Monitoring Gamma Radiation Levels in the Ambient Air Surrounding Songkhla Rajabhat University: A Study from June to November 2022

Pitchpilai Khoonphunnarai; Sasikarn Thinnui; Chanyuth Fongsuwan; Murnee  Daoh; Thanapong Phanthong; Phayao  Yongsiriwit; Sayjai Petkongthong

Pitchpilai Khoonphunnarai Songkhla Rajabhat University
Sasikarn Thinnui Songkhla Rajabhat University
Chanyuth Fongsuwan Songkhla Rajabhat University
Murnee Daoh Songkhla Rajabhat University
Thanapong Phanthong Songkhla Rajabhat University
Phayao Yongsiriwit Songkhla Rajabhat University
Sayjai Petkongthong Songkhla Rajabhat University

Keywords: gamma radiation, ambient gamma dose rate, Songkhla Rajabhat University, RadEye G-10 gamma survey meter, Office of Atoms for Peace

Abstract

This study aims to assess ambient gamma radiation levels (ambient gamma dose rate) in the air surrounding Songkhla Rajabhat University and evaluate potential risks associated with these levels. Utilizing a portable airborne gamma radiation meter, specifically the Thermo Scientific RadEye G-10 Gamma Survey Meter, measurements were conducted daily from June to November 2022 across all buildings within the university campus. Analysis of the collected data revealed ambient gamma dose rate ranges of 0.04-0.37, 0.04-0.36, 0.04-0.36, 0.04-0.35, 0.03-0.34, and 0.02-0.33 microSv/hr for June through November, respectively. The average ambient gamma dose rates for each month were calculated as follows: 0.125±0.057, 0.132±0.054, 0.135±0.055, 0.128±0.052, 0.120±0.051, and 0.115±0.050 microSv/hr, respectively. These values were found to be within normal levels, falling below the recommended range of 0.05-0.20 microSv/hr by the Office of Atoms for Peace. Consequently, the ambient gamma dose rate in the air surrounding Songkhla Rajabhat University poses no harm to staff, students and the people.