Maintenance support method, storage medium, and maintenance support apparatus
First Claim
1. A maintenance support method of causing a database creation unit and a diagnosis engine to support maintenance of a device on the basis of equipment maintenance information to manage an operation record containing a working record, a failure record, and a renewal record of the device, comprising:
- causing the database creation unit to create a risk assessment database in which “
device part unit price”
, “
maintenance personnel data”
, “
labor cost unit price data”
, and “
equipment stop loss for failure mode”
, which are related to the working record contained in the equipment maintenance information, and “
failure mode” and
“
failure occurrence frequency”
, which are related to the failure record, are associated with identification information of the device;
causing the database creation unit to create an anti-risk measure database in which “
failure mode”
related to the failure record contained in the equipment maintenance information and “
measure method for failure mode”
related to the renewal record are associated with the identification information of the device and identification information of each part of the device;
causing the database creation unit to execute at least one of event tree analysis and failure tree analysis for each part of the device on the basis of the identification information of each part of the device and the failure mode contained in the equipment maintenance information and acquire an analysis result;
causing the database creation unit to create a failure diagnosis database in which “
failure occurrence frequency”
, “
failure sign phenomenon”
, and “
failure cause”
contained in the equipment maintenance information are associated with the identification information of the device and the identification information of each part of the device for the analysis result and each failure mode in the analysis result;
causing the diagnosis engine to refer to the risk assessment database and the anti-risk measure database before a failure occurs in the device and calculate along a time sequence a risk estimate amount in case of failure for each device on the basis of the failure occurrence frequency and the equipment stop loss;
causing the diagnosis engine to refer to the risk assessment database and the anti-risk measure database before a failure occurs in the device and calculate along the time sequence a maintenance cost in executing a measure method for each device in advance on the basis of the failure occurrence frequency, the measure method, the device part unit price, the personnel data, and the labor cost unit price data;
causing the diagnosis engine to output, as a maintenance period, a time point at which a sum obtained by adding the risk estimate amount and the maintenance cost along the time sequence is minimized; and
causing the diagnosis engine to refer to the failure diagnosis database on the basis of the identification information of the device and the failure mode when a failure has occurred in the device and output at least one of a failure cause and a failure sign obtained as a result of reference.
1 Assignment
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Accused Products
Abstract
In an embodiment of this invention, a diagnosis engine refers to a risk assessment DB and anti-risk measure DB, calculates along the time sequence a risk estimate amount in case of failure for each device and a maintenance cost in executing a measure method in advance, and adds the risk estimate amount and maintenance cost along the time sequence to calculate an optimum maintenance period of the device. When a failure has occurred in the device, the diagnosis engine refers to a failure diagnosis DB on the basis of the identification information of the device and the failure mode and analyzes, on the basis of an operation record, a failure which is different from a secular change.
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Citations
12 Claims
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1. A maintenance support method of causing a database creation unit and a diagnosis engine to support maintenance of a device on the basis of equipment maintenance information to manage an operation record containing a working record, a failure record, and a renewal record of the device, comprising:
-
causing the database creation unit to create a risk assessment database in which “
device part unit price”
, “
maintenance personnel data”
, “
labor cost unit price data”
, and “
equipment stop loss for failure mode”
, which are related to the working record contained in the equipment maintenance information, and “
failure mode” and
“
failure occurrence frequency”
, which are related to the failure record, are associated with identification information of the device;
causing the database creation unit to create an anti-risk measure database in which “
failure mode”
related to the failure record contained in the equipment maintenance information and “
measure method for failure mode”
related to the renewal record are associated with the identification information of the device and identification information of each part of the device;
causing the database creation unit to execute at least one of event tree analysis and failure tree analysis for each part of the device on the basis of the identification information of each part of the device and the failure mode contained in the equipment maintenance information and acquire an analysis result;
causing the database creation unit to create a failure diagnosis database in which “
failure occurrence frequency”
, “
failure sign phenomenon”
, and “
failure cause”
contained in the equipment maintenance information are associated with the identification information of the device and the identification information of each part of the device for the analysis result and each failure mode in the analysis result;
causing the diagnosis engine to refer to the risk assessment database and the anti-risk measure database before a failure occurs in the device and calculate along a time sequence a risk estimate amount in case of failure for each device on the basis of the failure occurrence frequency and the equipment stop loss;
causing the diagnosis engine to refer to the risk assessment database and the anti-risk measure database before a failure occurs in the device and calculate along the time sequence a maintenance cost in executing a measure method for each device in advance on the basis of the failure occurrence frequency, the measure method, the device part unit price, the personnel data, and the labor cost unit price data;
causing the diagnosis engine to output, as a maintenance period, a time point at which a sum obtained by adding the risk estimate amount and the maintenance cost along the time sequence is minimized; and
causing the diagnosis engine to refer to the failure diagnosis database on the basis of the identification information of the device and the failure mode when a failure has occurred in the device and output at least one of a failure cause and a failure sign obtained as a result of reference.
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2. A computer-readable storage medium which stores a program to be used by a database creation unit and a diagnosis engine to support maintenance of a device on the basis of equipment maintenance information to manage an operation record containing a working record, a failure record, and a renewal record of the device,
the program causing a computer of the database creation unit to execute: -
a function of creating a risk assessment database in which “
device part unit price”
, “
maintenance personnel data”
, “
labor cost unit price data”
, and “
equipment stop loss for failure mode”
, which are related to the working record contained in the equipment maintenance information, and “
failure mode” and
“
failure occurrence frequency”
, which are related to the failure record, are associated with identification information of the device;
a function of creating an anti-risk measure database in which “
failure mode”
related to the failure record contained in the equipment maintenance information and “
measure method for failure mode”
related to the renewal record are associated with the identification information of the device and identification information of each part of the device;
a function of executing at least one of event tree analysis and failure tree analysis for each part of the device on the basis of the identification information of each part of the device and the failure mode contained in the equipment maintenance information and obtaining an analysis result; and
a function of creating a failure diagnosis database in which “
failure occurrence frequency”
, “
failure sign phenomenon”
, and “
failure cause”
contained in the equipment maintenance information are associated with the identification information of the device and the identification information of each part of the device for the analysis result and each failure mode in the analysis result, andcausing a computer of the diagnosis engine to implement;
a function of referring to the risk assessment database and the anti-risk measure database before a failure occurs in the device and calculating along a time sequence a risk estimate amount in case of failure for each device on the basis of the failure occurrence frequency and the equipment stop loss;
a function of referring to the risk assessment database and the anti-risk measure database before a failure occurs in the device and calculating along the time sequence a maintenance cost in executing a measure method for each device in advance on the basis of the failure occurrence frequency, the measure method, the device part unit price, the personnel data, and the labor cost unit price data;
a function of outputting, as a maintenance period, a time point at which a sum obtained by adding the risk estimate amount and the maintenance cost along the time sequence is minimized; and
a function of referring to the failure diagnosis database on the basis of the identification information of the device and the failure mode when a failure has occurred in the device and outputting at least one of a failure cause and a failure sign obtained as a result of reference. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A maintenance support apparatus comprising a database creation unit and a diagnosis engine to support maintenance of a device on the basis of equipment maintenance information to manage an operation record containing a working record, a failure record, and a renewal record of the device, the database creation unit comprising:
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a section which creates a risk assessment database in which “
device part unit price”
, “
maintenance personnel data”
, “
labor cost unit price data”
, and “
equipment stop loss for failure mode”
, which are related to the working record contained in the equipment maintenance information, and “
failure mode” and
“
failure occurrence frequency”
, which are related to the failure record, are associated with identification information of the device;
a section which creates an anti-risk measure database in which “
failure mode”
related to the failure record contained in the equipment maintenance information and “
measure method for failure mode”
related to the renewal record are associated with the identification information of the device and identification information of each part of the device;
a section which executes at least one of event tree analysis and failure tree analysis for each part of the device on the basis of the identification information of each part of the device and the failure mode contained in the equipment maintenance information and obtains an analysis result; and
a section which creates a failure diagnosis database in which “
failure occurrence frequency”
, “
failure sign phenomenon”
, and “
failure cause”
contained in the equipment maintenance information are associated with the identification information of the device and the identification information of each part of the device for the analysis result and each failure mode in the analysis result, and the diagnosis engine comprising;
a section which refers to the risk assessment database and the anti-risk measure database before a failure occurs in the device and calculates along a time sequence a risk estimate amount in case of failure for each device on the basis of the failure occurrence frequency and the equipment stop loss;
a section which refers to the risk assessment database and the anti-risk measure database before a failure occurs in the device and calculates along the time sequence a maintenance cost in executing a measure method for each device in advance on the basis of the failure occurrence frequency, the measure method, the device part unit price, the personnel data, and the labor cost unit price data;
a section which outputs, as a maintenance period, a time point at which a sum obtained by adding the risk estimate amount and the maintenance cost along the time sequence is minimized; and
a section which refers to the failure diagnosis database on the basis of the identification information of the device and the failure mode when a failure has occurred in the device and outputs at least one of a failure cause and a failure sign obtained as a result of reference.
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Specification