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© 2016 Electric Power Research Institute, Inc. All rights reserved.
4th International Conference on Nuclear Power Plant Life Management
Tina Taylor,
Deputy Chief Nuclear Officer
25 October 2017
Condition Based
Maintenance and On-line
Monitoring
2© 2017 Electric Power Research Institute, Inc. All rights reserved.
Topics
Condition Based Maintenance
Monitoring to Support a Maintenance Strategy
Value Based Maintenance
On-line Monitoring
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Conditioned Based Maintenance:
Stages of Maintenance
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5© 2017 Electric Power Research Institute, Inc. All rights reserved.
Tools that Support Maintenance Strategy Development
PMBD
Maintenance Guides
Process Guides
WO Data Visualization Tool
Cost Analysis Tool
Maintenance
Strategy
Development
6© 2017 Electric Power Research Institute, Inc. All rights reserved.
Preventive Maintenance Basis Database
Maintenance
Strategy
Development
PMBD
Maintenance Guides
Process Guides
WO Data Visualization Tool
Cost Analysis Tool
PMBD Favors a Condition Based Maintenance
Strategy over a Time Based Strategy
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Maintenance Guides
Maintenance
Strategy
Development
PMBD
Maintenance Guides
Process Guides
WO Data Visualization Tool
Cost Analysis Tool
8© 2017 Electric Power Research Institute, Inc. All rights reserved.
Process Guides – Maintenance Strategy Assessment Tool
Maintenance
Strategy
Development
PMBD
Maintenance Guides
Process Guides
WO Data Visualization Tool
Cost Analysis Tool
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“THE RIGHT RELIABILITY FOR THE RIGHT COST”
Value-Based Maintenance
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Data Visualization
Maintenance
Strategy
Development
PMBD
Maintenance Guides
Process Guides
WO Data Visualization Tool
Cost Analysis Tool
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VBM Step 1: Know Your Costs - Work Order Data Visualization Tool
Allows users to easily view,
trend, and compare historical
WO data in order to understand
where and what costs are being
spent related to a given unit, site,
or fleet’s maintenance strategy.
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WO Data Visualization Tool – DashboardMultiple Dashboard Views (Standardized)
WO Data Back 10 Years
Additional Filters
Further Drill-down Options
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Cost Analysis Tool
Maintenance
Strategy
Development
PMBD
Maintenance Guides
Process Guides
WO Data Visualization Tool
Cost Analysis Tool
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VBM Step 2: Develop a Strategy - Cost Analysis Tool (CAT)
• A web-based tool to weigh
reliability and cost
considerations
• Identify and reduce preventive
maintenance that has no
return value in equipment
reliability.
“Right Reliability for the
Right Cost”
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Plant Monitoring Initiative: Next Level of Strategy
Mission:
Reduce operations and
maintenance costs through
monitoring to replace (or
extend the intervals of)
preventive maintenance
and surveillance tasks
Implementation
Obtain Data
Transport Data
Secure the Data
Utilize the Data
16© 2017 Electric Power Research Institute, Inc. All rights reserved.
Plant Monitoring – Foundational Elements
Implementation• Developing a Technical Basis for Using On-Line Equipment Condition Monitoring to Reduce
Time-Based Preventive and Predictive Maintenance
• Online Monitoring Guide for Equipment Diagnostics and Reliability
Obtain Data• Wireless Sensor Survey and Generic specification – 1st Qtr 2018
Transport Data• Use of LTE Cellular Network and Distributed Antenna Systems to Improve Connectivity and
Increase Data Transfer
Secure the Data • Cyber Security: Isolation for Maintenance, Monitoring, and Diagnostic Applications in Nuclear
Power Facilities
Sensor Survey and Development Acceleration• Evaluation of best suited sensors
• Electro Magnetic Compatibility Testing
• Sensor Specifications
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New Focus for Plant Monitoring
Previous Plant Monitoring Approach
� Focus on safety related equipment
� Permanently mounted, wired sensors
� Data parameters feed onto operation domain
� Advanced Pattern Recognition (APR) models
built for establishing trending/alert levels
� Centralized monitoring centers
New Plant Monitoring Approach
� Focus on components important to production
– Forced loss rate minimized
– Megawatt losses minimized
� Buildout of wireless infrastructure
� Continuous to near continuous monitoring
– Wired and wireless solutions
� Automation of manual PM tasks
� Maximize maintenance frequencies
� Minimize part inventory
THEN
NOW
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Combined Approach
PMBD
Maintenance Guides
Process Guides
WO Data Visualization
Tool
Cost Analysis Tool
Maintenance
Strategy
Development
Implementation
Obtain Data
Transport Data
Secure the Data
Utilize the Data
PLANT
MONITORING
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Potential Value of Automated Condition Monitoring
OR
Horizontal Pump(from EPRI Preventive Maintenance Basis
Database)
Annualized Task
Hours Without
Monitoring
Annualized Task
Hours With
Monitoring
169 19
Significant O&M
savings with
monitoring
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Looking to the future
• Plant monitoring adds to a value based
maintenance strategy, resulting in less
manual data collection and analysis.
• Performing less intrusive time based
maintenance can yield better reliability
by relying on intrusive maintenance
only when necessary.
• Future analytical approaches can
leverage the monitoring infrastructure
to even greater savings.
21© 2017 Electric Power Research Institute, Inc. All rights reserved.
Together=Shaping the Future of Electricity
