Publikasi Riset

Evaluasi Hasil Pengujian Keselamatan Kamera Radiografi Gamma Industri Jenis Portabel di Laboratorium PTKMR BATAN Tahun 2012-2013

B.Y. Eko Budi Jumpeno

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Detail
  • Jurnal    : Widyanuklida
  • ISSN    : 1410-5357
  • Tahun    : 2014
  • Volume  : 14
  • Halaman : 1-9
  • Link     : klik Disini
Abstrak

Pengujian tersebut mengacu pada SNI ISO 3999:2008 dan SNI-6650.2-2002. Pengujian keselamatan kamera radiografi gamma ini berkaitan dengan pelaksanaan Perka BAPETEN No. 7 Tahun 2009 Pasal 42, Ayat (1) butir b dan c. Pada kurun waktu tahun 2012-2013 Laboratorium PTKMR BATAN melakukan pengujian 23 kamera gamma beserta asesorisnya. Dari 23 kamera gamma yang diuji, hanya 8 kamera gamma yang mendapatkan uji kebocoran radiasi, uji kebocoran radioaktif, serta uji visual dan ketahanan proyeksi dan hanya 5 kamera gamma yang lolos uji. Mengingat dalam Perka BAPETEN No. 7 Tahun 2009 hanya mewajibkan pelaksanaan uji kebocoran radioaktif untuk memperoleh perpanjangan izin, pengguna kamera gamma tidak mengajukan jenis uji tersebut. Untuk menjamin adanya dasar hukum yang mendukung pelaksanaan pengujian kamera gamma radiografi sesuai standar nasional Indonesia , maka Perka BAPETEN No. 7 Tahun 2009 perlu direvisi.

Verifikasi Dosis H*(10) Pada Evaluasi Dosis Radiasi Lingkungan Menggunakan Dosimeter OSL

B.Y. Eko Budi Jumpeno, Egnes Ekaranti, Fendi Nugroho

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Detail
  • Jurnal    : Widyanuklida
  • ISSN    : 1410-5357
  • Tahun    : 2017
  • Volume  : 16
  • Halaman : 22-28
  • Link     : klik Disini
Abstrak

Telah dilakukan verifikasi dosis H*(10) pada evaluasi dosis radiasi lingkungan menggunakan dosimeter OSL tipe EX. Pertama, disiapkan dosimeter OSL tipe EX sebanyak 16 buah yang dibagi menjadi 4 grup yaitu Grup Kontrol, Grup 1, Grup 2 dan Grup 3 yang masing-masing grup terdapat 4 buah dosimeter. Kemudian, dosimeter OSL pada Grup 1, Grup 2, dan Grup 3 disinari dengan radiasi dari sumber Cs-137 dengan dosis HP(10) masing-masing 1 mSv, 2,5 mSv, dan 5 mSv. Hasil analisis menunjukkan bahwa rasio nilai measured dose terhadap true dose adalah 0,87 - 0,95 (deviasi measured dose terhadap true dose berkisar antara 7 - 13%) pada penyinaran 1 mSv, 1,03 - 1,07 (deviasi berkisar 3 - 7 %) pada penyinaran 2,5 mSv, dan 1,07 - 1,13 (deviasi sekitar 7 - 13%) pada penyinaran 5 mSv. Berdasarkan hasil analisis dapat disimpulkan bahwa nilai deviasi measured dose terhadap true dose ≤ 13% sehingga pengukuran dosis radiasi lingkungan/daerah kerja menggunakan dosimeter OSL tipe EX di Subbidang KKPR PTKMR BATAN dapat dipercaya. Namun demikian perlu dilakukan kajian lebih lanjut terhadap tingkat kepercayaan hasil evaluasi dosis H*(10) dengan dosis kurang dari 1 mSv.

Respons Dosis Hp(10) Pada Uji Banding TLD dan OSLD Komersial Terhadap Gamma dan Sinar-X

B.Y. E. B. Jumpeno, Irma Dwi Rahayu dan E.A. Ardyanti

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Detail
  • Jurnal    : Prosiding PPIS 2021
  • ISSN    : 0853-9677
  • Tahun    : 2021
  • Volume  : -
  • Halaman : 11-16
  • Link     : klik Disini
Abstrak

Pemegang izin pemanfaatan sumber radiasi seharusnya bertanggung jawab terhadap penyusunan pengaturan penilaian paparan kerja berdasarkan pemantauan personel yang tepat. Layanan pemantauan dosis personel menggunakan dosimeter pasif yaitu thermoluminesence dosimeter (TLD) dan optically stimulated luminescence dosimeter (OSLD) merupakan salah satu sarana untuk memenuhi persyaratan tersebut. Studi ini mendeskripsikan respon dosis Hp(10) terhadap radiasi gamma 137Cs dan sinar-X 80 kV menggunakan TLD-900, TLD-700 dan OSLD serta kriteria keberterimaannya berdasarkan General Safety Guide No. GSG-7. Dalam penelitian ini disiapkan 24 dosimeter untuk setiap jenis TLD-900, TLD-700 dan OSLD. Masing-masing jenis dosimeter dibagi dalam 6 kelompok yaitu Gamma 1, Gamma 2, Gamma Control, X-ray 1, X-ray 2, dan X-ray Control yang berisi 4 buah dosimeter untuk se tiap kelompok. Semua dosimeter yang sudah di-annealing, dikemas, dan diberi label selanjutnya dikirim ke Laboratorium Dosimeter Sekunder Standar (SSDL) untuk diiradiasi gamma 137Cs dan sinar-X 80 kV dengan mengikuti protokol yang berlaku di SSDL. Setelah mendapatkan penyinaran, dosimeter TL dibaca menggunakan TLD reader dan dosimeter OSL dibaca menggunakan OSLD microStar Reader. Kemudian respon dosis Hp(10) dianalisis. Hasil studi menunjukan bahwa TLD-900 paling baik digunakan untuk pemantauan dosis personel Hp(10) pada radiasi gamma 137Cs diikuti OSLD dan TLD-700. Sedangkan pemantauan dosis personel pada medan radiasi sinar-X 80 kV paling baik menggunakan TLD-700 diikuti OSLD dan TLD-900. Dalam uji banding ini, rasio Hp(10)Meas terhadap Hp(10)Exp pada radiasi gamma 137Cs dan sinar-X 80 kV untuk semua jenis dosimeter masuk kriteria keberterimaan kurva terompet.

Damping Concentration Effect Simulation on the Particulate PM10 Average Dynamic Dose Rate per Year in X Region at Serpong Residency

Icuk Setiyawati, Abdurrouf, Eko Pujadi, P.A Saraswati

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Detail
  • Jurnal    : Proceedings of The lnternational Conference on Basic Science
  • ISSN    : 978-602-97628-5-3
  • Tahun    : 2011
  • Volume  : -
  • Halaman : 238-239
  • Link     : klik Disini
Abstrak

This research aims to predict the damping concentration effect on the dynamic of annually (Nerage dose of Particulate PMl0 in a specific region. In this research, the damping concentrqtion is predicted numerically by simulating Particulate PM10 overage dynamic dose rate in the air. Dynamic dose rate is calculated by using numeric integration metlpd which is trapezoidol method of concentration rate in a defined period of time. Afier calculation dynonic dose rate before and after damping concentration effort per year is obtained. From the colculatioq it is concluded that before the damping concentration effect applied, dynamic dose rate in the air increases along with time increment. If damping concentration effort of l0% is applied per year, the dose rate is suppressed four times smaller than before. By applytng concentration damping by 50%, one canreduce the average dose rate to constant.

Penentuan Sifat-Sifat Fisis Partikel dari Beberapa Jenis Bedak Bayi dan Hubungannya dengan Proses Inhalasi

Sri Handani, Sri Mulyadi, Ayuningtyas dan Eko Pudjadi

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Detail
  • Jurnal    : Jurnal Ilmu Fisika (JIF)
  • ISSN    : 1979-4657
  • Tahun    : 2012
  • Volume  : Vol. 4 No. 2
  • Halaman : 46-52
  • Link     : klik Disini
Abstrak

Telah dilakukan penelitian untuk mengetahui sifat-sifat fisis partikel dari beberapa jenis bedak bayi dan hubungannya dengan proses inhalasi. Parameter yang ditentukan antara lain kandungan unsur dalam bedak bayi yang dibandingkan dengan standar kualitas udara sekitar yang ditetapkan EPA, konsentrasi partikel bedak bayi dan proses inhalasi bedak bayi. Penelitian ini menggunakan cascade impactor, XRF portable XMET-5100 dan software biokmod. Hasil penelitian menunjukkan bahwa kandungan unsur yang terdapat pada 7 sampel jenis bedak bayi ini Fe, Sn, Zn, Ca, W, Zr, Sb, Ti, Mn, Ni, Sr, Cr dan Cu dan beberapa bedak bayi mengandung unsur Pb, Co, Cd, dan Ta yang memiliki resiko terhadap kesehatan. Semua jenis sampel bedak bayi melebihi standar yang telah ditetapkan EPA yaitu sebesar 150 µg/m3 untuk PM10 dan 35 µg/m3 untuk PM2,5. Dengan menggunakan program biokmod proses inhalasi bedak bayi diperoleh pengendapannya lebih banyak pada ET2 yaitu bagian pharynx dan larynx, dan akan lebih banyak mengendap pada bayi yang berumur 3 bulan.

Kualitas Mikrobiologis Udara di Salah Satu Pusat Perbelanjaan di Jakarta Selatan

Eko Pudjadi, Rima Suciyani, Innes Gania Sahira, Megga Ratnasari Pikoli

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Detail
  • Jurnal    : Al-Kauniyah Jurnal Biologi
  • ISSN    : 1978-3736
  • Tahun    : 2015
  • Volume  : Vol. 8 No. 2
  • Halaman : -
  • Link     : klik Disini
Abstrak

The airborne bacteria and fungi in parking building, playground and food court in Blok M Square, South Jakarta, were assessed in order to investigate air quality in one of the shopping center in Jakarta. The air sample was passed through plate count agar and potato dextrose agar using a single-stage multi-orifice Sampler SKC Biostage Standard. Results showed that average microbial concen-trations were 200.17, 101.17, 55, 33 CFU bacteria per m3, and 109.54, 37.69, 27.09 CFU fungi per m3 of air volume in the parking building, the children playground and the food court, respectively. The most dominating bacteria had characteristicsresembleairborne Bacillus subtilis, while the most dominating fungi wereidentified as Cryptococcus sp., Aspergillus spp., Penicillium sp. and Candida sp. The microbial concentrations were different significantly (α=0,05) inall the three areas. In addition, there were strong relationship and significant influence between the concentrations of bacteria and fungi to temperature, humidity and light intensity in in all the three areas based on Pearson correlation analysis. For today, there is no air quality standard specifically for shopping center, so the data were compared tocommon standards for indoor air quality. The concentration of bacteria and fungi met the standard regulated by TheMinistry of Health Republic of IndonesiaNo.1405/MENKES/SK/ XI/2002 about Environmental Requirements for Office and Industrial., i.e <700 CFU/m3, and acceptable according to World Health Organization (WHO) with 500 CFU/m3 as a normal condition. In any case, it is advisable to be aware ofthe spread of airborne bacteria and fungi in shopping centersthat are potentially pathogenic.

In-Vitro Physicochemical Properties and Antibacterial Activity of Ciprofloxacincarrageenan Inhalable Microspheres

D.M Hariyadi, E. Hendradi, M. Rahmadi, N.S. Bontong, E. Pudjadi dan N. Islam

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Detail
  • Jurnal    : Rasayan Journal of Chemistry
  • ISSN    : 0974-1496
  • Tahun    : 2022
  • Volume  : Vol. 15 No. 1
  • Halaman : 132-142
  • Link     : klik Disini
Abstrak

This study's aim is to characterize aerosolization properties of ciprofloxacin loaded kappa-carrageenan microspheres for pulmonary delivery. Ciprofloxacin-carrageenan microspheres by ionotropic gelation were prepared and characterized for moisture content, yield, drug loading, efficiency, aerosolization properties, activity and stability. Characteristics showed spherical microspheres, smooth and size below 2µm, moisture content of <4%, yield of 46-58%, encapsulation efficiency of 40-94% and loadings of 25-37%. Optimum microspheres containing 1%w/v carrageenan and 0.6% w/v KCl, showed 58% yield, 38% loading 94.5% efficiency with slowest release. The fine particle fraction was 30%. The increased concentration of polymers from 0.5% to 1% and crosslinker from 0.2% to 0.6% significantly increased moisture content, yield, drug loading, efficiency, and aerosolization. Ciprofloxacincarrageenan microspheres were found to be stable up to 30 days storage and have high activity against Staphylococcus aureus and Pseudomonas aeruginosa at a low dose. Inhaled ciprofloxacin-carrageenan microspheres may be useful against respiratory tract infection.

Estimation of alpha radioactivity concentration in the respiratory tract in normal operating condition in Experimental Fuel Element Installation (EFEI)

Budi Prayitno, Suliyanto, Eko Pudjadi

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Detail
  • Jurnal    : Prosiding Seminar Nasional SDM Teknologi Nuklir
  • ISSN    : 1978-0176
  • Tahun    : 2012
  • Volume  : -
  • Halaman : 106-114
  • Link     : klik Disini
Abstrak

Perhitungan perkiraan konsentrasi radioaktivitas alpha di dalam saluran pernapasan pada kondisi operasi normal Instalasi Elemen Bakar Eksperimental, telah dilakukan. Perhitungan ini bertujuan untuk melihat seberapa besar konsentrasi radionuklida gross alpha yang terhirup oleh pekerja, dibandingkan dengan batasan yang direkomendasikan oleh IAEA (International Atomic Energy Agency). Metode yang digunakan menggunakan pendekatan model biokinetika sistem pernapasan manusia sesuai ICRP (International Commission on Radiological Protection) Publikasi 66/1994, yang diekstrapolasi dari pengukuran konsentrasi aktivitas radionuklida pemancar alpha di udara. Pengukuran radionuklida pemancar alpha, jumlah dan diameter partikulat di udara dilakukan di ruang HR-05. Hasil pengukuran radioaktivitas alpha di udara tertinggi sebesar (3,053 ± 0,095) Bq/m3 di ruang HR-05, namun masih di bawah batasan yang diperbolehkan (20 Bq/m3). Hasil perkiraan konsentrasi radioaktivitas alpha untuk organ saluran pernapasan tertinggi terjadi pada bulan Mei 2011 pada Extrathoracic bagian atas, Extrathoracic bagian bawah, Bronchi, Bronchioles dan Alveolar-interstitial, berturut turut sebesar: 0,441 Bq/m3; 0,562 Bq/m3; 0,038 Bq/m3; 0,058 Bq/m3 dan 0,340 Bq/m3. Hasil perhitungan selanjutnya, menunjukkan bahwa, aktivitas radionuklida pemancar alpha di paru-paru untuk pekerja di ruang HR-05 sebesar 0,745 Bq/menit per-gram paru-paru. Mengingat adanya akumulasi partikel alpha dalam saluran pernapasan, maka petugas proteksi radiasi (PPR) dan pekerja radiasi perlu memperhatikan prinsip ALARA (As Low As Reasonably Achievable).

Analisis Unsur Abu Terbang Dari PLTU Batubara Dengan Metode Analisis Aktivasi Neutron

Muji Wiyono, Dadong Iskandar, Eko Pudjadi dan Wahyudi

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Detail
  • Jurnal    : Prosiding Seminar Nasional Keselamatan, Kesehatan dan Lingkungan
  • ISSN    : 1412-2499
  • Tahun    : 2012
  • Volume  : -
  • Halaman : 114-125
  • Link     : klik Disini
Abstrak

Telah dilakukan penentuan kandungan unsur pada cuplikan abu terbang dari salah satu PLTU batubara di Pulau Jawa dengan metode analisis aktivasi neutron (AAN). Abu terbang setelah keluar dari Electrostatic Precipitator (EP) dicuplik menggunakan probe isokinetik. Cuplikan yang sudah terkumpul dikocok selama dua menit dan dikeringkan dalam oven pada suhu105ºC selama dua jam. Cuplikan abu terbang dan Standard Reference Material (SRM) NIST 1633b Coal Fly Ash masing-masing dimasukkan dalam vial polietelin ukuran 0,273 ml dengan berat sekitar : 10-15 mg, 15-20 mg dan 25-30 mg. Vial abu terbang dan vial SRM kemudian dimasukkan dalam tiga kapsul polietelin dan diberi kode. Masing-masing kapsul kemudian diiradiasi pada Rabbit System Reaktor Serbaguna Siwabessy pada Daya 15 MW selama 1 menit (iradiasi pendek), 15 menit (iradiasi menengah), dan 3 jam (iradiasi panjang). Sampel hasil iradiasi selanjutnya dicacah menggunakan Spektrometer Gamma dengan detektor HPGe buatan Canberra GC-2020 dan dianalisis menggunakan perangkat lunak Genie 2000 dan Excel 2007. Hasil analisis menunjukkan bahwa cuplikan abu terbang dari PLTU batubara mengandung unsur mayor yaitu : Al, Mg, Ca, Mn, Ti, K, Na, Ba, Fe, Ca dan Zn dan unsur minor yaitu : V, Cr, As, Sc, Se, Sr dan Co.

Kandungan Unsur Pada Berbagai Bahan Pangan Dari Daerah Radiasi Alam Latar Tinggi Kabupaten Mamuju - Sulawesi Barat

Muji Wiyono, Dadong Iskandar, Eko Pudjadi dan Kusdiana

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Detail
  • Jurnal    : Proceeding of the Seminar Nasional Teknik Aplikasi Nuklir
  • ISSN    : -
  • Tahun    : 2012
  • Volume  : -
  • Halaman : 111-118
  • Link     : klik Disini
Abstrak

Telah dilakukan penentuan kandungan unsur pada berbagai bahan pangan (beras, bayam, singkong, kangkung, labu, pepaya, pisang dan ubi) yang berasal dari daerah radiasi alam latar tinggi di Desa Boteng, Kecamatan Simboro, Kabupaten Mamuju–Sulawesi Barat menggunakan metode Analisis Aktivasi Neutron (AAN). Berbagai bahan pangan dibersihkan, dikeringkan, digerus dan diayak dengan ukuran 200 mesh. Cuplikan dan Standard Reference Material 1568a (SRM) Rice Flour, masing-masing dipreparasi dalam vial polietelin 0,273 ml dengan variasi berat: 39,9-40,2 mg, 49,9-50,2 mg dan 99,9-100,2 mg dan diberi kode. Selanjutnya vial polietilen tersebut disusun dan diiradiasi selama 3 menit (pendek), 20 menit (menengah) dan 3 jam (panjang) di Reaktor Serbaguna Siwabessy pada 15 MW. Cuplikan dan SRM hasil iradiasi pendek langsung dicacah menggunakan Spektrometer Gamma dengan detektor HPGe buatan Canberra GC-2020 selama 2 menit, sedangkan untuk iradiasi menengah dan panjang setelah ditunda selama 2 hari dan 2 minggu, dicacah berturut-turut selama 30 menit dan 1 jam. Diperoleh variasi kandungan unsur pada berbagai bahan pangan yaitu unsur K : (1,24 - 299.418,67) mg/kg, unsur Fe : (ttd : tidak terdeteksi – 40.038,12) mg/kg, unsur Na : (ttd – 12.918,33) mg/kg, unsur Mg : (19,44 – 9.346,82) mg/kg, unsur I : (ttd – 3.665,23) mg/kg, unsur Cl : (0,007 – 1.607,06) mg/kg, unsur Ca : (ttd – 1.387,59) mg/kg, unsur Br : (1,08 – 1.201,16) mg/kg, unsur Rb : (ttd – 912,92) mg/kg, unsur Zn : (ttd – 252,89) mg/kg, unsur Mn : (0,019– 90,12) mg/kg, unsur Al : (ttd – 47,56) mg/kg dan unsur Co : (0,009 – 40,81) mg/kg. Data yang diperoleh tersebut dijadikan sebagai data dasar (baseline) kandungan unsur-unsur pada daerah radiasi alam latar tinggi.

A Survey of Natural Occurring Radionuclides and Particle Concentrations from Erupting Mount Bromo in East Java, Indonesia

Johan A.E. Noor dan Eko Pujadi

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Detail
  • Jurnal    : International Journal of Basic & Applied Sciences IJBAS-IJENS
  • ISSN    : 2077-1223
  • Tahun    : 2012
  • Volume  : Vol. 12 No. 3
  • Halaman : 25-28
  • Link     : klik Disini
Abstrak

Mount Bromo in East Java, Indonesia is erupting from 23 November 2010 and ejects ash with a maximum height of 1,500 meter and throws lava as high as 50-300 meters from the crater. In any eruptions the presence of natural radioelements is evident with high concern to affect the human health living near the volcano. This survey was aimed to determine the levels of radiation from the volcanic ash. We measured radiation dose rate, soil gamma-ray concentration, soil heavy metals contents and dust/ash concentration at four spots along the volcano’s caldera located at the village of Cemorolawang, District of Probolinggo just 2 km east of the crater. It was revealed that the radiation exposure rate was 14-16 μR/hr and the concentrations of K-40, Ra-226 and Th-232 were 760.8±84.6 Bq/kg, 31.9±4.2 Bq/kg and 57.0±6.8 Bq/kg, respectively. We also found that the concentration of the particulate (PM10) was 52.9±5.1 μg/m3.

Mapping of Environmental Gamma Radiation Dose Rate in West Sumatera Province

Kusdiana, Asep Setiawan, Eko Pudjadi and Syarbaini

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Detail
  • Jurnal    : Proceeding of International Conference on the Sources, Effects and Risks of lonizing Radiation
  • ISSN    : 978-602-700-92-0-2
  • Tahun    : 2014
  • Volume  : -
  • Halaman : 211-214
  • Link     : klik Disini
Abstrak

Mopping of environmental garnrna radiation in the province of West Sumatcra bas been done, This activity is part of mapping the environmental radiation in lodonesia in order to complet the baseline of Indonesia's environmental radiation data. Measurements were carried out by using a portable gamma spectrometer Exploranium GR-130, *nd sampling area was divided into the 40 km x 40 km sreas using GPS positioning. Envircnmental gamma radiotion dose rate in the region of \ilest Sumatera was varied frorn 35.fi1110,48 nSv/h to 103t23 nSv& with an ayerage of 60*13 nSvih. Environmental gamma radiation lcvels in the region of West Sumatera were relatively equal to tht average level of gamma radiation in Indonesia, but it was slightly higher compared to the gamma radiation mea$urements obtained in most areas of Java, most of Sumatera, Kalimantan, Bali and Nusa Tenggara islands.

Comparison of EPA 900.0 with SNI ISO 969622009 and SNI ISO 9697 22009 Methods in the Determination of Total Alpha and Beta Radioactivities in Water

Asep Setiawan and Eko Pudjacli

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Detail
  • Jurnal    : SERIR International Conference
  • ISSN    : 978-602-70092-0-2
  • Tahun    : 2014
  • Volume  : -
  • Halaman : 179-184
  • Link     : klik Disini
Abstrak

Measurement of gross alpha and gross beta is a simple method used for the deternrination of prelimininary test of alpha and beta radioactivities in water for public health and nuclear emergencies purposes. Measurement of gross alpha and beta can be conducted by using EPA 900.0 metthod and SNI IS0 9696: 2009 / SNI ISO 9697: 2009 and the purpose ol'this rescarch was to compare both methods. After preparation of the samples, lbr EPA 900.0 method the obtained sample with maximum total dissolved solid (TDS) of 500 mg/L and maximum measureme of residues of 0.100 g for alpha and 0.200 for beta. For method of SNI ISO 9696:2009 and SNI ISO 9697:2009 the obtained sample with measurement residue betrveen 0.1734 g and 1,0000 g or TDS bctween 65.41 mglL and 350.4,1 mg/L lbr IL volume of water sample. EPA 900.0 method gave the recovcry of 59.31 7u for alpha counting (2{rAmstandurd),92.90 oA lbr beta counting 1"0Sr/e0Y standard), and with mix standard lzarAnr+e0sr/e0Y1 it rvere 41.87 (% for alpha counting and 92.26 7o for beta counting. Whereas SNt lS0 9696:2009 and SNI ISO 9697:2009 methotls gave the recovery of 10.22 7o lbr alpha counting (2arA m standar d), 72.46 "h for beta counting 1e0sr/e0Y standard), and rvith nrix standard ('arAm+e0Sr/e('Y) it rvere 10.94 " lbr alpha counting and 81,78 7o for beta counting. Based on timcs recluired to analysis, EPA 900.0 method needed + 6 h and SNI ISO 9696:2009 and SNI IS0 9697:2009 metthods needed 4 t h. Based on materials and tools, EPA method was simpler and for overall EPA 900.0 method was more effective and efficient.

Analysis of the TENORM Radiation Safety on Several Offshore of Oil and Gas Industries in Java Island

Muji Wivono, Dadong Iskandar, Eko Pudjadi and Wahyudi

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Detail
  • Jurnal    : SERIR International Conference
  • ISSN    : 978-602-97628-5-3
  • Tahun    : 2014
  • Volume  : -
  • Halaman : 179-184
  • Link     : klik Disini
Abstrak

Analysis of TliN()RM radiation saletv on several oll.shorc of thrcc oil and gas industries (A, B and C) in Jirva lsl:rnd has been carried out, An.rlysis included r:rdiation exposurc ratc, surfacc tontanrination, the kind and level ol conccntration ol'radionuclidcs in TENORN'I. Ratliation cxposurc tvas measurcd by using Ludlum l9 surveymeter und surface contaminution rvrs nreirsurcd by using the Mini Monitor Series 900 at t5 rnm distancc from the surfacc of TENORM. While the kind and levcl of ratlionuclitles in TENORIVI concen(ralion rrcre dctc,rmined bv collecting the I'ENORIVI sanrplcs that were tnensured by using thc ORTEC's C;EM-60HPCie Camma Spectrometer. The resull of rrrdiation exl)osurc rate in oil antt gas intlustries A, Ii and C rvas ranged fronr not detected to 38.0 + 2.8 pR/h,42.5 + 4.9 pR/lt andll5.0 + 7.1 pRih, respectively. The surlirce corrtirrnin'ation in oil and gas industries A, B anrl C rvas rangert ironr not detectc(l tol.litl * 0.30 Bq/cnr2, 1.3 + 0.09 Bt;/crn: anrl 0.74 + 0.05 Bq/cmz, .rcsficctivclv. While the kind and level of radionuclidc concentrations rvcrc ranged lionr 0.14 + 0,02 B<;/kg to 18,450 i 1,766 Bq/kg lbr'!'t2'Ih radionuclirle,0.l2 + 0.tll Bq/hg to 18,291 + l,73tt Bq/kg for 22E'l h radionuclide, 0.06 + 0.01 Bq/kg to 9,507 + 894 Bq/kg fbr 220lla radionuclidc and 0.09 +0.01 Bq/kg to 1.545 + 2ltl Bq/kg lbr arrK ratliortucli

Radon and Thoron Exhalation Rates from Surface Soil of Bangka - Belitung Islands, Indonesia

Syarbaini and E. Pudjadi

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Detail
  • Jurnal    : Indonesian Journal on Geoscience (IJOG)
  • ISSN    : 2355-9314
  • Tahun    : 2015
  • Volume  : Vol.2 No. 1
  • Halaman : 35-42
  • Link     : klik Disini
Abstrak

Radon and thoron exhalation rate from soil is one of the most important factors that can influence the radioactivity level in the environment. Radon and thoron gases are produced by the decay of the radioactive elements those are radium and thorium in the soil, where its concentration depends on the soil conditions and the local geological background. In this paper, the results of radon and thoron exhalation rate measurements from surface soil of Bangka Belitung Islands at thirty six measurement sites are presented. Exhalation rates of radon and thoron were measured by using an accumulation chamber equipped with a solid-state alpha particle detector. Furthermore, the correlations between radon and thoron exhalation rates with their parent nuclide (226Ra and 232Th) concentrations in collected soil samples from the same locations were also evaluated. The result of the measurement shows that mostly the distribution of radon and thoron is similar to 226Ra and 232Th, eventhough it was not a good correlation between radon and thoron exhalation rate with their parent activity concentrations (226Ra and 232Th) due to the environmental factors that can influence the radon and thoron mobilities in the soil. In comparison to a world average, Bangka Belitung Islands have the 222Rn and 220Rn exhalation rates higher than the world average value for the regions with normal background radiation.

Assessment of natural radioactivity levels in soil sample from Botteng Utara Village, Mamuju Regency Indonesia

Nurokhim, Kusdiana dan Eko Pudjadi

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Detail
  • Jurnal    : Journal of Physics Conference Series
  • ISSN    : -
  • Tahun    : 2020
  • Volume  : 1436
  • Halaman : -
  • Link     : klik Disini
Abstrak

High background radiation areas usually are correlated to the high concentration of primordial radionuclides activity from Uranium/Thorium series and 40K. This paper reported the natural radioactivity level in soil sample was taken from Botteng Utara village area. The activity of primordial radionuclide such as 226Ra, 232Th and 40K were investigated from the soil by gamma spectrometry. In order to evaluate the radioactivity levels of the area, Radium equivalent activity (Raeq), the absorb dose rate (D), the annual effective dose rate (E), the external hazard index (Hex), and internal hazard index (Hin) were calculated and compared with the internationally approved value. The concentration of 226Ra, 232Th and 40K measured by gamma spectrometry are lies in the range 268.90 to 2921.17, 993.07 to 3153.81, and 115.72 to 438.26 Bq.kg-1respectively. The average and maximum annual effective dose received by Botteng Utara resident from terrestrial gamma rays are 10.40 and 18.62 mSv y-1, which is the maximum received by resident of Tande-Tande hamlets. This present work clarify that Botteng Utara isan area with high background radiation exposure from primordial radionuclides activity.

Survey of Prospective Locations for Radionuclide Monitoring Stations in Indonesia: a Preliminary Site Assessment

Susilo Widodo, Wahyudi, Muji Wiyono, Eko Pudjadi, Dadong Iskandar, Syarbaini

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Detail
  • Jurnal    : AIP Conference Proceedings
  • ISSN    : -
  • Tahun    : 2022
  • Volume  : AIP Conference Proceeding
  • Halaman : -
  • Link     : klik Disini
Abstrak

Radionuclide monitoring systems with adequate sensitivity are urgently needed to be developed in Indonesia for the following reasons. First, the system can be part of the national infrastructure required for the development of nuclear power plants (NPPs) and second, the system is required for anticipating the nuclear emergencies that may occur in neighboring countries. The system may be functioned also as part of CTBTO’s global monitoring system. For developing a stationed monitoring system, site surveys need to be undertaken for selecting appropriate locations for installing air sampling units that shall be capable to sampling radionuclides released by NPPs operated in Asia including in the islands of Bangka, Belitung, Kalimantan and Java. This paper reports a preliminary site assessment of several locations in the cities of Padang, Medan, Pangkalpinang, Pontianak and Manado. The sites for the candidate of station were chosen from a number of facilities owned by BMKG. The survey was conducted by observing the parameters set by the CTBTO for the global monitoring system including level of background radiation dose rate, meteorological data, geographical and topographical conditions, and the availability of supporting facilities and infrastructure. The survey results show that among eight surveyed locations within five cities, the BMKG station at Supadio Pontianak airport is the most attractive candidate for the first installation of a radionuclide sampling station. These results have not considered the possibility of building NPPs in eastern part of Indonesia such as Lombok Island.