1 / 7

Operator Error: Traditional View

Operator Error: Traditional View. Operator error is cause of most incidents and accidents So do something about operator involved (suspend, retrain, fire them) Or do something about operators in general Marginalize them by putting in more automation

deborah-wilder
Download Presentation

Operator Error: Traditional View

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Operator Error: Traditional View Operator error is cause of most incidents and accidents So do something about operator involved (suspend, retrain, fire them) Or do something about operators in general Marginalize them by putting in more automation Rigidify their work by creating more rules and procedures

  2. Fumbling for his recline button Ted unwittingly instigates a disaster

  3. Operator Error: Systems View Operator error is a symptom, not a cause All behavior affected by context (system) in which occurs Role of operators in our systems is changing Supervising rather than directly controlling Systems are stretching limits of comprehensibility Designing systems in which operator error inevitable and then blame accidents on operators rather than designers (Dekker, Rasmussen, Leveson, etc.)

  4. Operator Error: Systems View (2) To do something about operator error, must look at system in which people work: Design of equipment Usefulness of procedures Existence of goal conflicts and production pressures Human error is a symptom of a system that needs to be redesigned

  5. Typical Problems with IT • Getting lost in display architecture • Difficult to find right page or data set • Not coordinating computer entries among multiple people entering things • Workload • Often increase demand at time when already a lot to do • Heads down work in aircraft • Data overload, “keyhole problem” • May have to sort through large amounts of data to find pieces that reveal true nature of situation • Then need to integrate information • Digital displays may require extra mental processing • Hard to notice changes (events, trends) with digital values clicking up and down

  6. Cognitive Consequences of Computers • Increase memory demands • New skill and knowledge demands • Can complicate situation assessment • Can undermine people’s attention management • Can disrupt efficient and robust scanning patterns • Can lead to limited visibility or changes and events, alarm and indication clutter, extra interface management tasks • By increasing system reliability, can provide little opportunity to practice and maintain skills for managing system anomalies • Force people into using tricks necessary to get task done that may not work in uncommon situations.

  7. Human-Centered Design • Need a task analysis first • Get users involved in design early • Evaluate human errors and how to reduce them

More Related