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ISPON Professional Membership practice questions

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Question 1Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

Under Nigeria's Factories Act, which body is legally responsible for enforcing occupational safety provisions in registered factories?

  1. The Federal Ministry of Labour and Employment inspectorate Correct answer.
  2. The Standards Organisation of Nigeria
  3. The Nigerian Upstream Petroleum Regulatory Commission
  4. The National Environmental Standards and Regulations Enforcement Agency

Explanation

The Factories Act assigns inspection and enforcement of factory safety provisions to the factory inspectorate within the labour ministry. Other agencies hold distinct mandates such as product standards, petroleum operations, or environmental regulation.

Question 2Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

Which Nigerian statute consolidated the repealed Factories Act and introduced a general duty of care on employers across all workplaces?

  1. Occupational Safety and Health Act 2012 Correct answer.
  2. Employees' Compensation Act 2010
  3. Labour Act 2004
  4. Pension Reform Act 2014

Explanation

The Occupational Safety and Health Act 2012 repealed the Factories Act and imposes a broad general duty on employers to ensure the safety, health and welfare of workers. It is the principal framework legislation for workplace safety in Nigeria.

Question 3Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

A worker is injured by a machine with a missing guard. Which principle most directly obliges the employer to have fitted the guard before the incident?

  1. The hierarchy of controls
  2. The precautionary principle
  3. The polluter pays principle
  4. The general duty of care Correct answer.

Explanation

The general duty of care requires an employer to take reasonable steps to protect workers from foreseeable harm, including guarding machinery. Hierarchy of controls is a risk-reduction framework rather than a legal duty basis.

Question 4Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

In the hierarchy of controls, which measure is considered the most effective and preferred first line of protection?

  1. Elimination of the hazard Correct answer.
  2. Administrative controls
  3. Personal protective equipment
  4. Warning signage

Explanation

Elimination removes the hazard entirely and sits at the top of the hierarchy of controls, making it the most reliable protection. Lower-ranked measures depend on human behaviour or add-on barriers.

Question 5Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

Under international labour standards, which ILO convention is the foundational instrument on occupational safety and health with a promotional framework?

  1. C138 Minimum Age Convention
  2. C102 Social Security Convention
  3. C155 Occupational Safety and Health Convention Correct answer.
  4. C131 Minimum Wage Fixing Convention

Explanation

ILO Convention C155 establishes a national policy and framework for occupational safety and health, making it the core promotional instrument. The other conventions address age, social security, and wages respectively.

Question 6Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

A Nigerian employer must report a fatal workplace accident to the regulator. Which requirement best reflects statutory reporting obligations?

  1. Reporting in the annual financial statement
  2. Reporting only when the police investigate
  3. Immediate notification followed by a written report within the prescribed period Correct answer.
  4. Reporting only if the family requests it

Explanation

Safety legislation typically requires prompt notification of serious or fatal accidents followed by a written report within a set period. This enables investigation and prevention of recurrence.

Question 7Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

Which document must an employer prepare before allowing work that involves significant foreseeable risk, according to risk assessment principles?

  1. A risk assessment record identifying hazards and controls Correct answer.
  2. A purchase order for PPE
  3. A staff attendance register
  4. A payroll schedule

Explanation

A risk assessment identifies hazards, evaluates risk, and defines controls before work commences. It is the documented basis for deciding protective measures and monitoring their effectiveness.

Question 8Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

Which pair of concepts is central to the 'safe system of work' approach required of employers?

  1. Profit margin and market share
  2. Recruitment and promotion
  3. Advertising and branding
  4. Risk assessment and written procedures Correct answer.

Explanation

A safe system of work combines systematic risk assessment with documented procedures and competent supervision. These elements ensure hazards are identified and controlled consistently.

Question 9Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

Under the Employees' Compensation Act 2010, what is the primary purpose of the scheme in Nigeria?

  1. To set minimum wages
  2. To fund employee pension contributions
  3. To provide compensation and rehabilitation for work-related injuries and diseases Correct answer.
  4. To regulate factory building permits

Explanation

The Employees' Compensation Act establishes a scheme providing compensation and rehabilitation for employees who suffer work-related injury, disability, or death. It replaces the earlier employer-liability approach with a contributory fund.

Question 10Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

What does the term 'reasonably practicable' mean when applied to an employer's safety duty?

  1. The employer must eliminate every conceivable risk regardless of cost
  2. The employer need only act after an injury occurs
  3. The employer may ignore risk if production targets are high
  4. The employer must weigh risk against the cost and effort of control measures Correct answer.

Explanation

'Reasonably practicable' requires balancing the magnitude of risk against the time, cost, and effort needed to control it. It does not demand the impossible but does require proportionate action.

Question 11Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

Which international standard provides requirements for an occupational health and safety management system?

  1. ISO 45001 Correct answer.
  2. ISO 9001
  3. ISO 50001
  4. ISO 14001

Explanation

ISO 45001 specifies requirements for an occupational health and safety management system, aiming to prevent work-related injury and ill health. The other standards address quality, environment, and energy management.

Question 12Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

In ISO 45001, which element represents the foundation for identifying hazards and evaluating risks within the management system?

  1. Document control
  2. Hazard identification and assessment of risks and opportunities Correct answer.
  3. Management review
  4. Procurement

Explanation

ISO 45001 requires processes for hazard identification and assessment of risks and opportunities as the basis for planning controls. This feeds into setting objectives and operational controls.

Question 13Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

Which statutory duty typically requires employers to consult workers on health and safety matters?

  1. Duty to outsource all safety functions
  2. Duty to consult workers and their representatives on OSH arrangements Correct answer.
  3. Duty to advertise vacancies externally
  4. Duty to maximise shareholder returns

Explanation

OSH legislation commonly imposes a duty to consult workers and safety representatives on arrangements affecting their health and safety. Consultation improves hazard identification and control ownership.

Question 14Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

Which of the following best describes the role of a safety committee in a workplace?

  1. To manage payroll deductions
  2. To provide a forum for joint review of safety performance and concerns Correct answer.
  3. To replace the employer's legal duties
  4. To impose fines on workers who breach rules

Explanation

A safety committee brings management and worker representatives together to review safety performance, discuss concerns, and recommend improvements. It supports rather than replaces the employer's legal obligations.

Question 15Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

An inspector issues a prohibition notice on a machine. What is the immediate legal effect?

  1. The machine must not be used until the specified danger is remedied Correct answer.
  2. The machine may continue operating with additional signage
  3. The machine is permanently confiscated
  4. The employer must sell the machine within 30 days

Explanation

A prohibition notice stops an activity or use of equipment that presents a risk of serious personal injury until the danger is addressed. It is a preventive enforcement tool rather than permanent confiscation.

Question 16Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

Which type of notice is typically used when a work activity involves a risk of serious personal injury and must cease immediately?

  1. Improvement notice
  2. Abatement order
  3. Prohibition notice Correct answer.
  4. Warning letter

Explanation

A prohibition notice halts activities posing a risk of serious personal injury, often with immediate effect. Improvement notices instead require remedial action within a stated period.

Question 17Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

Which principle governs the employer's duty when a new hazard emerges after a risk assessment has been completed?

  1. The hazard is ignored until an accident occurs
  2. The hazard is recorded only in the financial ledger
  3. The assessment must be reviewed and updated when circumstances change Correct answer.
  4. The assessment remains valid until the annual review date

Explanation

Risk assessments are living documents that must be reviewed and updated when new hazards, processes, or changes in circumstances arise. Relying on a fixed annual cycle can leave significant risks uncontrolled.

Question 18Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

What is the main purpose of a permit-to-work system for high-risk tasks?

  1. To serve as a payroll record
  2. To replace competent supervision
  3. To document authorisation and control of specific hazardous work Correct answer.
  4. To record annual leave requests

Explanation

A permit-to-work system formally authorises specific high-risk tasks, documents precautions, and controls the conditions under which work proceeds. It supplements but does not replace supervision and competence.

Question 19Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

Which of the following is a recognised employer duty regarding hazardous substances in the workplace?

  1. Allowing unlimited exposure if workers consent
  2. Removing ventilation to reduce energy costs
  3. Providing safety data sheets and controlling exposure Correct answer.
  4. Storing substances in unlabelled containers

Explanation

Employers must obtain safety data sheets, label containers, and control exposure through substitution, engineering controls, and safe procedures. Consent does not remove the duty to control exposure.

Question 20Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

Which document communicates the hazards, safe handling, and emergency measures for a chemical product?

  1. A job description
  2. A performance appraisal
  3. A safety data sheet Correct answer.
  4. A purchase invoice

Explanation

A safety data sheet provides hazard information, safe handling precautions, and emergency measures for a chemical. It supports risk assessment and safe use decisions.

Question 21Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

Which international standard addresses the classification and labelling of chemicals through the Globally Harmonized System?

  1. ILO C155
  2. ISO 14001
  3. ISO 45001
  4. GHS (Globally Harmonized System of Classification and Labelling of Chemicals) Correct answer.

Explanation

GHS provides harmonised criteria for classifying chemical hazards and for labelling and safety data sheets. It is implemented through national regulations and supports consistent hazard communication.

Question 22Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

An employer introduces a night shift for the first time. Which OSH obligation is most directly engaged?

  1. Reducing the number of safety inspections
  2. Cancelling all first-aid arrangements
  3. Increasing advertising spend
  4. Reassessing risks related to fatigue, lighting, and lone working Correct answer.

Explanation

Introducing night work changes fatigue exposure, lighting needs, supervision, and lone-working risk, so the risk assessment must be updated and controls adjusted. OSH duties apply equally to non-standard shift patterns.

Question 23Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

Which approach best reflects the principle of worker participation in OSH management under international standards?

  1. Workers are excluded from safety planning
  2. Workers are consulted and involved in hazard identification and control Correct answer.
  3. Workers are informed of decisions after implementation
  4. Workers are disciplined for raising concerns

Explanation

International OSH frameworks emphasise consultation and participation of workers in identifying hazards and developing controls. Participation improves the relevance and effectiveness of safety measures.

Question 24Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

A company operates in Nigeria and follows both national law and ISO 45001. How should the two requirements be applied where they differ?

  1. Meet the legal minimum and adopt the stricter standard where it adds protection Correct answer.
  2. Apply only national law and ignore the standard
  3. Choose whichever is cheaper each year
  4. Apply only the voluntary standard

Explanation

Legal requirements set the mandatory baseline, while voluntary standards may impose additional expectations. Where a standard is stricter, adopting it strengthens protection and is compatible with legal compliance.

Question 25Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

Which statement best describes the relationship between risk assessment and the selection of personal protective equipment?

  1. PPE is selected as a last resort after higher-order controls are considered Correct answer.
  2. PPE selection is unrelated to identified hazards
  3. PPE replaces the need for engineering controls
  4. PPE is selected first and risk assessment follows

Explanation

Risk assessment determines which hazards remain after elimination, substitution, and engineering and administrative controls, and PPE is then selected for residual risk. This reflects its position as the last line of defence.

Question 26Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

Under Nigeria's Factories Act, which body is empowered to appoint factory inspectors who may enter registered premises to examine plant and enforce safety provisions?

  1. The Nigerian Social Insurance Trust Fund
  2. The Standards Organisation of Nigeria
  3. The Federal Ministry responsible for labour and employment Correct answer.
  4. The National Environmental Standards and Regulations Enforcement Agency

Explanation

The Factories Act vests inspection and enforcement of factory safety provisions in inspectors appointed by the federal ministry responsible for labour and employment. NESREA handles environmental regulation, SON handles product standards, and NSITF administers employee compensation, so none of them carries the Factories Act inspection mandate.

Question 27Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

A worker is exposed to noise at a level that is lawful but still uncomfortable. Under the hierarchy of controls used in OSH practice, which action should be considered first?

  1. Rotate staff so exposure time per person falls
  2. Reduce noise at source by engineering modification Correct answer.
  3. Place warning signs at the noisy area
  4. Issue hearing protection and record its use

Explanation

The hierarchy of controls ranks elimination and engineering controls above administrative measures and personal protective equipment. Reducing noise at source removes or lowers the hazard for everyone rather than relying on individual behaviour or equipment. PPE and rotation are lower-order measures used when higher-order controls are not reasonably practicable.

Question 28Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

A Nigerian employer's operations fall within the scope of both the Factories Act and the Employee Compensation Act 2010. How should these obligations be reconciled?

  1. Apply whichever statute the industry association recommends for the sector
  2. Comply with the Factories Act, since compensation duties arise only after a claim is filed
  3. Meet both sets of duties, as they address prevention and compensation respectively Correct answer.
  4. Treat the later statute as impliedly repealing the earlier one

Explanation

The Factories Act and the Employee Compensation Act operate cumulatively: one sets preventive safety and health duties, the other provides compensation and rehabilitation for work-related injury, disease and death. Compliance with one does not discharge the other, and Nigerian courts do not presume that a later statute repeals an earlier one without express words or irreconcilable conflict.

Question 29Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

A contractor is engaged to work inside a host company's plant. Which arrangement best reflects recognised OSH practice for allocating duties between host and contractor?

  1. The host assumes all duties because it owns the premises
  2. Duties are agreed in writing, with the host coordinating site hazards and the contractor managing its own work Correct answer.
  3. The contractor assumes all duties because it controls its own staff
  4. Duties are left to be settled by the regulator after any incident

Explanation

Good practice, reflected in Nigerian regulation and in ILO guidance, requires host and contractor to exchange hazard information and define responsibilities before work begins, often through a formal contract or permit arrangement. The host coordinates site-wide risks it controls, while the contractor manages the work it directs. Neither party can simply transfer away duties it is legally owed.

Question 30Occupational Health and Safety Legislation, Regulation and Standards (Nigeria and international)

A multinational applies an international OSH standard that sets a stricter exposure limit than the Nigerian statutory limit for the same agent. Which approach is legally and professionally sound?

  1. Apply the Nigerian limit, because domestic law always prevails over voluntary standards
  2. Apply whichever limit the workforce votes to accept
  3. Apply the stricter limit, since compliance with law is a floor and higher standards may be adopted voluntarily Correct answer.
  4. Apply the Nigerian limit and record the stricter standard as an aspiration without implementing it

Explanation

Statutory limits set the minimum legally enforceable duty, and nothing prevents an employer from adopting a more protective internal standard. Where a voluntary standard is stricter, applying it satisfies the law and reflects the preventive principle of continuous improvement. Accepting a lower internal standard than the law is unlawful, but exceeding the law is permissible.

Question 31Hazard Identification, Risk Assessment and Risk Management

Under a recognised occupational health and safety management system approach, what is the correct sequence of steps in the risk management process?

  1. Monitor and review, assess risk, control risk, identify hazards
  2. Assess risk, identify hazards, monitor and review, control risk
  3. Identify hazards, assess risk, control risk, monitor and review Correct answer.
  4. Control risk, identify hazards, assess risk, monitor and review

Explanation

Risk management begins with hazard identification because a hazard must be recognised before its risk can be estimated. Risk assessment then informs the selection of controls, and monitoring and review closes the loop by verifying that controls remain effective and that new hazards are detected.

Question 32Hazard Identification, Risk Assessment and Risk Management

In risk assessment terminology, which statement best distinguishes a hazard from a risk?

  1. A hazard is always a physical object; a risk is always a behavioural factor
  2. A hazard is the likelihood of harm; a risk is the severity of that harm
  3. A hazard exists only after an incident; a risk exists only before an incident
  4. A hazard is a source of potential harm; a risk is the combination of likelihood and consequence of that harm Correct answer.

Explanation

A hazard is any source, situation or act with potential to cause harm, such as a rotating shaft or a toxic vapour. Risk expresses how likely and how severe the harm would be for a given exposure, so the same hazard can carry different risks in different settings.

Question 33Hazard Identification, Risk Assessment and Risk Management

A five-by-five risk matrix uses likelihood and consequence scales. Which residual risk rating typically requires action as the highest priority?

  1. A rating in the low band, recorded only for audit purposes
  2. A rating in the low band, accepted with no further action
  3. A rating in the medium band, addressed through planned improvement
  4. A rating in the high or extreme band, requiring urgent interim controls Correct answer.

Explanation

High or extreme ratings sit in the intolerable region of the matrix and demand urgent action, often interim controls while permanent solutions are engineered. Medium ratings are managed through planned programmes, and low ratings are typically monitored and accepted.

Question 34Hazard Identification, Risk Assessment and Risk Management

Which of the following is the most reliable example of a proactive hazard identification method?

  1. Analysing compensation claims statistics
  2. Conducting routine workplace inspections and task observations Correct answer.
  3. Investigating a near miss after it has been reported
  4. Reviewing incident reports from the previous quarter

Explanation

Proactive methods seek hazards before harm occurs; inspections and structured task observations fall into this category. Incident reviews, claims analysis and near-miss investigations are reactive because they depend on something having already gone wrong.

Question 35Hazard Identification, Risk Assessment and Risk Management

In the hierarchy of control, which option ranks the control types from most to least effective?

  1. Engineering controls, elimination, PPE, administrative controls
  2. Administrative controls, elimination, engineering controls, PPE
  3. PPE, administrative controls, engineering controls, elimination
  4. Elimination, engineering controls, administrative controls, PPE Correct answer.

Explanation

The hierarchy places elimination of the hazard first, followed by substitution and engineering controls that act on the hazard or the person-hazard interface. Administrative controls and personal protective equipment depend heavily on human behaviour and are therefore the least reliable.

Question 36Hazard Identification, Risk Assessment and Risk Management

A worker is exposed to solvent vapour during a degreasing task. Which control sits highest in the hierarchy of control for this exposure?

  1. Substituting the solvent with a water-based cleaning agent Correct answer.
  2. Issuing respirators and training workers in their use
  3. Rotating workers so exposure time per person is reduced
  4. Posting warning signs at the degreasing station

Explanation

Substitution removes or reduces the hazard at source and ranks above controls that merely manage exposure. Respiratory protection, rotation and signage all rely on administrative arrangements or PPE and are lower-order measures.

Question 37Hazard Identification, Risk Assessment and Risk Management

What is the primary purpose of a formal risk assessment record?

  1. To satisfy insurers without influencing how work is actually done
  2. To provide evidence that hazards were identified, risks evaluated and controls decided Correct answer.
  3. To transfer legal liability for injury from the employer to the worker
  4. To replace the need for workplace monitoring once it is signed

Explanation

The record documents the reasoning behind control decisions and provides an auditable basis for review when conditions change. It supports accountability and continuous improvement rather than shifting liability or substituting for ongoing monitoring.

Question 38Hazard Identification, Risk Assessment and Risk Management

Which factor most directly increases the likelihood component of a risk rating for a manual handling task?

  1. The colour of the lifting equipment
  2. The frequency and duration of the lifting performed Correct answer.
  3. The number of pages in the risk assessment
  4. The seniority of the supervisor on shift

Explanation

Likelihood rises with how often and how long a person is exposed to the hazardous activity, because repeated exposure increases the chance of an adverse event. Frequency and duration are core exposure determinants in manual handling assessment.

Question 39Hazard Identification, Risk Assessment and Risk Management

A team is assessing a task where workers handle a corrosive chemical. Which combination of factors should the risk assessment consider when estimating consequence?

  1. The cost of the chemical and the supplier's delivery schedule
  2. The chemical's hazard classification and the quantity and route of exposure Correct answer.
  3. The number of staff trained and the date of the last audit
  4. The colour of the container and the font on the label

Explanation

Consequence depends on the intrinsic harm the agent can cause and on how much reaches the body and by which route. Hazard classification, quantity and exposure route therefore drive severity estimation, whereas administrative or commercial details do not.

Question 40Hazard Identification, Risk Assessment and Risk Management

A risk assessment identifies that a machine guard has been removed. Under the hierarchy of control, how should this be treated?

  1. As acceptable if workers are experienced and have been warned
  2. As a matter for PPE alone until the next scheduled maintenance
  3. As an administrative issue to be raised at the next safety meeting
  4. As an engineering control failure requiring immediate restoration of the guard Correct answer.

Explanation

A machine guard is an engineering control that physically separates the person from the hazard, so its removal raises risk sharply and demands immediate restoration. Relying on meetings, warnings or PPE would substitute weaker controls for a higher-order one.

Question 41Hazard Identification, Risk Assessment and Risk Management

Which statement correctly describes residual risk?

  1. The risk that is impossible to measure in any circumstance
  2. The risk that existed before any controls were considered
  3. The risk that remains after controls have been implemented Correct answer.
  4. The risk created only by contractors on site

Explanation

Residual risk is what remains once the chosen controls are in place, and it must be compared against the acceptability criteria set by the organisation. Initial or inherent risk is the pre-control figure against which the effectiveness of controls is judged.

Question 42Hazard Identification, Risk Assessment and Risk Management

During a task-based risk assessment, a worker says the task is 'always done this way and nothing has happened'. How should the assessor respond?

  1. Treat the absence of reported incidents as evidence that risk is negligible
  2. Accept the practice because the absence of incidents proves it is safe
  3. Close the assessment because anecdotal experience outweighs formal evaluation
  4. Recognise that absence of harm is not proof of safety and assess exposure and potential consequence Correct answer.

Explanation

A clean incident history may reflect under-reporting, low exposure frequency or plain luck rather than genuine safety. Sound assessment examines the hazard, exposure and credible worst outcome instead of inferring safety from the absence of recorded events.

Question 43Hazard Identification, Risk Assessment and Risk Management

Which of the following best illustrates a dynamic risk assessment?

  1. A worker reassessing conditions and adjusting controls immediately before starting a task Correct answer.
  2. A documented annual review of the organisation's risk register
  3. A post-incident root cause analysis report
  4. A consultant's baseline study completed before operations begin

Explanation

Dynamic risk assessment happens in the moment, where the worker evaluates current conditions and adapts controls before proceeding. Annual reviews, baseline studies and post-incident analyses are planned or retrospective activities rather than real-time judgements.

Question 44Hazard Identification, Risk Assessment and Risk Management

An organisation uses a risk matrix but two assessors rate the same task differently. Which action most improves consistency?

  1. Remove the matrix and rely on professional judgement alone
  2. Allow each assessor to keep their own rating to preserve independence
  3. Average the two ratings without examining the reasoning behind them
  4. Define written descriptors for each likelihood and consequence level and calibrate assessors against them Correct answer.

Explanation

Inconsistent ratings usually stem from vague scale definitions rather than genuine disagreement about the hazard. Written descriptors for each level, supported by calibration exercises, give assessors a shared reference and improve inter-rater reliability.

Question 45Hazard Identification, Risk Assessment and Risk Management

Which of the following is the most appropriate treatment when a risk cannot be reduced to an acceptable level with available technology?

  1. Record the risk and continue operating without change
  2. Ignore the risk because no further controls exist
  3. Apply interim controls, restrict exposure and plan further risk reduction Correct answer.
  4. Reclassify the risk as low to reflect the lack of solutions

Explanation

Where risk cannot yet be reduced to the acceptance criterion, interim measures such as restricted access, reduced exposure time or additional PPE should be applied while further reduction is pursued. Simply recording or reclassifying the risk does not discharge the duty to control it.

Question 46Hazard Identification, Risk Assessment and Risk Management

A near miss involving a falling object is reported. Which action best reflects a learning-oriented risk management approach?

  1. Investigate the contributing factors and review controls for similar tasks Correct answer.
  2. Discipline the worker who reported the near miss
  3. Wait for a serious incident before changing procedures
  4. File the report without further action because no injury occurred

Explanation

Near misses are free lessons that reveal control weaknesses before harm occurs, so investigating contributing factors and reviewing similar tasks prevents escalation. Punitive responses suppress reporting, and inaction forfeits the preventive opportunity.

Question 47Hazard Identification, Risk Assessment and Risk Management

Which statement about consultation with workers during risk assessment is most accurate?

  1. Consultation should be limited to managers to preserve objectivity
  2. Consultation replaces the need for competent assessment expertise
  3. Consultation is optional and adds little value to technical assessments
  4. Consultation improves hazard identification because workers know task variability and informal practices Correct answer.

Explanation

Workers hold detailed knowledge of how tasks are actually performed, including shortcuts and variability that formal procedures may miss. Consultation therefore strengthens hazard identification, but it complements rather than replaces competent assessment expertise.

Question 48Hazard Identification, Risk Assessment and Risk Management

A risk assessment is being prepared for a new process. Which approach best demonstrates the 'competent person' principle?

  1. Assign the assessment to whoever is available on the day
  2. Rely on generic templates without visiting the workplace
  3. Assign it to someone with relevant technical knowledge, training and access to specialist advice Correct answer.
  4. Delegate it entirely to the equipment supplier without internal review

Explanation

A competent assessor combines relevant knowledge, training and experience, and knows when to seek specialist input. Availability, supplier handover alone or desk-based templates do not ensure the assessor understands the actual work and its hazards.

Question 49Hazard Identification, Risk Assessment and Risk Management

A chemical risk assessment covers a substance with a workplace exposure limit. Which control strategy is most consistent with the hierarchy of control?

  1. Reduce exposure only by shortening shifts
  2. Issue PPE as the primary control and monitor only when symptoms appear
  3. Rely on natural ventilation and worker awareness
  4. Enclose or extract the process to control emissions at source, using PPE as a last line of defence Correct answer.

Explanation

Enclosure or local exhaust ventilation controls emissions at source and ranks above administrative measures and PPE. PPE is a last line of defence because its effectiveness depends on fit, maintenance and correct use.

Question 50Hazard Identification, Risk Assessment and Risk Management

Which set of factors is most relevant when assessing the risk of a musculoskeletal disorder in a repetitive assembly task?

  1. Chemical volatility, flash point and vapour density
  2. Noise frequency, illumination colour and air ionisation
  3. Container labelling, storage segregation and spill kits
  4. Repetition, force, posture, recovery time and vibration Correct answer.

Explanation

Musculoskeletal risk is driven by biomechanical and organisational exposure factors such as repetition, force, awkward posture, insufficient recovery and vibration. The other sets describe chemical, physical or storage hazards unrelated to musculoskeletal loading.