Categories
Fieldwork

First sampling at the HotBENT experiment for 2022

Today we started the first gas sampling campaign planned in 2022 at the HotBENT experiment (Grimsel Test Site). For this purpose, Entracers prepared additional samplers that will be available for future projects of our customers.

Categories
Methods Publications

Gas-bentonite interactions in Engineered Barrier Systems

A collaborative research project involving the Swiss Federal Institute of Aquatic Science and Technology, the Institute of Geological Sciences at the University of Bern, and Posiva Oy targeted gas-bentonite interactions in relation to the gas dynamics in Engineered Barrier Systems. The outcome of the study has been published in the following open access article:

  • Tomonaga, Y., Wersin, P., Rufer, D., Pastina, B., Koho, P., Ville, H., & Kipfer, R. (2022). Gas-bentonite interactions: Towards a better understanding of gas dynamics in Engineered Barrier Systems. Appl. Geochem., 138, 105205, doi:10.1016/j.apgeochem.2022.105205.

Interested in conducting further investigations based on the same methods? Entracers GmbH can now provide the required know-how as well as the related analytical facilities!

Categories
Facilities

The pressure wave of the Tonga volcanic eruption reaches our miniRUEDI

On Jan. 15th 2022, while running test measurements, our miniRUEDI was able to catch the pressure wave produced by the Hunga Tonga volcanic eruption.

Categories
Facilities Fieldwork

Entracers miniRUEDI operational at the Grimsel Test Site

The first miniRUEDI of Entracers is ready to perform gas measurements for the GAST experiment at the Grimsel Test Site. We are looking forward to the developments of this project managed by Nagra!

Categories
Facilities Methods

Entracers acquired the first patented GE-MIMS module

Let’s call it “Christmas present”: Entracers is now the proud owner of the first patented (or, more precisely, “pat. pending”) GE-MIMS module which allows quantitative gas analysis in water using the miniRUEDI. Such Eawag-patented GE-MIMS modules can be purchased at Gasometrix GmbH.

Categories
Fieldwork

First sampling of Phase 27 at the FE experiment

New gas samples were collected by Entracers from the Full-scale Emplacement (FE) experiment on Nov. 11th-12th, 2021. This was the first sampling planned for Phase 27 of the Mont Terri Project.

A picture of Entracers “in action” can be found in the Mont Terri Rock Laboratory field report.

Categories
Fieldwork

Second gas sampling at the HotBENT experiment

On Oct. 28th 2021 Entracers collected new samples at the HotBENT experiment at the Grimsel Test Site that will provide the data basis to interpret future changes in the gas composition within the drift. After the sampling we enjoyed the nice autumn weather on the way back to Zurich.

Categories
Fieldwork

Gas monitoring running at the completed HotBENT experiment

After the revision of one of the valves of the gas circulation system at the HotBENT experiment, on Sept. 16th 2021 the gas monitoring of all sampling ports within the drift was launched. This will allow observation of possible changes in the gas composition even during the early stages of the experiment.

The plug of the HotBENT experiment. Note the considerable amount of cables connected to the respective sensors within the HotBENT drift.
Categories
Facilities

Entracers’ miniRUEDI is here!

After a couple of months Entracer’s first portable membrane inlet mass spectrometer system (aka miniRUEDI) is ready to determine gas concentrations in the environment. A few applications that exemplify the flexibility of this instrument:

Testing the miniRUEDI

Many thanks are due to Matthias Brennwald at Gasometrix GmbH for supporting its construction!

Categories
Facilities

Almost ready to run

A few more custom parts and our portable membrane inlet mass spectrometer will be ready to run.