The Use of Condition Monitoring Information for Maintenance Planning and Decision-Making
Activity Acronym:
SOS-2.2
Authors:
Kari Laakso, Tony Rosqvist, Jette L. Paulsen
Abstract:
A survey is presented outlining the use of condition monitoring information in
three Nordic nuclear power plants. The questions of the survey relate to the role
of condition monitoring in strategic, as well as operative, maintenance planning
and decision-making. The survey indicates that condition monitoring is increasingly
implemented at nuclear power plants, but very selectively and in a rather
slow pace for predictive maintenance. A combined strategy of condition based
maintenance and predetermined preventive maintenance is applied for important
equipment such as main circulation pumps and steam turbines. A realistic aim is
to reduce the number of costly or error prone maintenance and disassembling
inspection activities by condition monitoring given that the approach enables a
good diagnosis and prediction. Systematic follow-up and analysis of such condition
monitoring information followed by a case-specific planning and decision
making of timely and rightly directed maintenance actions can justify an extension
of the intervals of a number of predetermined inspection, maintenance or
periodic testing tasks.