How Bunded Diesel Tanks Work

 Bunded storage tanks have become a requirement for any business that involves storing fuel and other hazardous substances. This is primarily because of environmental concerns and industry laws and regulations. The bunded diesel tanks are by far the most reliable, safe, and effective storage system. Here is how bunded tanks work:

The Bund


The bund is a wall within the storage system or tank, which is specifically designed to prevent any spillage of the substance it contains. The bund wall, also known as the bunding, is an excellent liquid containment, preventing the liquid from spilling through the structure. In other words, this storage system is simply a tank within a tank. In the instance of any leakage, the substance will not spill directly to the environment.


Storage for Hazardous Substances


Every business involving hazardous substance, diesel, chemicals, and wastes is required to use bunded tanks as their storage system. The bunding, which is a double prevents leakage of the substances contained. These substances are extremely dangerous to the environment. Thus, the bunded system prevents any pollution, contamination, and damage to the environment and the people around.


Impervious Material


The bunding is made of materials that are waterproof and are specifically compatible with the substances it contains, avoiding any harmful chemical reactions. Most bunded diesel tanks are made of concrete because this material is durable and impervious. However, it is not recommended for liquids with strong acids, as it may cause dangerous reactions. For substances with strong acid, an additional acid resistant coating is used.


Large and Durable


Bunded diesel tanks are large and durable enough to contain the fuel. It should be able to hold 100% or the maximum capacity of the tank without any problem. Operators follow a strict capacity guide when it comes to fuel tanks, leaving enough space for the liquid not to overflow. The bunding is always greater than the 100% capacity of any tank vehicle filling it.


Prevents Rainwater Contamination


Any hazardous liquid mixed with water will be contaminated and will not be as effective anymore. The bunding is designed to prevent rainwater from entering and contaminating the substances contained.  Moreover, the bunded tanks must be stored in a roofed facility. If a roofed facility is not available, proper disposal or drainage of rainwater must be observed and implemented as recommended by regulations.


Metal Tanks and Self Bunded Tanks


If you use ordinary metal or steel tanks, an additional bunding is necessary to be placed inside the metal tank such as linings, drums or spill pallets, acting as the bund wall. However, if you are using a self bunded tank, which already has a built-in bunding, there is no need for the additional facility anymore. Self bunded tanks are made to meet environmental and industry requirements. Therefore, it is suitable for storaging fuel and other hazardous liquids.

Types of Oil Rigs for Offshore Drilling

Offshore drilling rigs come in many different forms, designs, and sizes. Each types is designed to operate under certain conditions and circumstances. You’ll find rigs that are intended for very deep waters while others are for shallow waters. There are also rigs that are designed specifically for some parts of the world with highly unpredictable and extreme weather. An oilrig is typically built or hauled on the spot where the exact location of the oil source is.

The main types of offshore drilling machines that you can find in the industry are as follows:



For shallow bodies of water, which are normally less than 80 ft., you need to use the submersible drilling rigs that are highly mobile and versatile machines. You transport a submersible rig platform to the exact drilling location by towing it. Then you sink it until it reaches the bottom most part of the ocean floor. The rig is kept in place because of the weight of the structure. However, heavy-duty anchors might be necessary in certain areas to secure the platform in place.


Drill ship

Drill ships in essence, are self-powered drilling rigs that are made as either a newly built or a remodeling of an old vessel. These modern ships depend on the latest advance automated technology and control systems for them to remain in place over the drill location, which makes these refurbished vessels more reliant on regular anchor systems. Because drill ships are fully equipped with the modern technology responsible in keeping their position, they are highly efficient for use in the waters wherein other types of rigs might not be able to operate.



A jack-up drilling rig is ideal for deep-water operations because it is equipped with specialized legs that are able to submerge deep below the surface. Once the platform is positioned over the drill location, its legs go under water to stabilize the machine. These rigs are hauled and set up fully into position. They can operate in very deep waters, mostly in areas as deep as 650 ft. or more. Upon reaching the ocean surface, the rigs will continue to jack-down until it reaches a sufficient distance above the ocean surface, which is usually in the area of 50 ft.


Production platform

Production platforms are part of permanent structures. They are made on sites that have been confirmed to offer substantial amounts of gas or oil deposits. Once these rig platforms are constructed on the drilling location, they become immobile structures. These machines cannot be relocated to a new site. This type of drilling rig is built and used only for areas that are identified as abundant with the resource.



Operating oil rigs require sufficient knowledge and skills for the trade, and being familiar with the types of machines used is the first step in doing it right. Understanding the different types and designs of offshore rigs can help you do your work better, and help you choose the appropriate equipment for the job.