vuototesteissä

Vuototesteissä (in leak testing) is the Finnish term used for procedures that verify whether a device, component, or assembly can retain fluids or gases without leaking. Leak testing is essential for safety, reliability, and regulatory compliance across many sectors, from plumbing and automotive to medical devices and aerospace.

Common techniques include hydrostatic testing, where the item is filled with liquid and pressurized to observe leaks; pneumatic testing using air or inert gas; and vacuum testing that detects leakage by pressure differentials. For very small leaks, methods such as helium leak testing or mass spectrometry are used. Bubble tests involve submerging the device in a liquid and watching for escaping bubbles.

Typical procedures involve preparing the test article, selecting a test medium and pressure or vacuum level, sealing openings, applying the test condition, monitoring for a specified duration, and evaluating against acceptance criteria defined by industry standards or design specifications.

Limitations include the potential for material damage at high test pressures, the need for compatible test fluids, and the challenge of detecting ultrafast leaks. The choice of method depends on the product, the expected leak rate, and practical constraints.

Vuototesteissä terminology around technique and acceptance criteria is governed by ISO, ASTM, EN, and national standards, adapted by manufacturers.