Cleaning of carbon steel equipment before use
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What needs to be done before putting carbon steel equipment back into use if it has not been used for a long time? Is it necessary to use a high-pressure water gun for cleaning? Thank you very much
It depends on what medium is inside your device What are the operating pressure and temperature? Different working environments result in different medium standards. The general grades, from lowest to highest, are: water flushing, steam purging, industrial air purging; nitrogen purging may also be required if necessary.
If it hasn’t been used for a long time and is about to be used as a pressure vessel under high pressure, then you might consider conducting a thorough inspection first; this will ensure that it can be used safely. If the pressure is low, at least a thickness measurement should be carried out first. As for whether a hydrostatic test is necessary, it’s best to consult a professional. As for purging and ensuring airtightness, those are obviously essential