Avian, Diana Nur (2026) Analisis Ketidakpastian Pengukuran pada Kalibrasi Dosimeter Saku dan Surveimeter Gamma di Balai Pengaman Alat dan Fasilitas Kesehatan (BPAFK) Surabaya. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Paparan radiasi yang melebihi nilai batas dosis dapat menyebabkan berbagai efek negatif bagi pekerja radiasi sehingga diperlukan alat ukur radiasi seperti dosimeter saku dan surveimeter gamma yang akurat dan terkalibrasi secara berkala. Penelitian ini bertujuan untuk mengetahui nilai faktor kalibrasi dan ketidakpastian bentangan dari dosimeter saku dan surveimeter gamma di berbagai pabrikan pada tahun 2016-2019. Sumber radiasi yang digunakan adalah Cesium-137 dengan alat ukur standar PTW Unidos T10022/SN 453 di BPAFK Surabaya. Proses kalibrasi berpedoman pada IAEA Safety Reports Series No. 16 dan JCGM 100:2008 (GUM). Pengukuran alat dilakukan dengan 5 kali pengulangan dan pada surveimeter gamma terdapat variasi absorber (tanpa absorber, absorber 1/10, absorber, 1/100 dan absorber 1/1000). Data total yang digunakan berjumlah 654 data, terdiri atas 149 data dosimeter saku analog (3 pabrikan), 372 data dosimeter saku digital (10 pabrikan) dan 133 data surveimeter gamma (18 pabrikan). Data diolah dengan bantuan Excel untuk analisis statistik dan Python untuk analisis komparatif dengan melihat visualisasi grafik dari hasil perhitungan. Hasil kalibrasi ketiga alat menunjukkan bahwa nilai rata-rata faktor kalibrasi berada di rentang ideal 0,8-1,2. Berdasarkan standar deviasi ketidakpastian bentangan, stabilitas dan kepresisian dosimeter saku digital (0,23-0,56) lebih unggul daripada dosimeter saku analog (1,06-2,36). Terdapat beberapa alat dari pabrikan tertentu di tahun tertentu yang mengindikasikan alat tidak layak karena berbagai faktor. Pada surveimeter gamma, ketidakpastian bentangan di berbagai jenis absorber secara umum berada di bawah 6 dan variasi tertinggi terjadi pada penggunaan absorber 1/100.
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Radiation exposure exceeding dose limits can cause various adverse effects in radiation workers, therefore, accurate and regularly calibrated radiation measurement instruments, such as pocket dosimeters and gamma survey meters, are required. This study aims to determine the calibration factors and measurement uncertainty of pocket dosimeters and gamma survey meters from various manufacturers between 2016 and 2019. The radiation source used was Caesium-137, with the standard measuring instrument PTW Unidos T10022/SN 453 at BPAFK Surabaya. The calibration process followed IAEA Safety Reports Series No. 16 and JCGM 100:2008 (GUM). Measurements were carried out with five repetitions, for gamma survey meters, different absorber configurations were applied (no absorber, 1/10, 1/100, and 1/1000). A total of 654 data points were used, comprising 149 from analogue pocket dosimeters (3 manufacturers), 372 from digital pocket dosimeters (10 manufacturers), and 133 from gamma survey meters (18 manufacturers). Data were processed using Excel for statistical analysis and Python for comparative visualisation. Results showed that the average calibration factor values for all three devices fell within the ideal range of 0,8-1,2. Based on the standard deviation of measurement uncertainty, digital pocket dosimeters (0,23-0,56) were more stable and precise than analogue ones (1,06-2,36). Some instruments from specific manufacturers in certain years were deemed unsuitable for use due to various factors. For gamma survey meters, measurement uncertainty across absorber types was generally below 6, with the highest variation occurring at the 1/100 absorber.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Kalibrasi, Dosimeter Saku, Surveimeter Gamma, Faktor Kalibrasi, Ketidakpastian Bentangan, Calibration, Pocket Dosimeter, Gamma Survey Meter, Calibration Factor, Measurement Uncertainty |
| Subjects: | Q Science Q Science > QC Physics Q Science > QC Physics > QC271.8.C3 Calibration Q Science > QC Physics > QC795.5 Radioactivity and radioactive Instruments and apparatus (General) |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis |
| Depositing User: | Diana Nur Avian |
| Date Deposited: | 04 Aug 2026 08:34 |
| Last Modified: | 04 Aug 2026 08:34 |
| URI: | http://repository.its.ac.id/id/eprint/143658 |
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