kontrollschema

Kontrollschema, often translated as control schema or control plan, is a document used in quality management to define planned inspections and tests for a product and its production process to ensure conformity with requirements. It serves as a guide for what needs to be checked, where, how, by whom, and under which acceptance criteria.

A kontrollschema typically covers elements such as part or function, characteristic or measurement, inspection point, method of inspection, sampling plan, acceptance criteria, frequency, equipment or tooling, reference standards, special instructions, and documentation and records. It is derived from customer requirements, product design, and risk analyses such as FMEA, and is integrated with process instructions and manufacturing controls. It often aligns with standards such as ISO 9001 or IATF 16949 and complements statistical process control by coordinating data collection and inspection points.

Use and application: kontrollschema is used during product development, production ramp-up, and ongoing serial production to ensure consistent quality. It supports traceability, audits, and clear decision-making about product conformity and handling of nonconformities. The document is typically updated when design changes, process improvements, or new requirements occur.

Benefits and limitations: a well-maintained kontrollschema reduces variability, prevents defects, and clarifies responsibilities. It requires accurate measurement data, disciplined revision control, and regular reviews to remain effective.

Related concepts include control plans, statistical process control, and quality assurance frameworks that link inspection activities to design and process controls.