NEBOSH Health and Safety Management for Construction (UK) — Questions and Answers

Question 1: What is the most common type of occupational ill health in the UK construction industry?

Hearing loss
Skin diseases
Respiratory diseases
Musculoskeletal disorders (Correct answer)

Correct answer: Musculoskeletal disorders

Musculoskeletal disorders (MSDs) are the most common type of occupational ill health in construction, caused by manual handling of heavy materials, repetitive movements, awkward postures, and whole-body vibration. The Manual Handling Operations Regulations 1992 require employers to avoid hazardous manual handling where reasonably practicable.

Question 2: What is the risk of leaving an excavation open overnight on a public site?

Unauthorised entry and falls, particularly by children (Correct answer)
Increased erosion from overnight dew
Soil drying out and becoming unstable
Noise from settling soil disturbing nearby residents

Correct answer: Unauthorised entry and falls, particularly by children

Leaving excavations open overnight creates a risk of unauthorised entry, particularly by children. Robust barriers, warning lights and even covering the excavation may be required to prevent falls outside working hours.

Question 3: Which permit-to-work system is used for excavation work near live underground services?

Hot work permit
Electrical isolation permit
Confined space entry permit
Excavation permit (Correct answer)

Correct answer: Excavation permit

An excavation permit is used when working near live underground services. It records the checks carried out, identifies the services present, specifies the methods to be used and identifies who has authorised the work.

Question 4: What is the primary legislation governing fire safety on construction sites in England?

The Building Regulations Part B only
The Factories Act 1961
The Regulatory Reform (Fire Safety) Order 2005, supplemented by CDM 2015 and Joint Code of Practice on Fire Prevention (Correct answer)
The Fire Services Act 1947

Correct answer: The Regulatory Reform (Fire Safety) Order 2005, supplemented by CDM 2015 and Joint Code of Practice on Fire Prevention

The Regulatory Reform (Fire Safety) Order 2005 (RRFSO) applies to all workplaces including construction sites. It requires a responsible person to carry out a fire risk assessment and implement appropriate fire precautions. The Joint Code of Practice on Fire Prevention in Construction (published by the Fire Protection Association) provides specific construction guidance.

Question 5: What is the primary risk from unprotected excavations adjacent to public footpaths?

Dust affecting air quality
Soil erosion from foot traffic
Noise disturbance to pedestrians
Members of the public falling into the excavation (Correct answer)

Correct answer: Members of the public falling into the excavation

Unprotected excavations next to public footpaths present a serious risk of members of the public, including children and vulnerable people, accidentally falling in. Robust barriers, lighting and warning signs are required.

Question 6: Before commencing any excavation work, which essential check must be carried out?

Check the weather forecast
Survey for underground services (Correct answer)
Assess the colour of the soil
Measure the noise levels

Correct answer: Survey for underground services

Before any excavation begins, a survey for underground services (gas, electricity, water, telecommunications, sewers) must be carried out. Striking an underground service can cause death or serious injury.

Question 7: Asbestos is still present in many buildings being refurbished or demolished. What types of asbestos work require a licence from the HSE?

Only work with blue asbestos (crocidolite)
No licence is ever required for asbestos work
Work with asbestos insulation, asbestos coating, and asbestos insulating board (unless meeting exemption conditions) (Correct answer)
All work that encounters asbestos of any type

Correct answer: Work with asbestos insulation, asbestos coating, and asbestos insulating board (unless meeting exemption conditions)

Under the Control of Asbestos Regulations 2012, a licence from HSE is required for work with asbestos insulation, asbestos coating, and asbestos insulating board (AIB), unless the work meets specific exemption conditions (short duration, low disturbance). Work with asbestos cement and textured coatings is non-licensable but still requires compliance with the regulations.

Question 8: Under the Manual Handling Operations Regulations, what is the employer's duty regarding pregnant workers?

To provide a back support belt to all pregnant workers
No additional duty exists for pregnant workers under MHOR
To carry out a specific risk assessment for pregnant workers and adjust duties to remove risks to them and their unborn child (Correct answer)
To automatically exclude pregnant workers from all manual handling operations

Correct answer: To carry out a specific risk assessment for pregnant workers and adjust duties to remove risks to them and their unborn child

The MHOR require employers to assess the specific risks to pregnant workers and those who have recently given birth or are breastfeeding. Where significant risk is identified, duties must be adjusted, alternative work offered or suspension on full pay considered.

Question 9: Under CDM 2015, who is defined as the client?

The main contractor on site
The person who designs the structure
The HSE inspector
Any person for whom a construction project is carried out (Correct answer)

Correct answer: Any person for whom a construction project is carried out

Under CDM 2015, the client is any person (including a business) for whom a construction project is carried out. Clients have specific legal duties including appointing a Principal Designer and Principal Contractor for notifiable projects.

Question 10: How often must excavations be inspected under the CDM Regulations 2015?

Weekly
At the start of each shift, after any event likely to affect stability, and after any accidental fall of material (Correct answer)
Monthly
Only at the start of the project

Correct answer: At the start of each shift, after any event likely to affect stability, and after any accidental fall of material

CDM 2015 Schedule 3 requires excavation inspections at the start of every shift before work commences, after any event likely to have affected strength or stability (such as heavy rain, frost, or nearby vehicle movement), and after any accidental fall of rock or earth. A competent person must carry out and record inspections.

Question 11: What is the recommended maximum travel distance to a fire exit on a construction site where there is a single escape route?

100 metres
No maximum distance is specified
50 metres regardless of escape routes
25 metres (or 45 metres where alternative routes are available) (Correct answer)

Correct answer: 25 metres (or 45 metres where alternative routes are available)

Fire safety guidance recommends a maximum travel distance of 25 metres to the nearest exit where only one escape route is available, extending to 45 metres where alternative routes exist. On construction sites, these distances may need to be shorter due to the presence of combustible materials, restricted routes, and temporary structures.

Question 12: Mental health is increasingly recognised as a significant issue in the UK construction industry. What workplace factors contribute to poor mental health among construction workers?

Long working hours, job insecurity, time away from family, demanding physical work, bullying culture, and financial pressures (Correct answer)
Only office-based construction staff are affected
Mental health is a personal issue unrelated to work
Construction workers do not experience mental health issues

Correct answer: Long working hours, job insecurity, time away from family, demanding physical work, bullying culture, and financial pressures

The UK construction industry has disproportionately high rates of mental ill health and suicide. Contributing factors include long and irregular hours, job insecurity (especially for self-employed workers), time away from home, physically demanding work, a culture that discourages discussing mental health, and financial pressures from subcontracting chains. Employers have a duty to assess psychosocial risks.

Question 13: What is the primary hazard that must be controlled when carrying out excavation work on a construction site?

Excessive noise from plant
Dust generation
Surface water drainage
Collapse of the excavation sides (Correct answer)

Correct answer: Collapse of the excavation sides

The collapse of excavation sides is the primary and most dangerous hazard associated with excavation work. It can bury workers instantly and the sudden nature of collapse means there is often no time to escape.

Question 14: Which regulations specifically require employers to avoid hazardous manual handling operations where reasonably practicable?

Provision and Use of Work Equipment Regulations 1998
Health and Safety at Work etc. Act 1974
Management of Health and Safety at Work Regulations 1999
Manual Handling Operations Regulations 1992 (Correct answer)

Correct answer: Manual Handling Operations Regulations 1992

The Manual Handling Operations Regulations 1992 (MHOR) require employers to avoid hazardous manual handling operations where reasonably practicable and, where they cannot be avoided, to assess and reduce the risk of injury as far as reasonably practicable.

Question 15: What is a 'permit to work' system used for in electrical work?

To formally control and authorise electrical work, ensuring isolation and safe conditions before work begins (Correct answer)
To record the names of all workers on the electrical installation
To document the electrical layout of the building
To log all electrical faults found during inspection

Correct answer: To formally control and authorise electrical work, ensuring isolation and safe conditions before work begins

A permit to work for electrical work formally controls who can work on electrical systems, ensures proper isolation has been carried out, specifies the work to be done and authorises only competent persons to proceed. It prevents accidental re-energisation.

Question 16: What type of fire extinguisher should be used on an electrical fire?

Foam extinguisher
Water extinguisher
CO2 (carbon dioxide) or dry powder extinguisher (Correct answer)
Wet chemical extinguisher

Correct answer: CO2 (carbon dioxide) or dry powder extinguisher

CO2 and dry powder extinguishers are safe to use on electrical fires. Water, foam and wet chemical extinguishers are conductive and must never be used on live electrical equipment as they can cause electrocution.

Question 17: Under the Work at Height Regulations 2005, what is the first step in the hierarchy for managing the risk of working at height?

Use collective fall prevention measures such as guardrails
Use personal fall protection equipment such as harnesses
Avoid work at height where it is reasonably practicable to do so (Correct answer)
Minimise the distance and consequences of a fall

Correct answer: Avoid work at height where it is reasonably practicable to do so

The Work at Height Regulations 2005 establish a clear hierarchy: first avoid work at height altogether (e.g., assemble at ground level then crane into position); if unavoidable, use work equipment to prevent falls (guardrails, scaffolds); then minimise fall distance and consequences (safety nets, airbags).

Question 18: CDM 2015 requires a construction phase plan to be prepared before the construction phase begins. Who must prepare this document?

Principal Contractor (Correct answer)
Health and Safety Executive
Principal Designer
Client

Correct answer: Principal Contractor

The Principal Contractor must prepare the construction phase plan before construction begins. It sets out the health and safety arrangements for managing the project during the construction phase.

Question 19: What is the purpose of a Construction Phase Plan?

To document injuries and incidents that occur on site
To outline the commercial programme for completing the works
To record the design decisions made before construction
To set out the arrangements for managing health and safety during the construction phase (Correct answer)

Correct answer: To set out the arrangements for managing health and safety during the construction phase

The Construction Phase Plan is prepared by the Principal Contractor and sets out the arrangements, site rules and specific measures for managing health and safety risks during the construction phase of the project.

Question 20: What is a Workplace Exposure Limit (WEL) and how is it used in construction health risk management?

The minimum temperature at which work should stop
The longest shift length permitted by law
The maximum weight that can be manually handled
The maximum concentration of an airborne substance averaged over a reference period, above which exposure should not occur (Correct answer)

Correct answer: The maximum concentration of an airborne substance averaged over a reference period, above which exposure should not occur

A WEL is the maximum concentration of an airborne substance (expressed in mg/m3 or ppm) to which workers may be exposed, averaged over either 8 hours (long-term) or 15 minutes (short-term). WELs are listed in EH40. Exposure must be reduced to as low as reasonably practicable, and in any case must not exceed the WEL.

Question 21: What is the purpose of a manual handling risk assessment?

To set weight limits for all workers on site
To record all injuries caused by manual handling
To identify hazardous operations and determine what control measures are needed to reduce injury risk (Correct answer)
To provide training in safe lifting technique

Correct answer: To identify hazardous operations and determine what control measures are needed to reduce injury risk

A manual handling risk assessment identifies all potentially hazardous manual handling operations, assesses the risks using the TILE framework, and determines what control measures are needed to reduce the risk of injury as far as reasonably practicable.

Question 22: When is it acceptable to use a ladder as a work platform on a construction site?

Never — ladders are only for access
Only for light work of short duration (up to 30 minutes) where the risk assessment shows a ladder is the most appropriate equipment (Correct answer)
For any task regardless of duration
Only when scaffolding is not available from the supplier

Correct answer: Only for light work of short duration (up to 30 minutes) where the risk assessment shows a ladder is the most appropriate equipment

Ladders may be used as a work platform only where a risk assessment shows the task is low-risk, short duration (generally up to 30 minutes), requires only light work (one hand can maintain three points of contact), and no better alternative is reasonably practicable. They remain primarily access equipment.

Question 23: Leptospirosis (Weil's disease) is a risk on construction sites. How is it transmitted and what workers are most at risk?

Transmitted by insect bites; workers in rural areas only
Transmitted through contact with water or soil contaminated with infected rat urine; workers in excavations, drains, and waterways are most at risk (Correct answer)
Transmitted by airborne droplets; office workers are most at risk
Transmitted by skin contact with cement; bricklayers are most at risk

Correct answer: Transmitted through contact with water or soil contaminated with infected rat urine; workers in excavations, drains, and waterways are most at risk

Leptospirosis is caused by Leptospira bacteria found in rat urine. It enters through cuts, abrasions, or mucous membranes following contact with contaminated water or soil. Construction workers in excavations, drainage work, and near waterways are at highest risk. Controls include covering cuts, washing hands, wearing gloves, and not eating or drinking near contaminated areas.

Question 24: What is the COSHH assessment for dust used for?

To record all dust-related illnesses on site
To set the dust suppression schedule
To identify hazardous dusts, assess exposure levels and determine appropriate control measures (Correct answer)
To provide a list of dust types found on the site

Correct answer: To identify hazardous dusts, assess exposure levels and determine appropriate control measures

A COSHH assessment for dust identifies the types of dust generated, assesses how much workers are exposed to (compared with WELs), determines whether exposure is adequately controlled, and specifies control measures to protect workers' health.

Question 25: What is the primary purpose of trench support (shoring) during excavation work?

To support equipment placed alongside the trench
To prevent the collapse of trench sides, which could bury workers (Correct answer)
To provide a working platform at the bottom
To keep the trench dry

Correct answer: To prevent the collapse of trench sides, which could bury workers

Trench support systems (shoring, trench boxes, sheet piling, battering) prevent the collapse of excavation sides, which is one of the most serious hazards in construction. Unsupported trenches can collapse without warning, burying workers under tonnes of soil. One cubic metre of soil weighs approximately 1.5-2 tonnes.

Question 26: What is the significance of the IP (Ingress Protection) rating for electrical equipment used outdoors?

It specifies the maintenance interval for the equipment
It indicates the level of protection against dust and moisture ingress (Correct answer)
It identifies the voltage rating of the equipment
It indicates the maximum current the equipment can carry

Correct answer: It indicates the level of protection against dust and moisture ingress

The IP rating describes the level of protection an electrical enclosure has against solid particles (first digit) and liquids (second digit). For outdoor construction use, equipment should have a suitable IP rating (e.g., IP54 or higher) to withstand rain and dust.

Question 27: What type of roof access equipment distributes the worker's weight and prevents them from sliding on a pitched roof?

MEWP
Step ladder
Roof ladder (cat ladder) (Correct answer)
Extension ladder

Correct answer: Roof ladder (cat ladder)

A roof ladder (cat ladder) is hooked over the ridge of a pitched roof and distributes the worker's weight over a wider area. It provides footholds and prevents sliding, allowing safe work on sloped roof surfaces.

Question 28: Construction workers are exposed to UV radiation from the sun. What is the long-term health risk and what controls should be implemented?

Sunburn only with no long-term effects
Vitamin D deficiency
Eye strain from bright light only
Skin cancer (including melanoma); controls include scheduling work to avoid peak UV, providing shade, and covering exposed skin (Correct answer)

Correct answer: Skin cancer (including melanoma); controls include scheduling work to avoid peak UV, providing shade, and covering exposed skin

Outdoor construction workers have significantly higher rates of skin cancer due to chronic UV exposure. Controls include scheduling outdoor work outside peak UV hours (11am-3pm), providing shade for break areas, wearing long-sleeved clothing and wide-brimmed hats, and applying sunscreen (minimum SPF 30). Awareness training about skin checks is also important.

Question 29: A construction worker develops occupational asthma from exposure to isocyanates in two-pack spray paints. Under UK health and safety law, what should the employer have done to prevent this?

Carried out a COSHH assessment, provided LEV or RPE with assigned protection factor, health surveillance, and training on isocyanate risks (Correct answer)
Ensured the worker was not allergic before employment
Provided a basic dust mask
Nothing — occupational asthma cannot be prevented

Correct answer: Carried out a COSHH assessment, provided LEV or RPE with assigned protection factor, health surveillance, and training on isocyanate risks

Isocyanates are a leading cause of occupational asthma. Under COSHH, the employer must assess the risk, consider elimination or substitution (e.g., brush application instead of spraying), provide engineering controls (LEV, spray booths), supply suitable RPE with adequate assigned protection factor, implement health surveillance, and provide information and training.

Question 30: What hazardous atmosphere might accumulate in a deep excavation, and what precautions are required?

Only dust is a concern
Deep excavations have no atmospheric hazards
Carbon dioxide, methane, or hydrogen sulphide can accumulate; gas monitoring and ventilation are required (Correct answer)
Only radon is a risk

Correct answer: Carbon dioxide, methane, or hydrogen sulphide can accumulate; gas monitoring and ventilation are required

Deep excavations can accumulate hazardous gases including CO2 (from decomposing organic matter), methane (from landfill or natural deposits), and H2S (from sewers or contaminated land). Oxygen depletion can also occur. Gas monitoring before entry, continuous monitoring during work, and provision of ventilation are essential precautions.

Question 31: Under the Control of Substances Hazardous to Health Regulations 2002 (COSHH), what is the hierarchy of control for managing exposure to hazardous substances?

Monitor exposure and treat any health effects
Provide PPE first, then consider other measures
Train workers and rely on their vigilance
Eliminate, substitute, enclose, LEV, safe systems of work, then PPE as last resort (Correct answer)

Correct answer: Eliminate, substitute, enclose, LEV, safe systems of work, then PPE as last resort

COSHH requires a hierarchy: first eliminate the substance; if not possible, substitute with a less hazardous alternative; then use engineering controls (enclosure, local exhaust ventilation); then administrative controls (safe systems of work, reduced exposure time); and finally PPE as a last resort. PPE should never be the primary control.

Question 32: What is the safe distance that should be maintained from overhead power lines when using plant such as cranes or excavators?

At least 3 metres from uninsulated overhead lines under 33kV (Correct answer)
5 metres from all overhead lines
1 metre from all overhead lines
No fixed distance — just avoid contact

Correct answer: At least 3 metres from uninsulated overhead lines under 33kV

The safe working distance from uninsulated overhead lines depends on voltage, but for lines up to 33kV, a minimum exclusion zone of 3 metres is typically required. Higher voltage lines require greater distances and specialist assessment.

Question 33: What is the role of a fire warden on a construction site?

To fight fires in their area before the fire service arrives
To inspect fire extinguishers monthly
To maintain a log of all hot work activities
To assist with evacuation, check areas are clear, account for persons at the assembly point and liaise with the fire service (Correct answer)

Correct answer: To assist with evacuation, check areas are clear, account for persons at the assembly point and liaise with the fire service

Fire wardens assist with evacuation by directing workers to exits, sweep their designated areas to confirm all have left, account for persons at the assembly point and provide key information to the fire service on arrival.

Question 34: What is the main risk from 'back-feeding' when working on a generator installation?

The generator overheating
The generator exceeding its rated output
Current flowing back from the generator into the supply network, endangering workers on the network (Correct answer)
Voltage fluctuations damaging site equipment

Correct answer: Current flowing back from the generator into the supply network, endangering workers on the network

Back-feeding occurs when a generator energises the incoming mains supply network. This can electrocute power company workers who believe the network is de-energised. Proper isolation interlocks must prevent simultaneous connection of the generator and mains.

Question 35: What is the minimum standard of welfare facilities that must be provided on a construction site under CDM 2015 Schedule 2?

Toilets, washing facilities, drinking water, changing rooms, and rest facilities (Correct answer)
Toilets only
Whatever the principal contractor considers adequate
Toilets and drinking water only

Correct answer: Toilets, washing facilities, drinking water, changing rooms, and rest facilities

CDM 2015 Schedule 2 specifies minimum welfare facilities including: sanitary conveniences, washing facilities (with hot and cold water, soap, and towels), drinking water, changing rooms and lockers, and rest areas with seating and facilities for preparing hot drinks and warming food.

Question 36: What is the purpose of a trench box (also called a drag box) in excavation work?

To filter groundwater from an excavation
To store tools safely in a trench
To provide a pre-made support system that can be dragged along as the trench progresses (Correct answer)
To measure the depth of an excavation

Correct answer: To provide a pre-made support system that can be dragged along as the trench progresses

A trench box or drag box is a steel or aluminium pre-fabricated support system that is placed in the excavation and dragged forward as work progresses. It protects workers from collapse without the need for traditional timber shoring.

Question 37: Which enforcement notice requires an immediate cessation of work due to risk of serious personal injury?

Improvement Notice
Enforcement Notice
Prohibition Notice (Correct answer)
Remedial Notice

Correct answer: Prohibition Notice

A Prohibition Notice issued by an HSE inspector requires the immediate cessation of an activity that involves a risk of serious personal injury. Work cannot resume until the specified remedial action has been taken.

Question 38: What is the purpose of health surveillance under the COSHH Regulations?

To detect early signs of work-related ill health so that action can be taken to prevent progression (Correct answer)
To determine whether workers are fit for employment
To satisfy insurance requirements only
To monitor productivity levels

Correct answer: To detect early signs of work-related ill health so that action can be taken to prevent progression

Health surveillance aims to detect adverse health effects at an early, reversible stage. For construction workers, this may include lung function testing (for dust exposure), skin checks (for cement dermatitis), hearing tests (for noise exposure), and HAVS assessments. Results should feed back into risk assessment to improve controls.

Question 39: Which technique is used to check for the presence of underground cables using radio frequency detection?

Trial pit excavation
Cable Avoidance Tool (CAT) scanning (Correct answer)
Ground Penetrating Radar only
Ultrasonic testing

Correct answer: Cable Avoidance Tool (CAT) scanning

A Cable Avoidance Tool (CAT scanner) uses electromagnetic signals to detect buried electricity cables, gas and water mains, and other services. Used with a signal generator (genny), it significantly reduces the risk of striking services.

Question 40: A construction worker regularly cuts concrete blocks with a disc cutter. What is the primary health risk and what control measure is most effective?

Noise exposure; ear plugs are most effective
UV exposure; sunscreen is most effective
Respirable crystalline silica causing silicosis; water suppression or on-tool extraction is most effective (Correct answer)
Whole-body vibration; anti-vibration gloves are most effective

Correct answer: Respirable crystalline silica causing silicosis; water suppression or on-tool extraction is most effective

Cutting concrete generates respirable crystalline silica (RCS) dust, which causes silicosis and is associated with lung cancer. Water suppression (wet cutting) or on-tool local exhaust ventilation (LEV) are the most effective controls as they capture dust at source. RPE should be used as additional protection, not as the primary control.

Question 41: At what depth does an excavation typically require a formal support system to prevent collapse?

Always at depths exceeding 3 metres
When the sides cannot be safely battered back, typically from 1.2 metres (Correct answer)
Only at depths exceeding 5 metres
At any depth in sandy soil

Correct answer: When the sides cannot be safely battered back, typically from 1.2 metres

While there is no absolute depth rule, excavations where the sides cannot be safely battered back — commonly from 1.2 metres — require a formal support system. Sandy or loose soils may require support at shallower depths.

Question 42: What precautions should be taken when storing flammable liquids on a construction site?

Store as many containers as possible to avoid frequent deliveries
Store in a dedicated, ventilated, fire-resisting store away from ignition sources and in quantities no more than necessary (Correct answer)
Store in the site office for convenience
Store in open containers to allow vapour to dissipate

Correct answer: Store in a dedicated, ventilated, fire-resisting store away from ignition sources and in quantities no more than necessary

Flammable liquids must be stored in a designated fire-resisting store (or metal cabinet), kept well ventilated to prevent vapour build-up, away from ignition sources, and in the minimum quantity needed. Containers must be kept closed when not in use.

Question 43: What is the fire risk of accumulated construction waste on a site?

It reduces the risk of fire by covering potential ignition sources
It provides large quantities of combustible fuel that can allow a fire to develop and spread rapidly (Correct answer)
It only presents a slip/trip hazard, not a fire hazard
Construction waste is generally non-combustible

Correct answer: It provides large quantities of combustible fuel that can allow a fire to develop and spread rapidly

Accumulated construction waste — particularly timber off-cuts, cardboard, packaging and foam offcuts — provides abundant fuel for fire. Regular removal of combustible waste reduces the fire load on the site significantly.

Question 44: What is the maximum height for which a freestanding mobile tower scaffold can be erected on a firm, level surface (3T method)?

Height-to-base ratio of 3:1 indoors and 3.5:1 outdoors is not correct — the ratio is 3:1 outdoors and 3.5:1 indoors
The height depends on the base dimensions: 3.5 times the minimum base width indoors (Correct answer)
The height should not exceed 12 metres
The height must be calculated by a structural engineer in all cases

Correct answer: The height depends on the base dimensions: 3.5 times the minimum base width indoors

Using the 3T (Through The Trap) method, a mobile tower scaffold can be erected up to 3.5 times its minimum base dimension when used indoors on a firm, level surface, and up to 3 times outdoors. The base dimensions determine the maximum safe height.

Question 45: What are the key elements of a manual handling risk assessment on a construction site using the TILE acronym?

Temperature, Illumination, Layout, and Ergonomics
Training, Insurance, Legislation, and Enforcement
Time, Inspection, Lifting, and Equipment
Task, Individual, Load, and Environment (Correct answer)

Correct answer: Task, Individual, Load, and Environment

TILE is the framework for manual handling assessment: Task (does it involve twisting, stooping, reaching?), Individual (does the worker have any health conditions affecting capability?), Load (is it heavy, bulky, unstable, difficult to grip?), and Environment (are there space constraints, uneven floors, temperature extremes?). Each element must be assessed and controls applied.

Question 46: Under the Work at Height Regulations 2005, what must be in place before any work at height is carried out?

Written permission from the HSE
Only a verbal instruction from the site manager
A medical certificate for each worker
A suitable and sufficient risk assessment with a rescue plan for foreseeable emergencies (Correct answer)

Correct answer: A suitable and sufficient risk assessment with a rescue plan for foreseeable emergencies

Regulation 4 requires proper planning, including risk assessment, selection of appropriate work equipment, and emergency rescue procedures. No work at height should commence without considering how a fallen or stranded worker would be rescued promptly to prevent suspension trauma.

Question 47: What inspection regime applies to a scaffold that is in use for more than seven days?

Inspection only when a defect is suspected
Monthly inspection by an independent inspector
Daily inspection by any worker
Inspection at least every seven days (Correct answer)

Correct answer: Inspection at least every seven days

Under the Work at Height Regulations 2005, a scaffold in use for more than seven days must be inspected at intervals not exceeding seven days. This ensures that deterioration from weather or use is identified promptly.

Question 48: What protective measures should be in place around an open excavation to prevent people and vehicles from falling in?

Verbal warnings to workers at the start of each shift
Warning tape only
Substantial barriers or guardrails, clear warning signage, and edge protection (Correct answer)
Cones placed along the edge

Correct answer: Substantial barriers or guardrails, clear warning signage, and edge protection

Open excavations must be protected by substantial barriers (not tape alone) to prevent persons and vehicles from falling in. Guardrails should meet the same standards as for work at height (950mm top rail, toe board, intermediate rail). Clear warning signs, lighting for night-time, and vehicle stop blocks should also be provided.

Question 49: What does the term 'biological monitoring' mean in the context of occupational health on construction sites?

Monitoring for insects and rodents on site
Measuring the concentration of a substance or its metabolite in a worker's blood, urine, or breath to assess actual body uptake (Correct answer)
Checking the biological safety of drinking water
Counting the number of sick days taken by workers

Correct answer: Measuring the concentration of a substance or its metabolite in a worker's blood, urine, or breath to assess actual body uptake

Biological monitoring measures how much of a hazardous substance has actually been absorbed by the body, regardless of the route of exposure. For example, blood lead levels for lead exposure, urine chromium for hexavalent chromium exposure, or urinary metabolites for isocyanate exposure. This complements air monitoring and health surveillance.

Question 50: What is the primary purpose of a fire door on a construction site or building?

To reduce noise between areas
To reduce heat loss from the building
To improve site security by controlling access
To resist the passage of fire and smoke between compartments, maintaining means of escape (Correct answer)

Correct answer: To resist the passage of fire and smoke between compartments, maintaining means of escape

Fire doors are specifically designed to resist the passage of fire and smoke between fire compartments for a specified period (e.g., FD30 for 30 minutes, FD60 for 60 minutes). They maintain the integrity of escape routes and limit fire spread.

NEBOSH Health and Safety Management for Construction (UK)

The NEBOSH Construction Certificate (CN1) assesses health and safety knowledge for the construction industry, covering CDM regulations, site hazards, risk management, and hazard control across 13 syllabus elements. It is an open-book, scenario-based assessment requiring candidates to apply their knowledge to realistic construction workplace situations.

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60 min

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45%

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