Technical regulation EN ISO 16852: safety standards for flame arresters
The international standard EN ISO 16852 establishes strict technical requirements for industrial flame arresters designed to contain and prevent the propagation of flames in pipeline systems and tanks when working with explosive gas-air or vapor-air mixtures. This document regulates classification criteria, design features, marking rules, and test protocols necessary to confirm operational safety and determine limit operating loads.
The standard is applicable to equipment operated in an absolute pressure range from 80 kPa to 160 kPa and temperature conditions from -20 °C to +150 °C. EV Group China specialists emphasize that when designing systems for operation outside the specified parameters, this standard serves as a guideline. In such cases, experts recommend conducting additional validation tests that take into account the specifics of the actual operating media, increased thermal loads, and overpressure.
The scope of EN ISO 16852 does not extend to the following product categories:
- External monitoring and measuring instruments that ensure process safety, with the exception of integrated components (temperature sensors, flame sensors, fusible elements, or bimetallic detectors).
- Devices for handling chemically unstable media or gases prone to self-decomposition (e.g., acetylene compounds).
- Specialized flame arresters for use with carbon disulfide.
- Equipment for oxidizing media other than standard gas-air mixtures (including media with high oxygen or chlorine content).
- Explosion isolation systems, high-speed valves, and automatic fire suppression systems.
- Components integrated directly into the design of explosion-proof pump, compressor, or ventilation equipment.
When implementing the standard’s requirements into production processes, EV Group China relies on the following regulatory documents:
- IEC 60079-1: Explosive atmospheres — Equipment protection by flameproof enclosures “d”.
- IEC 60079-1-1:2002: Test methodology for determining the Maximum Experimental Safe Gap (MESG).