ISO-14624-5-2006.pdf
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1、 Reference number ISO 14624-5:2006(E) ISO 2006 INTERNATIONAL STANDARD ISO 14624-5 First edition 2006-04-15 Space systems Safety and compatibility of materials Part 5: Determination of reactivity of system/component materials with aerospace propellants Systmes spatiaux Scurit et compatibilit des matr
2、iaux Partie 5: Dtermination de la ractivit des matriaux des systmes/composants avec les ergols spatiaux ISO 14624-5:2006(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 t
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5、ikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2006 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 p
6、hotocopying and microfilm, without permission in writing 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
7、Switzerland ii ISO 2006 All rights reserved ISO 14624-5:2006(E) ISO 2006 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references. 1 3 Terms and definitions. 1 4 Fluid transfer, storage, and flight systems 2 4.1 General. 2 4.2 Test criteria 2 4.3 Sample . 3
8、 4.4 Test system . 3 4.5 Procedure 4 4.6 Precision 6 4.7 Good laboratory practices. 6 Annex A (informative) Example forms . 7 Bibliography. 11 -,-,- ISO 14624-5:2006(E) iv ISO 2006 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of nati
9、onal standards bodies (ISO member bodies). 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. Internat
10、ional organizations, governmental and non-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 ru
11、les given in the ISO/IEC Directives, Part 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
12、 least 75 % of the member bodies casting 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 14624-5 was prepared by Technical Committee ISO/
13、TC 20, Aircraft and space vehicles, Subcommittee SC 14, Space systems and operations. ISO 14624 consists of the following parts, under the general title Space systems Safety and compatibility of materials: Part 1: Determination of upward flammability of materials Part 2: Determination of flammabilit
14、y of electrical-wire insulation and accessory materials Part 3: Determination of offgassed products from materials and assembled articles Part 4: Determination of upward flammability of materials in pressurized gaseous oxygen or oxygen- enriched environments Part 5: Determination of reactivity of sy
15、stem/component materials with aerospace propellants Part 6: Determination of reactivity of processing materials with aerospace fluids Part 7: Determination of permeability and penetration of materials to aerospace fluids ISO 14624-5:2006(E) ISO 2006 All rights reserved v Introduction This purpose of
16、 this part of ISO 14624 is to identify changes resulting from exposure of a material to an aerospace fluid that renders either the material or the fluid unsuitable for use. -,-,- INTERNATIONAL STANDARD ISO 14624-5:2006(E) ISO 2006 All rights reserved 1 Space systems Safety and compatibility of mater
17、ials Part 5: Determination of reactivity of system/component materials with aerospace propellants 1 Scope This part of ISO 14624 specifies test equipment and techniques used to identify interactions resulting from exposure of a material to an aerospace fluid. This part of ISO 14624 may be used to de
18、termine the reactivity of system and component materials with aerospace fluids. It is applicable for determining interactive reactions between propellants and materials used in the design, construction, and operation of propellant storage, transfer, and flight systems. While this procedure is an exc
19、ellent quick screen test for long-term propellant compatibility, it is semi-qualitative, and (if exposures exceed 12 months) long-term tests need to be used to quantify degradation as a function of time under use conditions. 2 Normative references The following referenced documents are indispensable
20、 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 4954:1993, Steels for cold heading and cold extruding ISO 14951-3, Space systems Fluid characteri
21、stics Part 3: Nitrogen 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 degradation adverse physical or chemical change in a substance 3.2 immersion test test in which the fluid covers the entire sample for the duration of the test 3.3 propell
22、ants fluids, such as hydrazine and monomethylhydrazine, and oxidizers usually used for space projects 3.4 reaction chemical change in which a substance decomposes, combines with other substances, or interchanges constituents with other substances -,-,- ISO 14624-5:2006(E) 2 ISO 2006 All rights reser
23、ved 4 Fluid transfer, storage, and flight systems 4.1 General 4.1.1 Procedure This procedure is applicable for determining interactive reactions between propellants and materials used in the design, construction, and operation of propellant storage, transfer, and flight systems. The sample is immers
24、ed in the test fluid for 48 h at the maximum system temperature or 71 C (160 F), whichever is higher. This accelerated test provides semi-qualitative information. Tests used to evaluate the long-term interaction of materials with reactive fluids shall be conducted for a period of time no less than t
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