Measurement system, calibration and measurement method for bulk radiation wastes

Patent metadata

Field	Value
Publication number	US-9841516-B1
Application number	US-201615227371-A
Country	US
Kind code	B1
Filing date	Aug 3, 2016
Priority date	Aug 3, 2016
Publication date	Dec 12, 2017
Grant date	Dec 12, 2017

Abstract

The invention provides a calibration method for bulk radiation wastes. The calibration method for bulk radiation method for bulk radiation wastes including the following steps. First, pluralities of objects are provided. Then, the plurality of objects arranged into calibration member. In addition, a measurement system and a measurement method for bulk radiation wastes are provided.

First claim

What is claimed is:

1. A measurement system for bulk radiation wastes, comprising:
a calibration member, composed of a plurality of objects that are assembled and arranged into the calibration member, wherein the calibration member is composed of the plurality of objects that are stacked into a block, or is composed of a plurality of slices that are assembled into a large-area slice-like object if each of the objects is a slice-like piece; and
an in-situ gamma spectroscopy, composed of a detector and a standard member, wherein the detector is coupled to the standard member, the standard member has a surface activity or total interior activity and is formed with geometrical parameters conforming to the calibration member, and the geometrical parameters include size, volume, shell thickness, weight, texture, and distance, and wherein the in-situ gamma spectroscopy is configured for:
detecting, by the detector, the surface activity or total interior activity of the calibration member; and
comparing the detected surface activity or total interior activity with the surface activity or total interior activity of the standard member.

2. The measurement system of claim 1 , wherein in a condition when the plural objects pass a comparison of activity measurement, the plural objects are stacked into the calibration member.

3. The measurement system of claim 2 , wherein in a condition when each of the plural objects is a box-like object, the plural box-like objects are stacked and arranged into a shape selected from the group consisting of: a cuboid and a cube.

4. The measurement system of claim 2 , wherein in a condition when each of the plural objects is a barrel-like object, the plural barrel-like objects are stacked and arranged into a cubical object.

5. The measurement system of claim 4 , wherein the cubical object is an object selected from the group consisting of: a cube, a cube of four barrel-like objects, a cuboid of six barrel-like objects, a cuboid of eight barrel-like objects, and a cube of eight barrel-like objects.

6. The measurement system of claim 1 , wherein in a condition when each of the plural objects is a slice-like object and is conforming to a national radioactivity standard of Cs-137 and Co-60, the plural slice-like objects are assembled and arranged into a large-area slice-like calibration member.

7. A method of establishing a calibration element for correcting bulk radiation waste, comprising the steps of:
providing a plurality of objects; and
arranging the plural objects into a calibration member, wherein the calibration member is composed of the plural objects to be stacked into a block, or is composed of a plurality of slices that are assembled into a large-area slice-like object if each of the objects is a slice-like piece.

8. The calibration method of claim 7 , wherein in a condition when the plural objects are to be stacked into the block, each of the plural objects is capable of passing a comparison of activity measurement.

9. The calibration method of claim 7 , wherein in a condition when each of the plural objects is a slice-like object, each of the plural slice-like objects is conforming to a national radioactivity standard of Cs-137 and Co-60.

10. The calibration method of claim 7 , wherein in a condition when each of the plural objects is a box-like object, the stacking of the plural box-like objects includes the step of:
stacking the plural box-like objects into a shape selected from the group consisting of: a cuboid and a cube.

11. The calibration method of claim 7 , wherein in a condition when each of the plural objects is a barrel-like object, the stacking of the plural barrel-like objects includes the step of:
stacking the plural barrel-like objects into a cubical object, while allowing the cuboid object to be an object selected from the group consisting of: a cube, a cube of four barrel-like objects, a cuboid of six barrel-like objects, a cuboid of eight barrel-like objects, and a cube of eight barrel-like objects.

12. A measurement method for bulk radiation wastes, comprising the steps of:
providing a calibration member and an in-situ gamma spectroscopy, wherein the calibration member is composed of a plurality of objects that are stacked into a block or a plurality of slices that are assembled into a large-area slice-like object;
enabling the in-situ gamma spectroscopy to include a detector and a standard member, wherein the standard member has a surface activity or total interior activity and is formed with geometrical parameters conforming to the calibration member, and the geometrical parameters include size, volume, shell thickness, weight, texture, and distance;
detecting, by the detector, the surface activity or total interior activity of the calibration member; and
comparing, by the in-situ gamma spectroscopy, the detected surface activity or total interior activity with the surface activity or total interior activity of the standard member.

13. The measurement method of claim 12 , wherein in a condition when the plural objects are to be stacked into the block, each of the plural objects is capable of passing a comparison of activity measurement.

14. The measurement method of claim 12 , wherein in a condition when each of the plural objects is a slice, each of the plural slice-like objects is conforming to a national radioactivity standard of Cs-137 and Co-60.

15. The measurement method of claim 12 , wherein in a condition when each of the plural objects is a box-like object, the stacking of the plural box-like objects includes the step of:
stacking the plural box-like objects into a shape selected from the group consisting of: a cuboid and a cube.

16. The measurement method of claim 12 , wherein in a condition when each of the plural objects is a barrel-like object, the stacking of the plural barrel-like objects includes the step of:
stacking the plural barrel-like objects into a cubical object, while allowing the cuboid object to be an object selected from the group consisting of: a cube, a cube of four barrel-like objects, a cuboid of six barrel-like objects, a cuboid of eight barrel-like objects, and a cube of eight barrel-like objects.

Assignees

• Iner Aec Executive Yuan

Inventors

• Yuan Ming-Chen
• Huang Wun-Jhih
• Huang Ping-Ji
• Yeh Chin-Hsien

Classifications

• G01T7/005 Primary

  calibration techniques (stabilization of spectrometer G01T1/40) · CPC title

• G01T1/36

  Measuring spectral distribution of X-rays or of nuclear radiation {spectrometry (pulse selection circuits per se H03K; investigation of materials by radiation diffraction G01N23/20; spectrometer tubes H01J49/00)} · CPC title