Abstract
To satisfy the Canadian demand for heavy water which is used as a moderator and heat transport medium in CANDU reactors, Atomic Energy of Canada Limited contracted the Lummus Company of Canada Limited in 1969 to design and construct Bruce Heavy Water Plant 'A' at the Bruce Nuclear Power Development.
The 9.5 square kilometer (2300 acres) site had previously been purchased by Ontario Hydro for the Douglas Point Nuclear Generating Station. It is located in the County of Bruce on the eastern shore of Lake Huron, midway between the towns of Kincardine and Port Elgin, approximately 240 kilometers (150 miles) northwest of Toronto.
Ontario Hydro was responsible for commissioning and operating the plant which has a design capacity of 96.6 kg/h of 99.75% purity heavy water (D2O).
Commissioning of Plant 'A' commenced in 1971 and proceeded without any major difficulty through 1972 and 1973. On 28 June, 1973, Ontario Hydro



