Pressure vessels - Assignment Example

Assignment II: Modelling Fatigue in Thick Wall Pressure Vessel 1 Pressure vessels “A closed vessel in which pressure is obtained from an external source, or from an indirect application of heat, including but not limited to, evaporators, heat exchanges or vessels in which steam is generated incidental to the operating of a processing system containing two or more vessels.” (Boiler and Pressure Vessel Safety Rules: Pressure Vessels. 2008). Functions and usage: Pressure and vacuum systems are used in many laboratory and industrial operations, and storage, use, and transportation of chemicals, compressed gases, petroleum products etc. Canadian steam boilers and pressure vessel Act, R.S, c.444, s.1 define pressure vessel as an “unfired vessel used for containing gas, air or liquid and having an internal or external pressure in excess of fifteen pounds per square inch and having an inside diameter of more than six inches.” (Steam Boiler and Pressure Vessel Act: Interpretation. 1989). Pressure vessels are boilers and storage tanks and high pressure vessels function under greater than normal amounts of pressure without compromising seals or bursting. Stainless steel pressure vessels are used as storage, mixing, jacketed and reactor tanks in food and beverage processing, pharmaceutical production, and other sanitary applications. (Pressure Vessels: Find Pressure Vessels Manufactures. 2009). 1.1.1 Classifications: There are primarily two classes of Pressure vessels, such as thick-walled and thin-walled, which are differentiated by their ratio between shell thickness and radius. ASME Rules for the construction of pressure vessels define ‘Code vessels’ as “containers for the containment of pressure with 15 psi Read More