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All Journal AdBispreneur Majalah Ilmiah Pengkajian Industri
Sutarjo -, Sutarjo
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Aerospace Engineering Chemical Engineering, Chemistry & Bioengineering Economics, Econometrics & Finance Engineering Industrial & Manufacturing Engineering Social Sciences Transportation

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STREET VENDORS EXTERNALITIES -, Sutarjo
AdBispreneur Vol 1, No 1 (2016): Adbispreneur
Publisher : Departemen Ilmu Administrasi Bisnis, Fakultas Ilmu Sosial dan Ilmu Politik, UNPAD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (114.14 KB) | DOI: 10.24198/adbispreneur.v1i1.9099

Abstract

There are externalities as a result of street vendors economic activities. The externalities may be negatives and may be positives.The method used to collect data through literature and the data collected is secondary data from reports and research publication. Negative externalities caused by the street vendors are accessibility of public spaces, garbage, open space inharmony, dirty and untidy, traffic congestion, pedestrian interference and the possibility of diseases due to lack of sanitation. Tragedy of the commons happened due to excessive uses of public facilities resulting in reduced or loss of its function. The Positive externalities are generate jobs, as a distributor, security, bring the servicecloser to the customers and means of recreation. In the newinstitutional economic point of view, the government needs to intervene as a governing body to avoid the tragedy of the commons over excessive use of public resources in the form of an open area which supposed to be able to be utilised by the society.
Serangan Korosi Sumuran pada Tube Heat Exchanger di Kilang Pengolahan Minyak Sunandrio, Hadi; -, Sutarjo
Majalah Ilmiah Pengkajian Industri Vol 8, No 3 (2014): MAJALAH ILMIAH PENGKAJIAN INDUSTRI
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (649.999 KB) | DOI: 10.29122/mipi.v8i3.3665

Abstract

Alat penukar panas (Heat Exchanger) adalah suatu alat yang berfungsi untuk menaikkan temperatur. Apabila salah satu komponen dari Heat Exchangertersebut mengalami kerusakan, maka temperatur yang diinginkan tidak akan tercapai. Salah satu dari tube heat exchanger yang ada di Kilang Pengolahan Minyak mengalami kerusakan berupa putus akibat terkorosi. Setelah dilakukan pemeriksaan dan pengujian yang meliputi : pemeriksaan visual, metalografi, uji kekerasan, analisa komposisi kimia, dan analisa EDAX. Maka diketahui bahwatube Heat Exchanger telah mengalami serangan korosi sumuran (pitting corrosion) pada permukaan dalam dan luar tube. Terjadinya serangan korosi sumuran, karena pada permukaan dalam dan luar tube terlapisi oleh deposit yang cukup tebal dan mengandung unsur-unsur Sulphur (S) dan Chlor (Cl) yang dapat memicu timbulnya serangan korosi sumuran (pitting corrosion), hingga tube mengalami penipisan di mana-mana dan putus.Kata kunci : Alat penukar panas, Tube, Endapan, Korosi sumuran, putus.AbstractHeat exchangers is a tool that serves to raise the temperature. If one component of the Heat Exchanger is damaged, then the desired temperature will not be reached. One of the tube heat exchanger that is in Oil Refinery suffered damage in the form of broken due to corroded. After examination and testing that includes visual inspection, metallography, hardness testing, chemical composition analysis, and analysis of EDAX. It is known that the tube Heat Exchanger has suffered attacks pitting corrosion on the surface of the inner and outer tube. Pitting corrosion attack, because the surface of inner and outer tube coated by a deposit that is thick and contains elements of Sulphur (S) and Chlor (Cl) which can lead to pitting corrosion attack, to experience thinning tube where everywhere and brokenKeyword : Heat exchanger, Tube, Deposit, Pitting corrosion, Broken.
Serangan Korosi Sumuran pada Tube Heat Exchanger di Kilang Pengolahan Minyak Sunandrio, Hadi; -, Sutarjo
Majalah Ilmiah Pengkajian Industri Vol. 8 No. 3 (2014): Majalah Ilmiah Pengkajian Industri
Publisher : Deputi TIRBR-BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (649.999 KB) | DOI: 10.29122/mipi.v8i3.3665

Abstract

Alat penukar panas (Heat Exchanger) adalah suatu alat yang berfungsi untuk menaikkan temperatur. Apabila salah satu komponen dari Heat Exchangertersebut mengalami kerusakan, maka temperatur yang diinginkan tidak akan tercapai. Salah satu dari tube heat exchanger yang ada di Kilang Pengolahan Minyak mengalami kerusakan berupa putus akibat terkorosi. Setelah dilakukan pemeriksaan dan pengujian yang meliputi : pemeriksaan visual, metalografi, uji kekerasan, analisa komposisi kimia, dan analisa EDAX. Maka diketahui bahwatube Heat Exchanger telah mengalami serangan korosi sumuran (pitting corrosion) pada permukaan dalam dan luar tube. Terjadinya serangan korosi sumuran, karena pada permukaan dalam dan luar tube terlapisi oleh deposit yang cukup tebal dan mengandung unsur-unsur Sulphur (S) dan Chlor (Cl) yang dapat memicu timbulnya serangan korosi sumuran (pitting corrosion), hingga tube mengalami penipisan di mana-mana dan putus.Kata kunci : Alat penukar panas, Tube, Endapan, Korosi sumuran, putus.AbstractHeat exchangers is a tool that serves to raise the temperature. If one component of the Heat Exchanger is damaged, then the desired temperature will not be reached. One of the tube heat exchanger that is in Oil Refinery suffered damage in the form of broken due to corroded. After examination and testing that includes visual inspection, metallography, hardness testing, chemical composition analysis, and analysis of EDAX. It is known that the tube Heat Exchanger has suffered attacks pitting corrosion on the surface of the inner and outer tube. Pitting corrosion attack, because the surface of inner and outer tube coated by a deposit that is thick and contains elements of Sulphur (S) and Chlor (Cl) which can lead to pitting corrosion attack, to experience thinning tube where everywhere and brokenKeyword : Heat exchanger, Tube, Deposit, Pitting corrosion, Broken.
Co-Authors hadi sunandrio