Precautions when releasing nitrogen and performing secondary nitrogen filling for newly installed equipment
Thread Content
Dear seniors, after the static equipment in the newly built plant is inspected, some of it needs to have the nitrogen filling removed, allowing operators to conduct inspections, followed by another nitrogen filling for protection. What are the specific precautions for each of these three steps?
In addition to the precautions for pressure operation, it is important to be aware of the risk of nitrogen asphyxiation. Especially in work in confined spaces, an internal analysis must show that the oxygen level is not lower than 20%, and a ventilator must be installed to ensure proper air circulation. Specific details are unknown; for reference only.
To release the nitrogen charge, it is necessary to prevent local concentration caused by the displacement of nitrogen, in order to achieve a low oxygen content. Do not introduce moist air or other dirty contaminants. Operators must follow the standards for working in confined spaces when entering. For the second nitrogen filling, the air inside the equipment must first be replaced before nitrogen is introduced to the specified pressure, which can be 0.1 Mpa. Then just seal it and check the pressure gauge.
Thanks for the advice(*°?°)=3
Thank you, senior\ud83d\ude00