Job, batch and flow suit different combinations of customisation, variety and volume. Job handles a distinct order; batch shares setup across a group; flow repeats sequential operations. Real businesses can combine arrangements.
Lean is an approach to value and waste reduction within manufacturing or services, not a fourth mutually exclusive arrangement. Removing unnecessary waiting or rework can help without cutting necessary safety checks or customer requirements.
Production arrangements
Technology
Automation performs tasks with reduced direct human intervention; CAD aids design and CAM controls manufacturing. A person operating a powered tool throughout is using machinery but not necessarily automation.
Potential benefits include consistency, speed and lower unit cost at sufficient demand. Assess setup, integration, training, maintenance, energy, flexibility and downtime. Work may be displaced or changed and new skills required; neither job losses nor cost savings are identical in every case.
Technology needs an operational case
Just in time (JIT)
JIT coordinates supplies close to use and keeps average stock low. It may reduce storage, spoilage and funds tied up, but does not mean every input arrives at an exact promised instant or that all stock disappears.
Reliable delivery, quality and information are essential. Frequent orders may raise transport costs or reduce purchasing discounts; disruption can stop operations with little buffer. Compare the total cost and resilience with holding suitable spare stock.
JIT: compare benefits and exposure
Quality
Quality means meeting relevant requirements and customer expectations, not simply adding luxury features. Quality control detects departures through inspection or testing at appropriate stages; assurance uses planned systems to support prevention and consistency. They can be combined.
TQM gives people throughout the organisation a role in customer-focused improvement. ISO 9001 concerns quality management systems and external bodies perform certification, not ISO itself. BSI Kitemark certification covers the product or service and stated scheme; these are different forms of assurance, not guarantees that no defect will occur.
Quality approaches work together
Costs of poor quality
Faults may cause scrap, rework, delays, returns, warranty work, recalls and reputational damage. Consequences depend on severity, detection and response; safety and customer requirements remain necessary even when a simple cash estimate is favourable.
Fictional prevention calculation: £200 process improvement reduces faults from 100 to 20; 80 avoided × £4 rectification cost = £320 avoided cost and £120 net saving before other effects. The saving depends on those assumptions and is not a claim that QA always costs less than inspection.
A fictional prevention decision
Customer service
Useful service includes accurate product knowledge, clear communication, accessible help, timely responses and suitable after-sales support. These may strengthen satisfaction and repeat business but also require resources.
For complaints, listen, establish the facts, explain and carry out an appropriate response, then use feedback to address causes. Online channels may increase access but need reliable staffing and consistent information; fast replies alone do not prove a problem was resolved.
Respond to a customer problem
Productivity and efficiency
Productivity = output ÷ a defined input, such as saleable units per labour hour. Efficiency concerns resources and waste for the output and quality required. Productivity can rise while costs, defects or dissatisfaction also rise.
Fictional example: 500 made minus 20 rejected = 480 saleable in 100 hours, or 4.8 per hour. Later 600 minus 60 = 540 in 100 hours, or 5.4: an increase of 12.5%. Rejections rise from 4% to 10%, so investigate quality as well as the productivity measure.
Saleable output and quality
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