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1、INTERNATIONAL STANDARD IS0 10979 First edition 1994-06-I 5 Identification of fuel assemblies for nuclear power reactors Identification des assemblages combustibles destinh aux rkacteurs nuc these products are then added. The test character value is the difference between the next greater multiple of
2、 30 and this sum. The test character is the character associated with this value in table 1. If the difference amounts to 30, the test character is zero. At the discretion of the fabricator or operator, addi- tional marking may be added to the fuel assembly. This marking should be in a separate area
3、 but where this is not considered possible or desirable, then the additional marking shall be separated from the unique identification code by a “*” or “/“. Confusion shall not be possible. Any additional mark shall consist of less digits than the unique identification code. 5 Style of characters an
4、d application of identification mark 5.1 Style of characters The characters used for the identification marking on fuel assemblies shall be Arabic numerals and capital letters in, or similar to, the vertical standard lettering for use in drawings conforming to IS0 3098-l. 5.2 Arrangement of identifi
5、cation code on fuel assembly The characters of an identification code shall be ar- ranged in horizontal order from left to right, in vertical order from top downwards, or clockwise (reading from the inside outwards) in the sequence specified. Table 1 - Character values Character Value 0 0 1 1 2 2 3
6、3 4 4 5 5 6 6 7 7 8 8 9 9 Character Value A 10 C 11 D 12 E 13 G 14 l-l 15 J 16 K 17 L 18 tvl 19 Character Value N 20 P 21 R 22 S 23 T 24 u 25 v 26 w 27 X 28 Y 29 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/997254
7、5001 Not for Resale, 04/27/2007 03:33:55 MDTNo reproduction or networking permitted without license from IHS -,-,- Q IS0 IS0 10979:1994(E) 5.3 Location and application of identification code on fuel assembly The identification code shall be applied to an essential component of the fuel assembly in s
8、uch a manner that it can be very easily read. If elements of the identification code are identical for a group of fuel as- semblies or if, for other reasons, they do not necess- arily have to be identifiable on the fuel assembly (e.g. a code for the identification of the reactor), the code need not
9、be so conspicuous. 5.4 Size of characters comprising identification code The identification code shall be applied so that it does not affect the performance and integrity of the fuel assemblies and shall remain readable and indelible during its use in the reactor core. 6 Fuel assembly identification
10、 after modification of the fuel assembly After modification (e.g. repair) of a fuel assembly, the identification code shall remain unmodified if the component to which it is applied will continue to be used. Such modifications shall be registered. The characters of the identification code, including
11、 the test character, shall all be of the same size. 5.5 Method of application of identification code to fuel assembly 7 Other identification systems If identification codes are used outside the field of application of an existing system, e.g. ANSVANS-57.8, the system to which the code belongs shall
12、be indi- cated. This indication need not be made on the fuel assembly itself. 3 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 03:33:55 MDTNo reproduction or networking permitte
13、d without license from IHS -,-,- IS0 10979:1994(E) Q IS0 Annex A (informative) Bibliography l IAEA Safety Guide 50-SG-QA 11, Quality Assurance in the Procurement, Design and Manufacture of Nuclear Fuel Assemblies. 2 ANSI/ANS-57.8-19781 , Nuclear Fuel Assembly Identification. 3 DIN 25 433:1988, Kennz
14、eichnung van Brennelementen fiir Leistungsreaktoren Fuel assembly identification for nuclear power reactors. 1) Currently under revision. 4 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 0
15、4/27/2007 03:33:55 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 10979:1994(E) ICS 27.120.10 Descriptors: nuclear energy, nuclear reactors, nuclear fuels, nuclear fuel assemblies, Identification methods, deslgnatlon, marking, alphanumeric codes. Price based on 4 paaes Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/27/2007 03:33:55 MDTNo reproduction or networking permitted without license from IHS -,-,-