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1、? Reference number ISO 13463:1999(E) ISO 1999 INTERNATIONAL STANDARD ISO 13463 First edition 1999-09-15 Nuclear-grade plutonium dioxide powder for fabrication of light water reactor MOX fuel Guidelines to help in the definition of a product specification Poudre de dioxyde de plutonium de qualit nucl
2、aire en vue de la fabrication de combustible MOX pour racteur eau lgre Guide daide la dfinition dune spcification de produit ISO 13463:1999(E) ISO 1999 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic o
3、r mechanical, including photocopying 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 22 734 10 79 E-mail copyrightiso.ch Web
4、 www.iso.ch Printed in Switzerland ii ISO 1999 All rights reserved 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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7、e inform the Central Secretariat at the address given below. ISO 13463:1999(E) ISO 1999 All rights reservediii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards i
8、s 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 non-governmental, in liaison with ISO, also take par
9、t 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, Part 3. Draft International Standards adopted by the
10、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 casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of p
11、atent rights. ISO shall not be held responsible for identifying any or all such patent rights. InternationalStandardISO 13463waspreparedbyTechnicalCommitteeISO/TC 85,Nuclearenergy, Subcommittee SC 5,Nuclear fuel technology. ISO 13463:1999(E) iv ISO 1999 All rights reserved Introduction Plutonium rec
12、ycling in the form of mixed uranium and plutonium oxide based fuel (MOX fuel) has become an industrial reality. This plutonium cannot be considered as a standard product because the possibility of recycling the oxide powder produced by the reprocessing of spent fuels (plutonium dioxide mixed or not
13、with uranium) depends on numerous factors: its fabrication process; the MOX fuel fabrication process; the safety constraints applied to these processes; the characteristics of the reprocessed spent fuel (initial enrichment, burn-up rate, etc.). As it cannot be considered a standard product, the plut
14、onium consequently cannot form the subject of general supply specifications, as is the case for uranium. The development of the use of this type of fuel nevertheless makes it worthwhile to draw-up a standard which defines certain minimum properties to be complied with by the oxide powder and which r
15、ecommends both the seller and purchaser to reach agreement concerning a certain number of parameters which it will be advisable to specify. This International Standard meets this need for the plutonium dioxide power. INTERNATIONAL STANDARDISO 13463:1999(E) ISO 1999 All rights reserved1 Nuclear-grade
16、 plutonium dioxide powder for fabrication of light water reactor MOX fuel Guidelines to help in the definition of a product specification 1Scope This International Standard applies to nuclear-grade plutonium dioxide powder (PuO2), for fabrication of light water reactor MOX fuel. It defines minimal r
17、equirements for the product, quality assurance and quality control. It can be modified or amended once the powder supplier and the MOX fuel fabricator agree. This International Standard sets, in that respect, guidelines for the definition of a product specification. 2Normative references The followi
18、ng normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International S
19、tandard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International
20、Standards. ISO 9002:1994,Quality systems Model for quality assurance in production, installation and servicing. ASTM C1233,Practice for determining equivalent boron contents of nuclear materials. 3General requirements 3.1 Quality assurance The supplier shall establish a quality assurance system in a
21、ccordance with ISO 9002, or equivalent. In that respect, the following principles shall be respected. Plutonium dioxide shall be produced with a qualified process, that is to say, in accordance with ISO 9002. Qualification shall encompass the powder fabrication process itself (homogenization, condit
22、ioning, etc.) but also the powder sampling process and characterization methods. A product quality plan shall be established, it shall contain at least the following information: a fabrication description including the list and values of the important parameters regarding the quality of the finished
23、 product; a description for on-line inspection methods and for analytical determination (equipment, measurement principle and related statistical characteristics). ISO 13463:1999(E) 2 ISO 1999 All rights reserved 3.2 Sampling 3.2.1PuO2powder lot A lot is defined as a quantity of material that is uni
24、form in isotopic, chemical and physical characteristics and free from foreign material. 3.2.2Sample size Each powder lot shall be represented by a test sample. Traceability between the PuO2powder lot and the sample shall be maintained. The recommended sample size shall be 10 g. 3.3 Packaging Each Pu
25、O2powder lot shall be packaged in containers ensuring material confinement. Each container shall have a unique reference number. Traceability between the different containers of each lot and the sample on which analytical determination are performed shall be maintained. 3.4 Documentation For each lo
26、t, the following documents shall be provided: a conditioning certificate identifying the different containers of the lot; a record of all data from tests and analytical determination; a declaration of conformity of the PuO2powder lot. ISO 13463:1999(E) ISO 1999 All rights reserved3 4Material charact
27、eristics The limits given in Table 1 refer to the reference date (date of sampling if not agreed otherwise). This date is mentioned on the analysis record. Determinations are performed on raw powder. Table 1 Material characteristics Material characteristicsUnitLimit Mass fraction of plutoniummass pe
28、rcentageW 86,0 Pu isotopic composition 238Pu 239Pu 240Pu 241Pu 242Pu mass percentage reported on a Pu basis value to be reported value to be reported W 5,1 value to be reported value to be reported Mass fraction of americium 241gg?1Puvalue to be reported Mass fraction of uraniumgg?1Puvalue to be rep
29、orted (give isotopic composition if U W 0,5 %) Total activity of fission products isotopes to be taken into account: 95Zr,95Nb,103Ru,106Ru,137Cs,144Ce Bqg?1Puu 296 000 Thermal powerWkg?1Puvalue to be reported Residual moisturemass percentagevalue to be reported Surface aream2g?1u 30 W 2 ISO 13463:19
30、99(E) 4 ISO 1999 All rights reserved 5Impurities 5.1 Total impurities The limits given in Tables 2 and 3 refer to the reference date (date of sampling if not agreed otherwise). Determinations are performed on raw powder. Table 2 Impurities (requirements) Values in micrograms per gram of plutonium Im
31、puritiesLimit Agu 100 Alu 150 Bvalue to be reported Cu 500 Cau 250 Cdvalue to be reported Cl + Fu 250 Cou 100 Cru 200 Cuu 100 Dyvalue to be reported Euvalue to be reported Feu 500 Gdvalue to be reported Livalue to be reported Mgu 200 Niu 200 Siu 200 Smvalue to be reported Snu 100 Vu 300 ISO 13463:19
32、99(E) ISO 1999 All rights reserved5 Table 3 Impurities (options) Values in micrograms per gram of plutonium ImpuritiesLimit Bivalue to be reported Invalue to be reported Mnvalue to be reported Movalue to be reported Nvalue to be reported Navalue to be reported Pbvalue to be reported Thvalue to be re
33、ported Tivalue to be reported Znvalue to be reported Wvalue to be reported The total of the impurities mentioned in Tables 2 and 3 shall not exceed 5 000 gg?1Pu. 5.2 Neutron-absorbing impurities The equivalent-boron mass fraction (wEB) of each lot shall be calculated taking into account the followin
34、g elements: B, Gd, Sm, Eu, Cd, Li, Dy. The equivalent-boron factors of the above-mentioned elements are those of ASTM C 1233. Determine wEB, expressed in micrograms per gram, from the following formula: x x x wFw? EB,EB where wEBis the equivalent-boron mass fraction, expressed in micrograms per gram
35、; FEB,xis the equivalent-boron factor, for element x; wxis the mass fraction of element x, expressed in micrograms per gram of plutonium. Protocol to be implemented if elements are measured at their detection limit should be established upon agreement between the powder supplier and the MOX fuel fabricator. wEBshall not exceed 10 gg?1. ISO 13463:1999(E) 6 ISO 1999 All rights reserved Bibliography EN 10204:1991 (amended in 1995),Metallic products Types of inspection documents. ISO 13463:1999(E) ICS 27.120.30 Price based on 6 pages ISO 1999 All rights reserved
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