Y.-M. Qiu's research while affiliated with China Academy of Engineering Physics and other places

Publications (11)

Article
In order to evaluate the influence of tritium on the environment, the method of low temperature resolving-liquid scintillation counting (LSC) has been developed to analyze the tritium activity of environmental plant. The tissue free water tritium (TFWT) in plant around nuclear facilities is resolved in the temperature range of 110~120℃, and the tri...
Article
In order to minimize radioactive wastes, it is necessary to analyse 36Cl in graphite during reactor decommissioning. The dissolution method was set up. The mixed solution of H2SO4, HNO3 and KMnO4 was used to dissolute graphite samples. The chemical recovery rate of the dissolution method was more than 89.38%.
Article
The scheme of decommissioning tritium contaminated metal glovebox was designed, which can reduce tritium gas release during the glovebox dismantling, the volume of tritium waste and the radiation damage. The scheme includes a preliminary tritium decontamination before the glovebox dismantling, a suitable cutting technology for the glovebox and a mu...
Article
According to the status of tritium from the stainless steel pipe which is used to the structure materials in some tritium-operating system, the technological process for tritium decontamination of the pipe is designed. An experimental device is then developed to decontaminate tritium from the decommissioned stainless steel pipe. The decontamination...
Article
The decommissioning process of a tritium target preparation system and radioprotection were introduced. The doses of the public and workers were also estimated. During decommissioning, the doses of the public and the workers absorbing tritium are both much lower than that of the national standard.
Article
In order to prepare hydrophobic catalyst which can withstand higher temperature and can be used for catalisis of reaction between hydrogen and oxygen and used for decontamination of tritium-containing gases. The ceramic hydrophobic catalyst carrier was prepared by processing porous hydrophobic zeolite with strong acid. Then the ceramic hydrophobic...
Article
Tritium can be released from the exterior of tritium-contaminated stainless steel by slight stirring while decontaminating and disassembling. In order to avoid secondary tritium contamination to environment and operators, it is necessary to cover with an effective coating to tritium on the exterior of tritium-contaminated stainless steel and fill a...
Article
The wiping decontamination and stripping coating decontamination were applied to decontaminate the floors and metals in the glove box polluted by tritium. The results show that the polluting level is lower than 20 Bq/cm2 through wiping decontamination. The DFs are higher for decontaminating higher-polluted metals using two stripping coatings while...
Article
The distribution and the forming of the tritium in the surface layer of the stainless steel which would be decommissioned were studied using chemical etching. The samples are the real tritium pollution stainless steel coming from the decommissioning tritium facility. The most of the tritium gathers in the surface of the samples, in the range of 0-4...
Article
To analyze 14C content in graphite of reactor retirement waste, a suit of making sample experiment system with high temperature catalysis and oxidation was designed. The treatment ability and working function of this system were confirmed partly in the lab. The results show that the catalysis and oxidation ability is 96% with 1 L/min gas flux and 8...
Article
In order to develop a method of measuring 63Ni in aluminium alloy samples in reactor, a pre-treating technique of aluminium alloy samples was established by contrasting the ways of dissolving the samples, as well as the different conditions of ion exchange and extraction. Chemical yield of this method is beyond 70%. Decontamination factor is beyond...