ISO 16972:2020

Overview

ISO 16972:2020 is an international standard published by the International Organization for Standardization (ISO) that provides comprehensive vocabulary and graphical symbols related to respiratory protective devices (RPDs). This standard defines essential terms and specifies graphical symbols used on respiratory protective devices, their components, and instruction manuals to guide users in proper operation. It applies broadly to RPDs but excludes diving apparatus, which is covered under a separate standard (EN 250).

The second edition of ISO 16972:2020 updates terminology used in respiratory protective equipment and focuses on clarity in communication about RPDs for manufacturers, safety professionals, and users worldwide. The standard ensures consistency and improves understanding of respirator terminology and symbols, which are crucial for safety, compliance, and operational effectiveness.

Key Topics

• Vocabulary for Respiratory Protective Devices
  ISO 16972:2020 extensively defines terms associated with respiratory protective devices like masks, filters, valves, breathing apparatus, and hoses. It also clarifies terms linked to human factors such as breathing cycles, inhalation, exhalation, and pressure differentials.

• Graphical Symbols for User Instructions
  The document specifies standard graphical symbols for use on RPDs and related documentation. These symbols help instruct users on correct operation, maintenance, and safety precautions without language barriers.

• Measurement Units and Definitions
  While the 2020 edition has removed the clause on units of measurement, it maintains clear definitions critical to understanding RPD performance characteristics such as airflow resistance, breakthrough time, capacity, and protection factors.

• Human Factors Terminology
  Definitions related to wearer interaction with devices-including terms like donning, doffing, fit-testing, and breathing machine-are explained to improve compatibility and safety practices.

• Scope Exclusions
  This standard specifically excludes diving respirators, directing users to EN 250 for those specific terms and definitions. This ensures clarity and relevance for occupational and industrial respiratory protection outside of diving.

Applications

• Occupational Safety and Health
  ISO 16972:2020 supports workplace safety by standardizing the terminology and symbols for respiratory protective devices. It enables consistent communication between manufacturers, safety officers, and users to prevent inhalation of hazardous substances.

• Manufacturing and Product Development
  Manufacturers use the standard to develop compliant RPDs with appropriate labeling and documented instructions, improving product usability and regulatory adherence globally.

• Training and Instruction Manuals
  Safety trainers and organizations rely on ISO 16972:2020 vocabulary and symbols to prepare training materials that are clear and internationally understandable. This leads to improved user compliance and safety outcomes.

• Regulatory Compliance
  Regulators reference this standard to harmonize requirements for respiratory protective devices in national and international regulations, helping ensure devices meet global safety and communication expectations.

Related Standards

• EN 250 – Specifies terms and definitions for diving apparatus, complementing ISO 16972 by addressing specialized respiratory devices used in underwater environments.

• ISO 17420 series – Focuses on test methods and performance requirements for respiratory protective devices, working alongside ISO 16972 vocabulary for a full understanding of device safety and efficacy.

• ISO/IEC Directives, Part 2 – Provides editorial rules followed in drafting and maintaining ISO standards, ensuring consistency in terminology presentation as seen in ISO 16972.

• EN 12021 – Details quality requirements for compressed air used in breathing apparatus, relevant to the definitions of breathable air and compressed air filters within ISO 16972.

Keywords: ISO 16972:2020, respiratory protective devices, RPD vocabulary, graphical symbols, respiratory protection, personal protective equipment, respiratory safety, respirator terminology, occupational health, safety standards, ISO respiratory standards.