Glossary Updates12 new terms added to the glossaries · October 2, 2026, 22:44 CEST
AI TechDocKnowledge

Glossary · Risk assessment and risk reduction

Personal protective equipment (PPE)

Also known as: PPE

In occupational and machine safety, personal protective equipment (PPE) is equipment worn by a person to reduce exposure to hazards, such as safety glasses, hearing protection, gloves or safety footwear. It is the last level of the hierarchy of controls.

  • Machine safety
  • Human factors

In one sentence

Personal protective equipment (PPE) protects the wearer only while worn and fitted correctly, which is why it ranks last in the hierarchy of controls.

Example

The operating manual of a grinding machine requires eye protection and hearing protection at the workstation because sparks and noise remain after guarding and enclosure.

Explained in context

Context cards connect this term with others to answer one question. Also in British English and German.

How it applies

  • Human factors: PPE depends on correct selection, fit, maintenance, training and consistent use. Discomfort, heat and poor visibility lead people to remove it.
  • Machine safety: For manufacturers, PPE is not a protective measure of the machine. Where residual risk remains, the information for use specifies the PPE that the user must provide.
  • Technical documentation: Name the PPE concretely (type and protection class where relevant) and link it to the task and hazard, for example hearing protection because of a noise hazard during cutting. Use safety signs at the workstation as well.
  • USA: OSHA requires employers to assess workplace hazards and provide appropriate PPE; this is an employer duty, separate from the manufacturer's design duties.

PPE vs. engineering control

An engineering control protects everyone in the area without their action. PPE protects only the person wearing it, and only if worn correctly.

By knowledge.aitechdoc.world · Published September 25, 2026 · Last reviewed

Source: AI TechDoc Knowledge editorial definition, based on ISO 45001:2018, Occupational health and safety management systems

Definitions follow the cited standards and specifications. Where a source is a copyrighted publication, such as an ISO, IEC or EN standard, the definition is a close paraphrase, not a verbatim quotation, so as not to infringe copyright. We recommend reading the original publication. The sections “How it applies” are editorial commentary by AI TechDoc Knowledge and are not part of any standard.

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