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All Journal Jurnal Teknologi Maritim Proceedings Conference on Marine Engineering and its Application
Ekky Nur Budiyanto
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Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering Mechanical Engineering

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Perancangan Ballast Piping System Pada Kapal Ro-Ro Passanger 146 M Ikrom Tri Mahdi; Bambang Antoko; Ekky Nur Budiyanto
Proceedings Conference on Marine Engineering and its Application Vol 6 No 1 (2023): Conference on Marine Engineering and its Aplication
Publisher : Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33863/cmea.v6i1.2607

Abstract

The way ballast system works in general is to fill the ballast tank located at double bottom with seawater taken from the sea chest. The sea water is sucked up by ballast pump through main pipeline and branch pipes. In addition there is a valve that functions as opening and closing of the flow, and the overboard as a drain which is above the ship's draft. On this ship, the function of a cargo ship is changed to a passenger ship. Because there was a change in the equipment in engine room, it required a re-design of the ballast system. The design of this system follows the recommendations from BKI 2022 Volume III of the Machinery Installation Regulations. The design of the ballast system piping uses a ring main type, in the form of PID design and isometric design. The total length of pipe is 241 meters with details of 165,6 meters for the main pipe and 75,4 meters for the branch pipe. Using the type of galvanized steel material with ASTM A795 standards. The nominal diameter used of this system is based on calculations, namely 250 mm for the main pipe and 90 mm for the branch pipe.
Analisis Tegangan Sistem Perpipaan Cold Reheat Boiler Berkapasitas 2300 Ton/Jam Pada Kondisi Tidak Operasi Mahardhika, Pekik; Adi Wirawan Husodo; Ekky Nur Budiyanto; Benedicta Dian Alfanda; Rina Sandora
Jurnal Teknologi Maritim Vol. 7 No. 2 (2024): Jurnal Teknologi Maritim
Publisher : Pusat Penelitian dan Pengabdian Masyarakat Politeknik Perkapalan Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35991/jtm.v7i2.34

Abstract

Salah satu pembangkit listrik bertenaga uap terbesar di Jawa Timur menggunakan 3 (tiga) unit boiler dengan kapasitas masing-masing sebesar 2300 ton/h untuk mendukung fungsinya. Pada akhir tahun 2023 salah satu unit boiler (Unit-7) dilakukan shut-down untuk melakukan kegiatan perawatan. Perawatan pada sistem perpipaan dilakukan pengecekan terhadap kemungkinan pengurangan ketebalan pipa dan pengecekan terhadap posisi elevasi pipa ketika kondisi tidak beroperasi (cold condition). Salah satu sistem perpipaan pada unit 7 adalah Cold Reheat Pipe (CRP). Analisa tegangan pada sistem perpipaan perlu dilakukan dan menjadi satu kesatuan kegiatan proses pengecekan sistem perpipaan berguna untuk mengetahui apakah dalam kondisi tanpa operasi (cold condition) masih memenuhi kriteria ASME B31.1 (dikatakan aman) atau tidak. Tahapan penelitian ini meliputi pemodelan & simulasi tegangan pipa menggunakan stress analysis software kondisi tanpa operasi (cold condition) dan disesuaikan dengan kriteria penerimaan ASME B31.1. Dari hasil simulasi menunjukkan bahwa seluruh tegangan yang terjadi pada sistem perpipaan CRP BS 130 dan CRP BS 131 lebih rendah dari tegangan izin. Disimpulkan bahwa sistem perpipaan dalam kondisi tidak beroperasi aman bahkan pada ketebalan pipa yang ada.
Co-Authors Adi Wirawan Husodo Bambang Antoko Benedicta Dian Alfanda Ikrom Tri Mahdi Mahardhika, Pekik Rina Sandora