BS EN 14373:2021 – TC:2022 Edition

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Tracked Changes. Explosion suppression systems

Published By	Publication Date	Number of Pages
BSI	2022	134

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This document describes the basic requirements for the design and application of explosion suppression systems. This document also specifies test methods for evaluating the effectiveness and the scaling up of explosion suppression systems against defined explosions. This document covers: – general requirements for explosion suppression system parts; – evaluating the effectiveness of an explosion suppression system; – evaluating the scale up of an explosion suppression system to larger than tested volumes; – development and evaluation of design tools for explosion suppression systems; – installation, operation and maintenance instructions for an explosion suppression system. This document is applicable only to explosion suppression systems intended for the protection of closed, or essentially closed, enclosures in which an explosion could result as a consequence of ignition of an explosible mixture, e.g. dust-air, gas(vapour)-air, dust-gas(vapour)-air and mist-air. This document is not applicable for explosions of materials listed below, or for mixtures containing some of those materials: – unstable materials that are liable to dissociate; – explosive materials; – pyrotechnic materials; – pyrophoric materials.

PDF Catalog

PDF Pages	PDF Title
84	undefined
91	1 Scope 2 Normative references
92	3 Terms and definitions
94	4 Symbols and abbreviations (EN 14373)
95	5 Explosion suppression 5.1 Design
96	5.2 General function
97	5.3 Requirements for explosion suppression systems
101	6 Environmental aspects 6.1 General 6.2 Suppressant 6.3 Actuators and other components 7 Experimental testing of the efficacy of an explosion suppression system 7.1 Information to be submitted prior to testing 7.1.1 General
102	7.1.2 Intended use 7.1.3 Information on the parts of the suppression system
103	7.1.4 Calculation model 7.2 Testing 7.2.1 General requirements for test setup 7.2.2 Test program for non-metallic dusts 7.2.2.1 Tests for single vessel volume protection
105	7.2.2.2 Extrapolation to other vessel volumes than tested
107	7.2.3 Test program for metal dust 7.2.4 Test program for gas 7.2.4.1 General 7.2.4.2 Initially quiescent gas mixtures 7.2.4.3 Initial turbulence or presence of turbulence inducing elements
108	7.2.5 Test program for hybrid mixtures of non-metallic dust and gas 7.2.6 Test program for mist-air mixtures 7.3 Parameters to be measured
109	7.4 Test report
110	8 Instructions 8.1 General 8.2 Installation of cables
111	8.3 Assembling 8.3.1 General 8.3.2 Process information requirements 8.4 Commissioning 8.4.1 General 8.4.2 Instructions for hand-over 8.4.3 Commissioning report
112	8.5 Safety 8.6 Maintenance 9 Marking and packaging 9.1 General 9.2 Parts of the explosion suppression system
114	9.3 Explosion suppression system
115	Annex A (informative)Development of an explosion suppression calculation model A.1 General A.2 Extinction
116	A.3 Functional tests for model development
117	A.4 Model validation
118	Annex B (informative)Applications B.1 General B.2 Hazard definition
119	B.3 Typical process equipment B.3.1 Spray dryers B.3.1.1 Introduction B.3.1.2 Definition of elements
120	B.3.1.3 Dust concentration
121	B.3.1.4 Protection concept B.3.1.5 Isolation B.3.1.6 Advanced inerting B.3.1.7 Flame Duration B.3.1.8 Interlocking B.3.2 Clean volumes B.3.3 Elevators
122	B.3.4 Elongated enclosures B.3.5 Pipes B.3.6 Occupied spaces
124	Annex C (informative)Extrapolation to larger volumes
128	Annex D (informative)Significant changes between this European Standard and EN 14373:2005
130	Annex ZA (informative)Relationship between this European Standard and the essential requirements of EU Directive 2014/34/EU aimed to be covered