1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-21103-5 SANS 14520-12:2008 Edition 2 ISO 14520-12:2005 Edition 2SOUTH AFRICAN NATIONAL STANDARD Gaseous fire-extinguishing systems Physica
4、l properties and system design Part 12: IG-01 extinguishant This national standard is the identical implementation of ISO 14520-12:2005 and is adopted with the permission of the International Organization for Standardization. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private
5、Bag X191 Pretoria 0001 Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS This standard may only be used and printed by approved subscription and freemailing clients of the SABS.SANS 14520-12:2008 Edition 2 ISO 14520-12:2005 Edition 2 Table of changes Change No. Date Scope National forewo
6、rd This South African standard was approved by National Committee SABS SC 21C, Fire safety Fixed fire detection and extinguishing systems, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in September
7、2008. This SANS document supersedes SABS ISO 14520-12:2000 (edition 1). This standard may only be used and printed by approved subscription and freemailing clients of the SABS. Reference number ISO 14520-12:2005(E) ISO 2005INTERNATIONAL STANDARD ISO 14520-12 Second edition 2005-12-15 Gaseous fire-ex
8、tinguishing systems Physical properties and system design Part 12: IG-01 extinguishant Systmes dextinction dincendie utilisant des agents gazeux Proprits physiques et conception des systmes Partie 12: Agent extincteur IG-01 SANS 14520-12:2008This standard may only be used and printed by approved sub
9、scription and freemailing clients of the SABS.ISO 14520-12:2005(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed
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12、e inform the Central Secretariat at the address given below. ISO 2005 All rights reserved. Unless otherwise specified, 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
13、from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2005 All rights reservedSANS 14520-12:
14、2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 14520-12:2005(E) ISO 2005 All rights reserved iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodie
15、s). The work of preparing International Standards is normally carried out through ISO 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 n
16、on-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Pa
17、rt 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies castin
18、g a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 14520-12 was prepared by Technical Committee ISO/TC 21, Equipment for fire protection a
19、nd fire fighting, Subcommittee SC 8, Gaseous media and firefighting systems using gas. This second edition cancels and replaces the first edition (ISO 14520-12:2000), which has been technically revised. ISO 14520 consists of the following parts, under the general title Gaseous fire-extinguishing sys
20、tems Physical properties and system design: Part 1: General requirements Part 2: CF 3 I extinguishant Part 5: FK-5-1-12 extinguishant Part 6: HCFC Blend A extinguishant Part 8: HFC 125 extinguishant Part 9: HFC 227ea extinguishant Part 10: HFC 23 extinguishant Part 11: HFC 236fa extinguishant Part 1
21、2: IG-01 extinguishant Part 13: IG-100 extinguishant Part 14: IG-55 extinguishant Part 15: IG-541 extinguishant Parts 3, 4 and 7, which dealt with FC-2-1-8, FC-3-1-10 and HCFC 124 extinguishants, respectively, have been withdrawn, as these types are no longer manufactured. SANS 14520-12:2008This sta
22、ndard may only be used and printed by approved subscription and freemailing clients of the SABS.SANS 14520-12:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.INTERNATIONAL STANDARD ISO 14520-12:2005(E) ISO 2005 All rights reserved 1 Gaseous
23、 fire-extinguishing systems Physical properties and system design Part 12: IG-01 extinguishant 1 Scope This part of ISO 14520 gives specific requirements for gaseous fire-extinguishing systems, with respect to the IG-01 extinguishant. It includes details of physical properties, specification, usage
24、and safety aspects and is applicable to systems operating at nominal pressures of 160 bar, 200 bar and 300 bar at 15 C. This does not preclude the use of other systems; however, design data for other pressures were not available at time of publication. 2 Normative references The following referenced
25、 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. ISO 14520-1: 1) , Gaseous fire-extinguishing systems Physical properties
26、and system design Part 1: General requirements 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 14520-1 apply. 4 Characteristics and uses 4.1 General Extinguishant IG-01 shall comply with the specification according to Table 1. IG-01 is a colourless,
27、almost odourless, electrically non-conductive gas at ambient (20 C) temperature, with a density approximately 1,4 times that of air. The physical properties are given in Table 2. IG-01 extinguishes fires mainly by a reduction of the oxygen concentration in the atmosphere of the hazard enclosure. 1)
28、To be published. (Revision of ISO 14520-1:2000) SANS 14520-12:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 14520-12:2005(E) 2 ISO 2005 All rights reservedTable 1 Specification for IG-01 Property Requirement Purity 99,9 % by volume, m
29、in. Water content 50 10 6 by mass, max. Suspended matter or sediment None visible Table 2 Physical properties of IG-01 Property Unit Value Molecular mass 39,9 Boiling point at 1,013 bar (absolute) aC 185,9 Freezing point C 189,4 Critical temperature C 122,3 Critical pressure bar abs a49,0 Critical v
30、olume cm 3 /mol Critical density kg/m 3536 Vapour pressure 20 C bar abs a Liquid density 20 C kg/m 3 Saturated vapour density 20 C kg/m 3 Specific volume of superheated vapour at 1,013 bar and 20 C m 3 /kg 0,602 Chemical formula Ar Chemical name Argon a1 bar = 0,1 MPa = 10 5Pa; 1 MPa = 1 N/mm 2 . 4.
31、2 Use of IG-01 systems IG-01 total flooding systems may be used for extinguishing fires of all classes within the limits specified in ISO 14520-1: 2) , Clause 4. The extinguishant requirements per volume of protected space are shown in Table 3 for various levels of concentration. These are based on
32、methods given in ISO 14520-1 2) , 7.6. The extinguishing concentrations and design concentrations for heptane and Surface Class A hazards are given in Table 4, while inerting concentrations are given in Table 5. 2) To be published. (Revision of ISO 14520-1:2000) SANS 14520-12:2008This standard may o
33、nly be used and printed by approved subscription and freemailing clients of the SABS.ISO 14520-12:2005(E) ISO 2005 All rights reserved 3 Table 3 IG-01 total flooding quantity IG-01 volume requirements per unit volume of protected space, V/V (m 3 /m 3 ) This information refers only to IG-01, and may
34、not represent any other products containing argon as a component. Temperature T Specific vapour volume S Design concentration (by volume) C m 3 /kg 34 % 38 % 42 % 46 % 50 % 54 % 58 % 62 % 40 0,4790 0,522 0,601 0,685 0,775 0,872 0,976 1,091 1,217 35 0,4893 0,511 0,588 0,671 0,758 0,853 0,956 1,068 1,
35、191 30 0,4996 0,501 0,576 0,657 0,743 0,836 0,936 1,046 1,167 25 0,5098 0,491 0,565 0,644 0,728 0,819 0,917 1,025 1,143 20 0,5201 0,481 0,554 0,631 0,714 0,803 0,899 1,005 1,120 15 0,5304 0,472 0,543 0,619 0,700 0,787 0,882 0,985 1,099 10 0,5406 0,463 0,533 0,607 0,686 0,772 0,865 0,966 1,078 5 0,55
36、09 0,454 0,523 0,596 0,674 0,758 0,849 0,948 1,058 0 0,5612 0,446 0,513 0,585 0,661 0,744 0,833 0,931 1,038 5 0,5715 0,438 0,504 0,574 0,649 0,731 0,818 0,914 1,020 10 0,5817 0,430 0,495 0,564 0,638 0,718 0,804 0,898 1,002 15 0,5920 0,423 0,486 0,554 0,627 0,705 0,790 0,883 0,984 20 0,6023 0,416 0,4
37、78 0,545 0,616 0,693 0,777 0,868 0,968 25 0,6126 0,409 0,470 0,536 0,606 0,682 0,764 0,853 0,951 30 0,6228 0,402 0,462 0,527 0,596 0,670 0,751 0,839 0,936 35 0,6331 0,395 0,455 0,518 0,586 0,659 0,739 0,825 0,920 40 0,6434 0,389 0,448 0,510 0,577 0,649 0,727 0,812 0,906 45 0,6536 0,383 0,440 0,502 0
38、,568 0,639 0,716 0,799 0,892 50 0,6639 0,377 0,434 0,494 0,559 0,629 0,704 0,787 0,878 55 0,6742 0,371 0,427 0,487 0,550 0,619 0,694 0,775 0,864 60 0,6845 0,366 0,421 0,479 0,542 0,610 0,683 0,763 0,851 65 0,6947 0,360 0,414 0,472 0,534 0,601 0,673 0,752 0,839 70 0,7050 0,355 0,408 0,465 0,526 0,592
39、 0,663 0,741 0,827 75 0,7153 0,350 0,403 0,459 0,519 0,584 0,654 0,730 0,815 80 0,7256 0,345 0,397 0,452 0,511 0,575 0,645 0,720 0,803 85 0,7358 0,340 0,391 0,446 0,504 0,567 0,636 0,710 0,792 90 0,7461 0,335 0,386 0,440 0,497 0,560 0,627 0,700 0,781 95 0,7564 0,331 0,381 0,434 0,491 0,552 0,618 0,6
40、91 0,770 100 0,7666 0,326 0,376 0,428 0,484 0,545 0,610 0,682 0,760 V/V is the agent volume requirement (in cubic metres per cubic metre); i.e. the quantity Q (in cubic metres) of agent required at a reference temperature of 20 C and a pressure of 1,013 bar per cubic metre of protected volume to pro
41、duce the indicated concentration at the temperature specified: RR Qm S = where S Ris the specific reference volume ( in cubic metres per kilogram); i.e. the specific vapour volume at the filling reference temperature for superheated IG-01 vapour at a pressure of 1,013 bar which may be approximated b
42、y the formula: R12R SkkT =+ where k 1= 0,561 19; k 2= 0,002 054 5; T Ris the reference temperature (in degrees Celsius); i.e. filling temperature (20 C in the table); 100 In 100 - V m Sc = V is the net volume of hazard (in cubic metres); i.e. the enclosed volume minus the fixed structures impervious
43、 to extinguishant; T is the temperature (in degrees Celsius); i.e. the design temperature in the hazard area; S is the specific volume (in cubic metres per kilogram); the specific volume of superheated IG-01 vapour at a pressure of 1,013 bar may be approximated by 12 SkkT =+ c is the concentration (
44、in percent); i.e. the volumetric concentration of IG-01 in air at the temperature indicated, and a pressure of 1,013 bar absolute. SANS 14520-12:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.ISO 14520-12:2005(E) 4 ISO 2005 All rights rese
45、rvedTable 4 IG-01 reference extinguishing and design concentrations Fuel Extinguishment % by volume Minimum design % by volume Class B Heptane (cup burner) Heptane (room test) 39,2 33,7 51,0 Surface Class A Wood crib PMMA PP ABS 30,7 31,6 31,6 32,2 41,9 Higher Hazard Class A a 48,4 The extinguishmen
46、t values for the Class B and the Surface Class A fuels are determined by testing in accordance with ISO 14520-1: 3) , Annexes B and C. The minimum design concentration for the Class B fuel is the higher value of the heptane cup burner or room test heptane extinguishment concentration multiplied by 1
47、,3. The minimum design concentration for Surface Class A fuel is the highest value of the wood crib, PMMA, PP or ABS extinguishment concentrations multiplied by 1,3. In the absence of any of the 4 extinguishment values, the minimum design concentration for Surface Class A shall be that of Higher Haz
48、ard Class A. See ISO 14520-1: 3) , 7.5.1.3, for guidance on Class A fuels. The extinguishing and design concentrations for room-scale test fires are for informational purposes only. Lower and higher extinguishing concentrations than those shown for room-scale test fires may be achieved and allowed w
49、hen validated by test reports from internationally recognized laboratories.aThe minimum design concentration for Higher Hazard Class A fuels shall be the higher of the Surface Class A or 95 % of the Class B minimum design concentration. Table 5 IG-01 inerting and design concentrations Fuel Inertion % by volume Minimum design % by volume Methane 55,8 61,4 Inerting concentrations derived in accordance with ISO 14520-1: 3) , Annex D and 7.5.2. 3) T
