CTBT Science and Technology Conference 2021 (SnT2021)

Statistical study of the Cs-137 detections at RN43 station

O2.4-406

29 Jun 2021, 14:05

15m

Stage 2 (Online)

Oral T2.4 - Atmospheric and Subsurface Radionuclide Background and Dispersion T2.4 - Atmospheric and Subsurface Radionuclide Background and Dispersion

Speaker

Mr Mohamed Mahmoud Mounja (Mauritania National Authority of Radiation, Safety and Nuclear Security (ARSN), Nouakchott, Mauritania)

Description

This work is the result of a joint collaboration between the Italian and the Mauritanian National Data Centers. Radionuclide station RN43 in Mauritania was established in Nouakchott on 6 November 2006. The historical analysis of the occurrence of relevant radionuclides at RN43 over the past ten years showed that the main contributor was Cs-137, causing several level 3 and level 4. A descriptive statistical analysis of the Cs-137 occurrence was performed and two types of parametric process control methods were applied: the “Shewhart Control Chart” and the “Exponentially Weighted Moving Average (EWMA) Control Chart”. The results of both methods were then analyzed in order to reveal seasonality, possible sources of Cs-137 and correlation with atmospheric phenomena.

Promotional text

Desert wind is blowing; Cesium fro the desert to the Ocean

Presentation materials

RN43 presentation (1).pptx

zoom_0.mp4