Tanks made of stainless steel are used to hold and store a variety of substances including food, beverages, chemicals, gas and water. They are usually cylindrical, like drums, but their shape and orientation often varies-tanks are either horizontal or vertical and may hold anything from 1 gallon to millions of gallons. Stainless steel is chosen because of its corrosion resistance, which makes it useful in the storage of hazardous substances, resistance to strong temperatures, strength, and simple to manufacturing and cleaning.
Stainless steel has good thermal conductivity and thermal expansion rate, which is key to tanks of any sort, and particularly useful in the case of pressure vessels. Manufacturers of stainless steel tanks supply numerous industries, including agricultural, food and beverage processing, medical, chemical and waste water and sewage management. They are commonly used where hygiene and corrosion are concerns. There are many different types of stainless tanks that differ in properties depending on their applications. SS tanks always contain openings called manways, where contents are poured or accessed. Stainless steel storage tanks are used to hold liquid or gas, usually in larger quantities. They are often used in the agricultural industry as stainless steel silos, which usually store animal feed and crops, in breweries and wineries as stainless steel vats, or as stainless steel bins, which are used in for a number of different applications, including waste receptacles and kitchen storage. Tanks are also used to blend different substances together. These stainless steel mixing tanks combine ingredients by a motor-powered propeller. Stainless steel water tanks are specifically for holding large supplies of water, stainless steel gas tanks are used in automobiles to hold fuel, and food grade tanks are made specifically to hold perishable items that need a clean, sterile and temperature controlled storing environment, like dairy tanks.
Many stainless steel tanks are manufactured specially for the dairy, food and beverage industries. Stainless steel is the material of choice because it is easily temperature controlled, cleaned and sterilized. They are often vertical silos, horizontal or vertical storage tanks, processing tanks, mixers, whey crystallizers and CIP agitators. They must adhere to strict FDA, USDA and 3-A standards for health reasons. Tanks used to house and manufacture foods are cleaned every time they are emptied and must maintain certain temperatures if they are holding perishable food items. Mixers are often used in food processing to stir and combine large amounts of ingredients. Leaking of storage tanks is always a big concern. Toxins can seep into surrounding vegetation and underground water supplies. Tanks should be regularly tested, either by pressure testing, subsurface testing or full tank removal. Emergency bilge pumps are designed to deal with leakages. They can pump out the rest of the fluids in a leaking tank or soil content that is contaminated. Submersible pumps are designed to be installed completely immersed within a tank. Oil-filled cavities of submersible pump motors protect them from contact with the transfer media. Submersible pumps can treat groundwater, extract pollutants or even remove the fluids completely.
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vessel, while a tank that holds substances
at pressure levels lower than 14.7 psi is considered a vacuum.
- Fracture of certain steels associated with exposure to very low temperatures, often in circumstances in which stress levels have not exceeded yield strength.
- Fixtures that provide an efficient and effective way of cleaning a tank without taking it apart. CIP fixtures include sprayballs, dishes and T-balls.
- A number given to pressure vessels shipped to Canada.
- A stainless steel coating applied to a lower-alloy steel to increase corrosion resistance. Cladding costs less than using stainless steel exclusively and can be applied by pouring, welding or coating.
- An increase in vessel shell thickness designed to compensate for the corrosion and abrasion of certain pressure vessels. Protective coatings and linings are also added to pressure vessels to prevent corrosion.
- Permanent deformation of steel caused by strength reduction resulting from exposure to high temperatures.
- A type of stainless steel comprised of austenic and ferretic steel, the combination of which is stronger than either of the individual metals. Duplex steels are extremely corrosion and crack resistant.
- The removal of imperfections on the surface of stainless steel by dissolving the steel in a solution of electrolytes through which a current of electricity travels.
- Federal organization responsible for the regulation of food, drugs, medical equipment, cosmetics, etc. The FDA also regulates the storage of such products and maintains standards for stainless steel tanks used in applications involving these products.
- The build-up of deposits comprised of marine organisms that occurs on submerged metal surfaces.
- A measurement of the thickness of steel.
- Access port to the internal region of the tank or pressure vessel.
- Worldwide standard for pressure vessel inspection, alteration and repair.
- Unit that measures the amount of pressure applied to an object. Psi reflects the amount of pressure under which a pressure vessel substance remains.
- The piping systems between pipes that are interconnected and able to be cleaned.
- Type of steel containing 10 to 12 percent of chromium. Stainless steel is a common choice for tanks because of its corrosion and temperature resistance.
- Federal organization regulating many aspects of the agricultural industry. The USDA regulates food supply and promotes the safe processing and storage of meat, dairy products, etc., and maintains strict standards for stainless steel sanitary and dairy tanks.