9.2 Quality management
- Syllabus
- 9609–2026–2027
- Topic
- 9.2
- Level
- A2
Learning objectives
9.2.1Quality control and assurance• Quality control and quality assurance- quality in terms of meeting customer expectations- the importance of quality- the impact of methods of quality control on a business- the impact of methods of quality assurance on a business- the impact of Total Quality Management (TQM) on a business9.2.2Benchmarking• Benchmarking- the importance of benchmarking in quality management
Quality control detects, assurance prevents and TQM continuously improves
Operational quality is fitness for purpose: consistently meeting stated and implied customer expectations for performance, reliability, safety, availability/service and value. Define measurable requirements from research, complaints/returns, reviews/surveys, repeat purchase, service recovery and technical/legal standards; luxury or extra features are not automatically quality.
Better quality can reduce defects, scrap/rework, warranty/returns and disruption; improve productivity, reputation, loyalty, price/market share and employee pride; and lower legal/safety risk. It also requires prevention, training, systems, supplier and appraisal investment, so evaluate total quality cost and customer value.
| System | Core mechanism and methods | Benefits | Limitations/impact |
|---|---|---|---|
| Quality control (QC) | Inspect/test/sample output or monitor process data against standard; reject/rework/correct | Detects defects before customer, supplies evidence and can protect safety | Detection may be late; inspection labour, sampling misses defects, scrap/rework and 'inspector owns quality' culture |
| Quality assurance (QA) | Preventive designed process: documented standards/procedures, trained self-checking employees, supplier quality, calibration, traceability, audits and certification | Right-first-time consistency, source correction, confidence/reputation and less failure cost | Setup/training/audit time/cost, paperwork/rigidity, employee resistance and process compliance cannot guarantee customer delight |
| Total Quality Management (TQM) | Organisation-wide customer focus, prevention/right first time, continuous improvement, every employee/function, teamwork/quality circles, supplier partnership and evidence | Builds ownership/ideas, cross-process improvement, lower long-run waste/failure and stronger customer quality | Major culture/leadership/training/time change; slow benefits, participation fatigue, cost and failure if targets/incentives contradict quality |
| Cost of quality | Examples |
|---|---|
| Prevention | Design, training, maintenance, supplier development and process improvement |
| Appraisal | Inspection, testing, sampling, audits and calibration |
| Internal failure | Scrap, rework, downtime and retesting before delivery |
| External failure | Returns, warranty, compensation, lost customers/reputation, recalls and legal action |
Set customer/technical standards and baseline → map process/causes → choose risk-based QC and preventive QA → train, resource and empower process owners → use supplier controls and visible feedback → solve root causes through teams → measure defects, yield/rework, complaints/returns, reliability, satisfaction/repeat purchase and total cost → standardise learning and continue improvement.
ext{Percentage failing quality standard}= rac{ ext{output failing standard}}{ ext{total output}} imes100
Choose the combination by failure severity, process variability/volume, service versus manufactured output, skill/automation, current root cause, customer promise and finance/time. QA/TQM may prevent repeat complaints, but product design, capacity, supplier or service gaps still need direct correction; compare implementation cost with avoided internal/external failure over time.
QC and QA are not mutually exclusive: prevention still needs verification and detected defects should trigger root-cause prevention. TQM is a continuing management philosophy/system, not a certificate or final inspection.
Benchmarking converts a comparable performance gap into contextual improvement
Benchmarking systematically compares a defined quality outcome or process with a relevant reference to identify a performance gap and learn how to improve. References may be internal best practice, a competitor, an industry/functional leader or an external standard.
| Benchmark | Value | Limitation |
|---|---|---|
| Internal: another team/site/time | Accessible comparable data and easier learning | May preserve organisation-wide weakness |
| Competitive | Reveals relative customer/market performance | Data secrecy, legal/ethical limits and different strategy/resources |
| Functional/best-in-class | Learns a process from any industry | Transfer may fail because customer/process context differs |
| Standard/customer target | Compliance or explicit expectation | Minimum standard may not create advantage; target can change |
Define customer-critical process/outcome and owner → select comparable benchmark → agree metric definition, scope, period and data quality → measure/normalise current performance → quantify gap → investigate process/capability causes behind the reference → adapt feasible practices, resource/pilot → compare customer, quality, cost and unintended outcomes → standardise or revise and repeat.
Benchmarking can make quality objectives evidence-based, expose complacency/gaps, prioritise resources, transfer proven practices, motivate learning and track competitiveness/continuous improvement. For example, comparing complaint-resolution time is useful only if severity, channel and resolution quality use common definitions.
Problems include unavailable/inaccurate/non-comparable or outdated data; cost/time; legal/confidentiality issues; copying visible practice without capability/culture/cause; competitor imitation that suppresses innovation; gaming a narrow metric; and a benchmark inappropriate to the business's customers, positioning, scale or resources.
The benchmark identifies a question and gap, not the cause or automatic target. Learn the underlying process, adapt it to strategy/customer expectations and monitor the complete outcome rather than copy a number.