Process industries and Human Factors: Where are we?. It’s all about us. Area that seems poorly understood But a subject matter that will be familiar to most people
Human Factors and Safety
How to achieve the last step?
Focus on :
Attitudes and behaviour
Management commitment and support
What is your definition?
What does a good culture look like?
Do the questionnaires hide the safety culture of the company?
This can lead to inaction and discouragement
Complex, not updated, too restrictive, do not describe the best way to do the job…
Are the procedures written to help the readers or to protect the writer?
I know how to do this task, I don’t need a procedure
Do we need a procedure for each task?
No Written Instruction required: NWI
Job Aid required e.g checklist/memory aid: JA
Step By Step instruction required: SBS
Training helps people acquire the skills, knowledge and attitudes to make them competent in the health and safety aspects of their works.
What does the trainee need to learn?
Annual training plan, training team, assessment, refreshment…
The combination of the three load factors determines the cognitive task load
High task load
Task load matches operator mental capacity
Sub optimal performance due to under load
Association of :
Cognitive task load analysis
The integration of both these models in combination with a scenario-based context assessment will help identify potential high demand situations.
A wide issue about assuring the human response to an alarm
Operators routinely ignore alarm in the plant control room
Operators facing as few as 10 alarms a minute in an emergency will quickly abandon the alarm list to reduce stress. They will find a way to solve the problem without using the alarms.
Implementation of an alarm philosophy
Notify operators of events required more focused attention
Help to prioritise response
Guide operator towards most appropriate response
“A typical plant can save approximately $3 500 000 per year by providing good control during plant incidents and transition events such as start-ups, feed changes, etc.”
To take human factors into account as part of the process engineering design process requires the design of:
such that they are compatible with the capabilities, limitations and needs of the workers
Identification of Errors Causes
Action error analysis
Performance shaping factor
Design solution to address the Error Causes
Associated tools: Hierarchical task analysis
the cognitive support model
Identify if there could be factors that affect the task performance
stress, work procedures, quality of work environment…
Maintainability and Operability
Designing to reduce
Human Error Precursors
Process Control and Monitoring
Process Operationsand Layout
Too soon to think about it: still a long way to go with Human Factors
More information available on: www.prism-network.org