Question regarding the operating pressure of liquefied gas cylinders
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The design pressure of the liquefied gas cylinder is 1.7 MPa, and the setting pressure of the safety valve is 1.6 MPa. Operating pressure: 0.85 MPa, operating temperature: 46°C. What are the risks if the pressure exceeds 0.85 MPa during actual operation, for example if it remains at 0.9–1.0 MPa for an extended period of time?
This post was last edited by poiuyt147 on 2019-7-21 23:05. As long as it is within the design pressure limits, it should be safe. A more conservative approach is to adopt a certain design pressure coefficient and operate within that range.
No danger, no pressure beyond design limits
The operating pressure refers to the value within the normal operating range; in general, pressure vessels also have a maximum operating pressure. For example, the maximum operating pressure of liquefied petroleum gas cylinders is usually 1.2 Mpa, so operating at 0.9–1.0 Mpa is no problem. It is necessary to carry out regular inspections and routine checks, as well as maintain the safety accessories properly. The pressure in normal liquefied petroleum gas cylinders should not be this high (except in areas with high temperatures). Changes in the stored medium or its properties may occur, so it is essential to conduct analyses of the material properties and take precautions against corrosion caused by sulfur-containing impurities.