However, such a method suffers from such significant disadvantages as the 

 requirements for hull penetrations, high pressure piping systems, and internal 

 heat exchangers, as well as the excessive weight of transition forgings for the 

 hull penetrations. There is also the possibility of sediment clogging with the 

 plants resting on or near the ocean bottom. At present pressure hull penetra- 

 tions 3 inches in diameter have the capability of withstanding pressures as 

 great as those found at 3,000-foot depths. The second method of heat 

 removal — condensing steam on the pressure hull — would reduce the high 

 risk design of hull penetrations and the sediment clogging problems, but its 

 limited heat removal capability would make necessary an oversized hull or 

 the provision of finned surfaces with external or internal circulating techniques. 



Months After Contract Award 

 10 12 14 16 18 20 



22 24 26 28 30 



Phase I 



Concept formulation and 

 trade-off analysis 

 Phase II 



Design and test prototype 4,000-volt, 50-amp 

 dry connector 



Phase III 



Develop and test prototype connectors 



a. Wet type, 4,000 volts, 50 amps 



b. Dry type, 4,000 volts, 1 60 amps 

 Phase IV 



Develop and test prototype connectors 



a. Wet type, 4,000 volts, 200 amps 



b. Dry type, 4,000 volts, 500 amps 

 Phase V 



Develop and test prototype connectors 



a. Wet type, 4,000 volts, 500 amps 



b. Dry type, 13,800 volts, 150 amps 



hase 



Time (months) 



Cost ($1,000) 



1 



6 



70 



II 



9* 



200 



III 



' ) 



100 



IV 



6 [ .' 



80 



V 



9) 



150 



VI 



5*** 



100 



* Can start 3 to 5 months after start of phase I 

 '* Can be concurrent 

 ** Conclusion type tasl< at end 



Phase VI 



Final design; review and evaluation of 

 specifications, material selections and 

 test requirements 



10 12 14 16 18 20 

 Months After Contract Award 



22 24 26 28 30 



Figure 27. Milestone chart for cable connector development program. 



89 



