Human Engineering Evaluation of the Hyperbaric Research Facility.

Abstract : Over the last fiscal year, while the contractor completed construction and functional testing of the HRF, Phase I of the human engineering evaluation was accomplished. Numerous human factors deficiencies were identified, resulting in over 50 recommendations and suggested alterations or additions. These recommendations can be grouped roughly under the headings of: (1) work place or watch station; (2) environment; (3) personnel; and (4) emergency systems. Regarding chamber work places or watch stations, the majority of recommendations dealt with control panel layouts, functional grouping, gauge placement, and chamber habitability. With respect to the environment, noise and light levels were carefully measured. At the present time, the most serious problem identified involves the excessive noise levels in the control area of the chambers. Octave band analysis reveals that: (1) the primary noise sources are the life support loops and the building air conditioning system, and (2) because of the frequency distribution of the noise, ear protectors are not a viable solution since the peak noise levels fall in the same frequency range as the peak levels in male speech. The noise levels must be reduced at the sources if speech communication among watch standers is to be unaffected. Light levels (luminance) throughout the complex generally fall within acceptable limits (1-20 ft-L). A review of personnel requirements has demonstrated the necessity for increased manpower if a fully functional deep saturation dive capability is to be maintained. Lastly, an analysis of the HRF's emergency system displays demonstrated their high attention-getting value through both auditory and visual alarms, and good readability.