SIST EN 13794:2003

Overview

SIST EN 13794:2003 specifies the minimum requirements for self-contained closed-circuit breathing apparatus (OEA), specifically designed for escape purposes. This European standard addresses both chemical oxygen types (KO₂, NaClO₃) and compressed oxygen types. It focuses on apparatus intended for emergency escape scenarios, not for continuous work, rescue, or diving operations.

The standard sets requirements for design, construction, and performance, including aspects such as safety, reliability, leaktightness, and usability. It further specifies laboratory and practical performance testing protocols to ensure compliance, alongside required markings and user information to guarantee safe and effective use.

Key Topics

• Scope and Classification:

  • Applies to self-contained closed-circuit breathing apparatus for escape only
  • Covers chemical oxygen and compressed oxygen types
  • Defines apparatus classification by oxygen source and rated working duration

• Construction and Material Requirements:

  • Apparatus must be compact, robust, and not interfere with emergency activities
  • Materials should withstand environmental and mechanical stresses
  • Critical surfaces must be free of sharp edges to prevent injury

• Safety and Hygiene:

  • Ensures prevention of external atmosphere ingress
  • Cleaning and disinfecting capability for user health
  • Specific material requirements to avoid irritation or adverse reaction

• Functional Design:

  • Facepiece can be a mouthpiece assembly or full face mask
  • Secure harness design allows hands-free operation
  • Readily accessible, easy-to-operate quick start system

• Performance Testing:

  • Leaktightness tests ensure no hazardous leaks
  • Mechanical strength assessments through shock and vibration tests
  • Temperature, breathing resistance, flammability, and oxygen/carbon dioxide content checks

• Marking and User Information:

  • Clear and permanent marking for identification and traceability
  • Comprehensive user instructions including durability and safety limitations

Applications

• Emergency Escape:

  • Designed for rapid escape in hazardous atmospheric conditions such as fire, toxic gas release, or oxygen-deficient environments in industrial facilities
  • Suitable for mining, tunneling, chemical plants, refineries, and offshore platforms

• Personal Protection:

  • Ensures life-saving protection for workers needing to evacuate confined or enclosed spaces under emergency conditions

• Regulatory Compliance:

  • Supports employers and facility operators in meeting occupational safety and health regulations relating to respiratory protection in emergencies

Related Standards

• EN 132 - Definitions and pictograms for respiratory protective devices
• EN 134 - Nomenclature of components for respiratory protection
• EN 136:1998 - Requirements for full face masks
• EN 166:1995 - Specifications for personal eye protection
• EN 13274 Series - Testing methods for respiratory protective devices
• EN 400, EN 401, EN 1061 - Previous standards for escape apparatus (superseded by EN 13794)

Practical Value

Implementing SIST EN 13794:2003 ensures that self-contained closed-circuit breathing apparatuses for escape meet high safety, usability, and performance standards. This reduces risk to personnel by providing certified, rigorously tested escape equipment tailored for emergency conditions. Adherence to this standard simplifies regulatory compliance and gives both manufacturers and employers clear guidelines for market access and operational readiness in critical environments where personal safety cannot be compromised.