Nine Quintessa consultants visited the Low-Level Waste Repository (LLWR) in May 2025, taking up an important opportunity to ...

Richard Metcalfe attended the conference and gave a presentation on the importance of using multiple lines of evidence in the containment risk assessment (CRA) for underground storage of CO₂. Such an ...

A number of reports have been published on the work that Quintessa has undertaken for the Central Organisation for Radioactive Waste (COVRA) relating to its domal salt repository design. Three reports ...

Reports in AMBER are text file summaries the values of the selected parameters, both inputs to the model and outputs from the calculation Graphs in AMBER can be generated to show the evolution with ...

Quintessa employees have been involved in developing international guidance for safety assessments of radioactive waste disposals over many years, including both the International Atomic Energy Agency ...

Quintessa has recently provided an independent review of containment risks in the Endurance aquifer for CO₂ storage of the Northern Endurance Partnership (NEP)’s Carbon, Capture, Usage and Storage ...

PITZER is a PHREEQC version of the Yucca Mountain EQ3/6 thermodynamic database that includes 'Pitzer data' to parameterise the activity coefficients of aqueous species.

Quintessa recently participated in the 7ᵗʰ workshop of the DECOVALEX project, hosted by the Korean Atomic Energy Research Institute (KAERI) in Busan, South Korea. The DECOVALEX project (DEvelopment of ...

Experts from 15 Member States, including Richard Little from Quintessa, recently attended a technical meeting at the International Atomic Energy Agency (IAEA) in Vienna to examine suitable strategies ...

On Wednesday 22ⁿᵈ November, our Warrington Office is moving.

System analysis methods have been widely applied in the field of safety and performance assessment for radioactive waste disposal and geological storage of carbon dioxide. As part of the analysis, the ...