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Decision: Vehicle/Plant QR Code Integration ​

Quick Summary ​

Should Vehicle, Mobile Plant, and Hi-Rail Vehicle qualifications be included in QR codes or handled solely through manual plant lock-on processes?

Context ​

The system handles different types of lock-on scenarios, with varying complexity and safety requirements across individual workers and vehicle/plant operations.

Current State:

  • Individual workers can have QR codes for rapid lock-on
  • Manual plant lock-on process exists for vehicle/plant operations
  • Vehicle (V), Mobile Plant (MP), and Hi-Rail Vehicle (HRV) qualifications exist
  • No current integration between QR codes and vehicle/plant qualifications
  • Separate workflows for individual worker vs plant lock-on

Business Context:

  • Workers often possess both individual competencies and vehicle/plant qualifications
  • Plant operations have additional safety considerations beyond individual competency
  • Manual plant lock-on provides oversight and verification for high-risk activities
  • Operational efficiency important for multi-qualified personnel
  • Data entry overhead for qualified operators can be significant

Technical Context:

  • QR codes have payload size limitations
  • Manual plant lock-on requires form completion and verification
  • Integration between QR system and manual processes needs design
  • Different verification workflows appropriate for different entity types

Decision Required ​

How should vehicle/plant qualifications be handled in relation to QR codes and manual plant lock-on processes?

Success Criteria ​

What does a good decision look like?

  • [ ] Reduces data entry overhead for multi-qualified personnel
  • [ ] Maintains appropriate safety oversight for plant operations
  • [ ] Provides complete qualification picture for supervisors/protectors
  • [ ] Supports efficient lock-on for qualified operators
  • [ ] Preserves manual verification for plant-specific safety checks
  • [ ] Creates clear, understandable workflow for field operations
  • [ ] Balances efficiency with safety oversight requirements

Options ​

Option 1: Include Vehicle/Plant in QR with Manual Process Integration ​

Description: Include vehicle/plant qualifications in QR codes but route to manual plant lock-on process with pre-populated data from QR.

Analysis

Pros:

  • Provides complete qualification picture in single QR scan
  • Reduces data entry overhead through pre-population
  • Maintains manual verification for plant-specific safety considerations
  • Combines efficiency of QR data with oversight of manual process
  • Supports comprehensive competency record in QR codes
  • Enables efficient workflow for multi-qualified personnel

Cons:

  • Increases QR code size and complexity with vehicle/plant data
  • Creates hybrid workflow that may confuse field operations
  • Implementation complexity for QR/manual process integration
  • Potential for QR data to become out of sync with current qualifications

Risks:

  • QR payload size becomes too large for reliable scanning - Mitigation: Optimise data encoding and test QR size limits
  • Hybrid workflow creates user confusion - Mitigation: Clear UI design and training
  • Pre-populated data creates false confidence - Mitigation: Require manual verification of all pre-populated fields

Implementation Effort: 4-5 weeks (QR generation updates, manual process integration, pre-population logic) Maintenance Overhead: Medium (QR/manual process synchronisation)

Option 2: Exclude Vehicle/Plant from QR Codes ​

Description: Keep QR codes for individual worker competencies only, handle all vehicle/plant qualifications through manual process exclusively.

Analysis

Pros:

  • Simple separation of individual vs plant qualification workflows
  • Keeps QR codes focused and smaller
  • Clear distinction between autonomous and supervised processes
  • No integration complexity between QR and manual systems
  • Manual process provides full oversight for all plant operations

Cons:

  • Requires duplicate data entry for multi-qualified personnel
  • Eliminates efficiency benefits for plant-qualified workers
  • No visibility of plant qualifications during individual worker assessment
  • Potential for data entry errors during manual qualification entry
  • Reduced value proposition of QR system for multi-qualified workers

Risks:

  • Significant efficiency loss for qualified operators - Mitigation: Streamlined manual entry forms
  • Data entry errors increase with manual qualification entry - Mitigation: Validation and verification processes
  • User frustration with duplicate data entry - Mitigation: Training and process improvement

Implementation Effort: 1 week (ensure QR system excludes plant data) Maintenance Overhead: Low (separate systems, no integration)

Option 3: Full QR Autonomy for Vehicle/Plant ​

Description: Allow QR codes to enable full autonomous lock-on for vehicle/plant operations without manual verification.

Analysis

Pros:

  • Maximum efficiency for QR users with plant qualifications
  • Consistent autonomous process for all QR-enabled operations
  • Simple implementation leveraging existing QR system
  • No manual process dependency for qualified operators
  • Fastest lock-on process for plant operations

Cons:

  • Eliminates safety oversight for high-risk plant operations
  • Reduces situational assessment opportunity for plant-specific hazards
  • May not meet safety requirements for vehicle/plant supervision
  • No manual verification of plant-specific conditions
  • Potential regulatory compliance issues

Risks:

  • Safety incidents due to inadequate plant operation oversight - Mitigation: Enhanced QR qualification validation, but eliminates real-time assessment
  • Regulatory non-compliance with plant supervision requirements - Mitigation: Documentation, but may not meet regulatory intent
  • Plant-specific hazards not assessed - Mitigation: Pre-shift briefings, but reduces point-of-use verification

Implementation Effort: 2-3 weeks (QR generation for plant qualifications, autonomous plant lock-on) Maintenance Overhead: Low (extended QR system)

Constraints & Requirements ​

Must Have ​

  • Appropriate safety oversight for plant operations
  • Support for multi-qualified personnel efficiency
  • Clear workflow understanding for field operations
  • Integration with existing competency and manual systems
  • Audit trail for plant lock-on verification

Should Have ​

  • Reduced data entry overhead for qualified operators
  • Reasonable implementation and maintenance complexity
  • Flexibility for different plant operation scenarios
  • Clear responsibility model for plant lock-on verification

Must Not ​

  • Eliminate necessary safety verification for plant operations
  • Create unmanageable complexity in QR/manual process integration
  • Block plant operations due to technical system failures
  • Create significant user experience degradation

Research & Evidence ​

Completed Research ​

  • [x] Multi-qualified personnel analysis - Result: Common for workers to have both individual and plant qualifications
  • [x] Manual plant process requirements - Result: Additional verification beyond individual competency needed
  • [x] QR payload capacity - Result: Additional data possible but size considerations important
  • [x] Plant operation safety requirements - Result: Higher risk operations requiring additional oversight

Outstanding Research ​

  • [ ] QR payload size testing with vehicle/plant data
  • [ ] Field operations preferences for plant lock-on workflow
  • [ ] Technical complexity assessment for QR/manual integration
  • [ ] Safety requirements for vehicle/plant operation supervision

Evidence & Data ​

  • Multi-qualified personnel represent significant portion of workforce
  • Plant operations have additional safety considerations beyond individual competency
  • Manual data entry creates efficiency bottlenecks for qualified operators
  • Plant lock-on requires oversight for situational assessment

Stakeholders & RACI ​

RolePerson/TeamResponsibleAccountableConsultedInformed
Decision MakerProduct Owner✅
Technical LeadDevelopment Team✅
Safety ManagerSafety Team✅
Field OperationsRPOs & Site Protectors✅
Plant OperationsVehicle/Plant Operators✅
Implementation TeamDevelopment Team✅

Impact Assessment ​

Blocked Items ​

  • QR code generation for plant qualifications awaits integration decision
  • Manual plant lock-on UI enhancements depend on integration approach
  • Multi-qualified personnel workflow design requires process clarity

Affected Components ​

  • QR Code Generation Service - Impact: Plant qualification data inclusion (Option 1,3)
  • Manual Plant Lock-On UI - Impact: Pre-population integration (Option 1)
  • QR Code Scanner - Impact: Plant qualification parsing and routing
  • Plant Qualification Service - Impact: Integration with QR system for data synchronisation
  • Audit System - Impact: Plant lock-on audit trail for chosen workflow

Timeline Impact ​

  • If decided by deadline: Can proceed with plant qualification workflow implementation
  • If delayed by 1 week: Minor impact on QR generation and manual process development
  • If delayed by 1 month: Blocks multi-qualified personnel features and plant operation enhancements

Decision Log ​

DateUpdateAuthor
2025-09-09Decision created based on vehicle/plant QR integration questionsSimon + Claude

Next Actions ​

Immediate (Next 3 Days) ​

  • [ ] Test QR payload capacity with vehicle/plant qualification data
  • [ ] Review plant operation safety requirements with Safety Team
  • [ ] Assess field operations preferences for plant lock-on workflow

Short Term (Next 2 Weeks) ​

  • [ ] Evaluate technical complexity for QR/manual process integration
  • [ ] Consult with Plant Operations on workflow preferences
  • [ ] Assess implementation effort for different integration options
  • [ ] Make final decision

Decision Meeting ​

  • Scheduled: [To be scheduled]
  • Attendees: Product Owner, Technical Lead, Safety Manager, Field Operations Representative, Plant Operations Representative
  • Agenda: Review integration options, assess technical and safety requirements, make decision

Requirements ​

  • [To be linked]: Vehicle/Plant operator qualification requirements
  • [To be linked]: Manual plant lock-on process requirements
  • [To be linked]: QR code payload requirements

Specifications ​

  • [To be linked]: QR code generation specification
  • [To be linked]: Manual plant lock-on UI specification
  • [To be linked]: Vehicle/Plant qualification specification
  • ADR-010: QR Code Security and Trust Model (affects vehicle/plant data security in QR codes)
  • ADR-013: DS Worker Lock-On Process (manual processes for different worker types)

Decision Outcome ​

To be filled when decision is made

Final Decision: [Decision made]
Rationale: [Why this decision was made]
Decision Date: [Date]

Internal use only