Open Access
Table 2.
Pin types and physical parameters of the fuel assembly.
| Pin types | Section view of rods | Regions | Structures | Materials | Density (g/cc) | Diameters (cm) |
|---|---|---|---|---|---|---|
| Fuel pin |  |
1 | Fuel pellet | UO2 | 10.4 | 0.78436 |
| 2 | Filled gas in gap | Helium | 0.0016 | 0.80010 | ||
| 3 | Cladding | Zircaloy-4 | 6.55 | 0.91440 | ||
| BA pin |  |
1 | Fuel pellet | UO2-Gd2O3 | 10.4 | 0.78436 |
| 2 | Filled gas in gap | Helium | 0.0016 | 0.80010 | ||
| 3 | Cladding | Zircaloy-4 | 6.55 | 0.91440 | ||
| CR guide tube/IT tube |  |
1 | Moderator | Water | Depends on the state | 1.12268 |
| 2 | Cladding | Zircaloy-4 | 6.55 | 1.20396 | ||
| CR pin |  |
1 | Neutron absorption materials | Stainless steel | 8.03 | 0.86620 |
| Ag-In-Cd | 10.16 | |||||
| B4C | 3.95 | |||||
| 2 | Filled gas in gap | Air | 0.000616 | 0.87376 | ||
| 3 | Support structure | Stainless steel | 8.03 | 0.96774 | ||
| 4 | Moderator | Water | Depends on the state | 1.12268 | ||
| 5 | Cladding | Zircaloy-4 | 6.55 | 1.20396 | ||
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