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Handbook of Reliability, Availability, Maintainability and Safety in Engineering Design - Part 53

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Handbook of Reliability, Availability, Maintainability and Safety in Engineering Design - Part 53 studies the combination of various methods of designing for reliability, availability, maintainability and safety, as well as the latest techniques in probability and possibility modelling, mathematical algorithmic modelling, evolutionary algorithmic modelling, symbolic logic modelling, artificial intelligence modelling, and object-oriented computer modelling, in a logically structured approach to determining the integrity of engineering design. . | 4.4 Application Modelling of Availability and Maintainability in Engineering Design 503 Table 4.14 Preliminary design data for simulation model sector 1 Assembly Code Flow vol. Mass flow Liq. Solids Transfer conveyor 1 C015141 575 1 508 106 1 403 Transfer conveyor 2 C015241 575 1 508 106 1 403 Rev. shuttle conveyor 1 C024111M 575 1 508 106 1 403 Rev.shuttle conveyor 2 C024211M 575 1 508 106 1 403 Storage bin 1 U024111 192 503 35 468 Storage bin 2 U024211 192 503 35 468 Storage bin 3 U024311 192 503 35 468 Belt feeder 1 Y024121 192 503 35 468 Belt feeder 2 Y024221 192 503 35 468 Belt feeder 3 Y024321 192 503 35 468 Mill feed conveyor 1 C024121 192 503 35 468 Mill feed conveyor 2 C024221 192 503 35 468 Mill feed conveyor 3 C024321 192 503 35 468 a Evaluation of Simulation Model Sector 1 A major characteristic of the process flow diagram PFD of sector 1 is that it depicts material flow and indicates how inputs are generated and then transformed by each system or assembly into outputs that in turn become the inputs to the next system or assembly as depicted in the preliminary design data given in Table 4.14. These are specifically mass-flow volumes of solids. The PFD is systematically examined to analyse deviations in process flow and system performance and in this case to determine mass-flow balance through the integrated assemblies. Each assembly is graphically represented in the simulation model by a virtual prototype process equipment model PEM . Each of the assemblies of the PFD depicted in Fig. 4.51 i. e. the feeder three storage bins three chute conveyors and three transfer conveyors is a process equipment model. Each PEM contains selected model components that are linked together with logical flows. A model component is a modular design entity with a complete specification describing how it is connected to other model components in a model configuration. Model configurations are created when two or more model components are connected to each other via their .