release of fission products. The thermal stress gradient across the hull was 

 not calculated, but if a containment vessel were required, the inner cylinder 

 could be closed off at the upper end. This would result in increased fabrication 

 complexities. Even without the containment vessel, there would be three 

 barriers to the release of fission products: fuel element clodding, primary 

 coolant pressure vessel, and pressure hull. Therefore, a special containment 

 vessel would not be required. 



////////}\ 



S 



all dose rates for full power 

 operation unless otherwise 

 indicated: 6 mrem/hr 

 (occupancy time, 2 hr/day) 



24 mrem/hr 



(occupancy time, 1/2 hr/day) 



— not accessible 



maximum contact dose rates: 

 500 mrem/hr, 24 hours after 

 shutdown; 150 mrem/hr, 30 

 hours after shutdown 



Figure A-4. Maximum radiation levels for in-situ power plants. 



The power conversion system would have a single turbine generator 

 with a main steam system, condensate and feed system, auxiliary steam equip- 

 ment, make-up water system, and purification system. The power conversion 



99 



