Total quality control: the idea that quality is not an inspection step

Total quality control is the principle that quality is produced by everyone who touches the work, not verified at the end by an inspector. It was named by Armand Feigenbaum in the 1950s, taken further in Japanese manufacturing, and it is the ancestor of nearly every quality approach in use since — including the standards that now govern how quality management systems are written.

The word doing the work is total. Not total as in thorough, but total as in the whole organisation: design, purchasing, production, sales and service all determine quality, and inspecting the finished item can only discover what those functions already decided.

What total quality control replaced

The model before it was straightforward and expensive. Production made things, an inspection department checked them, and defects were scrapped or reworked. Quality was a filter at the end of the line — which meant every defect had already consumed its full material and labour cost before anyone noticed, and it meant the people who caused defects got their feedback days later from someone in a different department.

• Quality became a design question, not just a manufacturing one — most defects are decided before production starts.
• Purchasing became a quality function, because a bad component cannot be inspected into a good product.
• Operators were made responsible for checking their own work, with the authority to stop.
• Cost of quality was measured properly — prevention, appraisal, internal failure and external failure as one figure.
• Suppliers were treated as part of the system rather than as an arms-length market.
• Customer complaints became data about the process rather than incidents to settle.

The cost-of-quality calculation was the argument that convinced managements. Once prevention, appraisal, scrap, rework, warranty and lost customers are added into one number, it is usually a large share of revenue — and the internal and external failure components dwarf what prevention would have cost.

Total quality control and a quality management system

These are related but not the same thing, and the distinction is worth keeping straight. Total quality control is a philosophy about where responsibility for quality sits. A quality management system is the documented apparatus — procedures, records, audits, corrective actions — through which an organisation demonstrates it is doing something along those lines, usually against a standard.

You can have the documentation without the philosophy, and plenty of certified organisations do: procedures written to satisfy an auditor, followed by nobody, with quality still effectively meaning the inspection at the end. The reverse also happens in small companies, where the culture is right and nothing is written down, which works until the founder is on holiday.

Putting the idea to work in a small company

1. Measure what quality failure costs you now: rework hours, scrap, credit notes, warranty work, time spent on complaints.
2. Take the three most frequent defects and trace each back to where the decision that caused it was made.
3. Move the check to the point where the work is done, not to the end of the process.
4. Give the person doing the work the authority to stop and the expectation that they will.
5. Feed complaints back as process data, with a named owner for each recurring cause.
6. Include suppliers: tell them what failed and why, rather than silently reworking their goods.
7. Record what you changed and whether the defect rate moved, so the change survives the person who made it.

What it gets wrong when it is copied badly

The most common failure is exhortation without authority. Posters about quality being everyone's job, in a company where stopping work has consequences and the shipping target is absolute, produce cynicism rather than quality. If the operator cannot stop the line, quality remains the inspector's responsibility whatever the poster says.

The second is measurement theatre — collecting defect data nobody analyses. Data that never changes a decision is a cost with no benefit, and people can tell, which is why the numbers start being made up.

In regulated manufacturing the evidence is the product. An electronic batch record captures each step, parameter and signature as the batch is made, which removes the transcription errors paper sheets create.

The record side of it

Total quality control generates records almost by definition: defects, causes, the corrective action, whether it worked. Ettex Records handles this as structured entries rather than as documents — one row per issue, with fields for the defect, the process step, the cause, the owner and the outcome, so the same defect appearing eleven times is visible as a pattern instead of as eleven separate emails.

It is a record system, not a quality system: no statistical process control, no control charts, no measurement equipment integration, and no certification path. Where a standard or a customer specifies how quality must be managed, that specification governs — this holds the evidence, it does not decide what evidence you need.

Total quality control is one claim: the inspection at the end can only find what earlier decisions already put there. Measure what failure costs, move the check upstream, and give the person doing the work the authority to stop.