MANAGEMENT

Advanced Maintenance Practices



Advanced Maintenance Practices

Question 1

Condition Monitoring

Modern high-rise (and, in particular, high-rise) buildings - a complex engineering objects, which require constant condition monitoring of various technological systems and components.  In addition, Western standards (often used in conjunction with the domestic on the principle of "where more stringent" in buildings of foreign companies) require monitoring of ground.

There are various different measurement techniques used for condition monitoring; few of them are discussed below.

Vibration Analysis

Historically, most programs include condition monitoring and vibration analysis generally gets at least modest success. The recommendation made to the maintenance department for this technique can be effective, using the services of experts certified vibration analysis, with at least three years of field experience, formal training and skills in the interpretation of the vibration data. It should be also incorporated software that helps to make the interpretation and management of information points to monitor.

Many managers think they apply only vibration analysis is sufficient to achieve their reliability goals and this is a position that is deeply rooted among professionals in this technology. The problems that typically can be detected and corrected with an efficient vibration analysis program include:

Misalignment

Imbalance

Resonance

Mechanical looseness

Damaged bearings

Problems in pumps

Abnormalities in gear

Electrical problems associated with engines

Problems bands

Etc.

The vibration analysis approach is early detection of problems that allow for greater availability and by analyzing the trend of the condition, be in a position to detect problems and conditions that could jeopardize the reliability of the plant. With this approach, repairs can be scheduled to ensure reliability, with good coordination of inventory and staffing.

Oil Analysis

Oil Analysis is one of the simple techniques that more information gives the Maintenance Manager, with respect to operating conditions of equipment, levels of pollution, degradation and eventual wear and durability. Many maintenance departments currently have Oil Analysis Program. Some of his laboratory using the lubricant supplier or by hiring private laboratory. In many cases test results are received weeks or months after the sampling and information becomes irrelevant, since that time, and equipment conditions are different, in many cases the oil has already been changed and other equipment already failed and was repaired. The reason for this is simple, the focus of these programs is fully predictive and often the program aims only to determine if you need an oil change or if the wear of the machine indicates a fault condition. Predictive Maintenance is focused on monitoring the symptoms of failure.

As in the vibration analysis, appropriate point location to sample analysis is critical in the oil. Traditionally the oil samples are taken from tanks or drain ports, making the resulting information is not representative of the equipment operating conditions. Additionally the analysis of oils can be installed side sampling ports that allow the location of the problem effective. It requires that the sampling process is "Consistent" so that the resulting information may be converted into data and recognize trends and analyze their behavior over time.

Some of the failures that oil analysis can help detect:

Abrasive particles in the oil

Water contaminated with oil

Fuels

Chemicals

Operation at high temperature

Misalignment

Imbalance

Cavitations

Fatigue

Overload

Additive depletion

Oil misapplied

Home of bearing failure

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