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ASTM C968-06
Standard Test Methods for Analysis of Sintered Gadolinium Oxide-Uranium Dioxide Pellets
Automaticky preložený názov:
Štandardné testovacie metódy pre analýzy Spekané gadolíniom sa zvýrazňujúcimi Oxide uránu uhličitého peliet
NORMA vydaná dňa 1.7.2006
Informácie o norme:
Označenie normy: ASTM C968-06
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.7.2006
Kód tovaru: NS-15893
Počet strán: 5
Približná hmotnosť: 15 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Anotácia textu normy ASTM C968-06 :
Keywords:
Multiple-filament surface-ionization mass spectrometric method, Nessler reagent method, Nitrogen content--nuclear materials, Oxygen-to-metal (O/M) ratio, Pyrohydrolysis ion-selective electrode method, Spectrographic analysis, Spectroscopy--emission, Thermal analysis (TA), Thorium content, Trace elements--spectrochemical analysis, Uranium, Uranium content, Uranium isotopic analysis, Vacuum testing, Volatile matter content--nuclear materials, Ceramographic determination
Doplňujúce informácie
| Significance and Use | ||||||||||||||||||||||||||||||||||||||
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The test methods in this method are designed to show whether a given material is in accordance with Specification C922. |
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| 1. Scope | ||||||||||||||||||||||||||||||||||||||
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1.1 These test methods cover procedures for the analysis of sintered gadolinium oxide-uranium dioxide pellets to determine compliance with specifications. 1.2 The analytical procedures appear in the following order:
1.3 The values stated in SI units are to be regarded as the standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 6.1 This test method describes the determination of nitrogen in gadolinium oxide-uranium dioxide pellets (Gd2O3/UO2). With a 2 to 5-g sample, concentrations from 5 to 100 μg of nitrogen are determined without interference. 17.1 The homogeneity of Gd2O3 in UO2 has been cited in Specification C922 as an important requirement for this fuel form. The uniform distribution of gadolinia in urania will result in up to three components in the pellet: free Gd2O3, free UO2, and a Gd2O3-UO2 solid solution. There are a number of ways for assessing uniformity of which the ceramographic method described here may not be the most definitive. This technique has been used over the gadolinia concentration range from 1 to 10 weight %. |
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| 2. Referenced Documents | ||||||||||||||||||||||||||||||||||||||
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