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This article will explain in detail what ldar testing is, and the content of the article is of high quality, so the editor will share it with you for reference. I hope you will have a certain understanding of the relevant knowledge after reading this article.

Ldar detection means leak detection and repair. LDAR detection is a practical method that uses special gas detection instruments to detect the concentration of volatile organic compounds (VOCs) such as equipment and pipeline assemblies, regularly check for leakage, and replace or repair leaking components within a specified time to reduce VOC emissions.

The ldar test means

LDAR detection is the abbreviation of leak detection and repair (Leak Detection and Repair). LDAR detection is a practical method that uses special gas detection instruments to detect the concentration of volatile organic compounds (VOCs) such as equipment and pipeline assemblies, regularly check whether there is leakage, and replace or repair the leaking components within a specified time to reduce VOC emissions. (smoke on-line monitoring equipment)

The leakage control objects of equipment and pipeline components refer to all kinds of devices and equipment containing volatile organic compounds (Volatile Organic Compounds,VOCs) materials (gas / steam, light liquid, heavy liquid). Including valves, flanges, pumps, compressors, compressor sealing system exhaust pipes, pressure relief devices, open valves or open pipelines, agitator seals, passage door seals, exhaust pressure relief pipes of sealing systems, pressure relief pipes of accumulators, storage tank ventilation pipes and other pipe connections.

It is suggested that leak detection and repair technologies should be carried out in petroleum refining, petrochemistry, chemical industry, pharmaceutical manufacturing, surface painting, printing and packaging, etc.

The technical significance of LDAR detection: VOCs can participate in atmospheric photochemical reaction, which dominates the main chemical process of ozone pollution in urban areas, and is also one of the important precursors of secondary organic aerosols.

Therefore, in urban and regional air quality management and pollution control, the research of atmospheric VOCs and pollution prevention and control is very necessary. In addition to the traditional organized emissions, it is necessary to take into account the volatile characteristics of VOCs substances and pay attention to the control of unorganized emission sources. In some industries such as petrochemical industry, even more than 70% of VOCs emissions come from unorganized emissions. Leakage of equipment and pipe valves is the second largest unorganized source of VOCs after storage and transportation.

According to the statistics of the US Environmental Protection Agency, the implementation of LDAR measures in petrochemical plants can reduce unorganized emissions by about 63%, while chemical plants can reduce unorganized emissions by about 56%, bringing huge environmental benefits.

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