Determination method for determining aerosol concentration and behavior under test conditions

Abstract

The invention relates to the technical field of aerosol tests in a containment shell and particularly discloses a method for determining the aerosol concentration and behavior under test conditions. The method comprises the following steps: step one, preheating an aerosol measurement system; step two, conveying the aerosol to a test container, and carrying out deposition; step three, measuring theaerosol by using an aerosol measurement system connected with the test container; step four, aerosol resuspension and reentrainment measurement; step five, carrying out aerosol measurement; and stepsix, after aerosol measurement, carrying out pressure relief of the test container and exhausting waste gas and waste liquid. According to the invention, the test model study can be carried out on theaerosol migration behaviors in the passive containment shell of the third-generation nuclear power plant systematically and comprehensively; and with testing and simulation of the rear real aerosol environment, the aerosol behavior test under a severe accident condition can be carried out conveniently.

Description

technical field

[0001] The invention belongs to the technical field of aerosol test in a containment vessel, and in particular relates to a method for measuring aerosol concentration and behavior under test conditions. Background technique

[0002] In traditional second-generation PWRs, dry-sealed containment vessels are generally used. The containment vessel is made of reinforced concrete, and a containment spray system is specially set up to reduce the pressure and temperature inside the containment vessel under accident conditions. The passive containment cooling system is installed in the third-generation large-scale advanced pressurized water reactor AP1000. The system consists of a water storage tank integrated with the containment shielding structure, and the water is delivered from the water tank to the containment shell through the flow distribution device. The piping of the body, as well as related instruments, piping and valves.

[0003] In the case of severe ac...

Examples

Embodiment Construction

[0060] A method for measuring aerosol concentration and behavior under test conditions, the method specifically comprises the steps of:

[0061] Step 1. Preheat the aerosol measurement system;

[0062] Step 1.1, preheating the steam generator connected to the test container;

[0063] The steam generator is a stainless steel container with a heater installed inside, which can generate high-temperature and high-pressure steam, and transport it to the lower part of the water jacket area on the side wall of the test container. The water supply tank is connected with the steam generator through a water pump, and the steam is generated through the water supply tank The generator supplies deionized water; the steam generator is preheated to 150°C to 200°C through the heater;

[0064] Step 1.2, start the water temperature control system connected to the test vessel, and control the temperature of the test vessel;

[0065] The side wall of the aerosol test container is a sandwich str...

technical field

[0001] The invention belongs to the technical field of aerosol test in a containment vessel, and in particular relates to a method for measuring aerosol concentration and behavior under test conditions. Background technique

[0002] In traditional second-generation PWRs, dry-sealed containment vessels are generally used. The containment vessel is made of reinforced concrete, and a containment spray system is specially set up to reduce the pressure and temperature inside the containment vessel under accident conditions. The passive containment cooling system is installed in the third-generation large-scale advanced pressurized water reactor AP1000. The system consists of a water storage tank integrated with the containment shielding structure, and the water is delivered from the water tank to the containment shell through the flow distribution device. The piping of the body, as well as related instruments, piping and valves.

[0003] In the case of severe ac...

Examples

Embodiment Construction

[0060] A method for measuring aerosol concentration and behavior under test conditions, the method specifically comprises the steps of:

[0061] Step 1. Preheat the aerosol measurement system;

[0062] Step 1.1, preheating the steam generator connected to the test container;

[0063] The steam generator is a stainless steel container with a heater installed inside, which can generate high-temperature and high-pressure steam, and transport it to the lower part of the water jacket area on the side wall of the test container. The water supply tank is connected with the steam generator through a water pump, and the steam is generated through the water supply tank The generator supplies deionized water; the steam generator is preheated to 150°C to 200°C through the heater;

[0064] Step 1.2, start the water temperature control system connected to the test vessel, and control the temperature of the test vessel;

[0065] The side wall of the aerosol test container is a sandwich str...