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Hazard Identification and Human Error Analysis: A Comprehensive Guide, Lecture notes of Workplace Safety

hazard and risk identification

Typology: Lecture notes

2021/2022

Uploaded on 05/08/2023

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Screening Level Checklist What-if FMEA HAZOP
oLow change of injury or death from toxic gas inhalation
Summary of Hazard Identification Techniques
What are the end products?
โ€ขA list of intrinsic hazards
โ€ขA list of hazardous events and existing/ potential
prevent/mitigation strategies:
oEvent scenarios
oTheir potential causes
oExisting safeguards
oPossible additional safeguards
โ€ขA list of potential consequences and their frequency
oLow chance of burninjuries or death,
oModerate change of damage to process equipment,
Ge
tting Hazards Hazards from Risk Hazard & Risk Final
S
tarted Identification Human Error Analysis โ€“Case Studies Thoughts
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Screening Level Checklist What-if FMEA HAZOP o (^) Low change of injury or death from toxic gas inhalation

Summary of Hazard Identification Techniques

What are the end products?

  • A list of intrinsic hazards
  • A list of hazardous events and existing/ potential prevent/mitigation strategies: o Event scenarios o Their potential causes o Existing safeguards o Possible additional safeguards
  • A list of potential consequences and their frequency o Low chance of burn injuries or death, o Moderate change of damage to process equipment, Started Identification Human Error Analysis โ€“ Case Studies Thoughts

owners. Screening Level Checklist What-if FMEA HAZOP

Summary of Hazard Identification Techniques

How are these techniques conducted?

  • Checklists are often completed by a knowledgeable individual such as a design engineer.
  • What-if, FMEA and HAZOP hazard reviews are done in teams involvement at minimum a facilitator, design engineer and representatives from the operations team (engineer, coordinator).
  • It is always a good idea to review the results of any hazard review with representatives from the operations team and/or asset Started Identification Human Error Analysis โ€“ Case Studies Thoughts

Hazards from Human Error Risk Analysis Getting Started Hazard & Risk

  • Case Studies Final Thoughts Hazard Identification & Evaluation 124 https://www.youtube.com/watch?v=tI8mXzEJFfE

What lies below the water? Major Facility Accidents (BP Oil Spill) Medical treatment First aid care Near miss incidents Most errors happen below the water, they are small and often go unnoticed by upper management. It is essential to focus on this level of hazards as they commonly propagate into larger hazards over time. The Safety Iceberg Started Identification Human Error Analysis โ€“ Case Studies Thoughts

129

Attention

  • Huge amounts of information overloads humans in the workplace and attention on a task can only be sustained for short time, about 20 minutes.
  • Workers are prone to fatigue and errors when their attention is not focused. o Information Bottleneck โ€“ attention can only be focused on a small number of tasks. o Habit Forming โ€“ If a task if repeated often then we tend to completed it without any conscious supervision. Regular, repetitive behaviours can cause mistakes.

Are you still focused on hazard identification?

Understanding Human Limitations

Take a quick stretch.

Started Identification Human Error Analysis โ€“ Case Studies Thoughts

Perception

  • Safe interaction in the workplace requires correct perception of hazards โ€“ information can be easily misinterpreted. o Interpreting the senses โ€“ we interpret information we sense rather than perceiving it directly. Errors can be minimised by making information more visual. o Signal Detection โ€“ More intense stimuli cause more powerful responses. Danger signs in the workplace are purposely designed to provoked a response. Traffic lights signal to stop with a red light (most dangerous) then yellow and finally green to go (no danger). Understanding Human Limitations Started Identification Human Error Analysis โ€“ Case Studies Thoughts

Memory

Spend 10 seconds (not more) and look at these 12 risk related terms.

Quantitative Analysis Layers of Protection Bow-tie Effect Modelling Probit Fixed Limit Stakeholders ALOHA Continual Improvement Risk Management Toxicity Learning Loop Understanding Human Limitations Started Identification Human Error Analysis โ€“ Case Studies Thoughts