In industries that rely on the storage and handling of liquids and gases, ASME tanks play a critical role. These tanks—certified to meet the stringent American Society of Mechanical Engineers (ASME standards)—are designed for various applications, including industrial, commercial, and municipal use.
Tank-building companies and the field-erected tanks they build often focus on ASME-certified solutions due to their safety and durability. A tank built to ASME standards typically may indicate that it’s a pressure tank, and is specifically designed to store materials at high pressure—often used in chemical plants, refineries, and natural gas storage facilities.
Understanding these tanks is essential to ensure compliance with industry regulations and operational efficiency. This article explores the sizes of ASME tanks, their applications, and how they compare to other tank types.
What Size Are ASME Tanks?
ASME tanks can be built in a wide range of sizes, designed to accommodate diverse industrial and commercial needs. From small-capacity tanks for localized applications to massive field-erected structures, these tanks are tailored to each specific use.
General sizes include:
- Small tanks: Commonly used for residential propane storage, these tanks usually range from 120 to 500 gallons.
- Medium tanks: Typically used in commercial environments, these tanks range from 500 to 2,000 gallons.
- Large tanks: Often found in industrial applications, sizes can easily exceed 50,000 gallons, especially in field-erected tanks, which are constructed on-site to specification rather than being shop-built.
Compliance with ASME tank standards ensures each tank is designed to withstand specified pressures and environmental conditions. Whether used for propane storage or industrial processes, these tanks are subject to strict design specifications and safety standards due to the risks associated with storing pressurized liquids. For instance, they must meet the requirements outlined in ASME standards, such as the ASME Pressure Vessel Code PDF.
What is an ASME-Rated Tank?
An ASME-rated tank is a storage vessel certified to meet rigorous ASME standards. These tanks are often used in high-pressure environments, including chemical plants, oil refineries, and HVAC systems.
ASME-rated tanks are essential when pressure exceeds the limits of standard tanks. For example:
- ASME propane tank sizes are certified for the safe storage and transport of propane in residential and commercial settings.
- Expansion tanks in HVAC systems must meet specific criteria, like having the capacity to accommodate the volume change of fluid when the temperature varies. This is why ASME-rated expansion tanks are required in systems where pressure can fluctuate.
The choice between ASME- vs non-ASME-rated expansion tanks should often depend on the application. Non-ASME units may not undergo the same scrutiny, which may lead to increased maintenance and shortened tank longevity. For high-pressure environments, ASME-certified tanks offer superior safety and durability.
What Is the Difference Between ASME and DOT Propane Tanks?
While both ASME and DOT propane tanks are used for storing and transporting propane, they differ significantly in design and application:
- ASME tanks are designed for stationary use and must meet the criteria outlined in the ASME Pressure Vessel Code PDF. link
- DOT propane tanks, regulated by the Department of Transportation, are portable and are designed and used for transport.
ASME propane tank regulations require tanks to be permanently mounted, making them appropriate for long-term installations. In contrast, DOT propane tank regulations prioritize safe portability for temporary or mobile applications. They have established limits on the amount that can be transported, filling capacity and valve positioning among many other considerations.
For industrial users, understanding the distinctions between these tank types ensures proper compliance and optimal performance.
What Are ASME Tanks?
ASME tanks, certified to meet stringent ASME Pressure Tank Standards, are engineered to handle pressurized contents safely. These tanks are vital in industries such as:
- Chemical processing: Storing and transportation of hazardous materials.
- Energy production: Supporting processes like gas compression and storage.
- HVAC systems: Acting as expansion tanks to manage pressure changes.
When systems require precise pressure management, ASME-rated expansion tanks are indispensable, as they adhere to rigorous safety and quality protocols.
What Is the Difference Between ASME and API Tanks?
Another important distinction regarding storage tanks is between ASME and API tanks:
- ASME tanks are pressure vessels designed for high-pressure environments and follow the requirements as outlined in ASME Pressure Vessel Code PDF.
- API tanks, governed by the American Petroleum Institute, are primarily used for atmospheric pressure storage. This means there is no need for additional reinforcement of the tank to handle internal pressure. Industries including agriculture, water treatment, and crude oil utilize API tanks.
Understanding these differences helps determine the appropriate tank type for an application, ensuring compliance and efficiency.
A cornerstone of modern industrial operations, ASME tanks offer safety, durability, and compliance with stringent standards. From small, residential propane tanks to massive, industrial pressure vessels, their versatility makes them an invaluable resource across industries, whether shop-built or field-erected tanks.
Contact Kennedy Tank today to discover how 125 years of experience with storage tanks—including ASME-specific expertise—can guide your storage and pressure management needs.
