Fig. 1. Corrosion product layer thickness is less than the recoil release distance

Fig. 2. Recoil release distance is less than the corrosion product layer thickness

Fig. 3. Variation of ⁵⁸Co activity in the steam generator with run time (with no recoil release)

Fig. 4. ⁵⁸Co activity in steam generators with different recoil release probabilities

Fig. 5. Activity ratios of ⁵⁸Co to ⁶⁰Co^{in cores with different recoil release probabilities}

Fig. 6. Activity ratios of ⁵⁸Co to ⁶⁰Co in steam generators with different recoil release probabilities

Fig. 7. Variation of recoil release probability with corrosion product layer thickness

Fig. 8. ⁵⁸Co activity in steam generator with real-time recoil release probability

Fig. 9. Activity ratio of ⁵⁸Co to ⁶⁰Co^{in the core with real-time recoil release probability}

Fig. 10. Activity ratios of ⁵⁸Co^{to 60Co in steam generators with real-time recoil release probability}