Human Factors Engineering

Eeny, meeny, miny, moe (Human Factors)

You’re getting ready to perform your pressure testing and the boss says the six-pack of Nitrogen or Oxygen (he can’t remember which) is out back.  You walk out back and this is all you see… what do you do?  By the way, pressure testing with Oxygen is illegal in most states and VERY UNSAFE in […]

Human characteristics (attention, perception, memory, logical reasoning) and the working environment

To address human factors in workplace safety settings, peoples’ capabilities and limitations must first be understood. The modern working environment is very different from the settings that humans have evolved to deal with. This section examines human characteristics that can lead to difficulties interacting with the working environment. The main factors involved include: Attention –

More Human Factors nightmares (NH3 to LPG Tank)

Last August I posted an incident where a 3rd party carrier unloading his/her NH3 truck to an LPG storage tank (SAFTENG Membership content).  The contents of the LPG tank had to be burned/flared off which took around 60 hours.  There were no injuries in that incident, but the consequences of such an error could be catastrophic.  And unfortunately,

Human Factors and Process Valves

The topic of human factors (HF) is often times misunderstood and sadly sometimes not even a thought during a Process Design/Engineering Review or a Process Hazards Analysis.  Now I know some of you will scream… “we are not a refinery” so there is no need for us to go to this level in our efforts

Understanding Human Error (Parts 1-5)

One of the best books in my career is the first edition of “Field Guide to Human Error Investigations” (pdf) by Dr. Sidney Dekker (Ph.D. in Cognitive Systems Engineering); which then became “The Field Guide to Understanding Human Error” (2nd Edition).  Those of you in the Process Safety arena have some baseline knowledge of “Human

Human Factors Assessment of Safety Critical Tasks

The methodology is used to identify and assess critical tasks. Its implementation involves five (5) phases.  Identify Critical Tasks Performed Analyze each Critical Task to the Appropriate Level of Detail Qualitatively Assess Risks Associated with Critical Tasks Identify Risk Control Strategies Incorporate the Results of Applying the Methodology into the Safety Case

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