTH RISKS

Health Under Attack

Construction ill health can build slowly. These five risks may not hurt immediately, but the damage can become permanent.

Respiratory diseaseSilicosis, COPD, occupational asthma and other lung disease.

Hearing damageNoise-induced hearing loss and tinnitus.

HAVSDamage to circulation, nerves and muscles in hands and arms.

🖐️

Dermatitis / skin diseaseCement, chemicals and repeated wet work can damage skin.

Musculoskeletal disordersBack, joint and soft-tissue problems from handling, posture and repetition.

ACTIVITY 5 · BODY MAP

Where does the damage show?

Match each risk to the main body area or system affected.

ACTIVITY 6 · MULTI-RISK DETECTIVE

Map every health risk that applies

A construction task can create several long-term health risks at once. Use the significant exposures stated in each scenario. Each one shows how many risks to choose; select exactly that number, then check the mapping.

ACTIVITY 7 · MEMORY MATCH

Match the risk and effect

Turn over two cards at a time. Pair each construction health risk with its likely effect.

Five-risk recallRespiratory disease, hearing damage, HAVS, dermatitis / skin disease and musculoskeletal disorders are the five common construction health risks covered in this chapter.

EXTENDED LEARNING · CITY & GUILDS AC 4.2

Common construction health risks: damage can be slow and permanent

The qualification requires five common health risks. Learn the core five in this chapter, but understand the exposure and symptoms so you can recognise them from unfamiliar scenarios.

Health risk	Typical exposure	Possible effects
Respiratory disease	silica/wood/general dusts, fumes, asbestos fibres and other airborne contaminants	asthma, silicosis, COPD, lung cancer or other serious lung disease depending on exposure
Noise-induced hearing damage	prolonged or repeated high noise from breakers, saws, plant and other equipment	permanent hearing loss and tinnitus
Hand-arm vibration syndrome (HAVS)	regular exposure to vibrating hand-held or hand-guided tools	tingling, numbness, loss of grip/dexterity and circulation problems
Dermatitis / skin disease	wet cement, solvents, resins, oils and repeated wet/dirty work	red, sore, cracked skin; irritant or allergic dermatitis; chemical burns with wet cement
Musculoskeletal disorders	manual handling, repetitive work, force, awkward posture, kneeling and cumulative physical load	pain and injury affecting back, joints, muscles, tendons and upper/lower limbs

Brickwork exampleCutting bricks dry can expose a worker to respirable silica dust; loading and carrying packs creates MSD risk; wet mortar can damage skin; a cut-off saw adds noise and vibration. One task can create several health risks at the same time.

Health is not the same as safety.A fall may injure immediately; silica exposure may not produce obvious symptoms until disease has developed. Both need risk control even though the timescale is different.

Exam focusBe able to link exposure → body system → harm. “Fingers go numb after repeated breaker use” points to vibration; “ringing ears after noisy work” points to hearing damage; “red cracked hands after wet cement” points to skin disease.

LO4 · CHAPTER 3

Fit for Work

Alcohol, illegal drugs, misuse of medicines and some prescribed or over-the-counter medicines can affect judgement, coordination, reaction time and awareness.

LO4 focus4.3 — State the hazards and potential risks linked with the use of drugs and alcohol.

Construction plant with warning against operating machinery while impaired by alcohol or drugs

Safety-critical work leaves no room for impairment.Machinery, ladders, vehicles and electrical work can turn a small loss of judgement into a serious incident.

How impairment can affect work

Poor judgement or concentration, reduced coordination and balance, slower reactions, and reduced awareness or alertness can all make work unsafe.

What can happen

The risks include unsafe decisions, falls, collisions, loss of control of plant or tools, and injury to the worker, colleagues or other people nearby.

ACTIVITY 8 · FIT OR NOT FIT?

Can the task start?

Decide whether the person is fit to begin the safety-critical task described.

CHAPTER 3

Medicines and safe work

Prescription and over-the-counter medicines can also affect safe work. Choose the best response in each situation.

ACTIVITY 9 · MEDICINE CHECK

Medication and safe work

Choose the safest response when medicine could affect alertness, concentration or coordination.

Site ruleIf medicine may affect concentration, coordination or alertness, follow the label and site arrangements and tell the appropriate supervisor before carrying out safety-critical work.

ACTIVITY 10 · SAFETY-CRITICAL DECISIONS

Stop or go?

Make the safe call. If there is a credible impairment risk, the safety-critical task should not simply carry on as normal.

Good practice is to follow the organisation’s drug and alcohol policy, manage the health and safety risk and support workers appropriately. Testing arrangements vary by employer and role.

EXTENDED LEARNING · CITY & GUILDS AC 4.3

Drugs, alcohol and medicines: the hazard is impairment

The health-and-safety issue is not a moral judgement about the person. It is whether alcohol, illegal drugs, misuse of substances, or some prescribed/over-the-counter medicines impair the worker’s ability to work safely.

Judgement and decision-making

Impairment can reduce hazard awareness, increase risk-taking and make it harder to follow a safe system or recognise when work should stop.

Reaction and coordination

Slower reactions, poor balance, blurred vision or reduced coordination become especially dangerous around traffic, plant, power tools and work at height.

Drowsiness and concentration

Some medicines can cause drowsiness or reduced concentration even when taken correctly. Workers should read warnings and seek suitable advice where medication may affect safety-critical work.

Potential risks on site

falling from height or stepping into an opening
being struck by or driving mobile plant unsafely
misusing tools, machinery or hazardous substances
poor manual-handling decisions
endangering co-workers or the public through delayed reactions

Safe response

Follow the organisation’s drug and alcohol policy. If you believe you are not fit for work, or medication may impair a safety-critical task, report the issue through the appropriate confidential route. Do not operate plant or carry out hazardous work while impaired.

Prescription does not automatically mean safe for every task.A medicine can be legitimate and still affect reaction time or alertness. The key question is fitness to carry out the work safely.

Exam focusQuestions usually test the safety effect — judgement, coordination, reaction time, concentration and awareness — rather than testing drug names.

LO4 · CHAPTER 4

Store It Safely

Poor storage can cause fire, explosion, harmful exposure, spills and environmental damage. Good storage keeps dangerous substances controlled until they are needed.

LO4 focus4.4 — State the importance of the correct storage of combustibles and chemicals on site.

Hazardous liquids and chemicals stored in drums and containers on a construction site

Storage is a control measure.Keep quantities down, use suitable labelled containers, separate incompatible substances and keep ignition sources away.

ACTIVITY 11 · STORAGE ZONES

Choose the best primary storage destination

Place every item first, then check the complete layout. These zones are physical storage destinations; incompatible chemicals still need segregation within suitable chemical storage.

ACTIVITY 12 · STORAGE FAULT CHECK

Spot the storage fault

Judge each situation as acceptable or a storage fault. Think about combustibles, fire, leaks, labels, ventilation and incompatible substances.

ACTIVITY 13 · DOCUMENT DETECTIVE

Which source should you check first?

Choose the primary source for the information being asked for. Product-specific hazards, handling, storage, first aid and spill information are key Safety Data Sheet information.

DSEAR reminderDangerous substances that can cause fire or explosion must be assessed and controlled. Keep only the minimum flammable quantity needed in the work area, control ignition sources and follow product information and site arrangements for segregation.

EXTENDED LEARNING · CITY & GUILDS AC 4.4

Why correct storage of combustibles and chemicals matters

Good storage prevents incompatible substances mixing, limits the amount involved in a fire or spill, protects containers from damage and keeps hazardous exposure away from people and ignition sources.

Fire and explosion

Flammable liquids, gases and other combustibles can ignite if stored near heat, sparks, smoking materials or incompatible substances. DSEAR requires risks from dangerous substances that can cause fire or explosion to be assessed and controlled.

Exposure and chemical reaction

Leaking, damaged or open containers can expose workers by skin contact, inhalation or splashes. Some chemicals react dangerously if mixed, so segregation information matters.

Spills and environmental harm

Secure, suitable containers and appropriate secondary containment can reduce spread if a leak occurs. Drains and watercourses should be protected according to site arrangements.

Identification and access

Keep substances in correctly labelled containers and use designated secure storage. Safety data sheets and COSHH assessments provide information on storage, incompatibility, PPE and emergency response.

Practical storage habitsKeep only the quantity needed at the workface; control ignition sources; keep lids closed; segregate incompatibles; store cylinders and containers as instructed; keep stores ventilated where required; protect from vehicle impact; maintain clear emergency access.

ExampleDecanting brick acid into an unlabelled drinks bottle creates several risks: somebody may mistake it for a drink, the container may be incompatible, emergency information is lost and the substance can no longer be reliably identified.

Exam focusIf the question asks why chemicals are stored correctly, think beyond theft: preventing fire/explosion, harmful exposure, reaction, spillage and accidental misuse are central safety reasons.

LO4 · CHAPTER 5

Clean Hands, Safe Health

Personal hygiene is a health control. Contamination on hands, clothing and surfaces can move into the mouth, onto the skin or into cuts.

LO4 focus4.5 — State the importance of personal hygiene within a construction environment.

Construction worker eating with dirty gloves beside a hazardous product, showing contamination transfer risk

The contamination journey is often invisible.Good welfare, clean hands, covered cuts and separating dirty work from eating and drinking all reduce exposure.

ACTIVITY 14 · CONTAMINATION CHAIN

Build the ingestion pathway

Put the four steps in order for one specific route: contamination travelling from the task to the mouth and being swallowed.

ACTIVITY 15 · HYGIENE HABITS

Safe or unsafe habit?

Judge the habits. Good hygiene protects the worker and also stops hazardous substances being carried into welfare areas, vehicles and home.

ACTIVITY 16 · CONTAMINATION BARRIER

Clean side or contaminated side?

Place every card on either the clean side or contaminated side first. When all cards are placed, select Check placements.

Key habitsWash hands before eating, drinking or smoking; use welfare facilities; cover cuts; keep contaminated PPE and workwear away from clean areas; and follow site arrangements for cleaning or disposal.

EXTENDED LEARNING · CITY & GUILDS AC 4.5

Personal hygiene is an exposure-control measure

Construction contamination can travel from the work to the body, food, vehicles and home. Good hygiene interrupts that route and is especially important with cement, dusts, chemicals, sewage and other contaminated materials.

Hands to mouth

Eating, drinking, smoking or vaping with contaminated hands can transfer hazardous substances into the mouth. Wash hands properly before breaks and use the welfare facilities provided.

Skin protection

Remove contamination promptly in the way specified by the COSHH assessment. Wet cement trapped in gloves, boots or clothing can cause serious burns; repeated contact can contribute to dermatitis.

Clean and dirty separation

Keep contaminated PPE and workwear away from eating areas and clean personal items. Follow site arrangements for cleaning, changing, storage and disposal.

Cuts and infection

Cover cuts and abrasions with suitable waterproof dressings where necessary. Contaminated water, soil, waste or sharps can introduce biological hazards through broken skin.

Welfare facilities are a control, not a luxury.Construction sites need suitable washing, toilet, drinking-water and rest arrangements. Workers should use them and keep eating/drinking areas separate from contaminated work.

Do not use solvents to clean skin.Use the washing/skin-care arrangements provided. Strong cleaning chemicals can damage the skin barrier and increase the risk of dermatitis.

Exam focusA question about hygiene is often really asking how contamination reaches the body. Look for handwashing, clean welfare areas, covering cuts and keeping contaminated clothing/PPE away from food.

LO4 · CHAPTER 6

The Asbestos Threat

Asbestos fibres are too small to see in the air. When asbestos-containing materials are disturbed, fibres can be inhaled and serious disease may develop decades later.

LO4 focus4.6 — State potential health risks from asbestos exposure. · 4.7 — State the types of asbestos waste.

Asbestos hazard area in an older building with warning signs and asbestos-containing materials

Around 5,000 people die each year from asbestos-related disease.Any building built or refurbished before 2000 may contain asbestos. Never rely on appearance alone.

WHY EXPOSURE MATTERS

Four serious asbestos-related diseases

Asbestos-related disease often develops many years after exposure, so preventing fibre release and inhalation matters now.

Mesothelioma

A cancer of the lining around the lungs or abdomen that is strongly linked with asbestos exposure.

Asbestos-related lung cancer

Lung cancer caused by past exposure to asbestos fibres.

Asbestosis

Serious scarring of the lungs that can cause progressive breathlessness.

Pleural thickening

Thickening of the lining around the lungs that can restrict lung expansion and cause breathlessness.

ACTIVITY 17 · STOP OR CONTINUE?

Make the asbestos call

Choose the safe action. Suspected asbestos is not something to “have a quick go at”.

CHAPTER 6

Where asbestos may be found

You cannot identify asbestos by sight, but you should know where asbestos-containing materials were commonly used so that you know when to stop and check information.

Pipe & boiler insulation

Lagging and insulation around heating systems.

Boards & panels

Asbestos insulating board in ceilings, partitions and fire protection.

Cement products

Roof sheets, soffits, gutters, flues and other cement-bonded products.

Finishes & flooring

Some textured coatings, floor tiles, backing papers and adhesives.

ACTIVITY 18 · EVIDENCE, NOT EYESIGHT

What can you safely conclude?

Choose the statement best supported by the evidence provided. Never identify asbestos by appearance alone.

EXTENDED LEARNING · CITY & GUILDS AC 4.6

Asbestos: understand why disturbance is dangerous

Asbestos-containing materials can be present in buildings built or refurbished before 2000. The danger arises when fibres are released and inhaled. You cannot reliably identify asbestos just by looking at a material.

How exposure happens

Drilling, cutting, breaking, sanding or otherwise disturbing asbestos-containing material can release microscopic fibres into the air. Fibres may then be inhaled deep into the lungs.

Main diseases

Asbestos exposure can cause mesothelioma, asbestos-related lung cancer and asbestosis. Other pleural disease can also occur. These diseases usually have a long latency period, so serious harm may appear decades after exposure.

Where it may be found

Examples include insulation board, pipe lagging, sprayed coatings, textured coatings, asbestos cement sheets/panels, soffits, some floor tiles and other older building products.

What a general worker should do

If suspect material is unexpectedly uncovered, stop work, avoid further disturbance, keep others away as required by site arrangements and report it. Competent people can check the asbestos information and decide the safe response.

Never break, scrape or drill material to “see if it is asbestos”.Identification requires the correct information and, where sampling is needed, competent analysis. Visual appearance alone is not reliable.

ExampleDuring refurbishment a board behind an old service box is uncovered and the asbestos register has not been checked. The safe response is to stop and report, not to remove a small piece so the job can continue.

Exam focusThe key health route is inhalation of airborne fibres. The absence of immediate symptoms does not mean the exposure is harmless.

CHAPTER 6 - WASTE & RESPONSE

Know the waste type — then contain it

HSE carriage guidance distinguishes bonded asbestos products from fibrous / unbonded asbestos waste. Both need proper control, packaging, labelling and disposal.

1 · Bonded asbestos waste

Asbestos is securely bound in cement, plastic or another binder so fibres cannot readily escape during carriage. Examples include intact asbestos-cement products and some vinyl floor tiles.

2 · Fibrous / unbonded asbestos waste

Asbestos is not securely bound. Examples include thermal insulation and asbestos insulating board (AIB). This waste is treated as dangerous for carriage.

Containment still matters: Asbestos waste must be packaged to prevent fibre release. Smaller waste is commonly double-bagged; large intact items should not be broken up and can be double-wrapped and labelled before appropriate disposal.

ACTIVITY 19 · WASTE TYPE CHECK

Bonded or fibrous / unbonded?

Choose the asbestos-waste type that best matches each example. Packaging is a separate control.

ACTIVITY 20 · SAFE RESPONSE CHECKLIST

Select every immediate safe action

More than one action belongs in the response. Select every action that should happen when suspected asbestos is unexpectedly uncovered, then check the complete set.

Do not disturb it to “check”.Stop work, prevent further disturbance, keep others away as required by site arrangements and report it so competent people can assess the material and decide what happens next.

EXTENDED LEARNING · CITY & GUILDS AC 4.7

Asbestos waste: bonded and fibrous/unbonded material

City & Guilds requires two types of asbestos waste. HSE carriage guidance distinguishes bonded/manufactured asbestos products from fibrous or unbonded asbestos waste. Both must be treated under the correct asbestos and waste arrangements.

Bonded / manufactured products

Fibres are bound in a matrix so they are less readily released while the material remains intact — for example some asbestos cement products and certain floor tiles. “Bonded” does not mean safe to break, drill or throw in ordinary waste.

Fibrous / unbonded waste

Materials such as thermal insulation or some asbestos insulating board can release fibres more readily, especially when damaged. HSE treats this as dangerous for carriage and it requires suitable certified packaging and controls.

Both are controlled asbestos waste.Asbestos waste is hazardous waste in England and Wales (special waste in Scotland) above the relevant asbestos content threshold. It must follow the approved waste route and duty-of-care arrangements.

Do not reduce the size by breaking it.Large asbestos-containing items may need wrapping/containment methods that avoid further fibre release. Packaging and transport decisions belong to competent people following the asbestos plan and waste rules.

Exam focusIf asked for the two types in this learning outcome, remember bonded and fibrous/unbonded. Do not answer with the old colour names of asbestos fibres.

LO4 · CHAPTER 7

Your Last Line of Defence

PPE can reduce exposure, but it protects only the wearer and only while it is suitable, fitted, maintained and used correctly. It sits at the bottom of the hierarchy of control.

LO4 focus4.8 — State the types of PPE that may be used when dealing with hazardous materials.

Hierarchy of control illustration showing PPE as the final level of protection

PPE is important — but it is not Plan A.Eliminate, substitute and control the hazard first. Then use suitable PPE for the remaining risk.

Reusable half-mask respirator with replaceable filters

RPEProtects breathing where suitable respiratory protection is required.

Protective glovesSelected for the specific chemical or material.

Eye / face protectionGoggles or face protection for splash, dust or particles.

Protective work coveralls for construction tasks

Protective clothingCoveralls or other clothing selected for the exposure.

Black protective safety boot with reinforced toe and treaded sole

Protective footwearSuitable safety footwear can protect the feet from hazardous-liquid splash and contamination where the assessment requires it.

ACTIVITY 21 · PPE MATCH

Build the protection kit

Higher-level controls are already in place. Use only the PPE needs stated in each risk assessment. Each scenario shows how many items to choose; select exactly that number, then check the protection kit.

ACTIVITY 22 · HIERARCHY CHALLENGE

Put the controls in order

Select the five control levels in order from most effective to least effective.

1EliminateRemove the hazard.

2SubstituteUse a safer alternative.

3EngineeringIsolate or control at source.

4AdministrativeChange how work is organised.

5PPEProtect the wearer.

ACTIVITY 23 · PPE CHECK

Acceptable or a fault?

Judge the PPE detail shown in each statement. Suitability, fit, condition, compatibility and storage all matter.

Conformity markingFor PPE placed on the Great Britain market, businesses can use CE or UKCA marking under the current product regime. A conformity mark does not replace the need to select PPE that is suitable for the actual hazard and task.

EXTENDED LEARNING · CITY & GUILDS AC 4.8

PPE for hazardous materials: last line, correct selection

The evidence requirement asks for three types of PPE, but learners should know a wider range and understand that PPE is selected from the risk/COSHH assessment. It does not replace control at source.

PPE / RPE	Examples of protection	Important limitation
Gloves	chemical/contact protection where the glove material is suitable for the substance	wrong glove material may give poor protection; contaminated gloves can spread exposure
Eye / face protection	goggles or face shield against splash, dust or particles as selected for the task	must suit the hazard and work with other PPE
Protective clothing / coveralls	reduces skin/clothing contamination	needs correct removal, cleaning or disposal arrangements
Respiratory protective equipment (RPE)	selected respirator or breathing equipment for airborne hazards	must be suitable; tight-fitting RPE requires fit testing and a good face seal
Safety footwear	protects feet from contamination, sharp objects, impact and site conditions as appropriate	does not remove the source of exposure

Three-stage thinkingFirst prevent or reduce exposure at source. Then use engineering/organisational controls. PPE/RPE deals with remaining risk and protects only the wearer while it is correctly selected and used.

Asbestos is specialist work.The fact that asbestos PPE/RPE exists does not mean an untrained worker should continue after discovering suspect material. Stop, report and follow the asbestos arrangements.

Exam focusBe ready to name at least three suitable types — for example gloves, eye/face protection, protective clothing and RPE — and match them to the hazard rather than assuming one item protects against everything.

Reference basis: City & Guilds 6072-51 Qualification Handbook v2.3; HSE COSHH, construction dust, cement, asbestos and PPE/RPE guidance. The learning extension keeps the original LO4 activities and reporting logic intact.

CHAPTER 8 · ACTIVITY 24

LO4 Challenge - Part 1

Complete all 12 questions to review the full Learning Outcome 4 content.

4.1

Hazardous substance groups

4.2

Common health risks

4.3–4.5

Impairment, storage & hygiene

4.6–4.8

Asbestos & PPE

Ready?Select Next to begin. Your first response to each question is recorded for the practice score.

FINAL CHALLENGE · PART 1

Questions 1–6

Answer all six. Wrong answers do not reveal the correct choice.

FINAL CHALLENGE - PART 2

Questions 7-12

Finish the final six questions to complete LO4.

COMPLETION RECORD

Risks to Health in Construction — LO4

A printable record of the learner’s progress through the complete Sunday Club learning book.

Learner—

Provider / route—

Activities complete0/24

Final first-time score0/12

Chapter	LO4 coverage	Activities	Status

Reference

—

Date completed

—

Assessment note

Use this review to check your understanding across all eight LO4 areas. Revisit any chapter where you are unsure.

LO4 criterion	Book chapter	Required breadth
4.1 Main groups of substances hazardous to health	Chapter 1 — Hidden Hazards	Five substance groups covered using HSE construction forms: solids, liquids, vapours, gases and micro-organisms, with crossover recognised where it occurs.
4.2 Common risks to health	Chapter 2 — Health Under Attack	Five health risks
4.3 Drugs and alcohol	Chapter 3 — Fit for Work	Hazards and potential risks from impairment
4.4 Storage of combustibles and chemicals	Chapter 4 — Store It Safely	Importance of correct storage
4.5 Personal hygiene	Chapter 5 — Clean Hands, Safe Health	Importance of hygiene in preventing exposure
4.6 Health risks from asbestos	Chapter 6 — The Asbestos Threat	Mesothelioma, asbestos-related lung cancer, asbestosis and pleural thickening; delayed effects
4.7 Types of asbestos waste	Chapter 6 — The Asbestos Threat	Bonded asbestos waste and fibrous / unbonded asbestos waste; containment taught separately
4.8 PPE for hazardous materials	Chapter 7 — Your Last Line of Defence	Five PPE types taught; at least three required