1、BRITISH STANDARDBS EN 14470-2:2006Fire safety storage cabinets Part 2: Safety cabinets for pressurised gas cylindersThe European Standard EN 14470-2:2006 has the status of a British StandardICS 13.220.40; 71.040.10g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54
2、g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 14470-2:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2007 BSI 2007ISBN 978 0 580 49984 5National forewor
3、dThis British Standard was published by BSI. It is the UK implementation of EN 14470-2:2006. The UK participation in its preparation was entrusted to Technical Committee LBI/18, Laboratory furniture and fittings.A list of organizations represented on LBI/18 can be obtained on request to its secretar
4、y.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORM
5、E EUROPENNEEUROPISCHE NORMEN 14470-2August 2006ICS 13.220.40; 71.040.10English VersionFire safety storage cabinets - Part 2: Safety cabinets forpressurised gas cylindersArmoires de stockage de scurit incendie - Partie 2 :Armoires de stockage de scurit pour bouteilles de gazcomprimFeuerwiderstandsfhi
6、ge Lagerschrnke - Teil 2:Sicherheitsschrnke fr DruckgasflaschenThis European Standard was approved by CEN on 21 July 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard withou
7、t any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made
8、by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greec
9、e, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Cen
10、tre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14470-2:2006: EEN 14470-2:2006 (E) 2 Contents Page Foreword3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and Definitions .5
11、4 Classification6 5 Construction.6 5.1 Fire protection6 5.2 Ventilation.6 5.3 Gas cylinder restraining7 5.4 Insertion and removal of pressurised gas cylinders 7 5.5 Installation of gas pipelines (for gas cylinders in use)7 5.6 Installation of electric cables (where appropriate).7 6 Fire resistance7
12、7 Information to be supplied7 8 Manufacturers marking and labelling .8 Annex A (normative) Type G testing to determine fire resistance.9 A.1 Principle9 A.2 Testing apparatus and test methods.9 A.2.1 Furnace .9 A.2.2 Measuring equipment9 A.2.3 Weighing system .9 A.3 Test models9 A.3.1 Quantity and de
13、scription of test models.9 A.3.2 Preliminary examination of the test model .10 A.4 Preparation of fire test 10 A.4.1 Safety cabinet.10 A.4.2 Installation of test model 10 A.4.3 Temperature measuring device placement.11 A.4.4 Temperature measuring device placement in the fire room .11 A.5 Fire testin
14、g procedure.11 A.6 Test report 11 Annex B (informative) Approval regarding construction alterations.15 Bibliography 16 EN 14470-2:2006 (E) 3 Foreword This document (EN 14470-2:2006) has been prepared by Technical Committee CEN/TC 332 “Laboratory equipment”, the secretariat of which is held by DIN. T
15、his European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2007, and conflicting national standards shall be withdrawn at the latest by February 2007. EN 14470, Fire safety storage cabinets, consists
16、 of the following parts: Part 1: Safety storage cabinets for flammable liquids Part 2: Safety cabinets for pressurised gas cylinders According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austr
17、ia, Belgium, 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. EN 14470-2:2006 (E) 4 In
18、troduction This European standard describes the design and test criteria for safety cabinets used by laboratories to store pressurised gas cylinders at normal room temperature. The cabinet is designed and constructed to ensure that in the event of fire, the contents of the cabinet do not contribute
19、any additional risks or spread the fire for at least 15 minutes. The cabinet is also designed and constructed to ventilate minor gas leakage within the cabinet. Testing the cabinet under fire conditions is a normative part of this standard and the procedures and interpretation of the tests are descr
20、ibed in detail. The fire rating allows time for personnel to leave and fire fighters to enter the area before the pressurised gas cylinders become unstable. EN 14470-2:2006 (E) 5 1 Scope This European standard is a product specification, giving performance requirements for fire safety cabinets used
21、for storing pressurised gas cylinders. It is applicable to cabinets with a total internal volume suitable to store pressurised gas cylinders with a total volume not exceeding 220 l, including cylinders of purging gases. NOTE 1 This means that up to four gas cylinders of 50 l or up to three gas cylin
22、ders of 70 l can be stored in a single cabinet. NOTE 2 It is intended that the pressurised gas cylinders can be in use while in the cabinet. NOTE 3 Attention is drawn to national regulations which can apply with regard to the storage and use of pressurised gas cylinders. NOTE 4 The safety cabinet ca
23、n be free standing, restrained to a wall or mounted on wheels or castors. This standard is not applicable to brick enclosures, walk-in storage rooms or cabinets which do not take their weight on their base. Requirements are given in respect to the construction of the cabinet and its capacity to resi
24、st fire conditions on the outside. A type test is included, which is based on the already existing fire resistance (heating curve) tests given in EN 14470-1. The tests described in this European Standard are type tests (for the storage of flammable liquids EN 14470-1 is applicable the criteria for f
25、ailure are different see Annex A). 2 Normative references The following referenced documents are indispensable for the application of this European Standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any ame
26、ndments) applies. EN 1363-1:1999, Fire resistance tests Part 1: General requirements EN ISO 13943:2000, Fire safety Vocabulary (ISO 13943:2000) ISO 3864 (all parts), Graphical symbols - Safety colours and safety signs 3 Terms and Definitions For the purposes of this document, the terms and definitio
27、ns given in EN ISO 13943:2000 and the following apply. 3.1 type specimen of a design manufactured with the characteristics intended for serial production 3.2 type testing conformity testing on the basis of one or more specimens of product representative of the production EN 14470-2:2006 (E) 6 4 Clas
28、sification A gas cylinder cabinet shall be classified as one of the Types listed in Table 1. Table 1 Fire safety cabinet for pressurised gas cylinder Type classification Type Time taken for Tato rise by 50 K min Test according to EN 1363-1:1999 Ventilation connection facility required G15 15 Yes Yes
29、 G30 30 Yes Yes G60 60 Yes Yes G90 90 Yes Yes a T is the temperature taken on the surface of the gas cylinder valve spanner flat. 5 Construction 5.1 Fire protection The cabinet shall be designed and constructed to ensure that, in the event of a fire, the contents of the cabinet do not contribute any
30、 additional risks or spread the fire for at least 15 minutes. 5.2 Ventilation 5.2.1 Cabinets shall be equipped with openings for inlet and exhaust air, which allows for connection of an exhaust air system to the cabinet. In a ventilated cabinet in which ventilation is taking place, with the doors cl
31、osed, latched and locked, the following extraction rates shall apply: when using flammable and fire supporting gas, at least 10 air changes of the cabinets volume per hour; when using toxic gas, at least 120 air changes of the cabinets volume per hour. Under the above conditions the pressure drop sh
32、all not exceed 150 Pa. The ventilation system shall maintain a lower pressure in the cabinet than in the surrounding atmosphere. Ventilation shall take place on the top and bottom of the cabinet. Design of the air circulation system within the cabinet shall ensure adequate purging from minor leakage
33、. This shall be tested by visual inspection and by measuring the air flow and pressure drop while the cabinet is empty. NOTE The inlet pressure drop and the number of air changes have been chosen to provide purging efficiency. 5.2.2 In the event of a fire, the inlet and exhaust vents shall close aut
34、omatically. The vents closing system shall be tested as part of the fire-resistance test in Annex A. EN 14470-2:2006 (E) 7 5.3 Gas cylinder restraining Within the cabinet a suitable system shall be installed to prevent gas cylinders from falling over. The system shall be suitable for the quantity an
35、d dimensions of cylinders, which can be used in accordance with the users instruction manual. 5.4 Insertion and removal of pressurised gas cylinders The cabinet shall be constructed so that cylinders can be inserted and removed as safely as possible with minimum manual effort. For example, when cabi
36、net bases are above floor level a ramp and/or mechanical lifting equipment can be employed, however, these shall not be made of aluminium. 5.5 Installation of gas pipelines (for gas cylinders in use) The number of pipe penetrations through the wall or roof of the cabinet shall be restricted to the m
37、inimum necessary and a maximum of 3 for each cylinder. Unused holes/penetrations shall be sealed in accordance with the users instruction manual. The three holes should have a maximum diameter of 10 mm each. NOTE In order to maintain the fire resistance as tested and specified in accordance with Ann
38、ex A (see A.4.1), it is recommended that the pipes are made from stainless steel or from a material of similar thermal conductivity. 5.6 Installation of electric cables (where appropriate) The number of penetrations through the wall or roof of the cabinet shall be restricted to the minimum necessary
39、 and a maximum of 2 for each cylinder. Unused holes/penetrations shall be sealed in accordance with the users instruction manual. The two holes should be a maximum diameter of 20 mm each. 6 Fire resistance The fire resistance of the cabinet for storing pressurised gas cylinders shall be determined b
40、y a type test. This type test is performed by heating the cabinet in a furnace according to the time-temperature curve described in clause 5.1.1 of EN 1363-1:1999 and measuring the temperature increase on the surface of an empty gas cylinder within the cabinet. The temperature increase on the surfac
41、e of the cylinder valve spanner flat (see Figure A.1) shall not exceed 50 K. Test details are given in Annex A. 7 Information to be supplied The cabinet manufacturer shall supply with the cabinet a user information manual, which includes at least the following: a) instructions for correct cabinet in
42、stallation; b) maximum combined volumetric capacity of the gas cylinders stored within the cabinet; c) safety procedure instructions in the event of fire, particularly the minimum time, when after a fire, the doors can be safely opened; d) instructions concerning the effect of gas pipes passing thro
43、ugh (penetration of) the walls and roof of the cabinet, particularly the potential of reduced fire resistance; e) instructions to correctly seal the unused gas pipe feeds through the cabinet (penetration to the cabinets walls and roof); f) warning that storing corrosive gases will adversely affect t
44、he effectiveness of the inlet and exhaust closing mechanisms; EN 14470-2:2006 (E) 8 g) instructions to check that installation of the ventilation system, if carried out, is correctly realised (for example by using a smoke tube); h) recommendation to undertake regular inspection and maintenance; i) s
45、uppliers declaration of conformity or the certificate(s) of conformity of a test house. 8 Manufacturers marking and labelling The following which should be a legible size, shall be fixed in a visible position and on the front of the cabinet: a) fire resistance class, specified in minutes, e.g. Type
46、G15, G30, G60 or G90; b) instruction that the door(s) shall be kept closed; c) safety sign in accordance with ISO 3864 as warning of pressurised gas cylinders; d) name and/or trademark of the manufacturer; e) model number, year of construction and, if appropriate, serial number; f) marking of the in
47、let and exhaust connections to differentiate between them; g) advice to read the user instruction manual. EN 14470-2:2006 (E) 9 Annex A (normative) Type G testing to determine fire resistance A.1 Principle The safety cabinet is exposed to flames in a suitable furnace so that a standard time-temperat
48、ure curve is generated as specified in clause 5.1.1 of EN 1363-1:1999. The temperature increase, and the time taken until the temperature increase reaches 50 K as measured on the surface of the valve spanner flat on the empty gas cylinder valve, shall be recorded. NOTE The fire resistance of cabinet
49、s storing pressurised gas cylinders (EN 14470-2) is not comparable with the fire resistance of cabinets to store flammable liquids (EN 14470-1) due to the different methods of measuring the temperatures involved in determining the “time taken for T to rise” see Table 1. A.2 Testing apparatus and test methods A.2.1 Furnace The furnace shall be arranged so that the doors, walls, roof and floor of the tested cabinet receive equal heat conditions but without flames directly touching the cabinet body. A.2.2 Measuring equipment Measuring equi
