Phase 1 1 would include concept developnnent studies for the most 

 promising hull heat rejection system selected in phase I. Sufficient stress 

 analysis would determine the adequacy of hulls with thermal stresses applied. 

 In addition, the upper limit of effectiveness of this approach would be 

 established, with sufficient details developed to initiate the final design 

 process. 



Phase 1 1 1 is similar to phase 1 1 except the most promising seawater 

 circulating system and hull penetration schemes would be analyzed. A stress 

 analysis of the transition forgings for the hull penetrations and a pipe stress 

 analysis would be conducted to minimize the weight of the high pressure 

 piping and forgings. The parameters developed would define cost effective 

 limits of the hull penetration— seawater-circulation concept. Here, as in 

 phase II, the goal would be to extend the state of the art of in-situ power 

 plant heat rejection systems and to provide sufficient details for initiation 

 of the final design process. 



General Utility Power System 



A development program for an underwater utility power transmission 

 system was recommended as a result of the underwater power systems study 

 program. The development program would involve three phases. The 

 estimated budget costs and a milestone chart for the general utility under- 

 water power systems are shown in Figure 29. 



In phase I concepts of a 30-kw to 100-kw general utility power 

 transmission system would be developed for depths of 600 to 10,000 feet. 

 The concepts would provide a secondary power distribution module to 

 serve several dissimilar loads and the necessary primary power conditioning 

 equipment for adaptation to either the surface or the in-situ power plants. 



In phase II additional concepts for a 100-kw to 300-kw general 

 utility power transmission system would be developed. The concepts would 

 provide primary conditioning equipment and a secondary power distribution 

 module to serve several dissimilar loads from an in-situ reactor plant only. A 

 maximum transmission cable length of 6,000 feet would be considered. 



The adaptation and modification of the recommended systems to 

 the available power sources constitute phase II I of the development program. 



The recommended development program for each system described 

 above would include a definition of all major equipment, its availability, a 

 potential schedule of major milestones in its development and construction, 

 placement and recovery techniques, and logistics support. 



With this development program, the underwater general utility power 

 transmission systems would provide the current needs of underwater load 

 modules with total power requirements of 30 to 300 kw down to 10,000 feet. 



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