Vacuum leaks in cryogenic systems: fast detection and effective solutions
Cryogenic systems rely on vacuum conditions to ensure efficient thermal insulation. When a leak occurs, even a very small one, the performance of the installation can be seriously affected, increasing product losses, energy consumption, and operating costs.
Why do vacuum leaks occur?
Leaks can arise from different causes:
Material fatigue due to thermal cycling
Microcracks in welds or joints
Aging of gaskets and seals
Mechanical vibrations
Corrosion or manufacturing defects
Over time, these factors can compromise the integrity of the vacuum system and significantly reduce its insulation performance.
What happens when vacuum is lost?
Loss of vacuum increases heat transfer into the cryogenic system, leading to:
Higher evaporation of the cryogenic product
Increased energy consumption
Lower operational efficiency
Greater equipment wear
Higher production costs
In industrial facilities, an undetected leak can have a direct impact on plant profitability.
Helium leak detection: the most reliable method
The most accurate technique for locating vacuum leaks is the use of helium as a tracer gas. Thanks to its very small molecular size and inert nature, helium allows detection of even micro-leaks that cannot be identified by other methods.
This procedure is widely recognized in industry and is carried out in accordance with international standards such as:
UNE-EN 1779 (leak detection methods)
ISO 20485 (non-destructive testing – leak detection using tracer gases)
ASME Section V for certain industrial and inspection applications
Helium leak detection enables precise localization of the leak point, reducing intervention time and maintenance costs.
CryoEngineers: specialists in cryogenic leak detection
At CryoEngineers, we have specialized equipment for helium-based vacuum leak detection in tanks, insulated piping, cold boxes, and industrial cryogenic installations.
Our service allows us to quickly identify the source of the leak and minimize its impact on production. In most cases, we can also travel and provide assistance within 24 to 48 hours.
If you suspect that your installation has lost vacuum or you have detected an abnormal increase in energy consumption, our team can help you locate and resolve the issue quickly and efficiently.
