Questions about refinery commissioning purging and leak testing?
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What gases are generally used for refinery commissioning purging and leak testing? Which units are generally used in oil refining production, and what are the pressure requirements for nitrogen? If an accident occurs in the refining process and nitrogen protection is required, what is the approximate buffer time?
It should be determined based on the medium in the pipeline, following the principles of safety and economy. Generally, there is water vapor, nitrogen, and some other inert gases. It can be applied according to the actual conditions of the enterprise; the pressure is generally between 1.0–1.5 MPa, with 1.2–1.3 MPa being the ideal value
The media commonly used for purging refinery units include steam, air, and nitrogen. It is determined specifically based on the materials of the pipeline equipment. The purge pressure is also determined based on the design pressure of the pipelines and equipment. Airtightness is the same as well. The duration of nitrogen protection during an accident typically lasts until the reaction temperature drops below that required for the reaction to proceed