ANALISIS RESPON GERAK FLOATING CRANE BARGE UNTUK DECOMMISSIONING STRUKTUR LEPAS PANTAI

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Nurman Firdaus Firdaus
Eko Budi Djatmiko
Rudi Walujo Prastianto
Muhammad Fajariansyah Ismail

Abstract

Penerapan floating crane barge memiliki potensi besar untuk operasi pengangkatan struktur dalam mendukung decommissioning anjungan lepas pantai pasca operasi. Respon gerak floating crane barge dalam perairan bergelombang selama operasi pengangkatan struktur di laut menjadi faktor penting dalam menunjang operasional yang aman. Pada penelitian ini, respon gerak dinamis floating crane barge terhadap gelombang dilakukan dengan simulasi eksperimen di laboratorium maneuvering ocean basin. Model uji barge yang dilengkapi dengan struktur crane boom sederhana dibuat dengan perbandingan skala 1:28. Respon gerak model uji dievaluasi dengan kondisi gelombang reguler dan gelombang irreguler. Karakteristik gerak amplitudo dijasikan dalam grafik RAO yang mana hasilnya menunjukkan kesesuaian antara gelombang reguler dan irreguler. Respon gerak terhadap gelombang acak mengalami peningkatan secara signifikan terjadi dari kondisi gelombang Hs = 0.50 m, Tp = 4.00 s ke kondisi gelombang Hs = 1.00 m, Tp = 5.50 s untuk heave sebesar 2.8 kali, untuk roll sebesar 2.5 kali dan untuk pitch sebesar 1.5 kali.

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