FAQ
Vacuum rated tanks for industrial processes Vacuum rated tanks are designed to withstand negative pressure without deforming. Unlike standard tanks, these tanks are sized for vacuum conditions that may occur during emptying, cooling or internal process reactions. Processöverskott offers vacuum-rated tanks in stainless steel 304 and acid-resistant 316 in various designs for industrial processes in […]
Design pressure and working pressure in pressurized tanks Design pressure and working pressure are two concepts used in the design and classification of pressurized tanks and pressure vessels in industry. Working pressure refers to the pressure at which the tank is normally used under operating conditions, while design pressure is used as a design parameter […]
Hydrostatic testing of pressure vessels Hydrostatic testing is a method used to check the compressive strength of pressurized tanks in the process industry. In the test, the tank is filled with water or other liquid and subjected to a pressure exceeding the intended operating pressure. The method can be used to identify, for example, leaks, […]
When is a pressure vessel certificate required for industrial tanks Pressure vessel certificate is a document that can demonstrate that a tank or vessel has been designed and checked according to the relevant requirements for pressurized systems. Such a certificate may be relevant when a tank is used under pressure and is subject to regulations […]
What the PED Directive means for pressure vessels The Pressure Equipment Directive (PED) is an EU regulation governing the design, manufacture and CE marking of pressure vessels and pressure receptacles in industry. The directive ensures that pressure vessels meet safety, strength and documentation requirements when used under pressure. Function and structure PED-rated pressure vessels are […]
How thick sheet metal is used in large industrial tanks The plate thickness in larger industrial tanks is influenced by several factors, such as the volume of the tank, possible pressure conditions, choice of material and the environment in which the tank is used in the process industry. For stainless steel storage tanks and pressure […]
How galvanic corrosion occurs between different metals in pressure vessels Galvanic corrosion is an electrochemical process that can occur when two dissimilar metals come into contact with each other in the presence of a conductive liquid, such as water or chemical solutions. In pressure vessels and process tanks, this can mean that the less noble […]
What is point corrosion in acid-resistant steel? Spot corrosion is a localized form of corrosion that occurs on the surface of acid-resistant steel when the protective passive oxide film breaks down. The corrosion often appears as small but deep attacks in the material and can be difficult to detect before the damage has become extensive. […]
How chlorides affect corrosion in stainless steel storage tanks Chlorides are a common cause of corrosion in stainless steel storage tanks and pressure vessels. Although stainless steel 304 and acid-proof 316/316L have good corrosion resistance, chlorides can affect the protective surface layer of the material and lead to, for example, pitting and crevice corrosion. The […]
When to choose 316L over 304L in process tanks? The choice between 304 and 316 stainless steel in process tanks is often based on factors such as the chemical properties of the liquid, hygiene requirements and operating conditions. Both materials are low-carbon variants of stainless steel, which can reduce the risk of impact in welded […]
The difference between stainless 304 and acid-proof 316 in tank structures The difference between 304 stainless steel and 316 acid-resistant stainless steel is mainly about corrosion resistance, chemical resistance and application. Both materials are used in industrial process tanks and storage tanks, but AISI 316 contains molybdenum which provides better protection against chlorides, acids and […]
Can you build modular tank systems? Yes, it is possible to build modular tank systems in the process, food, chemical and water treatment industries. A modular tank system means that several tanks and components are built as stand-alone units (modules) that are then connected to form a larger, flexible system. This provides scalability, easier installation […]