The TIESTE-MINOSSE code, developed at the ENEA to preliminarily investigate core dynamics relevant to metal cooled fast reactor and ADS, has been implemented to analyse transients in the RC1 1 MW swimming pool TRIGA reactor existing at the Casaccia Centre. In the first part of the work, the TIESTE-MINOSSE improvement and validation on TRIGA dynamics is described. In particular, reactivity inser...

The major parts of the TRIGA-LASER experiment for collinear laser spectroscopy on exotic fission products from the TRIGA research reactor [1] are now installed and are currently being commissioned. Besides the exploration of unknown ground in the nuclear chart with respect to spins, moments and charge radii, the experiment is the prototype of the the LaSpec experiment [2] at FAIR, GSI and will ...

This work presents the preliminary design of a PGNAA (Prompt Gamma Neutron Activation Analysis) facility at the TRIGA IPR-R1 research reactor of the CDTN. The results of experimental and calculated neutron flux in a vertical tube are presented and discussed. The results confirm the technical feasibility of the installation of PGNAA at the TRIGA reactor and the possibility of enhancing the appli...

The 250 kW TRIGA Mark II research reactor, Vienna, operates since 7 March 1962. The initial criticality was achieved with the first core loading of 57 fuel elements (FE) of same type (Aluminium clad fuel with 20% enrichment). Later on due to fuel consumption SST clad 20% enriched FE (s) have been added to compensate the reactor core burn-up. In 1975 high enriched (HEU) TRIGA fuel (FLIP fuel = F...

This paper presents an algorithm for numerical simulations of nonsteady states of the TRIGA MARK II reactor in Vienna, Austria. The primary focus of this work has been the development of an algorithm which provides time series of integral neutron flux after reactivity changes introduced by perturbations without the usage of thermal-hydraulic / neutronic numerical code systems for the TRIGA reac...

At the ENEA TRIGA research reactor (Casaccia Research Center, Rome), a new neutron collimator has been designed and installed at the neutron tangential channel. This collimator, that is part of a neutron/X-ray facility for NDT analysis, was experimentally characterized and optimized in terms of thermal neutron flux, its spatial/energetic distribution, photon air KERMA and effective beam diamete...

The 250kW TRIGA Mark II research reactor, Vienna, is equipped with experimental facilities inside and outside the reactor core. Outside the core, there are four beam tubes (three radial and one tangential beam tube), a thermal column and a neutron radiography collimator, supplying neutrons for irradiation experiments. These experiments include neutron radiography, neutron tomography, neutron ac...

Pseudoaneurysm is a rare complication of arteriovenous-grafts (AVGs) used in hemodialysis patients. Rupture and bleeding are the most common complications. In this case report, I present the case of a successful repair of an infected pseudoaneurysm that occurred at the AVG, its surgical ligation and the insertion of a new graft segment. Konstantina Triga ( ) Corresponding author: [email protected]...