Maringer F.J.,BEV Bundesamt fur Eich und Vermessungswesen |
Suran J.,Czech Metrology Institute |
Kovar P.,Czech Metrology Institute |
Chauvenet B.,CEA Saclay Nuclear Research Center |
And 15 more authors.
Applied Radiation and Isotopes | Year: 2013
In 2011 the joint research project Metrology for Radioactive Waste Management (MetroRWM). 11This joint research project is financially supported by the European Commission in the frame of the European Metrology Research Programme EMRP (www.emrponline.eu) undertaken by several EU Member States under the Article 169 initiative, JRP contract identifier EMRP ENV09 MetroRWM. of the European Metrology Research Programme (EMRP) started with a total duration of three years. Within this project, new metrological resources for the assessment of radioactive waste, including their calibration with new reference materials traceable to national standards will be developed.This paper gives a review on national, European and international strategies as basis for science-based metrological requirements in clearance and acceptance of radioactive waste. © 2013 Elsevier Ltd.
Gallegos J.G.,CSIC - National Institute of Aerospace Technology |
Benyon R.,CSIC - National Institute of Aerospace Technology |
Avila S.,Enagas SA |
Benito A.,Enagas SA |
And 11 more authors.
Journal of Natural Gas Science and Engineering | Year: 2015
Moisture content is a key factor regardless of the activity carried out inside the natural gas industry (production, processing, transmission, etc.). Not only does the efficiency of the final product, known as heating value, decrease when the water content is high, but it can also trigger potentially dangerous conditions due to the formation of hydrates, that can block pipelines and damage pumping devices and produce other negative effects. For these reasons, accurate measurement and control of humidity is absolutely essential. However, current practice for such moisture measurements is for the devices to be calibrated at atmospheric pressure and in nitrogen or air as the matrix gas, conditions that vary significantly from those present in the actual industrial process. For that, eleven hygrometers based on different measurement principles (chilled-mirror, electrolytic sensor, a spectroscopic analyzer, polymeric and metal oxide humidity sensors) have been compared at facilities of the main carrier of natural gas in Spain, using natural gas at absolute pressures between 0.1MPa and 6MPa, and for a range of water content from 13ppmv to 250ppmv. Their relative performance is described in terms of the response times, long term stability, hysteresis and behaviour under large pressure changes. Most instruments, exceptions are detailed in the article, show good behaviour regarding response time, hysteresis and under sudden pressure changes. In contrast, drift can be identified in most of the aluminium oxide probes tested. © 2015 Elsevier B.V.
Merlone A.,INRIM - Istituto Nazionale di Ricerca Metrologica |
Lopardo G.,INRIM - Istituto Nazionale di Ricerca Metrologica |
Antonsen I.,Justervesenet |
Bell S.,National Physical Laboratory United Kingdom |
And 23 more authors.
AIP Conference Proceedings | Year: 2013
Climate change and its consequences require immediate actions in order to safeguard the environment and economy in Europe and in the rest of world. Aiming to enhance data reliability and reduce uncertainties in climate observations, a joint research project called MeteoMet-Metrology for Meteorology started in October 2011 coordinated by the Italian Istituto Nazionale di Ricerca Metrologica (INRiM). The project is focused on the traceability of measurements involved in climate change: surface and upper air measurements of temperature, pressure, humidity, wind speed and direction, solar irradiance and reciprocal influences between measurands. This project will provide the first definition at the European level of validated climate parameters with associated uncertainty budgets and novel criteria for interpretation of historical data series. The big challenge is the propagation of a metrological measurement perspective to meteorological observations. When such an approach will be adopted the requirement of reliable data and robust datasets over wide scales and long terms could be better met. © 2013 AIP Publishing LLC.
Garcia-Torano E.,CIEMAT |
Tzika F.,European Commission |
Burda O.,Physikalisch - Technische Bundesanstalt |
Peyres V.,CIEMAT |
And 9 more authors.
International Journal of Metrology and Quality Engineering | Year: 2014
Every year millions tons of steel are produced worldwide from recycled scrap loads. Although the detection systems in the steelworks prevent most orphan radioactive sources from entering the furnace, there is still the possibility of accidentally melting a radioactive source. The MetroMetal project, carried out in the frame of the European Metrology Research Programme (EMRP), addresses this problem by studying the existing measurement systems, developing sets of reference sources in various matrices (cast steel, slag, fume dust) and proposing new detection instruments. This paper presents the key lines of the project and describes the preparation of radioactive sources as well as the intercomparison exercises used to test the calibration and correction methods proposed within the project. © 2014 EDP Sciences .