The urgency is unavoidable if it is not attributable to any act or omission of the contracting authority, and could not have been foreseen by the contracting authority.
Mae'r brys yn un na ellir ei osgoi os nad yw i'w briodoli i unrhyw weithred neu anweithred ar ran yr awdurdod contractio ac na allai gael ei ragweld gan yr awdurdod contractio.