Patent ID: 7478347
Filing Date: 2009-01-13
Classification: G05B,Y02P

Abstract:
1. A management apparatus which manages a plurality of semiconductor manufacturing apparatuses each having a plurality of portions, comprising: a storage device which stores, for each portion in each semiconductor manufacturing apparatus, information representing a lapsed time of use or a product processing count till occurrence of a failure after installation of the portion; a calculation device which receives the information stored in said storage device, obtains function information representing a failure probability and/or a failure rate as a function of the lapsed time of use or the product processing count for each portion, and outputs the function information; and an assigning unit which collects pieces of information representing failure probabilities and/or failure rates of the respective semiconductor manufacturing apparatuses on the basis of the function information, sequentially arranges the plurality of management apparatuses in ascending order of failure probability and/or failure rate, and outputs the failure probabilities and/or failure rates.