Photo: Rolf van Melis
Contract research in the field safety and reliability analysis
Contract research means to us, finding transparent and practical solutions for the problems that our customers or promotional institutes present. Our participation in a wide variety of research projects has led to an extensive list of publications. Some examples can be found on this page.
HRA evaluation concept
RISA GmbH developed for the VGB-Power-Tech e.V. (European industrial union for electricity and heat production) an evaluation concept for human error in technical systems and transformed this concept into the software HRA (Humanly Reliability Analysis). The HRA programme uses the Swain method.
Structural reliability
In the following EU financed projects we were able to exhibit our knowledge in the spheres probabilistic, descriptive software, GIS link-up and system and data integration:
SEISLINES
In the SEISLINES project, the structural reliability of underground mains water pipes was tested for different stresses, including earthquakes. This structural reliability data serves as input for a decision support system which, considering the pipeline material, determines the monetary consequences of different maintenance measures (repair, preventive replacement, preventive maintenance).
LEAKING
The goal of the LEAKING project is to develop innovative procedures for leakage detection in underground water pipes using electromagnetic waves. The (unsure) output of these devices is then linked with the structural reliability data using the Bayes method. This improves the statement of the structural reliability to serve as input for a decision support system which, depending on the findings, cannot only suggest maintenance measures but also a schedule for the next measurement date.
SEWERINSPECT
In the SEWERINSPECT project an integrated decision support system is being developed, for which the main challenge is, how data from CCTVs can be transferred into maintenance operations. The computer system being developed will store the evaluations of the digital recordings from the CCTV inspections on a database. This system should enable the maintenance engineers to access all stored infomation for the examined part of a sewage system. Within the project probabilistic models will be developed for the evaluation of structural parameters, such as pipe material, pipe wall strength and load parameters, such as seismic influences. In these models the deterioration of the state of a sewage system is also considered, caused for example by corrosive grounds, industrial waste, ground water and/or loss of the surrounding soil.
