Related Experiment Video
Updated: May 10, 2026

Simulation of a Scaled Assembly Process with Collaboration of a Robotic Arm and Monitoring through a Vision System for Quality Control
Published on: August 29, 2025
Application of SHERPA to identify and prevent human errors in control units of petrochemical industry
Mehdi Ghasemi1, Jebrail Nasleseraji, Sedigheh Hoseinabadi
1Department of Occupational Health, Tehran University of Medical Sciences, Tehran, Iran.
Introduction:
Studying human errors as a risk factor in the occurrence of accidents is necessary. Thus, the aim of this study was to identify, predict and control human errors in industrial control units.
Method:
This is a case study carried out using SHERPA in the first unit of Zagros Methanol of Asalooyeh, Iran, and its subunits. To collect the required data, various methods were used: observing, interviewing processing specialists and control unit operators, and studying technical documents and records.
Results:
In total, 222 human errors were identified in various occupational tasks. This study showed that 48.62% of them were action errors, 31.97% were checking errors, 6.75% were retrieval errors, 11.70% were communication errors and 0.90% were selection errors.
Conclusion:
It can be inferred that this method is appropriate for different industries, and it is useful for identifying human errors leading to hazardous accidents.
Related Concept Videos
Introduction to Statistical Process Control
Bioreactor Controls-I
Control Systems
At the heart...
PI Controller: Design
Time-Domain Interpretation of PD Control
Consider the example of control of motor torque. Initially, a positive...
Systematic Error: Methodological and Sampling Errors
Sampling errors originate from improper sampling methods or the wrong sample population. These errors can be minimized by refining the sampling strategy. Defective instruments or faulty calibrations are the sources of instrumental...
