Effects of process-generated hydrogen on RPV walls

5. Hydrogen production in PWR

(a) 4000 ppm B, 5 ppm Li, 50 cm 3 /kg H 2 , 0.01 ppm O 2 and H 2 O 2 , T=330 ◦ C and low radiation conditions.

(b) 4000 ppm B, 5 ppm Li, 50 cm 3 /kg H 2 , 0.01 ppm O 2 and H 2 O 2 , T=290 ◦ C and low radiation conditions.

(c) 0 ppm B and Li, 50 cm 3 /kg H 2 , 0.01 ppm of O 2 and H 2 O 2 and T=330 ◦ C and low radiation conditions.

(d) 4000 ppm B, 5 ppm Li, 25 cm 3 /kg H 2 , 0 ppm of O 2 and H 2 O 2 and T=290 ◦ C and high radiation conditions.

(e) 0 ppm B and Li, 50 cm 3 /kg H 2 , 0.01 ppm of O 2 and H 2 O 2 and T=330 ◦ C and high radiation conditions.

(f) Legend

Figure 5.7: Stability test of the model for extreme conditions. The graphs show the concentration of each of the species in the primary water as a function time. The conditions for each of the graphs is given in the caption. The time needed to reach a steady state condition can be deduced from the graphs. 54