ASTM C1295-2005
六氟化铀裂变产物释放的γ射线能量辐射的标准试验方法

Standard Test Method for Gamma Energy Emission from Fission Products in Uranium Hexafluoride and Uranyl Nitrate Solution

标准号

ASTM C1295-2005

发布日期

2005年

实施日期

废止日期

无

中国标准分类号

F46

国际标准分类号

27.120.30 (Fissile materials and nuclear fuel tech

发布单位

US-ASTM

适用范围

The gamma-ray emitting fission products in UF₆ are identified and quantified using a high-resolution gamma-ray energy analysis system, which includes a high-resolution germanium detector. This test method shall be used to meet the health and safety specifications of C 787, C 788, and C 996 regarding applicable fission products in reprocessed uranium solutions.

1.1 This test method covers the measurement of gamma energy emitted from fission products in uranium hexafluoride (UF6) and uranyl nitrate solution. It is intended to provide a method for demonstrating compliance with UF6 specifications C 787 and C 996 and uranyl nitrate specification C 788.

1.2 The lower limit of detection is 5000 MeV Bq/kg (MeV/kg per second) of uranium and is the square root of the sum of the squares of the individual reporting limits of the nuclides to be measured. The limit of detection was determined on a pure, aged natural uranium (ANU) solution. The value is dependent upon detector efficiency and background.

1.3 The nuclides to be measured are¹⁰⁶Ru/ ¹⁰⁶Rh, ¹⁰³Ru,¹³⁷Cs, ¹⁴⁴Ce, ¹⁴⁴Pr, ¹⁴¹Ce, ⁹⁵Zr, ⁹⁵Nb, and ¹²⁵Sb. Other gamma energy-emitting fission nuclides present in the spectrum at detectable levels should be identified and quantified as required by the data quality objectives.

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.

ASTM C1295-2005 中可能用到的仪器设备