Automatic Storage and Retrieval System

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UNIT 4 AUTOMATED STORAGE/RETRIEVAL SYSTEMS Automated Storage/ Retrieval Systems Structure 4.1 Introduction Objectives 4.2 Functions of Storage System and Definition of AS/RS 4.3 AS/RS Components and Terminology 4.4 Types of AS/RS 4.5 Design of an AS/RS 4.5.1 4.5.2 4.5.3 4.5.4 4.5.5 4.5.6 4.5.7 Load Sizes Determination Calculating Individual Storage Space Dimensions Estimating Storage Spaces Number Estimation of AS/RS Throughput and the Number of S/R Machines Estimating the Size Parameters of the Storage and Retrieval System Determination of Single- and Dual-command Cycle Times for Unit Load AS/RS Estimating the Utilization of S/R Machines 4.6 Summary 4.7 Key Words 4.1 INTRODUCTION Imagine any plant/manufacturing sector without cluttered aisles, excess inventory, lost or damaged products, inaccurate records, endless searching, climbing, bending and frustration. Imagine a highly profitable operation that adds value and decreases expense. AS/RS are means to high density hands free buffering of materials in distribution and manufacturing environments. AS/RS is a complete system designed to transport, stage/store, retrieve, and report on every item in any industrial inventory with up-to-the minute accuracy. Objectives After studying this unit, you should be able to understand the  AS/RS in a computer-integrated manufacturing system, and  design aspects of AS/RS. 4.2 FUNCTIONS OF STORAGE SYSTEM AND DEFINITION OF AS/RS An automated storage/retrieval system (AS/RS) can be defined as a storage system under which a defined degree of automation is to be implemented to ensure precision accuracy and speed in performing storage and retrieval operations. These automated storage and mechanized systems eliminate human intervention in performing basic sets of operations that includes :  Removal of an item from

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