Springer, Daniel Geoffrey
Deceased
Daniel Geoffrey Springer
Demographics
30y, male
Date of death
2017-08-07
Finding date
2021-02-23
Cause of death
Head injury due to industrial accident
AI-generated summary
Daniel Springer, a qualified boilermaker, sustained fatal head injuries while removing large external wear plates from an excavator bucket at an open-cut coal mine using an air carbon arc gouger. The wear plates had accumulated stored elastic energy through cumulative heavy use, weld cracking, dirt ingress, and severe indentation. When the cutting process released the welds, the plate sprang back 1.15 metres striking him in the head. This was an unprecedented spring-back event—no prior industry knowledge existed regarding spring-back of this magnitude. The wear plate design (2m × 3.4m) was not standard, had been installed without formal risk assessment or change management processes, and the hazard of stored energy in large indented plates was unknown across the coal mining, boilermaking, and engineering industries. Key lessons include: large damaged wear plates accumulate stored energy creating hidden hazards; indentations, weld cracks, and dirt ingress are warning signs; smaller discrete plates are safer; and formal change management and risk assessment processes must apply to non-standard equipment modifications.
AI-generated summary and tagging — may contain inaccuracies; refer to original finding for legal purposes.
Procedures
Contributing factors
- Large external wear plate design (2m × 3.4m) not approved by original equipment manufacturer
- Cumulative damage to wear plates from heavy use: weld cracking, perforation, dirt ingress, and severe indentation
- Build-up of stored elastic energy in indented metal plates
- Modification of wear plate design without formal risk assessment or change management process
- Lack of industry knowledge regarding spring-back hazard in large indented wear plates
- Unprecedented magnitude of spring-back event (1.15 metres) not foreseeable
- No previous near misses or fatalities of this type to alert industry
- Ill-defined scope of work and novel removal methodology for wear plate package
- Lack of pre-removal inspection protocols or warning signs awareness
- Worker positioned in line with spring-back trajectory with no time to react
Coroner's recommendations
- DNRM (Resources Safety and Health Qld) to follow up on all recommendations in the Nature and Cause Investigation Report and undertake industry-wide audit ensuring compliance and decommissioning of large sheet steel wear plate packages on excavator buckets
- DNRM to issue further Safety Alert or Bulletin alerting industry that spring-back hazard is not limited to excavator buckets and applies to range of equipment deformed or damaged by wear
- DNRM to provide inquest findings to relevant industry training providers to ensure learnings are incorporated in training content for boilermakers and engineers
- All coal mines to ensure modification of plant and equipment undergoes effective risk management process prior to modification
- Modification procedures must require mines to consult with original equipment manufacturer and/or appropriate technical experts when changing OEM design
- Mines to implement change management procedures with mandatory triggers for changes from standard to non-standard equipment design
- Industry to develop awareness that cumulative damage (weld cracking, perforation, wear, dirt ingress, indentation) to large plates increases risk of violent stored energy release
- Pre-removal inspection of wear plates to identify indentations, cracks, dirt ingress as warning signs of spring-back potential
- Use of smaller discrete wear plates instead of large continuous plates where possible
- Development of controlled removal methods for indented plates including restraint during cutting and release of residual stress
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