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Shotcrete Grouting and Concrete Repair Risk Assessment

Shotcrete Grouting and Concrete Repair Risk Assessment

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Shotcrete Grouting and Concrete Repair Risk Assessment

Product Overview

Identify and control organisational risks associated with Shotcrete Grouting and Concrete Repair at a management and systems level, ensuring robust planning, governance and operational control across your business. This Risk Assessment supports WHS Risk Management, due diligence under the WHS Act and the protection of your organisation from avoidable operational liability.

Risk Categories & Hazards Covered

This document assesses risks and outlines management controls for:

  • WHS Governance, Roles and Responsibilities: Establishment of clear safety leadership, accountability structures, consultation arrangements and delegated authorities for shotcrete and concrete repair activities.
  • WHS Planning, Risk Management and Design Integration: Systematic identification, assessment and control of risks through project planning, design reviews, constructability assessments and change management processes.
  • Contractor, Supplier and Subcontractor Management: Pre-qualification, competency verification, scope definition and performance monitoring for external providers involved in shotcrete grouting and repair works.
  • Competency, Training and Licensing: Requirements for verification of competency, high-risk work licences, task-specific training and ongoing skills development for operators, supervisors and engineers.
  • Plant, Equipment and Maintenance Systems: Selection, inspection, servicing and defect management for pumps, mixers, compressors, scaffolds, access equipment and associated plant used in shotcrete and concrete repair.
  • Materials, Chemical Safety and Dust Management: Safe specification, storage and handling of cements, additives, grouts and repair compounds, including SDS management, respiratory protection and dust suppression strategies.
  • Structural Stability, Temporary Works and Access Systems: Engineering controls, temporary works design, shoring, formwork, scaffolding and access systems to maintain structural integrity during repair and grouting operations.
  • Work Environment, Ventilation and Confined Spaces: Management of enclosed or underground environments, ventilation performance, atmospheric testing, confined space entry procedures and permit-to-work systems.
  • Pressure Systems, Injection Processes and Energy Isolation: Controls for high-pressure lines, hoses and injection systems, including isolation, lock-out/tag-out, pressure relief, hose management and failure contingencies.
  • Exposure to Noise, Vibration and Ergonomic Strain: Assessment of plant-generated noise and vibration, manual handling of hoses and materials, and design of work methods to minimise musculoskeletal injury.
  • Site Coordination, Traffic Control and Public Interface: Site layout planning, separation of people and plant, interaction with other trades, and protection of the public in operational environments.
  • Emergency Preparedness, Incident Response and First Aid: Development of emergency plans, rescue arrangements, spill response, first aid provisions and communication protocols specific to shotcrete and grouting works.
  • Documentation, Records and Compliance Assurance: Systems for maintaining risk assessments, permits, inspection records, training evidence and audit trails to demonstrate organisational compliance.
  • Health Monitoring, Fitness for Work and Fatigue Management: Procedures for health surveillance, substance impairment controls, roster design and fatigue risk management for safety-critical roles.
  • Continuous Improvement and Lessons Learned: Incident investigation, corrective actions, performance review and integration of lessons learned into policies, procedures and training programs.

Who is this for?

This Risk Assessment is designed for Business Owners, Construction Managers, Project Engineers and Safety Managers responsible for planning, approving and overseeing Shotcrete Grouting and Concrete Repair operations across their organisation or projects.

Hazards & Risks Covered

Hazard Risk Description
1. WHS Governance, Roles and Responsibilities
  • • Unclear allocation of WHS duties under WHS Act 2011 for PCBUs, officers and workers involved in shotcrete and grouting works
  • • Lack of documented WHS objectives and due diligence processes for concrete repair activities
  • • Inadequate consultation, cooperation and coordination between principal contractor, subcontractors and suppliers
  • • Failure to integrate WHS obligations into commercial contracts and scopes of work
  • • Inconsistent enforcement of site rules and safe systems of work for shotcreting operations
2. WHS Planning, Risk Management and Design Integration
  • • Shotcrete and grouting methods selected without early WHS input at design stage
  • • Failure to identify high-risk construction work associated with shotcreting operations (e.g. work at height, confined spaces, structural collapse)
  • • Inadequate risk assessments for application of sprayed concrete, expansive grouting and injection grouting under varying environmental and structural conditions
  • • Poor change management when repair methods, products or construction sequences are altered
  • • Lack of consideration of access, egress and emergency rescue in design of concrete repair methodology
3. Contractor, Supplier and Subcontractor Management
  • • Engagement of shotcrete and grouting contractors without verifying competence or licence requirements
  • • Inadequate review of subcontractor WHS management systems, SWMS and insurances
  • • Poor control of specialist suppliers delivering shotcrete, admixtures and grouting materials to site
  • • Lack of clarity on who controls work areas and exclusion zones during multi-contractor operations
  • • Subcontractor cost pressures leading to shortcuts in safety systems and maintenance
4. Competency, Training and Licensing
  • • Shotcrete nozzle operators and grouting technicians performing work without formal training or verified competency
  • • Supervisors lacking specific knowledge of sprayed concrete behaviour, rebound management and structural repair techniques
  • • Inadequate training in safe use of pumps, compressors, mixers and pressure systems for injection and expansive grouting
  • • Poor understanding of chemical hazards, SDS requirements and correct PPE for cementitious and resin-based systems
  • • Lack of refresher training leading to skill fade and unsafe practices becoming normalised
5. Plant, Equipment and Maintenance Systems
  • • Failure of shotcrete pumps, hoses or nozzles leading to hose whip, bursts or uncontrolled discharge
  • • Inadequate inspection and maintenance of air compressors, mixers, agitator trucks and vibrating tools
  • • Use of incompatible or damaged hoses, couplings and clamps for high-pressure grout injection systems
  • • Lack of guarding and emergency stops on mechanical chipping and demolition equipment used for surface preparation
  • • Unplanned plant movements of loaders, telehandlers, MEWPs and delivery trucks in congested work areas
6. Materials, Chemical Safety and Dust Management
  • • Uncontrolled exposure to respirable crystalline silica from dry shotcrete, concrete chipping and surface preparation
  • • Skin and eye irritation or burns from cementitious products, additives and expansive grouts
  • • Use of resin, epoxy or chemical grout systems without appropriate ventilation and health controls
  • • Incorrect storage, labelling or segregation of hazardous substances leading to spills or unintended reactions
  • • Lack of control over dust, overspray and rebound affecting adjacent workers, public areas or sensitive equipment
7. Structural Stability, Temporary Works and Access Systems
  • • Application of shotcrete or expansive grout on weakened or partially demolished structures without engineering verification of stability
  • • Failure of temporary works, formwork, mesh or support systems during sprayed concrete application
  • • Inadequate design and inspection of scaffolding, working platforms and access systems around repair areas
  • • Overloading of slabs, decks or existing structures with heavy plant, materials and wet concrete
  • • Inadequate anchorage of fall prevention and restraint systems for workers conducting repairs at height or over edges
8. Work Environment, Ventilation and Confined Spaces
  • • Shotcreting and injection grouting carried out in tunnels, shafts, basements or tanks with inadequate ventilation
  • • Accumulation of dust, fumes and exhaust gases from plant and curing processes in poorly ventilated areas
  • • Undertaking grouting and repair work in confined spaces without proper entry permits and emergency plans
  • • Limited visibility, poor lighting and restricted access routes in complex concrete repair environments
  • • Heat stress or cold stress affecting workers applying shotcrete in extreme temperatures or enclosed areas
9. Pressure Systems, Injection Processes and Energy Isolation
  • • Sudden release of high-pressure grout or air causing hose whip, injection injury or structural damage
  • • Blockages in lines leading to over-pressurisation and catastrophic hose or fitting failure
  • • Uncontrolled injection of expansive grouts causing cracking, lifting or damage to structures and services
  • • Inadequate lock-out tag-out procedures during maintenance, cleaning or clearing of blocked pumps and lines
  • • Workers exposed to stored energy in hoses, accumulators, hydraulic systems or pressurised tanks
10. Exposure to Noise, Vibration and Ergonomic Strain
  • • Chronic noise exposure from compressors, pumps, chipping hammers and spraying operations
  • • Hand–arm vibration from prolonged use of chipping tools, breakers and vibrating equipment
  • • Musculoskeletal strain from manual handling of hoses, bags of product, mesh, and awkward postures during overhead or vertical repairs
  • • Fatigue arising from long shifts, repetitive tasks and physically demanding work in challenging environments
  • • Insufficient rotation of tasks leading to cumulative overuse injuries for specialist operators
11. Site Coordination, Traffic Control and Public Interface
  • • Interaction between shotcrete rigs, agitator trucks, mobile plant and pedestrians in confined site access points
  • • Pump lines, hoses and rebound encroaching into live traffic lanes or public walkways
  • • Inadequate separation between concrete repair work zones and adjacent trades creating struck-by or overspray risks
  • • Deliveries of materials, cylinders and chemicals occurring without traffic management in place
  • • Shotcreting and chipping activities generating noise, dust or debris impacting neighbours or the public
12. Emergency Preparedness, Incident Response and First Aid
  • • Lack of specific emergency procedures for shotcrete and grouting incidents such as hose bursts, structural instability or chemical exposure
  • • Insufficient first aid capability for eye injuries, skin contact with cementitious or chemical products and injection injuries
  • • Ineffective communication systems in tunnels, basements or remote work fronts during an emergency
  • • Delayed rescue of workers operating in elevated, confined or hard-to-access locations
  • • Inadequate incident reporting, investigation and corrective actions following near misses or injuries
13. Documentation, Records and Compliance Assurance
  • • Incomplete or outdated SWMS, risk assessments and procedures for concrete repair systems
  • • Failure to maintain inspection, maintenance and training records required under WHS legislation and Australian Standards
  • • Inadequate verification of compliance with design specifications, curing regimes and structural repair requirements
  • • Loss of critical information when personnel change or multiple contractors share documentation informally
  • • Inability to demonstrate due diligence in the event of regulatory scrutiny or serious incident
14. Health Monitoring, Fitness for Work and Fatigue Management
  • • Workers exposed to respirable crystalline silica, cement additives or resins without appropriate health monitoring where required
  • • Employees undertaking demanding shotcrete and chipping work while medically unfit or impaired by drugs, alcohol or fatigue
  • • Extended shifts, night works and tight program pressures contributing to reduced alertness and poor decision-making
  • • Inconsistent application of fitness for work and drug and alcohol policies across contractors
  • • Under-reporting of early health symptoms due to cultural or job security concerns
15. Continuous Improvement and Lessons Learned
  • • Repeat incidents or near misses due to lack of organisational learning from previous shotcrete and grouting projects
  • • Failure to keep up with changes in legislation, Australian Standards and industry best practice for sprayed concrete and structural repairs
  • • No mechanism to capture workers’ feedback on practicality and effectiveness of current controls
  • • Reliance on informal knowledge transfer between projects leading to inconsistent WHS performance
  • • Inadequate review of design, methodology and WHS controls at the completion of major repair works

Need to add specific hazards for your workplace?

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Legislation & References

This document was researched and developed to align with:

  • Work Health and Safety Act 2011
  • Work Health and Safety Regulations 2017
  • AS/NZS ISO 31000:2018: Risk management — Guidelines
  • Safe Work Australia – How to Manage Work Health and Safety Risks Code of Practice: Guidance on risk management principles and hierarchy of control.
  • Safe Work Australia – Managing Risks of Plant in the Workplace Code of Practice: Requirements for plant selection, inspection, maintenance and isolation.
  • Safe Work Australia – Managing the Work Environment and Facilities Code of Practice: Ventilation, lighting, amenities and environmental conditions for safe work.
  • Safe Work Australia – Confined Spaces Code of Practice: Risk management, permits, monitoring and rescue arrangements for confined space work.
  • Safe Work Australia – Hazardous Chemicals (Labelling, SDS and Risk Management) Codes of Practice: Classification, labelling, storage and handling of cementitious and chemical products.
  • Safe Work Australia – Managing Noise and Preventing Hearing Loss at Work Code of Practice: Control measures for plant and process-generated noise.
  • AS/NZS 4801 / ISO 45001: Occupational health and safety management systems — Requirements for systematic WHS governance and continual improvement.
  • AS 2550 series: Cranes, hoists and winches — Safe use, where lifting and access equipment is used in concrete repair works.
  • AS 1576 & AS/NZS 4576: Scaffolding — Design, selection and safe use of temporary access structures.
  • AS 1319: Safety signs for the occupational environment — Requirements for safety signage on construction and repair sites.
Standard Risk Assessment Features (Click to Expand)
  • Comprehensive hazard identification for all activities
  • Risk rating matrix with likelihood and consequence analysis
  • Existing control measures evaluation
  • Residual risk assessment after controls
  • Hierarchy of controls recommendations
  • Action priority rankings
  • Review and monitoring requirements
  • Consultation and communication records
  • Legal compliance references
  • Sign-off and approval sections

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Safe Work Australia Aligned