Beginner--What standards should be followed for testing equipment for leaks and airtightness? ?
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What standards should be followed for equipment pressure testing, leak testing, and airtightness checks? ? Are the manufacturers’ equipment tested for pressure and leaks before leaving the factory? What standards are used to test such equipment for pressure and leaks on-site when it is manufactured there? Thank you!
Practical method: Use the eyes to check for water and steam; use soapy water to check for airtightness of nitrogen.
It depends on what device you have; there are standards for that
What are the respective standards for atmospheric pressure equipment and pressure vessels? ?
To distinguish them from vessels at atmospheric pressure, only vessels that meet all of the following three conditions can be referred to as pressure vessels: (1) The operating pressure is greater than or equal to 0.1 Mpa (operating pressure refers to the highest pressure (gauge pressure) that the top of the pressure vessel may reach under normal operating conditions)； (Excluding hydrostatic pressure) (2) The inner diameter (for non-circular cross-sections, this refers to the largest dimension) is 0.15 m or greater. Furthermore, the volume (V) is greater than or equal to 0.025 cubic meters, and the product of the operating pressure and the volume is greater than or equal to 2.5 MPa·L ； (3) The medium contained is a gas, a liquefied gas, or a liquid whose maximum operating temperature is higher than or equal to its standard boiling point.
Regulations on Safety Inspection of Simple Pressure Vessels TSG R0003 TSG R0004-2009 \"Regulations on Safety Inspection of Fixed Pressure Vessels\"
The acceptance criteria for our airtightness tests are as follows: 1. No leaks at on-site flanges, manholes, etc； 2. Leakage rate A ≤ 0.5%. Formula for leakage rate: A = 100 × (1 – P2T1/P1T2) / t %; A represents the average hourly leakage rate in % ； P1 – Pressure at the start of the test, in MPaA ； P2 – Pressure at the end of the test, in MPaA ； T1 – Temperature in K at the start of the test ； T2 – Temperature in K at the end of the test ； t – test time, in hours.