Abstract
In this study, a test is conducted to determine the properties of pressure vessels for 10 types of hazardous substances on the market under Article 21 of the Detailed Standards on Hazardous Substance Safety Management (Hydrolysis Criteria, etc.) and examine the appropriateness of the current quantity judgment based on the results. A thermal decomposition test was conducted on 10 types of hazardous substances of Class-5 used and distributed at industrial sites and compared with the designated quantity according to the nomenclature. According to the result, the designated quantity according to the nomenclature and the specified quantity by the pressure vessel test results did not align for some substances. This confirms the current method of determining the designated quantity for Class 5 hazardous substances under the Safety Control of Dangerous Substances Act according to the nomenclature is inadequate. Therefore, it was confirmed that it was appropriate to determine the designated quantity and riskiness for Class 5 hazardous substances based on the results of the test conducted according to the pressure vessel test method, etc., rather than the basis the nomenclature.
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