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MAP-01-010 HFI Management Guide - Human Factors Integration ...

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Chapter 1 – <strong>HFI</strong> within Naval Capability Acquisition<br />

also drive the design of accommodation, layout, services and provision of Escape<br />

and Evacuation facilities. Supportability of the platform or equipment will also<br />

influence the ashore manning requirement at dockside and throughout the<br />

logistics and training support chain.<br />

<strong>Human</strong> <strong>Factors</strong> provides methods for the analysis of the tasks and workload<br />

driving the estimated complement size for a vessel. Frameworks for conducting<br />

top-down functional allocation between human and equipment, and between<br />

different members of the crew have been developed. Some of these frameworks<br />

consider how human role allocation can be varied dynamically as a function of<br />

situation and operational workload, as technological constraints on the definition<br />

and the location of operator and maintainer posts are relaxed.<br />

Contributions to the Basic Manning Requirement must also be cross-referred with<br />

the Safety Case (see JSP 430 ‘Ship Safety <strong>Management</strong>’ [Ref 6]). The Scheme<br />

of Complement and any subsequent changes will affect overall ship safety.<br />

1.3.2 Personnel <strong>HFI</strong> Issues<br />

A clear understanding of the required characteristics of the crew or system users<br />

is fundamental to effective system design. A Project Specific Target Audience<br />

Description (PSTAD) is used to record the required personnel characteristics of<br />

operators and maintainers. The PSTAD is usually developed in the first phase of<br />

procurement and is progressively developed and used at subsequent phases. A<br />

technique known as Early <strong>Human</strong> <strong>Factors</strong> Analysis (EHFA) plays a key role in<br />

determining the need for, and the application of, a PSTAD. It is vital that each<br />

project is very clear about why a PSTAD is required, the role that it will perform<br />

and how it will be used. The development of a valid and authoritative PSTAD<br />

may require significant effort on the part of a large project. However, failure to<br />

properly represent personnel characteristics for use during the design will<br />

increase risks to operational capability, human safety and whole-life costs. HF<br />

issues deriving from the EHFA will also form an input to the Hazard Log as part of<br />

the Safety Case process. Subsequent revision of the PSTAD may be required as<br />

a means of mitigating HF issues.<br />

Target Audience Descriptions are developed as part of equipment programmes.<br />

A PSTAD is a systematic definition of crew physical characteristics, basic<br />

capabilities, skills, rank structure and Branches and relevant organisational and<br />

social factors. It is used to ensure that the development of platform and<br />

equipment matches human requirements. It is very important that this<br />

information is relevant for the future user population rather than simply reflecting<br />

current personnel or practices. The PSTAD should be collated at the platform<br />

level to check consistency and to ensure that personnel characteristics are taken<br />

into account during platform design. It should also consider the effect of real<br />

operational stress and environmental conditions on future human performance.<br />

The range of crew physical characteristics is relevant when addressing internal<br />

layout, escape routes and accommodation, workspace design and equipment<br />

control. The successful design of deck-head height, step size, access and<br />

egress routes and operator and maintenance positions will be determined by the<br />

actual physical size of personnel. The reach envelope of users must be<br />

modelled when assessing the usability of equipment. Accommodation must be<br />

designed to cater for privacy and other requirements for mixed gender crews.<br />

Nov 2006 Page 1-19 Issue 4

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