STORAGE TANKS
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FRP storage tanks design consultants-wisdom engineering
FRP STORAGE TANKS DESIGN & ENGINEERING SERVICES
What is our Services?
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Design Calculations:
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GA (General Arrangement) Drawings: .
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Detail Drawings:
What is FRP storage tank Design ?
FRP (Fiberglass Reinforced Plastic) storage tank design involves several key considerations to ensure the tank meets structural, safety, and operational requirements.
Material Selection: FRP tanks are composed of a matrix of resin and fiberglass reinforcement. The choice of resin (e.g., polyester, vinyl ester, epoxy) depends on factors such as chemical resistance, temperature tolerance, and mechanical properties required for the specific application.
Structural Design: The tank must be designed to withstand internal and external loads, including the weight of stored material, pressure differentials, wind loads, seismic forces (if applicable), and vacuum conditions. Factors of safety are typically applied to ensure structural integrity.
Tank Selection & sizing: The tank's shape and dimensions are important considerations, affecting both structural integrity and operational efficiency (e.g., ease of cleaning, mixing, or accessing contents). Common shapes include cylindrical, rectangular.
Nozzle and Fitting Design: Proper design of nozzles and fittings for inlet, outlet, vents, and other connections ensures they are compatible with the tank material and capable of withstanding operational pressures and stresses.
Supports and Foundations: Support structures (e.g., skirts, saddles, or concrete bases) must be designed to bear the weight of the tank and its contents, considering local soil conditions and environmental factors.
Installation and Maintenance: Design should facilitate safe installation and maintenance practices, including provisions for inspection, cleaning, and repair throughout the tank's lifecycle.
Safety Features: Depending on the application, additional safety features such as leak detection systems, pressure relief devices, and secondary containment structures may need to be incorporated into the design.
Which Design Codes used in FRP storage tank Design ?
Design Codes : FRP (Fiberglass Reinforced Plastic) storage tanks involves adherence to specific codes and standards to ensure safety, reliability, and compliance with regulatory requirements.
ASME RTP-1: Reinforced Thermoset Plastic Corrosion-Resistant Equipment. This standard by the American Society of Mechanical Engineers (ASME) outlines design, fabrication, inspection, and testing requirements for FRP tanks and vessels intended for corrosive environments.
BS EN 13121: GRP tanks and vessels for use above ground - Part 1: Raw materials; Part 2: Design and workmanship; Part 3: Fabrication and testing. This European standard provides requirements for the design, fabrication, testing, and inspection of GRP (Glass Reinforced Plastic) tanks and vessels.
BS 4994:1987 is a British Standard that specifies the design and construction requirements for vessels and tanks made of thermosetting reinforced plastics (commonly known as fiberglass or GRP - Glass Reinforced Plastic). Here are the key aspects covered by BS 4994:1987:
Designing for internal pressure in the context of FRP (Fiberglass Reinforced Plastic) tanks involves ensuring that the tank structure can withstand the stresses induced by the pressure exerted by the stored fluid.
Designing for external pressure in FRP (Fiberglass Reinforced Plastic) tanks involves ensuring that the tank structure can withstand the stresses induced by external forces acting on the tank walls.
Designing the shell of an FRP (Fiberglass Reinforced Plastic) tank involves determining the appropriate thickness, reinforcement, and structural features to ensure the tank can withstand internal pressure, external loads, and other operational stresses.
Designing the bottom plate of an FRP (Fiberglass Reinforced Plastic) tank involves ensuring it can support the weight of the tank contents, withstand external loads, Calculate the required thickness of the bottom plate to withstand these loads
Load Analysis
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Determine the loads acting on the bottom plate, including:
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Dead Loads: Weight of the tank shell, fittings, and any permanent equipment.
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Live Loads: Weight of the stored fluid (hydrostatic load), as well as dynamic loads from fluid movement.
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External Loads: Consider external loads such as soil pressure (if buried) or foundation support conditions.
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Designing the skirt support for an FRP (Fiberglass Reinforced Plastic) tank involves ensuring it provides adequate structural support to withstand the weight of the tank and its contents, as well as external loads such as wind or seismic forces.
Designing leg supports for an FRP (Fiberglass Reinforced Plastic) tank involves ensuring they provide stable and reliable support for the tank while accommodating various loads and environmental conditions.
Designing saddle supports for an FRP (Fiberglass Reinforced Plastic) tank involves creating robust structures that securely cradle the tank, providing stable support while distributing loads evenly to prevent stress concentrations
What is the types of FRP tanks ?
FRP (Fiberglass Reinforced Plastic) tanks are widely used in various industries due to their durability, corrosion resistance, and lightweight properties. There are several types of FRP tanks based on their design, purpose, and construction method.
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Vertical FRP Tanks: These tanks are designed to stand vertically and are used for storage of liquids such as water, chemicals, acids, and other corrosive substances. They are often cylindrical in shape and can vary in size from small units to large tanks used in industrial applications.
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Horizontal FRP Tanks: Instead of standing vertically, these tanks lie horizontally on the ground or on supports. They are used when space constraints or operational requirements dictate a different orientation. Horizontal FRP tanks are also used for various liquid storage purposes.
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Rectangular FRP Tanks: Unlike cylindrical tanks, these tanks have a rectangular or square cross-section. They are used in applications where space utilization is critical or where the tank needs to fit into a specific area of a facility.
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Underground FRP Tanks: These tanks are designed to be buried underground, offering storage for various liquids while minimizing the footprint above ground. They are used in applications where space is limited or where aesthetics dictate that the tanks remain out of sight.
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Transport FRP Tanks: These tanks are designed specifically for transporting liquids. They are often mounted on trailers or trucks and are used in industries such as chemical transport, agriculture (e.g., liquid fertilizers), and water delivery.
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Dual Laminate FRP Tanks: These tanks combine the benefits of FRP with other materials such as PVC, CPVC, or PVDF. The outer layer is typically FRP for structural integrity and corrosion resistance, while the inner layer is made of another material suited for the specific chemical being stored.
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Customized FRP Tanks: Depending on the specific requirements of a project, FRP tanks can be customized in terms of shape, size, fittings, and reinforcements. This flexibility allows for tailored solutions to meet unique industrial needs.
Why FRP storage tank for water, chemical and acid storage ?
FRP (Fiberglass Reinforced Plastic) storage tanks are commonly used for water storage due to several advantageous properties:
Corrosion Resistance: FRP tanks are highly resistant to corrosion from chemicals and salts, making them suitable for storing water in environments where corrosion is a concern, such as coastal areas or industrial settings.
Lightweight: Compared to traditional materials like steel, FRP tanks are lightweight yet strong, making them easier to transport, install, and handle during maintenance.
Strength and Durability: FRP tanks have a high strength-to-weight ratio, meaning they are strong and durable while being relatively light. This strength ensures the tank can withstand various environmental conditions and loads over its lifespan.
Long Lifespan: Properly manufactured and maintained FRP tanks can have a long service life, often exceeding that of metal tanks, as they do not rust or degrade in the same way.
Design Flexibility: FRP tanks can be easily molded into various shapes and sizes, allowing for customization to fit specific storage needs. They can also incorporate features like partitions, baffles, and fittings as required.
Maintenance: FRP tanks typically require less maintenance compared to metal tanks since they do not corrode or require protective coatings. Routine inspections and cleaning are usually sufficient to maintain their integrity.
What is the advantage of FRP underground storage tanks ?
FRP (Fiberglass Reinforced Plastic) underground storage tanks are specifically designed and manufactured for various applications where underground storage of liquids is required.
Corrosion Resistance: One of the primary advantages of FRP underground tanks is their excellent resistance to corrosion. They are highly resistant to corrosion from soil conditions, moisture, and chemicals present in the ground. This makes them ideal for storing liquids that could corrode or degrade metal tanks over time.
Leak Prevention: FRP tanks are manufactured using seamless construction techniques or with minimal joints, reducing the risk of leaks compared to tanks made from materials that may be susceptible to corrosion or structural failure.
Lightweight and Strong: FRP tanks have a high strength-to-weight ratio, making them strong yet lightweight. This characteristic facilitates easier transportation, handling, and installation of underground tanks.
Longevity: When properly designed, installed, and maintained, FRP underground tanks can have a long service life. They are not susceptible to rusting or degradation from environmental factors that can affect metal tanks.
Customization: FRP tanks can be customized in terms of size, shape, and configuration to fit specific site requirements and storage needs. This flexibility allows for easier integration into existing infrastructure or specific project constraints.
Environmental Protection: Underground storage tanks need to meet stringent environmental regulations to prevent leaks and contamination of soil and groundwater. FRP tanks are favored for their ability to effectively contain stored liquids without risk of leakage or environmental damage.
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Cost-Effectiveness: While initial costs may be higher compared to some alternatives, such as steel tanks, the long-term cost-effectiveness of FRP tanks can be significant due to their durability, minimal maintenance requirements, and longevity.
Why double wall frp tank design ?
The double wall design for FRP (Fiberglass Reinforced Plastic) tanks offers several advantages and is commonly used in applications where safety, environmental protection, and regulatory compliance are critical factors.
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Enhanced Leak Detection: Double wall tanks have an inner tank (primary containment) and an outer tank (secondary containment) with an interstitial space between them. This design provides an additional layer of protection against leaks. If a leak occurs in the primary tank, the secondary containment can capture the leaked liquid before it reaches the environment. This interstitial space allows for leak detection monitoring systems to be installed, enabling early detection and mitigation of leaks.
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Environmental Protection: The primary purpose of the secondary containment in double wall tanks is to prevent leaks from reaching the environment. This is especially important for storing hazardous liquids such as chemicals or fuels, where any leakage could lead to environmental contamination and regulatory violations.
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Regulatory Compliance: Many environmental regulations and standards require secondary containment for storing hazardous substances. Double wall FRP tanks help facilities comply with these regulations by providing a reliable method to contain leaks and prevent environmental damage.
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Reduced Risk of Corrosion: The outer wall of double wall FRP tanks provides an additional barrier against corrosion. FRP is inherently resistant to corrosion, but the secondary containment further enhances protection against environmental conditions and potential external damage.
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Long-Term Cost Savings: While double wall FRP tanks may have higher initial costs compared to single wall tanks, they can result in long-term cost savings. The prevention of environmental contamination and the associated cleanup costs from leaks can outweigh the initial investment.
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MANWAY for storage tank design
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frp pickling tank
FRP (Fiberglass Reinforced Plastic) pickling tanks are specifically designed containers used in industrial processes for pickling metals, such as steel, aluminum, and other alloys. Pickling is a process that removes impurities, stains, rust, and scale from the surface of metals to prepare them for further processing or finishing. Here’s why FRP pickling tanks are preferred for this application:
FRP tank for HCL storage
FRP (Fiberglass Reinforced Plastic) tanks are frequently used for storing hydrochloric acid (HCl) due to their excellent resistance to corrosion from acids and their ability to withstand the specific challenges posed by HCl storage.