Unit 9. Automated Storage Systems 9.1 Unit Introduction 9.2 Unit Learning Objectives 9.3 Storage Systems 9.4 Conventional Storage 9.5 Automated Storage Systems 9.6 Automated Storage and Retrieval Systems 9.7 Carousel Storage Systems 9.8 Unit Review 9.9 Self-Assessment Questions 9.10 Self-Assessment Answers 9.1 Unit Introduction Storage is an essential function in an automation system. The material storage system allows materials to be stocked for a specified period of time, before they are re-introduced, or are introduced for the first time, into the automation system. The sorts of stored material are related to the product (e.g. raw materials, purchased parts, work-in-process, finished products, and scrap and rework), the process (e.g. process refuse, such as process waste products; and tooling), and the overall support functions in the factory (e.g. maintenance spare parts, office supplies, and plant records). Each of these material types is typically stored under different conditions and controls. KEYPOINT A material storage system allows materials to be stocked for a specified period of time, before they are re-introduced, or are introduced for the first time, into the automation system. END KEYPOINT In this unit storage equipment is described, alongside appropriate methods in both conventional and automated storage systems. Storage system performance and location strategies examine the operating characteristics associated with storage systems, and where best to place and organise them in the plant layout. Conventional storage methods and equipment turns to an investigation of how storage is regularly accomplished, and the pieces of equipment that is used to achieve storage aims. Automated storage systems, which reduce or eliminate human intervention in the system, are subsequently described. This is followed by an engineering analysis of storage systems, in their various guises. A case study completes the material of the unit, followed by the review of the unit