TS EN 764-3

TS EN 764-3 is a terminology-focused standard for pressure equipment, centred on the definition of the parties involved and the basic distinctions between their roles. In pressure equipment work, safe design, conformity assessment, manufacture, inspection and operation rely on coordinated actions by several actors; this standard helps keep those roles consistent within a shared technical language.

Why separate party definitions matter

In the pressure equipment chain, the designer, manufacturer, supplier, notified or competent body, and user or operator may each carry different responsibilities. Clear terminology reduces ambiguity in technical documents, conformity assessment exchanges and safety-oriented workflows. In general technical context, a standard of this kind does not explain how to perform the work; it aligns who is being referred to and how that role is named.

Terminology in the pressure equipment domain

The subject sits within the broader field of vessels, piping, valves and related components intended for pressurised service. As a vocabulary standard, its value is in definitions and role boundaries rather than in test methods, design calculations or numerical performance limits. It supports consistent use of terms across engineering, inspection and regulatory communication.

• Clarifies role boundaries in pressure equipment projects at the language level.
• Helps reduce confusion in conformity assessment and technical communication.
• Provides shared terminology for pressure vessels and related systems.
• Should be understood as a definition-oriented document, not a product design or test standard.