How To Avoid A Cylinder Depressurisation Safety Incident

How To Avoid A Cylinder Depressurisation Safety Incident

 

When dealing with any Hydraulic machinery, the most important thing to do is be aware of your equipment’s capacity for the workload in front of you. One of the industry’s more challenging yet underlooked processes is the disconnection of hoses and subsequent oil draining of a hydraulic cylinder. This process is the direct cause of various dangerous incidents, as many engineers are unaware of the safety precautions. Today we will be breaking down an incident which is regularly used as an example for this subject; focusing on precisely what happened and how it could have been prevented.

While on a callout to replace the seals on a hydraulic cylinder, a technician tried to depressurize the system. The cylinder, at the time, was being pressured by up to nine thousand pounds per square inch; however, when the technician tried to release this pressure, the plunger could not retract. The technician checked the pressure gauge, which read zero.

Committed to the task at hand and with the help of a colleague, the technician began to disconnect the fitting with his wrench. Before they knew what was going on, the fitting exploded due to the build of pressure and knocked the two technicians to the ground before drenching them in oil. Thankfully, neither technician was seriously injured. However, the situation called for an investigation as the outcome could have been fatal.

If a hose is not fitted correctly, pressure can enter the cylinder and cause a build-up. When the technician saw the gauge was zero, he presumed, based on the information in front of him, that it was safe to release the pressure. However, the indicator did not account for the tension in the cylinder.

There are various methods and tools for preventing something like this from happening. However, one of the most reputable solutions on the market is what is known as a Bleed Tool. A Bleed Tool, such as the Enerpac CT-604, can be used on couplers to help depressurize hoses and cylinders in the safest way possible. By implementing a tool like this into your arsenal, you increase your efficiency and prevent risk of disaster.

The moral of the story is that when in doubt, you should always expect the worst, especially when dealing with highly pressurised hydraulic machinery and equipment. And of course, it is always wise to invest in the necessary equipment. Not only will it increase efficiency, but it might just save your life.

Follow all the above and avoid a cylinder depressurisation safety incident.

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Norbar EvoTorque® PTS-80 Series

The PTS is the result of an extensive design project to produce an efficient air motor, purpose built for this application in an accurate torque tool.

How To Avoid A Cylinder Depressurisation Safety Incident

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The PTS is the result of an extensive design project to produce an efficient air motor, purpose built for this application in an accurate torque tool.

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How To Avoid A Cylinder Depressurisation Safety Incident

 

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How To Avoid A Cylinder Depressurisation Safety Incident

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