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Improving forensic processes performance: A Lean Six Sigma approach.

Carolina Rojas Alfaro1, Gina Bagnarello Madrigal1, Mauricio Chacón Hernández1

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Forensic science quality practices can slow results. A Lean Six Sigma project improved a ballistics unit's turnaround time by 75%, reducing backlogs and meeting customer expectations.

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Area of Science:

  • Forensic Science
  • Quality Management Systems
  • Operational Efficiency

Background:

  • Accreditation to ISO/IEC 17020:2012 in forensic science can lead to decreased turnaround times.
  • The Costa Rican Department of Forensic Sciences ballistics unit experienced slower results post-accreditation.

Purpose of the Study:

  • To expedite forensic examination processes within the ballistics unit.
  • To identify and address bottlenecks hindering timely case resolution.
  • To improve customer satisfaction by reducing case backlogs.

Main Methods:

  • Implementation of a Lean Six Sigma project utilizing a five-phase problem-solving methodology.
  • Application of data analysis and process improvement tools.
  • Focus on addressing standardization and constraint issues within the workflow.

Main Results:

  • A 97% reduction in cases with a backlog exceeding 3 months.
  • Turnaround time decreased from 4 months to 1 month.
  • Successful transformation of the laboratory's current state to meet customer expectations.

Conclusions:

  • Lean Six Sigma is an effective methodology for enhancing efficiency in forensic science units.
  • Addressing standardization and constraints are critical for improving laboratory performance.
  • The project demonstrated a significant positive impact on customer satisfaction and operational outcomes.