Leaking fluid systems impose a heavy cost on industry. Increased fluid consumption, accelerated component wear, unnecessary production losses, increased slippage and fire safety hazards and fluid containment and cleanup are among the leakage related costs. Leaks are caused by worn or damaged seals, broken lines and hoses, vibration damage, poor component quality, improper installation, material incompatibility problems, etc. Leaked fluid tends to accumulate on surrounding surfaces, making the source of the leak difficult to locate. Without help, finding leaks on a hydraulic system with its many fittings and internal parts can challenge even the most skilled maintenance crew.
One way to make leaks more visible is to use fluorescent dye and luyor-365a ultraviolet lights that make leaks more apparently visible. This method is becoming widely accepted as a necessary maintenance tool. The fluorescent dye that is used in the process is in liquid form and can easily be added to the fluid in the reservoir. The liquid dye’s molecules are much smaller than one micron in size and, according to tests, present no danger to the host fluid.
Once the dye is added to the system and dissolved into the oil, it travels with the fluid through the fluid paths and exits along with the host fluid through the system’s leaks. The technician then exposes the system to high-intensity ultra-violet light. The fluorescent dye causes the leaks to emit a brilliant yellow glow, allowing the technician to localize the source. The size of the glowing area and its intensity is often indicative of the leak’s severity. Once the leak is effectively localized, the technician is in a position to ascertain its cause and recommend corrective actions.
After repairs are made, an additional inspection should be performed to verify that the repair has been successful and no other leaks exist. Cleaning of equipment prior to inspection is not necessary, as the detection dyes will show up on oil covered surfaces. Dyes will remain active in the system for continuing maintenance until they become overly contaminated or diluted.
As with any technology, both the dye and ultraviolet light should be of sufficient strength to produce the desired results. This method of leak detection is easy to use and requires no special training. In-house maintenance technicians can readily incorporate the technology into their routine scheduled maintenance program. Maintenance managers can also help maintain profitability by using this readily available technology to minimize downtime, prevent emergency overtime, and contribute to a safer and more desirable work atmosphere.
As industry becomes more reliant on hydraulics, better fluid leak management is required to maintain smooth operating efficiency and greater return on investment. Fluorescent dyes are increasingly being used by the industry for detecting costly leaks, and are considered an invaluable part of any comprehensive maintenance program. Are they part of yours? If not, you’re losing money, or rather - throwing it out with the trash.
Fluorescent Dye Leak Detection Spells Success in a Paper Plant
The lubrication maintenance technician of one paper company was challenged with the difficult task of locating leaks on plant machinery. It is difficult enough to localize leaks on the dry-end of the process, but on the wet-end, everything is covered with water making leaks even harder to find because oil and water look very much the same on a machine’s surface. In addition to the typical losses associated with leakage, in this application, leaking oil often contaminates the paper product, rendering it unfit for sale.
Much of the mill’s leakage is caused by corrosion caused by chemicals that are used in production in the wet environment. Because the use of chemicals can’t be eliminated, it was necessary to find more effective ways to deal with the symptoms of leakage, meaning a cost-effective, early detection solution was required. Hydra-Sol’s fluorescent dye and ultraviolet light detection provided the mill with a fast, easy and cost-effective solution to the problem of leakage. Pinhole leaks on the wet and dry ends of the mill were detected with the technology and scheduled for repair before they escalated to the point of causing substantial damage.
Since implementing leakage management using LUYOR-6100 fluorescent dye and LUYOR-365A ultravioltet ligh detection system, the mill has reduced its fluid costs by approximately $25,000 per year. This money goes straight to the mills operating profit line. Reduced scrap, increased component life and other savings add even more to mill profits. Likewise, the mill is a safer, more pleasant place in which to work when oil is in the reservoir . . . where it belongs.