Human Factors Engineering Why Smart People do Dumb

Human Factors Engineering Why Smart People do Dumb Things. Standards Certification Education & Training Publishing Conferences & Exhibits

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AREVA’s Human Factors Expertise • Global Human Factors Expertise • Diverse Team • Experience – – – – MCR design and upgrades NUREG-0711 & NUREG-0700 Function Allocation Task Analysis Ergonomic Analyses Usability HSI Design and Evaluation

Today’s Objectives By the end of today’s session, you will be able to… ü Define the term “Human Factors” ü Discuss how poor human factors design can influence human performance ü Identify and use selected human factors principles to improve human performance

The Monkey Business Illusion

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This is how we really read… MAIN REGULATING VALVES BYPASS REGULATING VALVES Main Regulating Valves Bypass Regulating Valves

e r a s n Huma r o f d e r hardwi f o s e p y t n i a t r ce. r o i v a beh We’re inheren tl and we’re inh y good at some things… erently not go od at others.

What is Human Factors? • HFE is a systematic approach to guide the human interactions with a facility (say, a “control room”) to ensure that all functional aspects of human involvement are achievable without introducing opportunities for human error. • HFE considers human. . . – – – Capabilities Limitations Characteristics Behaviors Motivations …as they impact the design of structures, systems and components.

HUMAN FACTORS AT WORK…

Control Panel CRT

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DESIGNING FOR HUMAN FACTORS

Visibility Feedback Natural mapping Affordances Constraints

Visibility and Feedback Principle #1: Make relevant parts visible. Principle #2: Give each action an immediate and obvious effect

Visibility and Feedback Sound can be used to provide similar information. When the electric engine is engaged, the Prius is quieter than a vacuum cleaner.

Natural Mappings • Mapping = the relationship between two things • Natural mappings can be – Cultural – Biological – Spatial Principle #3: Capitalize on the concept of natural mappings

Natural Mappings

Natural Mappings

Affordances • Affordance is a property of the object. They provide strong clues to the operation of things. • Suggest how the object should be used – “Verb”-able • Users know what to do just by looking at the object. – No instructions needed! • Examples – Door plates – Knobs – Button

Affordances

Affordances Principle #4: Use the affordances of objects to help infer their use

Constraints • Constraints limit how the design can be used • Types: – Physical – Square object and round hole – Cultural – Light switches – Logical – Order (1, 2, 3 or a, b, c) Principle #5: Restrict the kind of interaction that can take place at a given moment

Human factors guidelines can helprsus optimize a guser’s uideperformance. lines can hel p us optimize a user’s perfor mance.

Some good human factors resources… • Checklists and guidelines – NUREG-0700, Rev. 2, “Human System Interface Review” – MIL STD 1472, “Design Criteria Human Engineering” • Professional Societies – Human Factors and Ergonomics Society (HFES) – Electric Power Research Institute (EPRI) • Web Resource – Jacob Nielsen’s 10 Usability Heuristics (http: //www. nngroup. com/articles/ten-usability-heuristics ) • Books – Human Factors Engineering and Design, by Sanders and Mc. Cormick – Kodak's Ergonomic Design for People at Work, by The Eastman Kodak Company

Thank You! Paris Stringfellow, Ph. D. AREVA, Inc. (704)805 -2661 Paris. Stringfellow@AREVA. com www. AREVA. com