Fixed firefighting systems - Condensed aerosol extinguishing systems - Part 1: Requirements and test methods for components

CEN/TR 15276-1:2009

en: Fixed firefighting systems - Condensed aerosol extinguishing systems - Part 1:Requirements and test methods for components
uk:

TECHNICAL REPORT

RAPPORT TECHNIQUE

TECHNISCHER BERICHT

ICS 13.220.20
English Version
Fixed firefighting systems - Condensed aerosol extinguishingsystems - Part 1: Requirements and test methods forcomponents
Installations fixes de lutte contre I'incendie - Systemes Ortsfeste Brandbekampfungsanlagen - Loschanlagen fur
d'extinction a aerosol - Partie 1 : Exigences et methodes kondensierte Aerosole - Teil 1: Anforderungen und
d'essais pour les elements constitutifs Priifverfahren fur Bauteile
This Technical Report was approved by CEN on 9 September 2008. It has been drawn up by the Technical Committee CEN/TC 191.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION Management Centre: rue de Stassart, 36 B-1050 Brussels

Contents Page
Foreword 4
Introduction 5
1 Scope 6
2 Normative references 6
3 Terms and definitions 7
4 Component requirements 9
4.1 Condensed aerosol generator 9
4.2 Solid aerosol-forming compound 9
4.3 Cooling mechanism 9
4.4 Ignition device 9
4.4.1 General 9
4.4.2 Electrical ignition device 9
4.4.3 Thermal ignition device 9
4.4.4 Other methods of ignition device 9
4.5 End plate and housing 10
4.6 Extinguishants 10
5 Condensed aerosol generators requirements 10
5.1 General 10
5.2 Extinguishing factor 10
5.3 Agent distribution 10
5.4 Discharge time 10
5.5 Ambient temperature and humidity operation ranges 10
5.6 Service life 10
5.7 Shelf life and storage conditions 11
5.8 Corrosion 11
5.9 Vibration 11
5.10 Mechanical shock 11
5.11 Discharge temperature 11
5.11.1 General 11
5.11.2 Casing temperature 11
5.11.3 Aerosol flow temperature 11
5.12 Ignition device 11
5.12.1 General 11
5.12.2 Electrical ignition device 11
5.12.3 Thermal ignition device 12
5.13 Function reliability 12
5.14 Open fire conditions 12
5.15 Accessories 12
5.16 Documentation 12
6 Marking 12
7 Test methods 13
7.1 Conditions 13
7.2 Samples 13
7.3 Conformity 14
7.4 Extinguishing factor determination 14
7.5 Coverage determination 14
7.6 Discharge time test 14
7.7 Temperature and humidity operation range tests 15
7.7.1 Object of the test 15
7.7.2 Test procedure 15
7.7.3 Low temperature Test 15
7.8 Accelerated ageing test 15
7.8.1 Test time 15
7.8.2 Test procedure 16
7.9 Corrosion test 16
7.10 Stress corrosion test 17
7.11 Vibration test 17
7.12 Impact test 18
7.12.1 Test procedure 18
7.12.2 Test apparatus 18
7.13 Drop test 20
7.13.1 Impact surface 20
7.13.2 Procedure 20
7.13.3 Requirements 20
7.14 Casing and aerosol flow temperatures test 20
7.14.1 Casing temperature test 20
7.14.2 Aerosol flow temperature test 20
7.15 Ignition performance test 20
7.16 Function test 20
7.16.1 Discharge time 21
7.16.2 Aerosol flow temperatures 21
7.16.3 Test procedure 21
7.16.4 Casing temperature test 21
7.16.5 Discharged mass 21
7.16.6 Explosive atmosphere actuation test 21
7.16.7 Requirements 22
7.17 Heat exposure test 22
7.17.1 Object of the test 22
7.17.2 Test procedure 22
7.17.3 Requirements 22
7.18 Explosive atmosphere test 22
7.18.1 Object of the test 22
7.18.2 Test procedure 23
7.18.3 Requirements 23
Annex A (normative) Extinguishing factor/coverage test procedure 24
Bibliography 47Foreword
This document (CEN/TR 15276-1:2009) has been prepared by Technical Committee CEN/TC 191 “Fixed firefighting systems’’, the secretariat of which is held by BSI.
This document has the general title Fixed fire-fighting systems - Condensed aerosol extinguishing systems and will consist of the following parts:
—? Part 1: Requirements and test methods for components;
—? Part 2: Design, installation and maintenance. Introduction
It has been assumed in the preparation of this document that the execution of its provisions is entrusted to appropriately qualified and experienced people in the specification, design, installation, testing, approval, inspection, operation and maintenance of systems and equipment, for whose guidance it has been prepared, and who can be expected to exercise a duty of care to avoid unnecessary release of extinguishant.
Product certification: Users of this document are advised to consider the desirability of independent certification of product conformity with this document based on testing and continuing surveillance, which may be coupled with assessment of manufacturer quality systems against EN ISO 9001.
Fire-fighting systems covered in this document are designed to provide a supply of fixed condensed aerosol extinguishing medium to extinguish fire.
The requirements of this document are made in the light of the best technical data known to the working group at the time of writing but, since a wide field is covered, it has been impracticable to consider every possible factor or circumstance that might affect implementation of the requirements.
It is important that the fire protection of a building or plant be considered as a whole. Aerosol extinguishant systems form only a part, though an important part, of the available facilities, but it should not be assumed that their adoption necessarily removes the need to consider supplementary measures, such as the provision of portable fire extinguishers or other mobile appliances for first aid or emergency use, or to deal with special hazards.
Aerosol extinguishants have been recognized as effective media for the extinction of Class A fires (solid surface burning fires) and Class Advice on these matters can be obtained from the appropriate manufacturer of the aerosol generators or the extinguishing system. Information may also be sought from the appropriate fire authority, the health and safety authorities and insurers. In addition, reference should be made as necessary to other national standards and statutory regulations.
It is essential that fire-fighting equipment be carefully maintained to ensure instant readiness when required. Routine maintenance is liable to be overlooked or given insufficient attention by the owner of the system. It is, however, neglected at peril to the lives of occupants of the premises and at the risk of crippling financial loss. The importance of maintenance cannot be too highly emphasised.
Condensed aerosol may contain traces of toxic substances like those produced by a fire, and will obscure vision like smoke from fire.
1 Scope
This document specifies requirements, describes test methods for condensed aerosol extinguishing components and covers solely condensed aerosols.
This document is not intended to indicate approval of the extinguishants listed herein by the appropriate authorities, as other extinguishants may be equally acceptable.
This document is intended as a standard covering solely condensed aerosol.
The condensed aerosol generator typically consists of the following main components:
a) solid aerosol-forming compound;
b) cooling mechanism;
c) ignition device(s);
d) end plate discharge outlet(s);
e) housing;
f) mounting bracket.
This document does not cover dispersed aerosols.
This document requires, as a precaution, that the room is evacuated and sealed off whenever a generator is activated. Precautions include evacuation of the proximity area, criteria for re-entering and other safeguards as stated in Clause 5 of CEN/TR 15276-2:2009.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 316, Wood fibreboards - Definition, classification and symbols
EN 622 (all parts), Fibreboards - Specifications
EN 60068-2-6, Environmental testing - Part 2-6: Tests - Test Fc: Vibration (sinusoidal) (IEC 60068-2-6:2007)
EN 60068-2-30, Environmental testing - Part 2-30: Tests - Test Db: Damp Heat, cyclic (12 h + 12 h cycle) (IEC 60068-2-30:2005)
ISO 209, Aluminium and aluminium alloys - Chemical composition
ISO 5660-1, Reaction-to-fire tests - Heat release, smoke production and mass loss rate - Part 1: Heat release rate (cone calorimeter method)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
authority
organisation, office or individual responsible for approving equipment, installations or procedures in determining acceptability
NOTE The authority may base acceptance on conformity to the appropriate standards.
3.2
clearance
3.2.1
electrical clearance
unobstructed air distance between extinguishing system equipment and unenclosed or uninsulated live electrical components not at ground potential
3.2.2
thermal clearance
air distance between a condensed aerosol generator and any structure or components sensitive to the temperature developed by the generator
3.3
condensed aerosol
extinguishing medium consisting of finely divided solid particles and gaseous matter, these being generated by a combustion process of a solid aerosol-forming compound
3.4
condensed aerosol generator
non-pressurised device which, when activated, generates an aerosol. It includes the mounting brackets
3.5
design factor
extinguishing factor multiplied by the safety factor, required for system design purposes
NOTE 1 The design factor is expressed in grams per cubic metre.
NOTE 2 Extinguishing factor and design factor have been introduced as an alternative to extinguishing concentration and design concentration respectively as concentration of the actual aerosol cannot be measured or even assessed in some cas