- Rapport
- Kärnkraft
Instrumentation and Modelling of a Reactor Containment Building
| 2018:526 | Tobias Gasch, Lamis Ahmed, Richard Malm
The most important safety barrier in a nuclear power plant is the reactor containment, a post-tensioned concrete structure enclosing the reactor.
The pre-stressing tendons prevent cracking of the concrete in case of a reactor accident, why the tension in the tendons is crucial to the integrity of the reactor containment. The tendon forces decrease over time, so to ensure the integrity of the reactor containment, it is important to monitor the tendon forces.
This report suggests an instrumentation system of the reactor containment for the Finnish nuclear power plant Olkiluoto 2, for measuring the global and local deformations of the structure, moisture and temperature. The system could be used for continuous long-term measurements and during the periodic pressure tests.