One of the method to use from the design perspective is R & M or reliability and maintainability. As a Design engineer, I want to make sure that the product will be reliable after further use. The product should also have low cost and easy maintainance going forward. The causes for maintenance and operating costs need to be studied in the initial phase of the a projecct. By studying the operation and enviornmental characteristic, wear, tear and degradation causes cost drivers might be identified and evaluated.