Full-scale Engineered Barriers Experiment (FEBEX) II - Heater Retrieval

The third stage involved the removal of the heater from the Engineered Barrier System (EBS). This was a complicated task due to the size and weight of the heater (4.5 meters long and 12 tonnes in weight).

Preparatory work for removal of the heater
Removal of the heater from the bentonite

With the heater removed the steel liner keeps the EBS in place
View of the steel liner after retrieval of the heater

Close up of the steel liner after retrieval of the heater


Full-scale High Level Waste Engineered Barriers (FEBEX) - Excavation Phase

The GTS underground facilities are also available to interested 3rd parties for underground testing and research. The GTS offers cost-effective access to a fully developed, well characterised underground research facility with round the year logistical support - please contact Dr. Ingo Blechschmidt, Head of the Grimsel Test Site, for further details.