AECL issued the development agreement in 1969 for the primary BHWP unit (BHWP A). Commissioning of BHWP A was accomplished by Ontario Hydro from 1971 via 1973, Together with the plant entering provider on 28 June 1973, and layout generation capacity becoming reached in April 1974. As a result of good results of BHWP A and the large amount of large