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Effects of equipment failure uncertainty in batch

Effects of equipment failure uncertainty in batch

Effects of equipment failure uncertainty in batch ...

Jun 11, 1995  Uncertainty analysis is incorporated at the production scheduling stage to improve the probability of performing the resulting schedule. This probability will depend on forecasts of equipment failure. The effects of equipment failure on the production schedule are minimised by means of reliability indexes for each plant unit.

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Effects of equipment failure uncertainty in batch ...

Abstract This paper deals with production scheduling of multipurpose batch plants in the presence of equipment failure uncertainty. Uncertainty analysis is incorporated at the production scheduling stage to improve the probability of performing the resulting schedule. This probability will depend on forecasts of equipment failure. The effects of equipment failure on the production schedule are ...

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Effects of equipment failure uncertainty in batch ...

Article “Effects of equipment failure uncertainty in batch production scheduling.” Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto stood alone to support the generation of ideas. By linking the information entered, we provide opportunities to make unexpected discoveries and ...

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Batch production and preventive maintenance scheduling ...

Batch production and preventive maintenance scheduling under equipment failure uncertainty. ... The effects of equipment failure on the production schedule are minimized by computing the reliability indexes for each plant unit and for each scheduled task. Avoiding the use of equipment with low reliability indexes is balanced against production ...

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Batch production and preventive maintenance scheduling ...

Jul 24, 1997  The effects of equipment failure on the production schedule are minimized by computing the reliability indexes for each plant unit and for each scheduled task. Avoiding the use of equipment with low reliability indexes is balanced against production requirements (demand). ... batch process; uncertainty; equipment failure; reliability ...

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Managing Process Risk through Application of FMEA to Batch ...

Risk and uncertainty exist across the entire value chain as a result ... Failure Effects The consequences if the failure occurs Risk Priority RPN = ... 2 equipment failure 2 PM Program 2 8 (mixer problem) 7.2.3 Mix permeate Mix time out of specification noncompliance with

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Effects of equipment failure uncertainty in batch ...

Article “Effects of equipment failure uncertainty in batch production scheduling.” Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto stood alone to support the generation of ideas. By linking the information entered, we provide opportunities to make unexpected discoveries and ...

get price

Managing Process Risk through Application of FMEA to Batch ...

Risk and uncertainty exist across the entire value chain as a result ... Failure Effects The consequences if the failure occurs Risk Priority RPN = ... 2 equipment failure 2 PM Program 2 8 (mixer problem) 7.2.3 Mix permeate Mix time out of specification noncompliance with

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DeepDyve - Unlimited Access to Peer-Reviewed Journals

DeepDyve is the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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Eduard Sanmarti - Academia

Batch production and preventive maintenance scheduling under equipment failure uncertainty more. by Eduard Sanmarti. ... A combined scheduling/reactive scheduling strategy to minimize the effect of process operations uncertainty in batch plants more. by Eduard Sanmarti. ... Effects of equipment failure uncertainty in batch production ...

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Preventive Maintenance Research Papers - Academia

Effects of equipment failure uncertainty in batch production scheduling. Save to Library. by Eduard Sanmarti • 14 . Mechanical Engineering, Chemical Engineering, Scheduling, Planning; Batch production and preventive maintenance scheduling under equipment failure uncertainty.

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A multilevel model to address batch effects in copy number ...

Jul 12, 2010  However, genomewide array analyses are particularly susceptible to batch effects as the logistics of preparing DNA and processing thousands of arrays often involves multiple laboratories and technicians, or changes over calendar time to the reagents and laboratory equipment. Failure to adjust for batch effects can lead to incorrect inference ...

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Integrated Remanufacturing and Opportunistic Maintenance ...

Mar 26, 2021  Numerical examples based on the collected information from a leased batch production line of engine crankshaft demonstrate that this proposed ROM policy could efficiently achieve saved leasing profit maximization, reduce joint decision complexity, and expand OM theory. ... Effects of Equipment Failure Uncertainty in Batch Production Scheduling,”

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How Equipment Calibration Contributes to Quality Management

Sep 15, 2020  The role of equipment, devices, and instruments to produce a quality product is undeniably crucial for every manufacturing company. It becomes even more important to assure the quality of measurements of such devices through regular calibration both before and after the use of the equipment.

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Development of a batch manager for dynamic scheduling and ...

A batch manager is developed for the dynamic scheduling and on-line management of process operations. The developed system consists of a process monitoring module and a dynamic scheduling module. When a deviation from the initial schedule is detected in a process monitoring module, dynamic scheduling is performed in the dynamic scheduling module and the initial schedule is adjusted to the ...

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Case Study: Permasense Corrosion and Erosion Monitoring

confidence. This minimizes the potential for a disastrous failure, and also the cost of an unnecessary shutdown prompted by uncertainty. Once sufficient data and trend information had been collected, facility engineers were able to analyze the effects of specific operating conditions in addition to the characteristics of the crude oil.

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A method for detection and diagnosis on batch fermentations

Thus the simultaneous use of both methods allows detecting and possibly isolating a wide range of faults. Observations such as the effect of nonlinearities on the detection tests and robustness to model uncertainty are discussed. Numerical results on a particular case, the xanthan gum batch

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A multilevel model to address batch effects in copy number ...

Failure to adjust for batch effects can lead to incorrect inference and requires inefficient post hoc quality control procedures to exclude regions that are associated with batch. Our work extends previous model-based approaches for copy number estimation by explicitly modeling batch and using shrinkage to improve locus-specific estimates of ...

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SIMPLE GUIDE TO QUALITY ASSURANCE

The laboratory should include one (1) sample blank every twenty (20) samples or batch if smaller. The acceptance criteria for the sample blank should be twice the practical quantitation limit (PQL), if the sample blank fails to meet the acceptance criteria, a blank and 10% of the sample batch and new QC samples should be analysed. Spike Recovery

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Power-System Reliability Calculations by Roy Billington ...

5. Record the effect of the failure event by the terminals affected; that is, for each affected terminal, store the failure mode, the event prob­ ability, and the event duration. Refer to Table 2.9 for a summary of formulas for computing event probability, duration, and frequency. 2.4.1.5 Accumulation of Failure Effects and Summary Prepare a ...

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Effects of equipment failure uncertainty in batch ...

Article “Effects of equipment failure uncertainty in batch production scheduling.” Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto stood alone to support the generation of ideas. By linking the information entered, we provide opportunities to make unexpected discoveries and ...

get price

A method for detection and diagnosis on batch fermentations

Thus the simultaneous use of both methods allows detecting and possibly isolating a wide range of faults. Observations such as the effect of nonlinearities on the detection tests and robustness to model uncertainty are discussed. Numerical results on a particular case, the xanthan gum batch

get price

A new robust optimization approach for scheduling under ...

maintenance tasks in multipurpose batch plants in the face of equipment failure uncertainty. They computed a relia-bility index for each unit and for each scheduled task and formulated a nonconvex MINLP model to maximize the overall schedule reliability. Because of the significant dif-ficulty in the rigorous solution of the resulting problem, a

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Test Planning and Failure Modes and Effects Analysis (FMEA)

Failure Mode: The way in which a failure is observed, describes the way the failure occurs, and its impact on equipment operation. Indenture Levels: The levels which identify or describe the relative complexity of an assembly or function. Local Effect: The consequence a failure mode has on the

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The effect of three-dimensional shape optimization on the ...

Probabilistic analyses allow the effect of uncertainty in system parameters on predicted model performance measures to be determined. Furthermore, using performance functions to describe a failure event, the probability of failure can be quantified. The effect of three-dimensional prosthesis shape o

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Continuous Manufacturing: Batch to the Future

In batch manufacturing the size of the equipment determines the batch size. Continuous manufacturing has flexible options for batch size. Batch size can be determined by time stamp, the amount produced, or raw material input. In the event of process failure, it is possible to isolate a smaller account of defective material.

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Five Factors That Can Affect Your Weighing System’s Accuracy

In a 2- to 3-minute batch or filling cycle, creep isn’t a significant problem. But if you use load cells to monitor inventory in a storage silo, you need to consider creep effects. Temperature changes can cause weighing errors. Most load cells are temperature-compensated to reduce these errors.

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FMEA for Biologics Managing Process Risk Line by Line ...

Aug 11, 2009  The critical failure modes were defined as those failure modes associated with the batch record steps that were determined to have high RPN’s. Determining the high RPN’s was done by plotting each unique RPN (developed for all the line items for a specific batch record) on an X-axis and the RPN “values” on the Y-axis.

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Safety Systems: Modifying SIL-Certified Equipment Failure ...

Nov 08, 2012  I suggest that the contribution from systematic influences may be characterised as fixed for a given equipment type, installation and environment, and essentially independent of the inherent random hardware failure rate of the equipment. Failure mode effects analysis (FMEA) is often deployed as an evaluation tool as part of a certification ...

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SIMPLE GUIDE TO QUALITY ASSURANCE

The laboratory should include one (1) sample blank every twenty (20) samples or batch if smaller. The acceptance criteria for the sample blank should be twice the practical quantitation limit (PQL), if the sample blank fails to meet the acceptance criteria, a blank and 10% of the sample batch and new QC samples should be analysed. Spike Recovery

get price

A multilevel model to address batch effects in copy number ...

Jul 12, 2010  However, genomewide array analyses are particularly susceptible to batch effects as the logistics of preparing DNA and processing thousands of arrays often involves multiple laboratories and technicians, or changes over calendar time to the reagents and laboratory equipment. Failure to adjust for batch effects can lead to incorrect inference ...

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Characteristics of an OSLD in the diagnostic energy range

OSLDs exhibited good batch homogeneity ( 0.1). However, high uncertainty (42%) in the dose estimate was found as a result of relative

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Effect of aeration rate on the emission of N2O in anoxic ...

Effect of aeration rate on the emission of N2O in anoxic-aerobic sequencing batch reactors (A/O SBRs). Hu Z(1), Zhang J, Li S, Xie H, Wang J, Zhang T, Li Y, Zhang H. Author information: (1)School of Environmental Science and Engineering, Shandong University, 27

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Case Study: Permasense Corrosion and Erosion Monitoring

confidence. This minimizes the potential for a disastrous failure, and also the cost of an unnecessary shutdown prompted by uncertainty. Once sufficient data and trend information had been collected, facility engineers were able to analyze the effects of specific operating conditions in addition to the characteristics of the crude oil.

get price