What type of pipeline medium cannot be used for pressure testing, neither with water nor with steam?
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This post was last edited by chinazwr on 2010-1-2 at 21:33. Which type of pipeline medium cannot be used for pressure testing, neither with water nor with steam?
It depends on whether the medium in the pipeline in the future is sensitive to water; if it is, then water or steam should not be used as pressure testing media. Generally speaking, it is best not to use steam for pressure testing non-steam pipelines.
Try it out first before drying it; the hydrostatic test is a strength test. Can steam be used for pressure testing? Only know about hydraulic testing. If using gas, it’s usually a gas tightness test, right?
For newly installed pipes, pressure testing can be carried out using either water or steam. For pressure testing during maintenance, if it is a sulfuric acid pipeline, water or steam should be used for testing; first, the pipe must be purged with nitrogen, and only after thorough purging can water or steam be used for pressure testing. After the pressure testing is complete, when allowing materials to flow through, it is necessary to blow nitrogen through again to check the dew point; only once the dew point meets the requirements can the materials be allowed to flow.
Take air? ? ? Will it work? ! !
I’m hearing about this for the first time; I’ll wait and see
1. Any medium can be pressure-tested using water and steam; the key is to determine whether the pipe can withstand the pressure and temperature. For example, pipes with internal anti-corrosion coatings or plastic pipes are prone to damage from steam. 2. The statement that water or steam cannot be used refers to situations where residual water may cause damage or lead to chemical reactions with the medium. Examples include strong acids and bases that react when in contact with water, as well as heat transfer oils whose properties change when exposed to water. However, this is not an absolute rule； Theoretically, after testing these pipes with water under pressure, drying them with hot dry air is also an option using water