Calibration of radiation protection area monitoring instruments in Sudan

I. I. Suliman, B. E. Youssif, A. A. Beineen, M. Hassan

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This article presents results of measurements for the calibration of radiation protection area monitoring instruments carried out during the period 2006-2008 at Secondary Standard Dosimetry Laboratory of Sudan. The work performed included quality assurance measurements, measurements for the dosimeter calibrations and uncertainty analysis. Calibrations were performed using 137Cs gamma ray sources produced by OB 85 and OB 34/1 gamma calibrators producing air kerma rate that ranged from 10 μGy/h to 50 mGy/h. Area monitoring instruments were calibrated in terms of ambient dose equivalent, H (*)(10) derived using air kerma to ambient dose equivalent conversion coefficients. Results are presented for 78 area monitoring instruments representing most commonly used types in Sudan. Radioactive check source measurements for the reference chamber showed deviation within 1% limit. The accuracy in the beam output measurements was within 5% internationally considered as acceptable. The results highlighted the importance of radiation protection calibrations. Regulations are further need to ensure safety aspect really meet the required international standards.

Original languageEnglish
Pages (from-to)1578-1581
Number of pages4
JournalRadiation Measurements
Volume45
Issue number10
DOIs
Publication statusPublished - Dec 2010

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Keywords

  • Ambient dose equivalent
  • Calibrations
  • Radiation dosimetry

ASJC Scopus subject areas

  • Radiation
  • Instrumentation

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