1、ANSI! ANS-57 .8-1995 fuel assembly identification This standard has been reviewed and reaffirmed by the ANS Nuclear Facllilles Standards Committee (NFSC) with the recognition that it may reference other standards and documents that may have been superceded or withdrawn. The requirements of thIS docu
2、ment will be met by uSing the version of the standards and documents referenced herein It IS the responsibility of the user to review each of the references and to determine whether the use of the onglnal references or more recent versions is appropriate for the facility. Varlallons from the standar
3、ds and documents referenced in thIS standard should be evaluated and documented This standard does not necessarily reflect recent industry initiatIVes for rISk informed declslOn-makmg or a graded approach to quality assurance. Users should consider the use of these industry mitlatlVes in the applica
4、tion of thIS standard. Secretariat American Nuclear Society Prepared by the American Nuclear Society Standards Committee Working Group ANS-57.8 Published by the American Nuclear Society 555 North Kensington Avenue La Grange Park, Dlinois 60526 USA Approved April 6, 1995 by the American National Stan
5、dards Institute, Inc. ANSI! ANS-57 .8-1995 American National Standard Fuel Assembly Identification I JA_W _1_ 22_00_5 -.11 -“ i -=_J American National Standard Designation of this document as an American National Standard attests that the principles of openness and due process have been followed in
6、the approval procedure and that a consensus of those directly and materially affected by the standard has been achieved. This standard was developed under procedures of the Standards Committee of the American Nuclear Society; these procedures are accredited by the Amer ican National Standards Instit
7、ute, Inc., as meeting the criteria for American National Standards. The consensus committee that approved the standard was balanced to ensure that competent, concerned, and varied interests have had an opportunity to participate. An American National Standard is intended to aid industry, consumers,
8、governmental agencies, and general interest groups. Its use is entirely volun tary. The existence of an American National Standard, in and of itself, does not preclude anyone from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standard. By pUb
9、lication of this standard, the American Nuclear Society does not insure anyone utilizing the standard against liability allegedly arising from or after its use. The content of this standard reflects acceptable practice at the time of its approval and pUblication. Changes, if any, occurring through d
10、evelop ments in the state of the art, may be considered at the time that the standard is subjected to periodic review. It may be reaffirmed, revised, or withdrawn at any time in accordance with established procedures. Users of this standard are cautioned to determine the validity of copies in their
11、possession and to establish that they are of the latest issue. The American Nuclear Society accepts no responsibility for interpretations of this standard made by any individual or by any ad hoc group of individuals. Requests for interpretation should be sent to the Standards Department at Society H
12、eadquarters. Action will be taken to provide appropriate response in accordance with established procedures that ensure consensus on the inter pretation. Comments on this standard are encouraged and should be sent to Society Headquarters. Published by American Nuclear Society 555 North Kensington Av
13、enue La Grange Park, Illinois 60526 USA Copyright 1995 by American Nuclear Society. All rights reserved. Any part of this standard may be quoted. Credit lines should read “Extracted from American National Standard ANSIJANS-57.8-1995 with permission of the publisher, the American Nuclear Society.“ Re
14、production prohibited under copyright convention unless written permission is granted by the American Nuclear Society. Printed in the United States of America I I Foreword (This Foreword is not a part of American National Standard Fuel Assembly Identification, ANSIIANS-57.8-1995.) This standard desc
15、ribes a system for the unique identification of nuclear fuel assemblies. This uniqueness is achieved by the assignment of the following to each fuel assembly: 1) a fabricator or facility identification prefix, and 2) a serial number. Although the standard was developed primarily for commercial light
16、-water reactor fuel, it may be used for any reactor fuel contained in discrete fuel assemblies that can be identified with a serial number as specified by the standard. The standard was originally developed to meet a need of the U.S. Atomic Energy Commis sion, now the U.S. Nuclear Regulatory Commiss
17、ion, for its Safeguards Program. Reporting and recordkeeping are necessary parts of this program. Because of the large volume of fuel needed to support commercial power reactors, a systematic method of fuel assembly identification is necessary to ensure that no two fuel assemblies manufactured in th
18、e United States have the same number; the reactor fuel can thus be accurately and expeditiously recorded. This standard provides such an identification system. This revised standard was developed by Working Group ANS-S7.B. Members at the time of its preparation were: R. H. Ripley, Chairman, Union El
19、ectric Company L. G. Ernst, Duke Power Company M. T. McKelvy, Southern Nuclear Operating Company W. J . Rawlings, Westinghouse Electric Corporation The American Nuclear Societys Nuclear Power Plant Standards Committee (NUPPSCO) had the following membership at the time of its approval of this standar
20、d: W. H. DArdenne, Chairman M. D. Weber, Secretary R. E. Allcn . UE the word “should“ denotes a recommendation; the word “may“ denotes permission, neither a requirement nor a recom mendation. 3. Fuel Assembly Identification Numbering System 3.1 Composition. Fuel assembly identifica tion shall be pro
21、vided through a six-character numbering system consisting of a prefix of two alphabetic characters, which identify the indi vidual fabrication facility, followed by a serial number consisting of four alphanumeric char acters. Definition and specification of the char acters are given in 3.1.1 through
22、 3.1.4 below. 3.1.1 Fabrication Facility Identification. The alphabetic characters for identification of the fabrication facility shall consist of the first two characters of the three-character code as signed to each fabrication facility by the United States Nuclear Regulatory Commission (NRC).l 3.
23、1.2 Serial Number. The combinations of four characters used for serial numbers shall be assigned without repetition to individual fuel assemblies by the fuel fabricator. The serial number shall be comprised of the characters specified in 3.1.3 and should be assigned in the sequence specified in 3.1.
24、4. 3.1.3 Serial Number Characters. The characters used for fuel assembly serial num bers shall be selected from the Arabic numerals o through 9 and letters of the English alphabet, except B, F, I, 0, Q, and Z; this provides 30 different characters. 3.1.4 Serial Number Sequence. The character combina
25、tions in the serial numbers should be assigned to fuel assemblies by the fuel fabricator using a base-30 numeri cal system. The numerical order of the 30 characters used in the base is the numerals from 0 through 9, followed by the letters defined in 3.1.3 as normally ordered from A through Y. The n
26、umber sequence in the base-30 numerical system is illustrated in tabular form in the Appendix for clarification and guidance. Pro gressing from 0000 through YYYY provides 810,000 combinations of characters for each fabrication facility. 3.2 Style of Characters. The style of char acters used for the
27、identification system shall 1 The code Jist appears in “Directory of Reporting Identification Symbols,“ available from the Office of Nuclear Materials Safety and Safeguards, USNRC, Washington, DC 20555. 1 Americlln Nlltional Standurd ANSIIANS-57.8-1995 be single-stroke gothic, vertical or microfont,
28、 capital letters, and numerals.2 The size and spacing of characters shall be as set forth in 3.4. 3.3 Method of Attachment. The identifi cation number shall be provided on the upper end fitting, nozzle, or other integral part of the fuel assembly. The number shall be provided by either casting, mach
29、ining, engraving, or using similar methods of marking, and shall appear either directly on the part or on a plate attached to the part by a metallurgical bond. The identification number shall not be provided on a plate or tag fastened to the assembly by a mechanical means. 3.4 Size and Location. The
30、 complete six character identification number shall be of uniform size and shall be provided at one principal location on each fuel assembly. The principal location and size of characters used shall be agreed upon by the fuel fabricator and the user, and shall provide readily accessible and legible
31、identification throughout the as semblys lifetime, consistent with the viewing system at the users facility. Other identification markings, such as those required for fabricator quality control or those provided for the users convenience, may be used; to avoid confusion, however, these ad ditional m
32、arkings shall not be located in the vicinity of the principal identification. 3.5 Arrangement. The characters in the identification number shall be arranged in line to read from left to right or from top to bottom when viewed in normal orientation, as indi cated below: EA12C5 or E A 1 2 C 5 In cases
33、 where sufficient surface area is not available to provide a complete uninterrupted set of characters, the characters may be grouped by separation of the fuel fabricators prefix from the serial number. This shall be the only permissible method of grouping. In cases of grouping, a hyphen shall not be
34、 introduced between the two groups, and the characters shall be maintained in a line, as shown below: EA 12C5 or E A 1 2 C 5 4. Fuel Rod Location Identification System In order to minimize possible confusion in the description of fuel rod location within an as sembly, a matrix system consisting of a
35、 refer ence location and an x and y coordinate system shall be used to identify fuel rod locations. The coordinate system shall utilize sequential Ara bic numerals beginning with Ion one axis, and letters of the English alphabet beginning with A on the other axis. The location of any rod can then be
36、 designated by its x-y coordinates from the reference location. The x-y coordi nates do not have to be affixed to the assembly. 5. Responsibilities 5.1 Documentation. The fuel fabricator shall provide to the user fuel assembly information as required to show location, size, and configu ration of ide
37、ntification numbers provided on all fuel assemblies supplied to the user. 5.2 Fabricator Records. The fuel fabricator shall be responsible for maintaining records of assigned fuel assembly identification numbers and shall assure that the numbers assigned will not be duplicated. The fabricator shall
38、maintain records which relate rod location within individual assemblies to rod identifi cation numbers. 5.3 Viewing Capability. The fuel assembly user, and the reprocessor of the fuel (if the fuel , An example of this style is shown in American National Standard Line Conventions and Lettering, ANSI
39、Y14.2-M-1992. 2 is to be reprocessed), shall, at their respective faciHties, provide viewing capability suitable for the determination of the identification of both irradiated and unirradiated fuel assem blies, as applicable. American National Standard ANSIIANS-57 .B-1995 5.4 Verification. The fuel
40、assembly user and others who handle the fuel assembly shall be responsible for verification of fuel assembly identification for all fuel assemblies at their respective installations. 3 Amcrictlll Nutionnl Standard ANSI/AN$.Sl.8-1995 4 American Nationul Standard ANSTIANS-57.8-1995 Appendix (This Appe
41、ndix is not a part of American National Standard Fuel Assembly Identification, ANSIIANS-57.8-1995, und contains no requirements beyond those stilted in the text, hut jg included for information purposes only.) Serialization Sequence The first 900 character combinations are obtained from the pair 00
42、followed by each of the pairs shown in the Table, which is to be read from left to right and from top to bottom. The first combination is 0000 and is followed by 0001. After 0009 comes OOOA. After OOOY comes 0010. The last combination of the first 900 is OOYY. The next 900 character combinations are
43、 obtained from the pair 01 followed by each of the pairs shown in the Table. The rest of the combinations are obtained from each pair from the Table followed by another pair from the Table. For example, after 19YY comes 1AOO. Table Pairs for Serialization Sequence 00 01 02 03 04 05 06 07 08 09 OA OC
44、 OD OE OG OH OJ OK OL OM ON OP OR 08 OT OU OV ow OX OY 10 11 12 13 14 15 16 17 18 19 1A 1C 1D IE 1G HI 1J 1K 1L 1M IN 1P 1R 18 IT 1U IV 1W IX 1Y 20 21 22 23 24 25 26 27 28 29 2A 2C 2D 2E 2G 2H 2J 2K 2L 2M 2N 2P 2R 28 2T 2U 2V 2W 2X 2Y 30 31 32 33 34 35 36 37 38 39 3A 3C 3D 3E 3G 3U 3J 3K 3L 3M 3N 3P
45、 3R 38 3T 3U 3V 3W 3X 3Y 40 41 42 43 44 45 46 47 48 49 4A 4C 4D 4E 4G 4H 4J 4K 4L 4M 4N 4P 4R 48 4T 4U 4V 4W 4X 4Y 50 51 52 53 54 55 56 57 58 59 5A 5C 5D 5E 5G 5H 5J 5K 5L 5M 5N 5P 5R 58 5T 5U 5V 5W 5X 5Y 60 61 62 63 64 65 66 67 68 69 6A 6C 6D 6E 6G 6H 6J 6K 6L 6M 6N 6P 6R 68 6T 6U 6V 6W 6X 6Y 70 71
46、 72 73 74 75 76 77 78 79 7A 7C 7D 7E 7G 7H 7J 7K 7L 7M 7N 7P 7R 78 7T 7U 7V 7W 7X 7Y 80 81 82 83 84 85 86 87 88 89 8A 8C 8D 8E 8G 8H 8J 8K 8L 8M 8N 8P 8R 88 8T 8U 8V 8W 8X 8Y 90 91 92 93 94 95 96 97 98 99 9A 9C 9D 9E 9G 9H OJ 9K 9L 9M 9N 9P 9R 98 9T 9U 9V 9W 9X 9Y AO Al A2 A3 A4 A5 A6 A7 A8 A9 AA AC
47、 AD AE AG AH AJ AK AL AM AN AP AR AS AT AU AV AW AX AY CO C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CC CD CE CG CH CJ CK CL CM CN CP CR C8 CT CU CV CW CX CY DO D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DC DD DE DG DH DJ DK DL DM DN DP DR D8 DT DU DV DW DX DY EO E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EC ED EE EG EH EJ EK EL EM EN EP
48、 ER E8 ET EU EV EW EX EY GO G1 G2 G3 G4 G5 G6 G7 G8 G9 GA GC GD GE GG GH GJ GK GL GM GN GP GR G8 GT GU GV GW GX GY 5 Amcricnn NuLionnl Slnndurd ANSJ/ANS-57.8-1995 Table (continued) HO HI H2 H3 H4 H5 H6 H7 H8 H9 HA HC HD HE HG HH HJ HK HL HM HN HP HR HS HT HU HV HW HX HY JO JI J2 J3 J4 J5 J6 J7 J8 J9
49、 JA JC JD JE JG JH JJ JK JL JM IN JP JR JS JT JU JV JW JX JY KO KI K2 K3 K4 K5 K6 K7 K8 K9 KA KC KD KE KG KH KJ KK KL KM KN KP KR KS KT KU KV KW KX KY LO LI L2 L3 L4 L5 L6 L7 L8 L9 LA LC LD LE LG LH LJ LK LL LM LN LP LR LS LT LU LV LW LX LY MO MI M2 M3 M4 M5 M6 M7 M8 M9 MA MC MD ME MG MH MJ MK ML MM MN MP MR MS MT MU MV MW MX MY NO NI N2 N3 N4 N5 N6 N7 N8 N9 NA NC ND NE NG NH NJ NK NL NM NN NP NR NS NT NU NV NW NX NY PO PI P2 P3 P4 P5 P6 P7 P8 P9 PA PC PD PE PG PH PJ PK PL PM PN PP PR PS PT PU PV PW PX PY RO RI R2 R3 R4 R5 R6 R7 R8 R9 RA RC RD RE RG RH RJ RK RL RM RN R
