【Daily Question No. 15】June 15, 2018
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Pressure vessels that fall under the scope of supervision for special equipment refer to fixed and mobile containers of gases, liquefied gases, and liquids whose maximum operating pressure is greater than or equal to ( ) MPa (gauge pressure), and whose product of operating pressure and volume is greater than or equal to ( ) MPa/L, with a maximum operating temperature greater than or equal to their standard boiling point. A. 0.1 ； 2.5 B．0.2 ； 3.0 C．0.5 ； 3.5 D．1.0 ； 1.5 C: For management purposes, if you need to view content from a few days ago, please access it through the summary post below. https://bbs.hcbbs.com/home.php?m ... w=me&from=space
C. 0.5； 3.5 The focus of this question is to distinguish the basic technical parameters of pressure vessels within the scope of supervision for special equipment. In a broad sense, pressure vessels refer to enclosed containers that are subjected to pressure, including pressure cookers, various types of storage tanks, compressors, spacecraft, nuclear reaction vessels, boilers, and furnaces with organic heat carriers. The danger associated with pressure vessels is primarily influenced by a combination of factors such as the vessel’s operating pressure, volume, the product of pressure and volume, and the maximum operating temperature; among these, the greatest influence is exerted by the vessel’s maximum operating pressure. For the convenience of safety management, the scope of pressure vessels that are subject to regulation as special equipment is often defined. The Regulations on the Safety Supervision of Special Equipment (Decree No. 373 of the State Council) stipulate that containers with a maximum operating pressure of 0.1 MPa or higher, and whose product of operating pressure and volume is 2.5 MPa/L or greater, are considered pressure vessels. If BCD is selected, it means that pressure vessels with a maximum operating pressure within the range of 0.1 MPa and the value specified for BCD are excluded from the category of special equipment subject to regulation, which is clearly incorrect.
A. 0.1； 2.5