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All Journal Journal of Engineering and Management in Industrial System International Journal of Mechanical Engineering Technologies and Applications (MECHTA) TECHNOLOGIC
Hasnan, Ahmad
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Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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STRESS ANALYSIS EVALUATION AND PIPE SUPPORT TYPE ON HIGH-PRESSURE AND TEMPERATURE STEAM PIPE Aswin, Aswin; Hasnan, Ahmad
International Journal of Mechanical Engineering Technologies and Applications Vol. 4 No. 1 (2023)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2023.004.01.4

Abstract

The design and analysis of piping systems are critical in the power and process industries. The steam pipe is one of the main requirements for the plant to be installed. High-pressure and high-temperature steam pipes in the piping system are critical lines that need to be subjected to stress analysis. This study aims to evaluate the stress and the effect of using pipe supports on the stress in the piping system. Stress analysis is needed to ensure that the piping system that is designed is safe and does not exceed the allowable stress under operating conditions. Data analysis used ASTM A335-P11 as a pipe material with a design pressure of 65 bars and a design temperature of 480 °C. Stress analysis was carried out using CAESAR II software, which refers to ASME B31.3 process piping standards and codes. The findings revealed that the type of support chosen, such as the gap and distance of pipe support, has a significant impact on the stress value in the piping system. The results of the analysis are carried out several times to get the stress value so that it does not exceed the allowable stress. The greatest stress value occurs at the expansion load condition in the steam pipe system design. The chosen piping system design has a ratio of 93.6%, which is located at node 220 with a stress value of 35889.1 psi and an allowable stress of 38327.2 psi. Because the stress value that occurs is below the allowable stress, the steam pipe system is safe to be installed and operated.
PERHITUNGAN PEMAKAIAN KACA FRESNEL SEBAGAI SOLAR THERMAL CONCENTRATION TECHNOLOGY UNTUK SISTEM PENDINGIN / PEMANAS PADA INJECTION MOLD Kaswadi, Agung; Hasnan, Ahmad
Technologic Vol 2 No 2 (2011): Technologic
Publisher : LPPM Politeknik Astra

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Abstract

Di Indonesia, konsumsi energi terbesar adalah industri yang mencapai 40%, secara langsung industri telah menyumbang konsumsi karbon terbesar dari sektor energi, salah satu industri yang berkembang pesat di Indonesia adalah industry plastik, karena tidak dapat dipungkiri berbagai jenis komponen mobil dan elektronik terbuat dari plastik, pada proses pembuatan plastik menggunakan injection mold proses cooling merupakan proses yang memakan 60 % persen dari total proses, suhu air yang digunakan berkisar antara 25-80 C, tergantung dari jenis material, untuk mengurangi konsumsi energi pemanasan air pada proses cooling, pemanfaatan energi terbarukan perlu di integrasikan di industri, salah satunya dengan cara memanfaatkan panas matahari lebih jauh paper ini memberikan perhitungan detail, untuk wilayah Jakarta dan sekitarnya dibutuhkan panjang kaca Fresnel 22m, dengan jumlah 30 lembar, untuk mendapatkan suhu air lebih dari 80 0C secara perhitungan.
METODE RUNNER OFFSET SEBAGAI PENENTU KESEIMBANGAN PROSES FILLING PADA PRODUK BERBENTUK BULAT Hasnan, Ahmad; Kaswadi, Agung; Hartono, Budi
Technologic Vol 2 No 2 (2011): Technologic
Publisher : LPPM Politeknik Astra

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Abstract

Keseimbangan proses pengisian pada plastic injection mold sangat penting dilakukan, ketidak seimbangan proses filling dapat menyebabkan terjadinya shot mold, perbedaan shrinkage, perbedaan dimensi akhir dan cacat part lainya, part berbentuk bulat seperti roda gigi, bushing, pada umumnya memiliki gate lebih dari satu, sehingga dibutuhkan keseimbangan proses filling, penelitian ini meneliti proses filling untuk part berbentuk lingkaran yang terdiri dari tiga gate, sebagai pembanding dilakukan terhadap part yang diisi pada bagian tengahnya, hasilnya pada benda berbentuk lingkaran nilai offset yang paling sesuai untuk keseimbangan adalah 10 – 15 %. Offset sebanyak 5 % tidak berpengaruh besar terhadap keseimbangan filling, sedangkan offset 20 % menggeser jauh keseimbangan proses filling.
STRESS ANALYSIS EVALUATION AND PIPE SUPPORT TYPE ON HIGH-PRESSURE AND TEMPERATURE STEAM PIPE Aswin, Aswin; Hasnan, Ahmad
International Journal of Mechanical Engineering Technologies and Applications Vol. 4 No. 1 (2023)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2023.004.01.4

Abstract

The design and analysis of piping systems are critical in the power and process industries. The steam pipe is one of the main requirements for the plant to be installed. High-pressure and high-temperature steam pipes in the piping system are critical lines that need to be subjected to stress analysis. This study aims to evaluate the stress and the effect of using pipe supports on the stress in the piping system. Stress analysis is needed to ensure that the piping system that is designed is safe and does not exceed the allowable stress under operating conditions. Data analysis used ASTM A335-P11 as a pipe material with a design pressure of 65 bars and a design temperature of 480 °C. Stress analysis was carried out using CAESAR II software, which refers to ASME B31.3 process piping standards and codes. The findings revealed that the type of support chosen, such as the gap and distance of pipe support, has a significant impact on the stress value in the piping system. The results of the analysis are carried out several times to get the stress value so that it does not exceed the allowable stress. The greatest stress value occurs at the expansion load condition in the steam pipe system design. The chosen piping system design has a ratio of 93.6%, which is located at node 220 with a stress value of 35889.1 psi and an allowable stress of 38327.2 psi. Because the stress value that occurs is below the allowable stress, the steam pipe system is safe to be installed and operated.
ASSESSING CONTRIBUTORY FACTORS IN POTENTIAL HAZARD NATURAL GAS PIPELINE FAILURE Hasnan, Ahmad; Darmawan, Zefry; Iskandar, Ade; Aswin, Aswin; Septian, Diar Azzis
JEMIS (Journal of Engineering & Management in Industrial System) Vol. 11 No. 1 (2023)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jemis.2023.011.01.3

Abstract

Increased energy demand in Indonesia is accompanied by increasing demand for natural gas, where in the next 50 years natural gas is predicted to be the number one energy source in Indonesia, pipeline is the cheapest way to distribute natural gas, in this way, length of pipeline infrastructure will increase year by year. it is still very much needed by both the household, industry, and power plants. The longer the pipeline, the risk of pipeline failure also increases, it is necessary to understand what factors have the most influence on pipeline failure, the method used is to create a factor matrix from a modified Muhlbauer, MICMAC is used to test the strength of the relationship between significant factors causing the potential hazard of pipeline failure. based on their influences and dependencies. The value of the dependency relationship between factors is determined from discussions with several pipeline experts in Indonesia, who work in related fields, the result is that there are three main factors that contribute major potential hazards, without being influenced by other factors, that is determining safety factors in the design process, depth pipeline and the existence of SOP in the pipeline system. One factor, namely depth, can be eliminated because there are government regulations requiring natural gas pipelines to be buried in the ground at a certain depth.
Co-Authors Aswin Aswin Budi Hartono Kaswadi, Agung Septian, Diar Azzis Zefry Darmawan