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All Journal Teknofisika Jurnal Sains & Teknologi Modifikasi Cuaca Computational and Experimental Research in Materials and Renewable Energy (CERiMRE)
Mondjo Mondjo, Mondjo
Jurusan Teknik Fisika, Fakultas Teknik, Universitas Gadjah Mada
Computer Science & IT Education Energy Engineering Materials Science & Nanotechnology Physics

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Program Komputer Berbasis Delphi untuk Analisis Perhitungan Persebaran Dosis Radiasi Pesawat Sinar-X dalam Bentuk Kurva Isodosis Adzdzantyawan, Anggrata; Mondjo, Mondjo; Waseso, Probo
Teknofisika Vol 3, No 1 (2014)
Publisher : Jurusan Teknik Fisika, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1079.608 KB)

Abstract

Pada instalasi radiasi seperti instalasi radiologi, aspek keselamatan pekerja radiasi harus diperhatikan. Setiap pekerja radiasi harus mengenali medan tempatnya melakukan pekerjaannya dengan tersedianya informasi yang jelas mengenai tingkat radiasi, terlebih radiasi sekunder. Bentuk informasi medan radiasi tersebut divisualisasikan dalam bentuk kurva isodosis. Analisis persebaran dan besarnya dosis radiasi sekunder di sekitar pesawat sinar-X dilakukan dengan adanya visualisasi informasi tersebut. Pembuatan program komputer sebagai alat bantu peraga bertujuan untuk mempermudah melakukan analisis kurva isodosis. Pada penelitian ini, dilakukan pengukuran laju dosis radiasi sekunder menggunakan phantom air sebagai media penghambur pada sudut hambur 90° dengan tabung pesawat sinar-X diarahkan ke bawah tegak lurus meja pasien pada 7 arah sudut di sekeliling phantom air, di setiap arahnya divariasikan 3 jarak titik pengambilan. Selanjutnya data yang sudah terkumpul akan diolah dengan menghitung laju dosis di setiap sudutnya, kemudian menghubungkan laju dosis yang sama antar sudut dan menghitung laju dosis pada titik-titik tertentu. Berdasarkan tahapan tersebut selanjutnya dibuat program komputer berbasis Delphi. Pengujian dilakukan dengan analisa data hasil perhitungan laju dosis radiasi menggunakan program dibandingkan dengan pengukuran sebenarnya. Hasil pengujian program tersebut didapat selisih hasil laju dosis menggunakan perhitungan program dengan pengukuran berkisar pada rentang 10,830-32,050% dan selisih rerata sebesar 17,334%.
PENGARUH FAKTOR IKLIM TERHADAP POLA SEBARAN INTEGRAL KONSENTRASI KONTAMINAN RADIOAKTIF TAHUNAN DARI CEROBONG REAKTOR KARTINI YOGYAKARTA KE UDARA LINGKUNGAN SEKITARNYA Mondjo, Mondjo; Sudibyakto, Sudibyakto
Jurnal Sains & Teknologi Modifikasi Cuaca Vol 1, No 2 (2000): December 2000
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (207.867 KB) | DOI: 10.29122/jstmc.v1i2.2131

Abstract

This research is to study the impact of climate factors and environmental risk due tooperation of The Nuclear Reactor of Kartini that is proportional to the annual integratedconcentration of the radioactive contaminant into the air of surrounding areas A research has been done to design a mathematical model to relate the annual integrated concentration of the radioactive contaminant with the radioactive contaminant released from the Reactor of Kartini (the rate the effluents are released, type of the radioactive contaminant, dimension of stack), and climatological factor (wind direction, wind speed, solar radiation percentage) . The result shown that the maximum of annual integrated concentration of the radioactive contaminant of Argon-41 had been on the decrease but variation of the annual climatological factor was not significant with the distribution of it. The map of the annual integrated concentration of Argon-41 shown up the maximum of 3 the annual integrated concentration of Argon-41 was 0,6 μ Ci/m . The area where had the 3 value of the annual integrated concentration of Argon-41 of 0,4 – 0,6 μ Ci/m (equal to the -5 3mean concentration of Argon-41 of 4,04 – 6,06 × 10 μ Ci/m ) for the direction of 60° onthe distance of 200 – 1075 m, the direction of 30° on the distance of 200 – 800 m, and the direction of 90° on the distance of 300 – 575 m. The contribution of contaminant released from the stack of the Reactor of Kartini was lower than the natural radioactivity so the operation of the Reactor of Kartini was not significant with the degree of theenvironmental radioactivity.
PENGARUH FAKTOR IKLIM TERHADAP POLA SEBARAN INTEGRAL KONSENTRASI KONTAMINAN RADIOAKTIF TAHUNAN DARI CEROBONG REAKTOR KARTINI YOGYAKARTA KE UDARA LINGKUNGAN SEKITARNYA Mondjo, Mondjo; Sudibyakto, Sudibyakto
Jurnal Sains & Teknologi Modifikasi Cuaca Vol 1, No 2 (2000): December 2000
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (207.867 KB) | DOI: 10.29122/jstmc.v1i2.2131

Abstract

This research is to study the impact of climate factors and environmental risk due tooperation of The Nuclear Reactor of Kartini that is proportional to the annual integratedconcentration of the radioactive contaminant into the air of surrounding areas A research has been done to design a mathematical model to relate the annual integrated concentration of the radioactive contaminant with the radioactive contaminant released from the Reactor of Kartini (the rate the effluents are released, type of the radioactive contaminant, dimension of stack), and climatological factor (wind direction, wind speed, solar radiation percentage) . The result shown that the maximum of annual integrated concentration of the radioactive contaminant of Argon-41 had been on the decrease but variation of the annual climatological factor was not significant with the distribution of it. The map of the annual integrated concentration of Argon-41 shown up the maximum of 3 the annual integrated concentration of Argon-41 was 0,6 ? Ci/m . The area where had the 3 value of the annual integrated concentration of Argon-41 of 0,4 ? 0,6 ? Ci/m (equal to the -5 3mean concentration of Argon-41 of 4,04 ? 6,06 × 10 ? Ci/m ) for the direction of 60° onthe distance of 200 ? 1075 m, the direction of 30° on the distance of 200 ? 800 m, and the direction of 90° on the distance of 300 ? 575 m. The contribution of contaminant released from the stack of the Reactor of Kartini was lower than the natural radioactivity so the operation of the Reactor of Kartini was not significant with the degree of theenvironmental radioactivity.
Design of Waste Management in Nuclear Medicine Isolation Room of Dr. Sardjito Central General Hospital Efendi, Ahmad Mudzakir; Mondjo, Mondjo; Purwanti, Eli
Computational And Experimental Research In Materials And Renewable Energy Vol 7 No 2 (2024): November
Publisher : Physics Department, Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/cerimre.v7i2.53191

Abstract

The purpose of isolation room is to prevent radioactive contamination from the patient's metabolic processes. Because of that the radiation dose around the room and working area need to be limited. So that the value of the dose limits are not exceeded, the work area could be divided according to Perka Bapeten number 17 of 2012 Article 35. The working area can be divided into two parts: control region and supervision region. According to Perka Bapeten number 4 of 2013 Dose Limit Value (DLV) received in the control region has the potential to exceed 3/10 radiation workers DLV and the dose received in the supervision region has the potential of less than 3/10 radiation workers DLV and exceed people DLV. The isolation room is belong in the control region. The liquid waste from the isolation room is accommodated in the multi tank to delay it before being released to wastewater treatment plant. The isolation room needs ventilation using filters to prevent contamination via air circulation. The position of the preparation and radiopharmaceutical room and the waste storage room which is in the control region must be adjacent to the isolation room.Keywords: Isolation Room, Radioactive, Control Region, Supervision Region, DLV.
Co-Authors Anggrata Adzdzantyawan, Anggrata Efendi, Ahmad Mudzakir Probo Waseso, Probo Purwanti, Eli Sudibyakto Sudibyakto