remaint maintenance 3 - fortumapps.fortum.fi/nuclearservices/remaint_maintenance.pdfrun-to-failure...
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ConCentrate on produCtion, reliability, safety and profitability ReMaint® Nuclear maintenance concept is a management model of nuclear power plant maintenance. The concept supports to fulfil constantly tightening demands to ensure reliable, safe and profitable operation of a nuclear power plant.
logiCal steps to improved maintenanCe and availability The concept consists of steps to refocus maintenance activities and tasks based on criticality and prioritisation. Advanced methodologies define maintenance strategies and support resource allocation to achieve proactive and optimised maintenance. Key Performance Indicators (KPIs) are derived from plant needs and feedback process is implemented to ensure capability of continuous self improvement.
Key benefits of implementing the ConCept at loviisa nuClear power plant, finland (example) Run To Failure (RTF) strategy implementation resulted in reallocation of resources for more productive work
• Continuous reduction of cumulative radiation dosage [man mSV]
• Decreasing WO backlog for critical components resulting in increased on-time delivery
remaint® nuclearMaintenance conceptFortum ReMaint® Nuclear maintenance concept optimises maintenance activities. It helps you to remove unnecessary maintenance tasks and saved resources can focus on critical systems, structures and components.
Fortum, GenerationP.O. Box 100, FI-0048 FORTUM, FinlandTel. +358 10 45 11, @FortumNuclearwww.fortum.com/nuclearservices
For further information:Miko OlkkonenTel. +358 40 518 [email protected]
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1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016
Loviisa Load Factor1
Avg. Unit Capability Factor2
for all PWR in the World
high load faCtors (% per year)
personnel costsmaterial costsgeneral costs
unavailability costsfunctional failure costsproductivity and qualityreworkshigh inventory costsobsoleted components
investmentsfuel costs
service costs
procurement costslogistic costs
decreased efficiencyunproductive activities
over mainentancereduced lifetime
O&M feedback data update
Proactive maintenance
1 2 3 4Highlycritical
Critical Noncritical
Run to failure
History data analyses
Investments and refurbishment
Assessment of improvement areas
Performance indicators (KPI’s)
CritiCality Classes
Functional failure
Non functional
failure
1 2 3
PreventiveTime based maintenance
Periodicmaintenance
Periodicinspection
Functional failure
Non functional
failure
1 2 3
PredictiveCondition based
maintenance
Surveillance
Online inspection
Processmonitoring
Condition monitoring
Functional failure
Non functional
failure
1 2
CombinedPredictive/Preventive
consolidated maintenance
Periodic maintenance
Condition monitoring
based maintenance
Non functional
failure
4
CorrectiveRun-to-failure maintenance
Observation
Functional failure
trendable extensive moderate minimum
Fuel pool(at shutdown)
Fuel pool(at power)
WEATHER(at shutdown)
WEATHER(at power)
FIRE(at shutdown)
FIRE(at power)
SEISMIC
FLOOD(at shutdown)
FLOOD(at power)
INTERNAL(at shutdown)
INTERNAL(at power)
deCreasing proCess aCCident risK in loviisa
risK reduCtion (psa level 1)
remaint® nuClear - equipment maintenanCe strategies enhanCed tiered maintenanCe
maintenanCe strategies
CorreCtive maintenanCe worKs
Fortum, GenerationP.O. Box 100, FI-0048 FORTUM, FinlandTel. +358 10 45 11, @FortumNuclearwww.fortum.com/nuclearservices
For further information:Miko OlkkonenTel. +358 40 518 [email protected]