| Symbol | Description | Value and Units |
| T1 | Temperature of primary coolant flowing upward | 576 K |
| T2 | Temperature of primary coolant flowing downward | 569 K |
| T3 | Temperature of metal tube of coolant flowing upward | 571 K |
| T4 | Temperature of metal tube of coolant flowing downward | 565 K |
| T5 | Temperature of recirculated water | 535 K |
| T6 | Temperature of water in the mixing region | 535 K |
| Ls | Level of water of mixing region of secondary coolant | 3.2 m |
| xb | Quality of coolant at the end of the boiling region | 0.233 |
| Psat | Saturation Pressure of secondary water in boiling region | 5.9 MPa |