Discussion of "Transmission equipment reliability data from Canadian Electrical Association" [and reply]

The original paper "Transmission Equipment Reliability Data from Canadian Electrical Association" by D.O. Koval (see ibid., vol. 32, p. 1431-9, 1996) presents transmission equipment reliability data collected by the Canadian Electrical Association (CEA) during the period 1988-1992, Historic reliability data are sometimes unavailable or difficult to obtain. The author argues that, keeping this in mind, one can easily see the usefulness of this paper in the task of reliability analysis of transmission systems. Based on the data presented, a number of comments are given as is the original author\´s reply.