I NTERNATI ONAL STANDARD i s0 7201 1 Second edi ti on 1 989 1 2 1 5 Fi re protection Fi re extinguishing medi a Hal ogenated hydrocarbons Part 1 Speci fi cati ons for hal on 1 21 1 and halon 1 301 Pro[.]
INTERNATIONAL STANDARD is0 7201 -1 Second edition 989-1 2-1 Fire protection - Fire extinguishing media Halogenated hydrocarbons Part : Specifications for halon 21 and halon 301 Protection contre l’incendie - Agents extincteurs - Hydrocarbures halog&& Partie : Spkifkations pour les halons 21 et 301 - Reference number IS0 7201 -l : 989 (E) IS0 7201 -I : 989 (E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies) The work of preparing International Standards is normally carried out through IS0 technical committees Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the IS0 Council They are approved in accordance with IS0 procedures requiring at least 75 % approval by the member bodies voting International Standard IS0 7201 -I was prepared by Technical Committee ISO/TC 21 , Equipment for fire protection and fire fighting This second edition cancels and replaces the first edition (IS0 7201 : 9821 , which has been technically revised At present, IS0 7201 consists of the following part, under the general title Fireprotection - Fire extinguishing media - Halogenated hydrocarbons : - Part : Specifications for halon 21 and halon 307 Annex A of this part of IS0 7201 is for information only IS0 999 All rights reserved No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher International Organization for Standardization Case postale 56 l CH-1 21 Gen??ve20 l Switzerland Printed in Switzerland ii I S0 7201 - I : 999 (El I ntroducti on Th i s I n tern ati on al Stan d ard medi a i n common poses Th ese speci fi cati on s at l east a mi n i mu m u sefu l sol d for fi re exti n gu i sh i n g Requ i remen ts I n tern ati on al for i s on e of a seri es gi vi ng u se an d wh i ch med i a are i n n eed are d esi g n ed speci fi cati on s of stan dardi zati on to establ i sh fi re exti n gu i sh i n g capabi l i ty that for fi re exti n gu i sh i n g for fi re fi gh ti ng th e med i u m an d can th erefore i n qu esti on pu rh as be reason abl y pu rposes u sed i n parti cu l ar eq u i pmen t wi l l form th e su bj ect of fu tu re Stan dards iii IS0 7201 -I : 999 (E) INTERNATIONALSTANDARD Fire protection - Fire extinguishing media - Halogenated hydrocarbons Part : Specifications for halon 21 and halon 301 Scope This part of IS0 7201 specifies requirements for the following halogenated hydrocarbons for use as fire extinguishing media : a) halon 21 [bromochlorodifluoromethane (CF,CIBr)l; b) halon 301 [bromotrifluoromethane (CFsBr)] This part of IS0 7201 does not deal with the conditions of use of these products in fire fighting equipment Such equipment (portable fire extinguishers, fixed installations, etc.) will be dealt with in future International Standards Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of IS0 7201 At the time of publication, the editions indicated were valid All standards are subject to revision, and parties to agreements based on this part of IS0 7201 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below Members of IEC and IS0 maintain registers of currently valid International Standards IS0 3363 : 976, Fluorochlorinated hydrocarbons for industrial use - Determination of acidity - Titrimetric method IS0 3427 : 976, Gaseous halogenated hydrocarbons (liquified gases1 - Taking of a sample IS0 5769 : 979, Fluorinated hydrocarbons for industrial use Determination of non-volatile residue halon : A halogenated hydrocarbon used as a fire extinguishing medium NOTE - The following numbering system is used to identify halons The word “halon” is followed by a number, usually of four digits, giving, in turn, the number of carbon, fluorine, chlorine and bromine atoms Terminal zeros are omitted Thus halon 21 is bromochlorodifluorobromomethane (CF&IBr) and halon 301 is bromotrifluoromethane (CFsBr) Requirements Halons 21 and 301 shall comply with the requirements of table , when tested by the appropriate method of test specified in clause Table - Requirements Property Purity, % (mol/mol) Acidity, ppm by mass, max Water content, ppm by mass, max Non-volatile residue, % hlml max Halogen ion Suspended matter or sediment Requirements Halon 21 Halon 301 99,0 38 99,6 3,o 20 10 0,Ol Passes test 0,Ol Passes test None visible None visible Definition Sampling For the purpose of this part of IS0 7201 , the following definition applies Samples of halons shall be taken from the manufacturer’s shipping container using the method specified in IS0 3427.1 ) ) The sampling bottle should be capable of safely resisting the vapour pressure of the sample at the highest temperature that could be encountered I S0 7201 - I : 989 Meth ods of (El 6 test Hal og en i ons Mi x g of th e sampl e wi th Gen eral i ng several ( Ag NOs) For al l tests, th e sampl e shal l be taken from th e l i qu i d ph ase Puri ty gen eral l y th e pu ri ty accepted by gas- l i qu i d l aboratory ch romatog raph y, or preci pi tati on Su spen d ed exhi bi t ni trate no tu r- or sedi ment ph ase of th e sampl e Packag i n g th e aci di ty by th e appropri ate meth od speci fi ed in wi l l H al on s n ot vi su al l y an d l abel l i ng shal l al ter th e be sh i pped med i u m an d stored i n tai n ers or be detri mental l y affected wh i ch by i t 3353 Water content Determi n e meth od th e water ten t or by an y oth er Non- vol ati l e Determi n e 5789 meth od by th e gi vi ng orth odox equ i val en t Karl resi du e by th e meth od shal l may need to compl y wi th be marked wi th nati onal th e regul ati ons fol l owi ng i nfor- : Fi sch er resu l ts resi du e th e n on- vol ati l e The contai ners Con tai n ers mati on I S0 shal l of si l ver h al i de matter th e l i qu i d sol u ti on tai n - si l ver tech n i qu es N OTE - resu l ti n g meth an ol meth an ol i c Aci di ty Determi n e satu rated u si n g I S0 ml of absol u te a Th e bi di ty of sol u ti on Exami n e Determi n e d rops speci fi ed in a) su ppl i er’ s b) “H al on n ame an d address; 21 ” c) packag e d) th e e) recommen d ed or “H al on i denti fi cati on n u mber of thi s ”, n u mber; part of I S0 storag e as appropri ate; 7201 , precau ti on s i e I S0 7201 - I ; IS0 7201 -I : 989 (E) Annex A (informative) General A.1 Physical properties Halon 21 is a colourless, faintly-smelling gas Halon 301 is an odourless gas A number of their other more important physical properties are given in table A.1 A.2 Electrical conductivity Halons 21 and 301 have a very low electrical conductivity In many cases they can be used to extinguish fires involving live electrical equipment, but this, to a significant extent, may depend on the circumstances, particularly the method of discharge In case of doubt, reference should be made to the instructions on the fire extinguishing equipment to be used properties Table A.1 - Physical properties Property Relative molecular mass Boiling point at ,01 bar*, T Freezing point, OC Critical temperature, OC Critical pressure, bar Critical volume, ms/kg Critical density, kg/m3 Vapour pressure at 20 ‘T, bar at 60 “C, bar Liquid density at 20 T, kg/& Saturated vapour density at 20 T, kg/m3 Specific volume of superheated vapour at ,01 bar and 20 T, ms/ kg bar = 05 Pa l of halons 21 and 301 Halon 21 1 65.38 -4,0 - 60,5 53,8 42,06 0,001 41 71 Halon 301 MB.93 - 57.8 - 68.0 67,0 39,6 0,001 34 745 2,53 7.20 830 4,63 34,58 575 7.4 0,1 45 1 5.6 0,1 59 I S0 UDC 7201 -I : 989 (E) 81 842 81 Descri ptors : fi re : 861 723 protecti on, Pri ce based on oaaes fi re exti ngui shi ng i nstal l ati ons, hydrocarbons, hal ohydrocarbons, speci fi cati ons, safety, tests