Checking heat exchangers for leaks
for the dairy industry
Heat exchangers are essential in milk processing, serving crucial functions such as heating, pasteurization, and cooling. Maintaining the optimal temperature throughout these processes is paramount to guaranteeing the excellence of the final dairy product.
Heat exchangers are subjected to harsh operating conditions that increase their susceptibility to wear and corrosion. Factors like:
The consequences of a defective heat exchanger extend beyond equipment failure. The presence of pathogenic microorganisms can proliferate in the finished milk product, posing significant risks to its safety. This increases the likelihood of spoilage, product returns, and customer complaints, leading to substantial financial losses, potential legal issues, and damage to the company’s reputation.
To mitigate these risks, regular rechecking the heat exchangers for tightness is essential. This re-verification of heat exchangers, carried out by employing engineering techniques, ensures the integrity of the heat exchanger’s structure. By confirming that the heat exchanger remains tightly sealed, manufacturers can uphold the bacteriological purity of milk, maintain product quality, and prevent potential financial, legal, and reputational losses
< 30 microns
> 30 microns
A non-flammable and non-toxic gas mixture is used, which does not contaminate the heat exchanger. The N2H2 gas test is suitable for the dairy industry. The methodology eliminates media overflow and dilution of the refrigerant, and minimises user error.
The dye or hydraulic test requires water, increasing its consumption for purposes unrelated to finished product manufacture. Gas testing is energy efficient.
Highly sensitive equipment does most of the work. The labour required by the operating staff is reduced by up to 95%, as no disassembly of the equipment is required.