Is a pressure vessel certificate required?
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Our company needs to manufacture a container in which the liquid reaches a pressure of 0.25 MPa during normal operation. Does this count as a pressure vessel? Is it necessary to obtain a certificate for pressure vessels when manufacturing it?
Yes, you can look up information related to tolerance specifications online.
Pressure vessels generally refer to those used in industrial production and daily life; there are numerous such pressure-containing containers, and they vary greatly in terms of pressure level, volume, degree of hazard posed by the medium inside, and explosion risk. Currently, China’s \"Regulations on Safety Supervision of Pressure Vessels\" include only those vessels that meet all of the following three conditions as being subject to safety supervision: 1. The maximum operating pressure PW ≥ 0.1 MPa (gauge pressure, excluding the static pressure of the liquid column)； 2. The inner diameter (for non-circular cross-sections, this refers to the largest dimension of the cross-section) Dn must be ≥ 0.15 m, and the volume V must be ≥ 0.025 m3 ； 3. The medium is a gas, a liquefied gas, or a liquid with a maximum operating temperature ≥ the standard boiling point (the saturation temperature at standard atmospheric pressure). In addition, separate safety inspection scopes have also been defined for gas cylinders and ultra-high pressure vessels. Yours must be a pressure vessel, so you need certification.
This post was last edited by wwhui816 on 2011-5-30 22:17. The parameters you provided are incomplete, so it’s impossible to make a determination. It definitely belongs to a pressure vessel; the key is to determine which regulatory standards apply to such vessels in order to establish their manufacturing requirements. 1. If your container is fixed-type, please make a judgment in accordance with the \"TSG R0004-2009 Safety Technical Inspection Regulations for Fixed-Type Pressure Vessels\" ； 2. If your container is mobile, please make a judgment in accordance with the \"TSG R0005-2010 Safety Technical Inspection Regulations for Mobile Pressure Vessels\" (draft for comment, not yet issued; the content may not change much) ； 3. If your container is a simple pressure vessel, make the judgment in accordance with the \"TSG R0003-2007 Safety Technical Inspection Regulations for Simple Pressure Vessels\" ； Each of the above supervision regulations specifies different qualification certificates required for manufacturing.
It’s impossible to determine whether it belongs to a pressure vessel just based on a pressure of 0.25 MPa, right?
Generally, obtaining a pressure vessel certificate is required to manufacture such vessels. Since you don’t only produce this type of vessel, it’s not an issue when the pressure is low; but when the pressure is high, there must be a person responsible. So, for your greater development and to be able to produce more containers, it’s best to get a license!
Just based on pressure, it is not possible to determine whether it is a container. If it’s a container, and your company doesn’t have the necessary certifications, you can provide the materials and find another qualified company to carry out the work, paying them a fee for their services.