Reliability and Maintenance

Maintenance and Reliability Preventive maintenance requires that all engines be shut down at periodic intervals for inspection and repair. For properly maintained heavy-duty engines availability is over 97 percent, with maintenance costs of 2.50 to 5 per horse-power-year and lubricating-oil consumption of 1 to 2 gal/hp-year. While this represents a high degree of reliability, outages of heavy-duty engines are more frequent than those of electric motors or steam turbines. 

Based on the results of the analysis the first research question could be answered affirmative. Precursors (defined as re-occurring deviations in an operational process) do exist and can often be obtained from everyday quality, maintenance and reliability data. 

The selection of the technology of compact heat exchangers depends on the operating conditions, such as pressure, flow rates, and temperature, as well as on other parameters, such as fouling, corrosion, compactness, weight, maintenance, and reliability. Table 1 summarizes the major limits for the different types of compact heat exchangers. 

Well-implemented lubricant analysis can help optimize the use of maintenance and reliability resources to achieve improved machine reliability and reduced operating and maintenance costs. In certain hazardous... 

System maintenance and reliability are very important, so be sure to consider this in every step of your design. Engineering a practical and safe fuel cell power supply takes a bit of thought. It is best to start out small and build up slowly, so that your mistakes do not turn out to be costly or dangerous mistakes. 

The key operational parameters of exciplex and excimer lasers used in optical lithographic applications include exposure-dose-related parameters comprising average power, pulse energy, repetition rate, and pulse width temporal coherence spatial coherence including beam dimensions, beam divergence, and beam uniformity and maintenance and reliability. Table 13.2 lists some of the key operational parameters of KrF, ArF, and F2 laser systems used in optical lithography. 

Maintenance and Reliability - The selection of high pressure parts In rotating and/or reciprocating service must consider friction, lubrication, speed and similar factors to minimize wear, leakage and premature failure. Routine maintenance that can be performed In place with a minimum of off-line time Is advantageous If It becomes necessary to disconnect the unit from the piping or motor or move It to the maintenance shop for repair, spare units may be required. 

Pharmaceutical plants need to address maintenance and reliability issues better in order to produce life critical products, on time, on cost, and on quality, safely with respect for personnel, property, and the environment. Also, there are issues of evidence of service and other FDA, OSHA, and EPA compliance factors that impact the maintenance function in pharmaceutical plants. These issues are discussed in other chapters within this book. 

Our experience in pharmaceuticals shows that plants pursuing manufacturing excellence develop a strategic plan for maintenance and reliability and are focused on reliability-balanced scorecards, maintenance basics, condition... 

Successful pharmaceutical plants develop a multiyear, strategic plan for maintenance and reliability. The key issues are developed with a cross-section of plant personnel. A proper strategic plan will involve the following issues ... 

D. Philosophy What will our maintenance and reliability culture be ... 

Through implementation of the RBS, pharmaceutical companies have the opportunity to bring a modern approach of measuring change to their companies. Using the RBS to measure the improvements in maintenance and reliability will provide an integrated view of reliability impact on such areas as financial, customer support, business process, and innovation and learning. 

The best pharmaceutical plants focus on excellence in maintenance and reliability as a means of achieving manufacturing excellence. This also results in compliance with environmental and safety regulations and preserves a plant s capital investment. Techniques that minimize risks and surprises are ... 

Excellence in the maintenance and reliability arenas is best achieved by pursuing a logical, methodical approach, such as we have outlined in this chapter. The pharmaceutical industry must move away from views such as maintenance is a necessary evil, or maintenance is an art, to a reasoned empirical approach. The industry cannot afford to squander its heavy investment in research and development by neglecting the maintenance and reliability function. 

On-line determination of molar mass (MM) and molar mass distribution (MMD) has become possible with the introduction of an on-line gel permeation chromatograph. Such an instrument does automatic sampling, dilution, injection, elution, detection and analysis, much like an on-line gas chromatograph. Deconvolution is automatic, as is calibration from a mixture of standards. As with all on-line chromatographic techniques, maintenance and reliability are a problem f - large-scale production use. 

The Facility Engineering Support function is responsible for evaluating design, maintenance, and reliability problems at the HCF involving the ventilation system, manipulators, shield windows, remotely operated jigs and fixtures, and information display consoles. In the longer term, these responsibilities may also include facility structural modiflcations and robotically controlled chemical process routines for isotope processing. 

Svantesson T. 2008. EFNMS-SMRP Maintenance and Reliability Indicator Harmonisation Project. Euromaintenance, 8-10 April Brassels. 

Nechval NA, Nechval KN, Purgailis M (2011) Statistical inferences for future outcomes with applications to maintenance and reliability. In Lecture notes in engineering and computer science Proceedings of the world congress on engineering 2011, WCE 2011, London, 6-8 July 2011, pp 865-871... 

Kulkarni, C., Biswas, G., Koutsoukos, X., Goebel, K., Celaya, J. (2010). Physics of failure models for capacitor degradation in DC-DC converters. In The Maintenance and Reliability Conference, MARCON. Knoxville, TN. 

Factors such as stability, detection speed, recovery time, frequency and methods of calibration, required maintenance, and reliability can also influence the selection of a specific gasdetection technology. 

Kowalski, M., Magott, J., Nowakowski, T., Werbinska-Wojciechowska, S. (2011) Analysis of transportation system with the use of Petri nets. Eksploatacja i Nieza-wodnosc—Maintenance and Reliability 13(1) 48-62. 

Valis, D., Zak, L. Pokora, O. (2014) On approaches for non-direct determination of system deterioration. Eksploatacja i Niezawodnosc—Maintenance and Reliability 14(1) 33-41. 

Werbinska-Wojciechowska, S. (2013) Time resource problem in logistics systems dependabflity modelling. Eksploatacja i Niezawodnosc—Maintenance and Reliability 15(4) 427-433. 

Rosinski A., Dabrowski T., 2013. Modelling reliability of uninterruptible power supply units. Eksploatacja i Niezawodnosc—Maintenance and Reliability Vol. 15, No. 4, 2013 409 13. 

Li Du L., Wang Z., Huang H. 2010 Cost-t e function analysis in dynamic design under uncertainty, Maintenance and Reliability no. 212010. 

Valis D, Pietrucha-Urbanik K. 2014. Utilization of diffusion processes and fuzzy logic for vulnerability assessment. Eksploatacja i Niezawodnosc— Maintenance and Reliability, Vol. 16, no. 1 48-55. 

Tomaszek, H. Jasztal, M. Zieja, M. 2011. A simplified method to assess fatigue life of selected structural components of an aircraft for a variable load spectrum. Maintenance and Reliability 4 29-34. 

Wazny, M. 2008. The method of determining the time concerning the operation of a chosen navigation and aiming device in the operation system. Maintenance and Reliability 2. 

Wazny, M. (2009). The method for assessing residual durability of selected of devices in avionics system. Maintenance and Reliability 3. 

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