The origins of the Metre Convention, the SI and the development of modern metrology 1

On 20 May, World Metrology Day commemorates the anniversary of the signing of the Metre Convention in 1875. This treaty provides the basis for a coherent measurement system worldwide.

Download Full-text

An interval assessment of the uncertainty of fire and emerging risk parameters

Issues of Risk Analysis ◽

10.32686/1812-5220-2018-15-74-79 ◽

2019 ◽

Vol 15 (6) ◽

pp. 74-79 ◽

Cited By ~ 1

Author(s):

E. Yu. Kolesnikov

Keyword(s):

Quantitative Estimation ◽

Probabilistic Approach ◽

Good Alternative ◽

Risk Indicators ◽

Parametric Sensitivity ◽

Qualitative And Quantitative ◽

Emerging Risk ◽

Risk Parameters ◽

Subjective Origin ◽

Modern Metrology

Uncertainty as an attribute of fire and emerging risks has both objective and subjective origin. Like measure uncertainty in modern metrology, the uncertainty in the risk theory has qualitative and quantitative aspects. Several methods for uncertainty quantifying are known. Taking into account the specifics of dangerous industrial objects, the probabilistic approach to quantitative estimation of their risk parameter uncertainty is inapplicable. A good alternative is to assess the fire and emerging risks in the interval setting. In addition to directly assessing the uncertainty of the results obtained — the risk indicators — it also makes it possible to estimate the parametric sensitivity of the model and to assess the conservatism of the assumptions made.

Download Full-text

Metrological Traceability and Roles of Certified Reference Materials

Science & Technology Journal ◽

10.22232/stj.2016.04.02.01 ◽

2016 ◽

Vol 4 (2) ◽

pp. 81-83

Author(s):

Akiharu Hioki ◽

Keyword(s):

Reference Materials ◽

Certified Reference Materials ◽

International System ◽

Metrological Traceability ◽

Chemical Analyses ◽

International Reference ◽

Calibration And Validation ◽

Traceability System ◽

System Of Units ◽

Metre Convention

Metrological traceability to an international reference, the International System of Units (SI) if possible, is important for the reliability of measurements. The international traceability system under the Metre Convention is briefly introduced. The simplest way to secure metrological traceability in chemical analyses is to utilise certified reference materials (CRMs) for calibration and validation. Finally, as examples of CRMs, NMIJ ones are described.

Download Full-text