As with many SMRs, the primary goals of the System Integrated Modular Advanced Reactor (SMART) design are enhanced safety and reliability. SMART is a 100 MWe integral system with 57 half-height (2 m) fuel assemblies using a standard 17 X 17 pin array design. Reactivity control includes control rods, burnable poisons within the fuel and soluble boron within the primary coolant. The 25 magnetic jack control rod drive mechanisms are external to the reactor pressure vessel, as are the four reactor coolant pumps that circulate the primary coolant. The integral system includes eight once-through helical coil steam generators and an internal pressurizer. The reactor pressure vessel and passive safety systems are contained within a traditional large — volume containment structure.

The SMART design is supported by an extensive testing program, including safety tests, methods validation tests and component/system performance tests. Specific components that were tested include the fuel assemblies, steam generators, control rod drive mechanisms, and safety injection systems, as well as overall thermal — hydraulic performance.

Steam nozzle

Upper guide structure Core support barrel Feedwater nozzle

Flow mixing
header assembly

Core

Figure 2.5 SMART (Republic of Korea) — Korea Atomic Energy Research Institute (KAERI) © Korea Atomic Energy Research Institute (KAERI).

The initial concept was started in 1997 and achieved Standard Design Approval from the Korean regulator in 2012. Although SMART can be used for electricity only, a co-generation design option has been developed that provides for 90 MWe of electrical output in addition to 40 000 ton/day of potable water using a four-unit multi-effects distillation plant. This co-generation plant can supply sufficient electricity and water to support approximately 100 000 people. Although the first-of-a-kind SMART SMR may be constructed in Republic of Korea, the design is intended primarily for export and no large-scale deployment is expected within the country. Key parameters and a representative graphic for the SMART design are given in Figure 2.5. [5]