TransCanada Corp said shipments on its 590,000 barrel per day Keystone oil pipeline are likely to resume on Monday.

James Millar, a spokesman for the company, said in an e-mail that a Monday restart of the line ``is looking very positive at this point.''

Keystone, which carries a quarter of Canada's crude oil exports to the United States, has been shut since Wednesday as the company investigated what it called ``a small anomaly'' in the pipe.