ACES focuses on safety-critical concrete infrastructure of current and next generation nuclear power plants

The project will contribute to the development of ageing mechanisms understanding, physics-based advanced modelling, in-service inspection methods development, structural significance assessment, and end-use guidance.

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What is ACES projects in a nutshell

The purpose of ACES is to advance the assessment of safety performance of safety-critical concrete infrastructure by addressing remaining scientific and technology gaps for the safe and long term operation of nuclear power plants.

Project's goal

The main objective of ACES is to advance the assessment of safety performance of civil engineering structures by solving the remaining scientific and technological problems that currently hinder the safe and long-term operation of nuclear power plants reliant on safety-critical concrete infrastructure. Proper understanding of deterioration and ageing mechanisms requires a research strategy based on combined experimental and theoretical studies, following a multidisciplinary approach, and utilizing state of the art experimental and modelling techniques. Material characterization at different length scales (i.e. nano, micro, meso, and macro scales) is necessary, focusing on the physical understanding of the degradation processes (e.g. neutron and gamma radiation, internal swelling reactions, liner corrosion, etc.) as well as physical phenomena (drying, creep, shrinkage, etc.), and their influence on macroscopic mechanical properties and structural/ functional integrity of the components.

Expected Outcomes

The ACES project aims at having a significant impact on the safety of operational Gen II and III NPPs and impacting the design of next-generation plants. ACES will improve the understanding of ageing/ deterioration of concrete and will demonstrate and quantify inherent safety margins introduced by the conservative approaches used during design and defined by codes and standards employed through-out the life of the plant. The outcomes from ACES will therefore support the LTO of NPPs. This will be achieved by using more advanced and realistic scientific methods to assess the integrity of NPP concrete infrastructure. The project will provide evidence to support the methods by carrying out various tests, including large scale tests based on replicated scenarios of NPPs.

News, posts and events

Our partners showcased collaborative efforts within the Exhibition of Mobile Robotics for Corrosion Inspection & maintenance in Nuclear Context - Pipe Inspection. Visitors had the opportunity to witness the mobile platform moving in a transparent pipe by rotating its arm and deploying the NDT probes for internal corrosion inspection. The booth received an overwhelming response, …
These days, the report on characterization of neutron and gamma irradiated concrete constituents is being finalized. This massive experimental work aimed at compiling a database of experimental data which help the nuclear facility operators to assess the residual performance of concrete in highly irradiated environment. Typically, these are the biological shielding structures which are designed …
In our recent study, we've made significant strides in comprehending the complex phenomena of concrete creep and shrinkage. This research significantly enhances our understanding of concrete behavior in crucial applications like nuclear power plants. It has the potential to drive improvements in construction techniques and materials. You can read the entire study now here.

Project's Partners

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WP 1

State-of-the-art of quantitative assessment of ageing of concrete SSC


WP 2

Corrosion assessment of embedded liners in concrete



WP 3

Characterization, prediction, and monitoring of internal swelling reactions in concrete

Christophe.Marique (at)

WP 4

Delayed strains of containment buildings in operational and accidental conditions


WP 5

Assessing the performance of irradiated concrete


WP 6

Dissemination, communication and training



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