Asset management systems and methods
First Claim
1. A non-transitory computer readable storage medium that, when placed in operable relation to a processing device, provides software to effect a determination of an optimal asset management plan, the software comprising:
- an input module that accepts a list of assets to be managed and accepts design data and process data for each asset;
a failure module that determines probability of failure curve parameters for each of a plurality of degradation modes of each asset;
a simulation module that predicts asset failures based on the probability of failure curve parameters at a particular time exceeding predetermined failure probability thresholds, and determines failure costs for each asset failure that is predicted to have occurred based on the predetermined failure probability thresholds being exceeded, andwherein the simulation module further calculates risk-weighted costs for each degradation mode of each asset, wherein each risk-weighted cost corresponds to a cumulative probability of failure determined from the failure curve parameters, multiplied by a consequence cost, wherein said simulation module produces a total management cost that includes scheduled event costs and a combination of the failure costs and the risk-weighted costs; and
an optimization module that generates alternative management plans for evaluation by the simulation module and provides an optimal management plan for display to a user.
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Accused Products
Abstract
Systems, methods, and software for reliability, hazard, and integrity optimization are disclosed. In at least some embodiments, the software includes an input module, a failure model module, a simulation module, and an optimization module. The input module accepts a list of assets to be managed and determines design data and process data for each asset. The failure model module determines probability of failure curve parameters for each asset degradation mode. The simulation module simulates an asset management plan to determine a total management cost that includes costs for predicted failures as well as risk-weighted costs for each degradation mode of each asset generates alternative management plans for evaluation by the simulation module and provides a selected management plan for display to a user. In each embodiment, the total management costs may account not only for direct costs, but also for safety costs, environmental costs, and business costs.
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Citations
20 Claims
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1. A non-transitory computer readable storage medium that, when placed in operable relation to a processing device, provides software to effect a determination of an optimal asset management plan, the software comprising:
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an input module that accepts a list of assets to be managed and accepts design data and process data for each asset; a failure module that determines probability of failure curve parameters for each of a plurality of degradation modes of each asset; a simulation module that predicts asset failures based on the probability of failure curve parameters at a particular time exceeding predetermined failure probability thresholds, and determines failure costs for each asset failure that is predicted to have occurred based on the predetermined failure probability thresholds being exceeded, and wherein the simulation module further calculates risk-weighted costs for each degradation mode of each asset, wherein each risk-weighted cost corresponds to a cumulative probability of failure determined from the failure curve parameters, multiplied by a consequence cost, wherein said simulation module produces a total management cost that includes scheduled event costs and a combination of the failure costs and the risk-weighted costs; and an optimization module that generates alternative management plans for evaluation by the simulation module and provides an optimal management plan for display to a user. - View Dependent Claims (2, 3, 4, 5)
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6. A plant management method that comprises:
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identifying multiple assets in the plant; identifying multiple degradation modes; generating predictions regarding whether each asset will fail within a planned time frame based on probability of failure estimates at specific times within the planned time frame exceeding predetermined failure probability thresholds; estimating failure costs that would result from each generated asset failure prediction; determining risk-weighted costs over the planned time frame for each degradation mode of each asset, wherein each risk-weighted cost corresponds to cumulative probability of failure estimates over the planned time frame for each degradation mode of each asset, multiplied by a consequence cost; combining said risk-weighted costs and failure costs with scheduled event costs to obtain a total management cost; and displaying to a user an optimal management plan that specifies an inspection and maintenance schedule for each of said assets, wherein a processing device performs said generating, estimating, determining, combining, and displaying operations. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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15. A reliability, hazard, and integrity optimization system that comprises:
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a memory that stores optimization software; and one or more processors coupled to the memory to execute the software, wherein the software configures the one or more processors to; obtain a list of assets to be managed; obtain a set of degradation modes applicable to said assets; generate a prediction of whether each asset will fail within a planned time frame based on probability of failure estimates at specific times within the planned time frame exceeding predetermined failure probability thresholds; estimate failure costs that would result from each generated asset failure prediction; determine risk-weighted costs over the time frame for each degradation mode of each asset, wherein each risk-weighted cost corresponds to cumulative probability of failure estimates over the planned time frame for each degradation mode of each asset, multiplied by a consequence cost; combine said failure costs and risk-weighted costs with scheduled event costs to obtain a total management cost; and analyze whether various actions reduce the total management cost. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification