I would like to ask: Is a pipeline using Class B lubricant (with a flash point of around 200°C and a design pressure of 0.6 MPa) considered a pressure pipeline at normal temperatures? ”
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I would like to ask fellow users: For lubricating oil of type CB (with a flash point of around 200°C and a design pressure of 0.6 MPa, is a pipeline operating at room temperature considered a pressure pipeline? ” 1. According to the provisions in the appendix of the “TSG-D0001-2009 Safety Supervision Regulations for Pressure Pipelines – Industrial Pipelines”: “A2.4 Fire hazard: (1) The fire hazard of the media contained within pressure pipelines includes flammable gases of categories A and B, liquefied hydrocarbons, as well as flammable liquids of categories A and B, as specified in GB 50160–2008 ‘Code for Fire Protection Design of Petrochemical Enterprises’ and GB 50016–2006 ‘Code for Fire Protection Design of Buildings’. Flammable liquids of category C whose operating temperature is above their flash point shall be regarded as flammable liquids of category B.” 2. Additionally, according to “GB-T-20801-2006 – Code for Pressure Pipelines – Industrial Pipelines”, clause 3.11 states: “Flammable and explosive media refer to fluids defined as categories A and B under GB50160 and GB50016, as well as those whose operating temperature is higher than their flash point.” ” As can be seen from points 1 and 2 above, the term \"flammable liquids\" in the definition of pressure pipelines under TSG does not include lubricants at normal temperature; therefore, are pipelines for lubricants at normal temperature considered pressure pipelines?
It should be determined whether it falls under the category of \"pressure pipelines\" in accordance with the Announcement by the General Administration of Quality Supervision, Inspection and Quarantine on the Revision of the Catalogue of Special Equipment (No. 114, 2014). The Catalogue of Special Equipment defines pressure pipelines as tubular devices that use a certain pressure to transport gases or liquids; such devices are those with a maximum operating pressure of 0.1 MPa or more (gauge pressure), whose medium is gas, liquefied gas, steam, or a liquid that is flammable, explosive, toxic, corrosive, and has a maximum operating temperature equal to or higher than its standard boiling point, and whose nominal diameter is 50 mm or more. Except for pipes with a nominal diameter of less than 150 mm and a maximum operating pressure of less than 1.6 MPa (gauge pressure), as well as the pipes that form part of the equipment used for transporting non-toxic, non-flammable, and non-corrosive gases. Among them, the safety supervision and management of oil and gas pipelines shall also be carried out in accordance with laws and regulations such as the Work Safety Law and the Oil and Gas Pipeline Protection Law. According to the \"Code for Fire Protection Design of Petrochemical Enterprises\" GB 50160–2008, lubricating oils are classified as Class C flammable liquids. Based on the definition of \"pressure pipelines\" in the \"Catalogue of Special Equipment\", if the nominal diameter of a pipeline is 50 mm or greater, it is considered a \"pressure pipeline\"”
Announcement by the State Administration for Market Regulation on Matters Related to Administrative Licenses for Special Equipment [2019, No. 3] Attachment 1: GC1 – 1. Process pipelines for transporting media specified in the Catalog of Hazardous Chemicals that fall under acute toxicity category 1, gas media of acute toxicity category 2, and liquid media of acute toxicity category 2 whose operating temperature is higher than their standard boiling point； 2. Process pipelines that transport flammable gases of Class A or B, or flammable liquids of Class A (including liquefied hydrocarbons), as specified in GB50160 \"Code for Fire Protection Design of Petrochemical Enterprises\" and GB50016 \"Code for Fire Protection Design of Buildings\", and whose design pressure is 4.0 MPa or higher ； 3. Process pipelines that transport fluid media, with a design pressure of 10.0 MPa or more, or a design pressure of 4.0 MPa or more along with a design temperature of 400°C or higher. GC2 level: 1. Process pipelines other than GC1 level; 2. Refrigeration pipelines
“According to clause 3.11 of the \"GB-T-20801-2006 – Code for Pressure Piping – Industrial Piping\", \"Flammable and explosive media refer to fluids classified as Category A and B as defined in GB50160 and GB50016, as well as those whose operating temperature is higher than their flash point.\" ”Where else did you find this explanation? It’s not the official standard version, right? ?