Angular Soft Foot is a condition that occurs when a gap under a motor's foot is "non-parallel" to the mounting base. Because of this gap, the foot, when tightened, is forced to seat itself to whatever angle allows it to make total surface contact. As a result of this seating, stresses are created in the motor's foot that transfer through the motor "leg" and into the housing.
Good sheave alignment will increase efficiency by reducing premature wear or failure of belts, pulleys and bearings. This can be accomplished by several different alignment methods, such as the labor-intensive string and straightedge method (most common), or by laser. The latter, in the form of the DotLine LaserTM Pulley Alignment Tool, is new to the sheave alignment field, but has proven itself in greatly reducing downtime and the manpower needed to do the alignment, while simultaneously achieving far greater accuracy. This results in great labor savings and increased production uptime.
Machine train alignment doesn't have to be a complicated, mind boggling task. There is a basic step by step procedure to follow which will allow you to maximize all of the benefits of aligning a machine train. When you follow this procedure and adhere to its principles, you will find that machine train alignment can often be easier to accomplish than a one coupling "vanilla" alignment.
There is more than meets the eye when performing a turbine diaphragm alignment. It is not as simple as lining up all of the diaphragm bottom halves against a common reference line. To perform a correct diaphragm alignment it takes a lot of information, calculations, and time. If you plan properly, use the correct techniques, and technology; you will save time on the diaphragm alignment process and have a virtually rub free start-up. This can shave days to weeks off of your shut down and cause your turbine to operate more efficiently, thus saving lost production and increasing turbine output.
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In 2008, there arose a broad selection of solution providers specializing in helping the community of maintenance and reliability professionals to 'Go Green'. It is unlikely that the original mandate of most of these companies was to "help save the environment", but it does show how nimble entrepreneurialism adjusts to accommodate the demands of corporate social responsibility.
Wind turbines are dotted across the countryside, seaside, and even offshore. Many believe they are the answer to global warming and stopping the reduction of fossil fuel reserves. Whether you enjoy seeing them on the horizon, majestically spinning in the breeze, or believe they disturb the previously unspoiled landscape, for all of us in the reliability and condition monitoring fields, they pose a new challenge - we have to keep them turning!
Today's airborne ultrasound is a far more versatile technology than most people think. We can use ultrasound, together with vibration analysis and infrared thermography, to deepen our understanding of our machinery's condition. This article, which touches upon the use of airborne ultrasound and vibration, is the second of a three part series, in which we look at ultrasound, ultrasound/vibration and ultrasound/infrared.
A Study of a Positive, and Growing, Return on Investment by Martin Robinson
A paper mill in South Carolina had a very successful infrared inspection program that management wanted to expand. However, the requirements of NFPA 70E were causing them to re-think their strategy since inspections of energized equipment was becoming more restrictive, more time consuming and more costly. Furthermore, 8% of the mill's applications had never been surveyed due to either switched interlocks (which automatically deenergize the equipment upon opening, thereby preventing access to energized components), or to incident energy calculations in excess of 100 cal/cm2 on certain equipment (which exceeds personal protective equipment [PPE] ratings, and would place personnel in extreme danger and open the company to OSHA fines).
Como controlar vibración sin instrumentos, paraecerá raro, ingenioso pero no , simplemente necesidad de evaluar estado el nivel vibratorio global sin tener con que cuantificarlo, utilize una
A menudo, la vibración causada por otra maquinaria puede migrar por los cimientos, las bases, e incluso por la tubería, y afecta adversamente su alineación. Esto es a menudo evidente como
IR windows are gaining acceptance as an alternative to opening high voltage electrical cabinets. There are two basic types of windows. Clear windows and grills (with or without integrated
When collecting vibration data with a portable collector, the transducer must be securely mounted to the collection point. I generally use a flat rare earth magnet, but there are some points that
Predictive maintenance is a systematic method of monitoring and trending rotating equipment on a regularly scheduled basis to determine the condition of machines subject to wear and tear. On-line
One quick way to help your infrared program gain acceptance is to educate others in your organization (especially those who are important decision-makers) about the success of your efforts. Doing
The use of proper minimum frequency and maximum frequency (hereinafter referred to as f-min and f-max) is crucial in order to have an adequate frequency range for seeing and identifying