财务管理与财务分析运营管理课件9.pptVIP

Lean Systems How Lean Systems  fits the Operations Management Philosophy Lean Systems Lean systems are operations systems that maximize the value added by each of a company’s activities by paring unnecessary resources and delays from them. (video) Just-in-time (JIT) philosophy The belief that waste can be eliminated by cutting unnecessary capacity or inventory and removing non-value-added activities in operations. JIT system: A system that organizes the resources, information flows, and decision rules that enable a firm to realize the benefits of JIT principles. Push and Pull Systems of Work Flow Push method: A method in which production of the item begins in advance of customer needs. Example: A buffet where food is prepared in advance. Pull Method: A method in which customer demand activates production of the service or item. Example: A restaurant where food is only prepared when orders are placed. Lean systems use the pull method of work flow. Quality at the Source Quality at the source is an organization-wide effort to improve the quality of a firm’s products by having employees act as their own quality inspectors, and never pass defective units to next stage. One approach for implementing quality at the source is to use poka-yoke, mistake-proofing methods aimed at designing fail safe systems that minimize human error. Another approach for implementing quality at the source is a practice the Japanese call jidoka, and andon, which gives machines and machine operators the ability to detect when an abnormal condition has occurred. (video) Small Lot Sizes Lot:?A quantity of items that are processed together. Setup: The group of activities needed to change or readjust a process between successive lots of items. Single-digit setup:?The goal of having a setup time of less than 10 minutes. Uniform Workstation Loads A lean system works best if the daily load on individual workstations is relatively uniform Uniform Plant Loading Uniform Workstation Loads Ser