Kwan Yee Lo Snippet A

Geotechnical engineer Kwan Yee Lo describes his work on the intake and discharge tunnels of the Darlington Nuclear Plant, the largest nuclear power plant in Canada. He worked with a student, Dr. Ogawa from Japan, to predict the in-situ stresses and time-dependent deformations of the intake tunnel during its construction in 1983. The predicted values matched the observed values so well that, when constructing the discharge tunnel in 1985, it was deemed unnecessary to take boreholes in the lake or use extensive instrumentation, generating major cost savings. The intake tunnel cost $11.7 million, and the discharge tunnel, which is twice as long, cost $13.5 million.