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In industries where the storage and handling of hazardous liquids or materials are involved, the implementation of proper containment measures is paramount.

Bund lining, also known as secondary containment, plays a crucial role in preventing leaks, spills, and potential environmental hazards.

This article explores the importance of bund lining and its significance in ensuring safety and compliance within industrial settings.

We will delve into the types of bund lining materials, installation methods, and the benefits it provides in terms of risk mitigation and environmental protection.

Whether you are a facility manager, an environmental engineer, or simply interested in understanding industrial safety practices, this article will provide valuable insights into the world of bund lining and its vital role in safeguarding both people and the environment.

Understanding the Importance of Bund Linings

Bund linings serve as an essential line of defense in containing hazardous liquids, acting as secondary containment systems should primary containment fail.

Typically constructed from concrete, brick, or metal, buildings must adhere to strict pollution control regulations to guarantee adequate containment capacity and impermeability to oil.

Utilizing a bund lining offers several advantages, such as containment of fluids in case of catastrophic spillage or primary containment failure, excellent chemical resistance, and the ability to withstand high temperatures.

Failure to install a polymer-based lining in a bund that contains aggressive chemicals can lead to rapid erosion of the structure, reducing the bund’s capacity to contain spills.

In essence, bund linings are indispensable in maintaining environmental safety and preventing potential disasters.

Key Factors to Consider When Choosing a Bund Lining System

When selecting a bund lining system, it is crucial to consider several key factors, including chemical resistance, durability and longevity, and compatibility with the primary containment vessel.

Each of these factors plays a significant role in ensuring the effectiveness of the bund lining system and preventing leaks and spills.

Let’s take a closer look at these factors in the following subsections.

Chemical Resistance

Chemical resistance is an essential factor when choosing a bund lining system, as it ensures that the lining material can withstand the specific chemicals it will be exposed to.

Bund linings help mitigate both erosion and corrosion of substrates, providing protection against aggressive chemicals that may otherwise compromise the integrity of the containment system.

For example, fibreglass lining systems can be installed in any weather condition, offering versatility to accommodate various project requirements and environments.

The right choice of lining material with appropriate chemical resistance can make all the difference in preventing environmental hazards and ensuring long-lasting protection.

Durability and Longevity

Durability refers to a material’s ability to withstand wear and tear over time, while longevity pertains to the duration a material can last before needing replacement.

These two factors are crucial in determining the effectiveness of a bund lining system, as they guarantee that the material can withstand regular use and provide a long service life.

Several factors can impact the durability and longevity of a bund lining, including the type of material used, the quality of the installation, the environmental conditions, and maintenance of the system.

By understanding and addressing these factors, you can ensure that your bund lining system remains reliable and effective throughout its lifespan.

Compatibility with Primary Containment Vessel

Compatibility with the primary containment vessel is a critical factor to consider when selecting a bund lining system, as it ensures that the lining material forms a secure seal with the vessel, preventing any leaks or spills.

Some popular bund lining materials include glass reinforced plastic (GRP) lining, epoxy bund linings, and polyurea bund lining, each with its own set of advantages and disadvantages.

For example, GRP lining is highly durable and resistant to corrosion, but it is more expensive than other materials and requires specialized installation.

By assessing the compatibility of the bund lining material with the primary containment vessel, you can make an informed decision that minimizes the risk of leakage and safeguards the environment.

Popular Bund Lining Materials: Pros and Cons

Now that we’ve discussed the key factors to consider when choosing a bund lining system, let’s delve into the pros and cons of popular bund lining materials, including Glass Reinforced Plastic (GRP), Epoxy, and Polyurea.

Each material has its unique properties, making them suitable for specific applications and environments.

Glass Reinforced Plastic (GRP) Lining

Glass Reinforced Plastic (GRP) lining is a combination of glass fibers and resin, offering a highly durable and chemically resistant bund lining solution.

One of the major advantages of GRP lining is its ability to provide a complete seal with no joints or seams, ensuring that the bund is impermeable to both water and the contents of the storage vessel.

The selection of resins for a fibreglass lining is based on the nature of the substance being contained and the operating environment of the bund.

However, despite its numerous benefits, GRP lining can be more costly than other materials and requires specialized installation.

Nevertheless, its exceptional durability, resistance to chemicals, and compatibility with primary containment vessels make it an attractive option for many bund lining projects.

Epoxy Bund Linings

Epoxy is a synthetic polymer with a wide range of applications, known for its toughness, excellent adhesion, and resistance to chemicals.

As a bund lining material, epoxy offers superior durability and chemical resistance, making it an optimal solution for bund lining. Furthermore, epoxy bund linings are relatively easy to install and maintain, providing a cost-effective option for many applications.

However, epoxy bund linings may not be suitable for concrete or brickwork bund lining due to the potential for movement stress cracking of the epoxy coating.

Nevertheless, their chemical resistance and durability make them a popular choice for a variety of bund lining projects.

Polyurea Bund Lining

Polyurea is a spray-applied material that offers a fast-curing process with a quick return to service, making it particularly suitable for oil storage bunds. Its benefits include swift installation time, chemical resistance, and longevity.

The use of polyurea as a bund lining material allows for a fast and economical solution that requires minimal maintenance.

However, polyurea bund lining may not be suitable for all applications, as it does not possess the same strength as other materials such as GRP.

Additionally, it is more expensive than other bund lining materials. Despite these drawbacks, polyurea bund lining remains a viable option for those seeking a fast, durable, and chemically resistant solution.

The Bund Lining Installation Process

The installation process of a bund lining system is a critical aspect to ensure its effectiveness in containing hazardous liquids.

The process typically involves four main steps: surface preparation, application, curing, and final inspection.

Proper surface preparation is essential for achieving optimal adhesion of the lining material to the substrate, while the application process varies depending on the chosen material and environmental conditions.

Trained technicians carry out the installation of bund linings, ensuring that the material adheres to the guidelines outlined in the organization’s quality and environmental management system.

A well-executed installation process is vital for the longevity and effectiveness of the bund lining system, providing an essential layer of protection against leaks and spills.

Maintaining Your Bund Lining System

Maintaining your bund lining system is crucial to ensure its effectiveness in preventing leaks and spills from polluting the environment.

Regular maintenance includes inspecting the bund lining for signs of damage, repairing any damage, and cleaning the bund lining regularly to maintain its optimal condition.

When performing maintenance, it is essential to drain and clean the bund lining system properly, and undertake any repairs or replacements according to the manufacturer’s instructions.

By dedicating time and effort to maintain your bund lining system, you can guarantee its reliability and effectiveness in safeguarding the environment.

Frequently Asked Questions

Listed below are some of the most common questions regarding Bund Lining:

What is bund lining?

Bund lining is the practice of lining the walls and bottom of a bund, or liquid containment facility, to prevent leaks or spillage from tanks and pipes. Bunds are commonly used in industrial areas as a barrier between hazardous liquids and the environment.

The lining helps protect people and the environment from potential dangers of the liquid.

What does bund mean in construction?

Bunding in construction refers to the use of a retaining wall, usually composed of earthworks material, to contain and exclude water or other liquids from a certain area. By doing this, any potentially polluting substances that might escape can be contained until a remedial action can be taken.

What is the purpose of a bund wall?

The purpose of a wall is to act as a protective barrier and contain hazardous substances such as oils, chemicals, and other pollutants. This helps protect the environment by preventing these materials from escaping into ground and surface water, thereby reducing the risk of pollution.

What is a bund in drainage?

A bund is an enclosure or embankment used to contain liquid and stop it from escaping into the environment. This means bunds act as a protective barrier to prevent spills, leakages, and overflows from contaminating surrounding land or water sources.


In conclusion, bund linings play a crucial role in preventing environmental hazards caused by the leakage of hazardous liquids.

Selecting the right bund lining material, considering factors such as chemical resistance, durability, compatibility with primary containment vessels, and longevity, is essential for ensuring the effectiveness of the containment system.

Popular lining materials such as Glass Reinforced Plastic (GRP), Epoxy, and Polyurea each offer their own unique set of advantages and drawbacks, making them suitable for specific applications and environments.

As we’ve explored the complexities of bund lining systems, it’s clear that making informed decisions and dedicating time and effort to proper maintenance are crucial for safeguarding the environment and complying with regulatory requirements.

With the knowledge and insights gained from this article, you are now better equipped to make the right choices in your bund lining projects, ensuring a safer and greener future for all.

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