National economic development relies on long-term stable supply of electricity, and the stability of electricity supply absolutely relates to the quality of maintenance of power generation units. In the past, the electricity supply of Taiwan was exclusively dominated by the state-run Taiwan Power Company (Taipower). Following government de-regulation policy, the private IPP (Independent Power Plants) also have joined the grid of Taiwan's electricity supply that diversified electricity power supply. This study collects power generation equipment maintenance cost information bases on practical detail cost information and labor cost paid by employer that listed in law or regulation. The information of estimating contrast cost which cannot be easily quantified is collected by questionnaire of power plant and contractor personnel who response for estimating cost of power generation equipment maintenance in order to gather practical cost estimating rules. After summarizing and analyzing collected maintenance cost data, easily calculating cost estimating model for power generation equipment had been proposed. The model can be set as criteria for cost estimating and examine the maintenance contract price of contractor in view of contractor cost. Power generation industries had faced severe cost pressures due to the high rising fuel costs, but not readily reflect the cost of power generation to the electricity charges. In the condition of high price of fuel, the only way to save operational cost was to reduce expense of equipment maintenance and other operation costs. So, the power plants aim at lowing equipment maintenance costs to meet limited budget. Most power plants plan their equipment maintenance budget according to quotation of original equipment manufacturer or professional contractor. There are lacks of related cost information to examine whether the quotation is reasonable or not. The study showed that the scale of contractor companies, indirect cost apportionment can affect indirect costs of contract cost, thereby affecting the contract price. The estimated profit will vary with many factors case by case such as market competition level, technical difficulty, working season, and duration etc.

Thesis--M. Phil., University of Hong Kong, 1979. / Xeorx copy of typescript.

Thesis (MTech (Business Administration))--Peninsula Technikon, 2001 / Maintenance of locomotives is the main function of Bellville Locomotive Traction Depot in the Western Cape. Therefore, it is important to have a sound maintenance plan in place, to prevent a negative impact on the availability and reliability of locomotive supply for hauling power to train services. The purpose of the research is to determine the causes of the increased frequency of maintenance through a case study relating to 35-class locomotives. The abnormal increased frequency of wheel change and inter-bogie control repairs on 35-class diesel locomotives is investigated. A research survey was adopted, which included questionnaires and personal interviews based on the literature search. The target group is L&N section, which includes below-deck maintenance, overhaul and change out, repairs to locomotive bogies, frames, wheels, snubbers, inter-bogie control and traction motors. Sixteen people are responsible for all below-deck repairs and service of 52 locomotives. The results of the research will expose the shortcomings of the maintenance plan and propose solutions. This will be achieved by testing the effectiveness of the existing maintenance plan at Spoornet through the identification of the causes for the abnormal increase in wheel changes and inter-bogie control repairs on 35-class diesel locomotives. The outcome from this case study research will be to quantify the benefits arising from the effective application of a maintenance plan.

Mobile technology is becoming more and more pervasive within the consumer industry. Devices such as Smartphones and Tablets are able to relay information effectively and affordably either with or without an accompanying cellular connectivity plan. The effect of this technology is slowly making its way through the corporate world. Recognizing that this technology has the potential to affect workflow practices within a Department of Transportation, this thesis first presents two mobile applications to address specific areas of concern identified within the Utah Department of Transportation maintenance division. The first application creates a living directory that provides specific information regarding employees, equipment, and location within maintenance shed locations throughout the state of Utah. The second application provides a seamless method of information transfer as it relates to traffic signs from the field directly to central servers in an effort to reduce data loss and corruption.

A model which helps system designers to jointly evaluate a repairable equipment population system and its associated logistics support subsystem is developed. The modeled system consists of a deployed population of repairable equipment and a logistics support subsystem consisting of repair channels and an inventory of consumable components. In the system, a population of identical repairable equipment is procured and deployed to meet a known and constant demand. As the equipment fails, it is repaired and returned to service. Equipment repair generates secondary demands for consumable components and spares. Backorders within the inventory support subsystem add to the time failed equipment is not in service. The model returns optimal values for the number of equipment units to deploy, the number of maintenance channels, the retirement age of deployed units, the procurement level, and the procurement quantity. These values are optimal in that they minimize the expected equivalent annual life-cycle cost of the system. The best system design may then be selected from among candidate designs on the basis of minimum life-cycle cost. Previous attempts at integrated logistic system evaluation have led to suboptimal results because evaluation of the repairable equipment population system was disconnected from the evaluation of the inventory subsystem. Where inventory backorders are allowed, there are tradeoffs between system-level shortage costs and the cost of procuring and holding inventory.The backordered consumable components contribute to equipment repair times by increasing the time spent in repair. Furthermore, the procurement of additional repairable equipment to offset shortage penalties may result in increased logistics support costs which must be accounted for when evaluating system design alternatives. This thesis presents a model for a repairable equipment population system with its associated logistics support subsystem. The evaluation function is developed along with assumptions and definitions of the cost elements. A numerical example which illustrates some basic aspects of the model is given. Finally, an optimization routine is presented which returns an optimal set of system design variables for a given set of design and source dependent parameters in the face of design and source independent parameters. / Master of Science

A concept for the mathematical modeling of multiple repairable equipment and logistic systems (MREAL systems) is developed; These systems consist of multiple populations of repairable equipment, and their associated design, procurement, maintenance, and supply support. MREAL systems present management and design problems which parallel the·management and design of multiple, consumable item inventory systems. However, the MREAL system is more complex since it has a repair component. The MREAL system concept is described in a classification hierarchy which attempts to categorize the components of such systems. A specific mathematical model (MREAL1) is developed for a subset of these components. Included in MREAL1 are representations of the equipment reliability and maintainability design problem, the maintenance capacity problem, the retirement age problem, and the population size problem, for each of the multiple populations. MREAL1 models the steady state stochastic behavior of the equipment repair facilities using an approximation which is based upon the finite source, multiple server queuing system. System performance measures included in MREAL1 are: the expected MREAL total system life cycle cost (including a shortage cost penalty); the steady state expected number of shortages; the probability of catastrophic failure in each equipment population; and two budget based measures of effectiveness. Two optimization methods are described for a test problem developed for MREAL1. The first method computes values of the objective function and the constraints for a specified subset of the solution space. The best feasible solution found is recorded. This method can also examine all possible solutions, or can be used in a manual search. The second optimization method performs an exhaustive enumeration. of the combinatorial programming portion of MREAL1, which represents equipment design. For each enumerated design combination, an attempt is made to find the optimal solution to the remaining nonlinear discrete programming problem. A sequential unconstrained minimization technique is used which is based on an augmented Lagrangian penalty function adapted to the integer nature of MREAL1. The unconstrained minimization is performed by a combination of Rosenbrock's search technique, the steepest descent method, and Fibonacci line searches, adapted to the integer nature of the search. Since the model contains many discrete local minima, the sequential unconstrained minimization is repeated from different starting solutions, based upon a heuristic selection procedure. A gradient projection method provides the termination criteria for each unconstrained minimization. / Ph. D.

A thesis submitted in fulfillment of the requirements for the Degree of Doctor of Philosophy, School of Statistics and Actuarial Science, Faculty of Science University of Witwatersrand, Johannesburg. February 2017. / The work done in this thesis on finite planning horizon inspection models has demonstrated that with the advent of powerful computers these days it is possible to easily find an optimal inspection schedule when the lifetime distribution is known. For the case of system time to failure following a uniform distribution, a result for the maximum number of inspections for the finite planning models has been derived. If the time to failure follows an exponential distribution, it has been noted that periodically carrying out inspections may not result in maximization of expected profit. For the Weibull distributions family (of which the exponential distribution is a special case), evenly spreading the inspections over a given finite planning horizon may not lead to any serious prejudice in profit. The case of inspection models where inspections are of non-negligible duration has also been explored. The conditions necessary for inspections that are evenly spread over the entire planning horizon to be near-optimal when system time to failure either follows a uniform distribution or exponential distribution have been explored. Finite and infinite planning horizon models where inspections are imperfect have been researched on. Interesting observations on the impact of Type I and Type II errors in inspection have been made. These observations are listed on page 174. A clear and easy to implement road map on how to get an optimal inspection permutation in problems first discussed by Zuckerman (1989) and later reviewed by Qiu (1991) for both the undiscounted and discounted cases has been given. The only challenge envisaged when a system has a large number of components is that of computer memory requirements - which nowadays is fast being overcome. In particular, it has been clearly demonstrated that the impact of repair times and per unit of time repair costs on the optimal inspection permutation cannot be ignored. The ideas and procedures of determining optimal inspection permutations which have been developed in this thesis will no doubt lead to huge cost savings especially for systems where the cost of inspecting components is huge. / XL2018

This thesis is a resource document for computer information that is not presently available as a single unit. It describes most of the commonly available computer peripherals and some not-so-common ones from the micro, mini, and mainframe computer worlds. Physical descriptions, methods of operation, trouble shooting, maintenance, and some schematics and future trends are covered. A few older devices having historical significance are also discussed.By knowing where the computer industry is currently and seeing where it has been hardware-wise, it should be possible to project the direction in which the computer industry is headed. People in the computer profession and people that use computers need to be educated about peripheral devices so that they may make informed decisions on which equipment to acquire and in planning for the future. This thesis should be a valuable aid in this process. The information presented should save time and money during the decision-making process and lead to more effective choices of equipment. / Department of Computer Science

M.Ing. (Mechanical Engineering) / Considering the high cost of maintenance, effective maintenance management have the potential to contribute to the profit of a petrochemical business. The complexity of the maintenance domain in the petrochemical business demands the use of information systems for the management of maintenance. The availability of correct, easily interpretable information about maintenance can therefore contribute to the profit of a petrochemical business. Management decisions are based on available information. The quality (accuracy and timeliness) of the information create more room for creative decisions in the maintenance department. A computerized information management system is a tool employed in the optimization of maintenance cost and a requirement for world class maintenance. This system depends on information of a high quality. It should be kept in mind that this systems is an aid to maintenance management and would never be able to replace the maintenance manager. The role played by high quality information in the success of a computerized maintenance management system point towards the importance of the personnel that maintain the system and those that provide input to the system. These personnel need to be highlytrained and should have the most recent technology available. Continuing development of the computerized maintenance management system within a company is necessary for the system to succeed.

M.Phil. / In the modern world maintenance organisations are exposed to rapid changes in equipment complexity and the maintenance thereof. Maintenance people have to adopt completely new ways of thinking and managing. If organisations and their management do not adapt to these changes and challenges they are destined to oblivion. Moubray (1991:1) states that: "Managers everywhere are looking for a new approach in maintenance. They want to avoid the false starts and dead ends which always accompany major upheavals. Instead they seek a strategic framework which synthesizes the new developments into a coherent pattern, so that they can evaluate them sensibly and apply those likely to be of most value to them and their companies" One of the viable alternative business strategies and maintenance approaches in dealing with equipment complexity and hence the management thereof, is by means of maintenance outsourcing and contract setting. If done correctly it reduces the risk of organisations and increases flexibility. During outsourcing initiatives organisations will look for benefits such as improvement of its profit margins by means of inventory reductions, improved reliability, maintenance efficiency and expert skills maintaining their assets. Coetzee (1997:24) explain that the task of the maintenance function is "to support the production process with adequate levels of availability, reliability and operability at an acceptable cost". The same principles apply in adherence to the maintenance contracts where the Original Equipment Manufacturer (OEM) or contractor also needs to support the customer with the adequate levels of availability, reliability and operability at defined costs. This can only be achieved by quality maintenance; "the right level of maintenance performed at the right time to the right equipment by workmen able and willing to deliver quality workmanship and using correct task specifications" (Coetzee, 2000a). The method used in maintenance outsourcing negotiation and binding agreements between the organisation and the contractor is a Repair and Olivier-2008 Department of Mechanical and Manufacturing Engineering - UJ Maintenance Contract; commonly known as R+M or MARC contracts. Essentially a Repair and Maintenance contract is the outsourcing of a long term Service Level Agreement (SLA) or maintenance project, normally to the OEM, or its authorised service organisation. "A maintenance and repair contract is a contractual agreement between the OEM (original equipment manufacturer), or contractor, and the equipment owner or user, where the OEM or contractor carries out all maintenance and repair activities at a guaranteed rate per hour" (Lugtigheid, et al. 2007). When organisations adapt outsourcing as a business strategy, it creates a framework of uncertainty and risk to Original Equipment Manufactures and/or maintenance contractors who has to perform the maintenance services. The focus of manufacturing and selling is thus disrupted by the challenge of the unknown playgrounds of competitiveness