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All primary system components (core, control rods, pressurizer, steam generators, reactor coolant pumps) are housed within an integral Reactor Pressure Vessel (RPV) which is located within a compact pressure-suppression containment. The reactor + reactor and containment constitute the reactor module, which is housed inside the reactor hull, within a permanently flooded compartment at the bottom of the platform.
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The steam lines run from the reactor module , to the turbine deck; the feedwater lines follow the inverse path. The power conversion cycle is a traditional Rankine steam cycle operating at typical nuclear balance of plant conditions and thus capable of reaching a thermal efficiency in the 31-35% range, depending on the local temperature of the ocean. Cooling water is drawn from the bottom of the ocean, and discharged at ambient temperature at the surface, thus eliminating thermal pollution.
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