Human engineering safety

Human engineering safety deals with providing a safe system-operator interface. This includes protecting the operator from the system and protecting the system from the operator. 

Key human engineering safety reference standards include ... 

LESF (Figure 3.4.5-5), exemplified for the large LOCA, is compared with SELF. Event tree headings are the refueling water storage tank (RWST) a passive component, an engineered safety system (SA-1) and four elements of the containment system. Other examples of the LESF method show human error in the event tree while the criteria for system success is usually in the tan It tree analysis. 

This model of accident causation is described further in Figure 1.3. This represents the defenses against accidents as a series of shutters (engineered safety systems, safety procedures, emergency training, etc.) When the gaps in these shutters come into coincidence then the results of earlier hardware or human failures will not be recovered and the consequences will occur. Inap-... 

The other global dimension of the systems approach is the need for the existence of policies which address human factors issues at senior levels in the company. This implies that senior management realizes that resources spent on programs to reduce error will be as cost-effective as investments in engineered safety systems. 

Many companies, particularly in aerospace, use integrated product teams that include, among others, design engineers, safety engineers, human factors experts, potential users of the system (operators), and maintainers. But the development process used may not necessarily take maximum advantage of this potential for collaboration. The process outlined in part III tries to do that. 

Human-factors safety, as used here, refers to the biomedical, psycho-social, workplace-environment, and engineering considerations pertaining to people in a human-machine system. Some of these considerations are the preparation, validation, and use of procedures to guide operations, surveillance, and maintenance the training requirements related to human factors and the workplace environmental conditions. 

The definition of cnstomer expectations should be balanced with an analysis of their effects on the overall system design and performance, as well as on the human engineering knowledge, skills, and abilities availability rehability safety and training requirements of the humans required to support life cycle processes. 

Section 3.6 Synthesis. Includes the approach and methods to transform the fimctional architecmre into a design architecture (hardware, software, and humans to support the system life cycle), to define alternative system concepts, to define physical interfaces, and to select preferred product and process solutions. Describes how requirements are eonverted into detailed design specifications for hardware, software, human engineering, manpower, personnel, safety, training, and interfaces. Approaches and methods for the engineering areas, quahty factors, and engineering specialty areas in Section 3.2 are also defined. In addition, nondevelopmental items and parts control are included. 

Section 3.7 Design Verification. Includes a description of the approach and methods planned to verify that the design architecture, established from synthesis, is both upward and downward traceable to the functional architecture and satisfies the requirements of the validated requirements baseline and supports baseline of configurations and specifications (including the human engineering, manpower, personnel, safety, and training specification). 

Human Engineering Ltd. 2005. Development and Validation of the HMRl Safety Culture Inspection Toolkit. London Health and Safety Executive. 

Human factors health and safety issues (climbing, awkward postures, extreme environmental conditions, inadequate physical and visual access, manual material handling) ASTM F1166-2007—Standard Practice for Human Engineering Design for Marine Systems, Equipment and Facilities[mu tip e sections)... 

Surry, j. Industrial Accident Research A Human Engineering Appraisal. Labor Safety Council, Ministry of Labor, Ontario (1974)... 

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