Assessing Pressurized Tanks For Reuse

Although pressurized tanks are often used for highly sensitive operations, there are times when a small amount of damage or a welding repair won't have a major effect on stored content quality. As you assess your pressure vessel, consider a few inspection points to help you decide whether to repair, replace, or leave alone.

Contamination, Air Pollution And Dents

Some contents such as foods and drinks may change dramatically with denting in the pressurized containers. It isn't always a leak in the storage system; if your system pushes a specific amount of liquid to fill the tank, there may be additional air of questionable content added to fill the dent difference.

Even if the dent is pointing drastically inwards, there's still a danger of contamination. Uneven filling may cause certain loads to have higher or lower air content. Even if the tank pressure is at proper measurement, contamination can begin to take place. For food products, issues such as botulism can be created within your facility, even if other health and safety standards are practiced near perfection.

In cases of contamination and uneven pressure distribution, it's best to have the vessels replaced. If your process requires specific vessel dimensions for getting the right mixture or fitting into specific buildings, a pressure vessel fabrication team can help you design the right vessel for your system.

Is Welding Worth It?

Welding is sometimes required for sealing a pressurized vessel when time is of the essence, but is it a long term solution? Only if your contents are not constantly testing the strength of your vessel.

The nature of a pressurized vessel is that of giving a constant, significant outward force that tests every square inch of the vessel. A welded patch may be alright for creating a perfect seal for inside contents under low pressure, but a compressed content system may lead to an eventual burst.

Depending on the pressure, welded material may eject from the rest of the vessel, becoming a lethal projectile while spilling the contents. If your pressurized contents are constantly testing the integrity of your vessel, it may be best to have a new vessel fabricated instead.

Even low pressure contents may be better in a new vessel. Not all welding jobs are performed equally, and if you're relying on a perfect seal your local welder may miss a few spots. Even a low pressure application can weaken or break the welding job. Air will be able to enter the system, and a collapse may happen.

If you need help with assessing your vessel situation and getting a fabricated vessel made, contact a pressure vessel fabrication professional like Moss Fabrication Ltd.