Page 203 - Dynamics and Control of Nuclear Reactors

References 201

1

0.9999

zonal powers (FPU) 0.9998

0.9997
zone 8
zone 9
zone 10
0.9996 zone 11
zone 12
zone 13
zone 14
0.9995
0 5 10 15 20 25
time (h)
FIG. 14.7
Power variation in zones 8-14 due to ramp reactivity insertion in zone 1. FPU: Full Power Unit.
Used with permission from Nuclear Technology, Francis & Taylor (H. Javidnia, J. Jiang, M. Borairi, Modeling and
simulation of a CANDU reactor for control system design and analysis, Nucl. Technol. 165 (2) (2009) 174–189).

Exercises

14.1. Write a sales pitch that might be used to convince a potential reactor buyer to
choose a PHWR rather than a PWR.
14.2. Write a sales pitch that might be used to convince a potential reactor buyer to
choose a PWR rather than a PHWR.

14.3. How would the sales pitches for China and Mexico differ?
14.4. PHWRs are touted for use in developing countries. Why is load-following a
major issue in those countries?
14.5. The authors of Reference 5 used fourteen zones for the PHWR core dynamic
model while PWR core models often use one zone. Explain.

References
[1] W.J. Garland, Editor-in-ChiefThe Essential CANDU: A textbook on the CANDU Nuclear
Power Plant Technology, University Network of Excellence in Nuclear Engineering
(UNENE), McMaster University, Hamilton, Canada, 2019. Retrieved fromhttps://www.
unene.ca/education/candu-textbook.