4.4 .2.1 Background The assembly of the MPTS involves these human factor and safety concerns: • Life support equipment • Mobility and restraint methods/devices • Special tools and aids • Stability and structural integrity of space structure when "man handled" • Work site volume, power, attitude control, etc., requirements • Manipulator interfaces: electrical, mechanical and procedural • Environmental protection requirements for solar flames, micrometeorites and microwave radiation • Safety in mating large structures and installing/checking out high voltage/ high amperage equipment. Maintenance of the MPTS requires answers to these questions before design concepts are firmed: • Should the system ever have a planned shutdown? For what reason and for how long? • Will maintenance by men be done from the microwave radiating side of the antenna? From the heat rejection side of the assembly? • What materials or devices can be tailored to protect men and/or equipment from microwave radiating hazards, but still provide visual information on activity progress? • Are equipment requirements for MPTS assembly operations compatible with equipment requirements for maintenance? Should they be compatible? 4.4 .2.2 Desired Outputs • Remote control activity descriptions • Crew roles and job descriptions • Crew equipment requirements • Crew safety constraints • Work site requirements • Maintenance philosophy • Simulation requirements.
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