We need your consent to use the individual data so that you can see information about your interests, among other things. Click "OK" to give your consent.
Explosive atmospheres - Part 49: Flame arresters - Performance requirements, test methods and limits for use
Translate name
STANDARD published on 1.2.2025
Designation standards: ČSN EN ISO/IEC 80079-49
Classification mark: 389671
Catalog number: 520475
Publication date standards: 1.2.2025
SKU: NS-1212232
The number of pages: 84
Approximate weight : 283 g (0.62 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
This document specifies the requirements for flame arresters that prevent flame transmission when explosive gas-air or vapour-air mixtures are present. It establishes uniform principles for the classification, basic construction and information for use, including the marking of flame arresters, and specifies test methods to verify the safety requirements and determine safe limits of use.
This document is applicable to pressures ranging from 80 kPa to 160 kPa and temperatures ranging from -20 °C to +200 °C.
NOTE 1 - For flame arresters with operational conditions inside the scope, but outside atmospheric conditions, see Annex E.
NOTE 2 - In designing and testing flame arresters for operation under conditions other than those specified above, this document can be used as a guide. This document can also be used to design any additional testing related to the specific conditions of use. This is particularly important when high temperatures and pressures are applied. The test mixtures might need to be modified in these cases.
This document does not apply to the following:
NOTE 3 - Integrated measurement and control equipment, such as integrated temperature and flame sensors as well as parts which, for example, intentionally melt (retaining pin), burn away (weather hoods) or bend (bimetallic strips), are within the scope of this document.
- flame arresters used for explosive mixtures of vapours and gases, which tend to self-decompose (for example, acetylene) or which are chemically unstable;
- flame arresters used for carbon disulfide, due to its special properties;
- flame arresters whose intended use is for mixtures other than gas-air or vapour-air mixtures (for example, higher oxygen-nitrogen ratio, chlorine as oxidant);
- flame arrester test procedures for reciprocating internal combustion engines;
NOTE 4 - Flame arresters for specific applications (e.g. reciprocating internal combustion engines) can use this document as a guide for design but be subject to testing related to their specific use.
- fast acting valves, extinguishing systems and other explosion isolating systems;
- Flame arresters used in gas detectors (those being covered for example, by IEC 60079-29-1 and IEC 62990-1)
Do you want to make sure you use only the valid technical standards?
We can offer you a solution which will provide you a monthly overview concerning the updating of standards which you use.
Would you like to know more? Look at this page.
Latest update: 2025-05-08 (Number of items: 2 198 869)
© Copyright 2025 NORMSERVIS s.r.o.