construction projects Specially made, every one customized i.e. Volume Low High Variety Project Jobbing Batch Mass Contin-uous Notice how process types overlap! Process types are designed to cater for the volume /variety mixġ1 Project Processes One-off, complex, large scale, high work content “products” e.g. The same organisation can have different parts of the operation organised differently – Volume/Variety is seen as having a large Influence upon the process type deployedĩ Volume & Variety Process types in manufacturing are generally considered as: Project Processes Jobbing Processes Batch Processes Mass Processes Continuous Processes The volume/variety position points to the most appropriate process
High volume operations normally have a low degree of product variety. The two dimensions normally go together: Low volumes operations normally have a high degree of product variety. Low VOLUME High High Not possible? VARIETY Accepted continuum for processes Not viable? LowĨ Volume & Variety Product volume and variety have a big influence on process design. Product Variety – is the variation in products (SKU’s) Product volume and variety is affected by the type of business and the market demand for productsħ Volume-Variety Dilemma Accepted continuum for processes Project process Jobbing process Batch process Mass process Continuous process Fixed position layout Process layout Cell layout Product layout The physical position of all transforming resources The flow of the operation’s transformed resources Process type Basic layout type Detailed design of layout Volume and variety Strategic performance objectives Decision 1 Decision 2 Decision 3Ħ Volume & Variety Product volume – quantity of units produced
‘Making 5,000 sandwiches a day for a supermarket?'(would need to use an assembly line or process, etc.).Ĥ Volume & Variety Layout and flow cannot be discussed without first considering : The product volume and variety The type of process to be employed These factors are inextricably linkedĥ How decisions might be connected (Slack2004) 2 Sandwich making 'If you were making a sandwich for a friend how would you do it? 'If you were making sandwiches for a whole group of friends who were due to arrive in an hour’s time, how would your process change?‘ 'If you were making 5,000 sandwiches a day for a supermarket, how would you wish to organize the production system?'ģ Sandwich making Sandwich for a friend - What kind of sandwich would they want (limited only by the availability of ingredients in the kitchen), when do they want it? (it could be made to order), and how much it could be customized (more salt and pepper) Whole group/1hour arrival (You would butter all the bread together, standardize the products to some extent, and so on).
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