In what situations can pressure vessels be manufactured without inspection holes?
Thread Content
In what situations can pressure vessels be manufactured without inspection holes?
The upper and lower flanges of the cylinder are aligned and installed together.
Pressure vessels that meet one of the following conditions may not require inspection holes: 1. Pressure vessels with an inner diameter of 300 mm or less. 2. The pressure vessel is equipped with removable end caps, covers, or other types of lids that can be opened and closed, and the dimensions of these end caps, covers, or lids are not smaller than those of the designated inspection holes. 3. Pressure vessels with no corrosion or minor corrosion that require no internal inspection or cleaning. 4. Pressure vessels for refrigeration units. 5. Heat exchanger.
It has a small volume, is covered, and may not require any openings. It depends on the requirements of the pressure vessel. For some special structures with a small volume, openings such as manholes and sight glasses are also required.
What was said on the 3rd floor is correct: Pressure vessels that meet one of the following conditions do not require inspection holes: 1. Pressure vessels with an inner diameter of 300 mm or less. 2. The pressure vessel is equipped with removable end caps, covers, or other types of lids that can be opened and closed, and the dimensions of these end caps, covers, or lids are not smaller than those of the designated inspection holes. 3. Pressure vessels with no corrosion or minor corrosion that require no internal inspection or cleaning. 4. Pressure vessels for refrigeration units. 5. Heat exchanger.