Reliability-based service life assessment of concrete structures in nuclear power plants: optimum inspection and repair

Virtual Reality for Inspection, Maintenance, Operation, and Repair of Nuclear Power Plants (VRIMOR)

Metal And Concrete Inputs For Several Nuclear Power Plants

In nuclear energy systems, the major construction inputs are steel and concrete, which comprise over 95% of the material energy inputs. The evaluation of construction material inputs is central to life-cycle assessments for environmental impacts for nuclear and other non-fossil energy systems, and can provide a useful, if only qualitative, plausibility check for economics claims. This paper com...

Computational methods in service life modeling of concrete structures

Reinforced concrete (RC) Structures constructed over six decades ago are now approaching the end of their service life and showing serious level of deterioration and therefore, prediction of service life of structural materials and components has gained significance. With the increased efforts of researchers, development in computer knowledge and advancement in building materials science, it is...

OECD-NEA Workshop on the Evaluation of Defects, Repair Criteria & Methods of Repair for Concrete Structures in Nuclear Power Plants - Berlin 10/11 April 2002

The phenomenon of concrete cracking is one of the most frequently encountered deterioration at NPPs as it has been shown by a wide Survey of NPPs performed by IAEA in 1994-95 It can be due to a multitude of causes such as the normal ageing process (shrinkage, creep, prestressing force loss) as well as exposure to the environment (temperature variation, moisture, freeze/thaw, etc) The above ment...

Reliability of Passive Systems in Nuclear Power Plants

Following the IAEA definitions, [1], a passive component does not need any external input or energy to operate and it relies only upon natural physical laws (e.g. gravity, natural convection, conduction, etc.) and/or on inherent characteristics (properties of materials, internally stored energy, etc.) and/or ‘intelligent’ use of the energy that is inherently available in the system (e.g. decay ...