Maintenance planning is becoming increasingly important with the growing emphasis for the need of quality control. This book provides an introduction to the subject, explaining how the maintenance requirements of different kinds of equipment are measured and how maintenance operations are planned and managed. The mathematical techniques involved, for example, estimating the probability that a given piece of equipment will fail in any given period, are described but no prior mathematical knowledge is assumed. Throughout, the treatment is practical and the examples used are designed to be of use to the practising engineer or manager. A range of exercises and problems are provided at the end of the book.