Pressure testing method for radioactive isotope carrier

Abstract

The invention discloses a pressure testing method for a radioactive isotope carrier. The method comprises the following steps of: coating a certain quantity of radioactive isotope carriers with cotton gauze, and putting into a high-pressure reaction kettle which is resistant to the pressure of 10-40 MPa; putting chemical reagents which can produce gases through chemical reactions into the high-pressure reaction kettle in an isolating way; sealing the high-pressure reaction kettle, mixing the at least two types of chemical reagents, and raising the pressure of a system to a target pressure; when the pressure is constant, preserving pressure for 3-5 hours; and safely deflating to the normal pressure in a ventilation kitchen, opening the high-pressure reaction kettle, taking the radioactive isotope carriers out, and measuring the breakage rate, density and granularity by experimenting. The pressure testing method disclosed by the invention has the characteristics of low equipment cost and easiness, convenience and practicability for operating.

Description

technical field

[0001] The invention belongs to the field of withstand voltage test, in particular to a method for withstand voltage test of a radioisotope carrier. Background technique

[0002] Solid-loaded tracers widely used in injection profile logging in China (such as 131 Ba GTP microsphere tracer) needs to work under high pressure, and the pressure resistance of the carrier is an important performance index. This pressure test often occurs in the carrier development and selection stage, and the pressure resistance test requires a high pressure The test environment usually requires a press or a high-pressure syringe pump to achieve high pressure. These characteristics determine that the pressure test equipment in the prior art is complicated and the test method is relatively cumbersome. Applications of compressive strength, such as in field operations, present considerable limitations. Therefore, there is an urgent need for a test method with simple equipment and sim...