April 2020 - ENEA

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Paride Meloni

Dear Reader,

Welcome to the April 2020 edition of the EUROSAFE newsletter, which has been prepared by the Nuclear Safety, Sustainability and Security Division of the Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA). This newsletter gives us the opportunity to present some recent activities in nuclear safety research as well as present and future infrastructures of great value for the international collaboration in this field.

The full-scale PERSEO experiment performed for the assessment of a passive decay heat removal system in the ‘90s has made available valuable data for the V&V process of T/H system codes, as the interest for the OECD/NEA benchmark exercise hosted by ENEA demonstrate.

Within the studies for the safety of the geological disposal of radioactive wastes a monitoring network is being developed to discriminate anomalous concentrations of gases from the ground.

Thermal-hydraulic infrastructures located in the SIET Laboratories (co-owned by ENEA) are currently exploited for the licensing of the Small Modular Reactor developed by Nuscale Power and for the assessment of passive safety systems in the frame of EURATOM H2020 projects.

The new Science Park under development in Bologna (Italy) will host the new European Data Center for Medium-range Weather Forecast and a new Tier-0 High Performance Computer (Leonardo).

During the preparation of this newsletter the situation with Codiv-19 has progressively worsened in Italy and other European countries are following. Despite this, our research has continued remotely at full speed, because we believe it is the best response to this critical moment. I hope that when you read the newsletter the worst moment has been overcome and that you may enjoy reading.

Paride Meloni
Head of Nuclear Safety, Sustainability and Security Division

PERSEO

PERSEO separate effect test facility to characterize full scale heat transfer in in-pool heat exchanger for decay heat removal

PERSEO is a full scale facility aimed at studying a new passive decay heat removal system operating in natural circulation. It was built at SIET laboratories in Piacenza (Italy) modifying the existing PANTHERS IC-PCC facility. The operating parameters are characteristic of a generic BWR type reactor or the secondary side of a generic PWR type reactor, avoiding valve on the primary circuit. Figure 1 shows the layout of the facility.

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Title picture Gas content analysis in saturated-unsaturated transition area

Gas content analysis in saturated-unsaturated transition area and in the groundwater to support the investigation for the geological disposal of radioactive wastes

Unexpected methane and CO2 releases from the ground and noble and conventional gases in groundwater could be favored by stress produced by geological and seismic phenomena. For this reason, ENEA together with the University if Ferrara are proposing a protocol aiming to detect gases in the soil, focusing the investigation in the transition area between saturated and unsaturated zone. By means of an appropriate monitoring network, it is possible to identify substantial sampling areas of gases conventionally present in the soil, such as methane and CO2, and of noble and conventional gases dissolved in groundwater.

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EUROSAFE2020
Thermal-hydraulic experimental activities at SIET Laboratories

Thermal-hydraulic experimental activities at SIET Laboratories

SIET S.p.A. is a small joint-stock company with public and private capital, ENEA is the main shareholder. SIET was born in 1983, is based in Piacenza on the banks of the Po River and is a testing laboratory capable of using sophisticated and powerful calculation codes to support experimental activity. SIET deals with scientific research in the thermotechnical sector with the primary purpose of carrying out tests for the safety of components and systems intended for nuclear plants aimed at the production of electricity.

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New Bologna Science Park: ECMWF, Leonardo HPC and ENEA

New Bologna Science Park: ECMWF, Leonardo HPC and ENEA

Thanks to funding from the Emilia Romagna Region, a new Science Park is under development in the outskirts of Bologna to host several scientific and technological agencies and institutions of national and international relevance.

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Cover Proceedings EUROSAFE2019

Proceedings EUROSAFE 2019

The Proceedings of EUROSAFE 2019 are online and can be downloaded

here...

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