Despite its geological importance, the Earth's volcanic activity has only recently been studied as a global system, with the advent of sophisticated airborne and spaceborne remote sensing systems that safely and economically provide global access at will. Particularly relevant to this approach are global studies of the effects on weather and climate caused by volcanic solid/gaseous products and thermal flux into the environment. To study such time-varying phenomena, observations of volcanic emissions spectral response, acquired simultaneously at a variety of wavelengths from ultra-violet to infra-red, could yield relevant information on the compositions and concentrations of environmentally important components, such as volcanically generated sulphur compounds (e.g., SO2H2SO4), and on volcanoes thermal behaviour. For this purpose, a multi-band imaging spectrometer, dedicated to volcanological observations (VEXUVIO, Visible EXplorer Ultra Violet Infra-red Observer) has been designed to be flown on-board EURECA (EUropean REtrievable CArrier) spacecraft, to be launched by the European Space Agency on the NASA Space Shuttle in 1996. In order to analyse potential observation scenarios with this sensor, volcanoes active during 1991 were studied using a computer code to simulate VEXUVIO capabilities on-board EURECA. Some parameters, representative of the sensor viewing geometry and of the volcanoes observation conditions, are exploited, and several plots are reported, shown their values during the six-months nominal EURECA mission. Despite the limited science objectives of EURECA program and a tightly constrained operational environment, our simulation demonstrates that a reasonable program of volcanologically interesting time-series observations can be carried out during the planned sixmonths lifetime of the EURECA mission.