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简述了我国低温贮运容器真空度判定标准的基本情况。根据《在用压力容器检验规程》中“合于使用”的原则 ,对合理地确定定期检验中夹层真空度的合格标准以及保证低温容器安全使用做了分析和探讨。指出 :以制造标准给定的封结真空度作为定检时的合格标准 ,不合理 ;每台低温容器的真空度降低速率不同 ,导致了真空度的判定标准不同。
The basic situation of the judgment standard of vacuum degree of cryogenic storage and transportation container in China is briefly described. According to the principle of “fit to use” in the “Inspecting In-use Pressure Vessel”, it is necessary to analyze and discuss the qualified standard to reasonably determine the degree of interlayer vacuum in periodic inspection and to ensure the safe use of cryogenic vessel. It is unreasonable to use the seal vacuum given by the manufacturing standard as the qualified standard for the fixed inspection. The rate of vacuum reduction of each low temperature container is different, resulting in different standards of determination of vacuum.