PERENCANAAN ALAT UKUR CLEARANCE UNTUK MAIN ROTATING BEARING (MRB) PADA SINGLE POINT MOORING (SPM)
Abstract
Single Point Mooring (SPM) atau yang sering kita sebut dengan Single Buoy Mooring (SBM) adalah Buoy terapung yang berlabuh di lepas pantai yang merupakan sarana bertambatnya kapal tanker di laut, yang sekaligus berfungsi sebagai penyalur muatan cair seperti produk minyak bumi  dari  atau  ke kapal tanker. Terletak pada jarak beberapa kilometer dari fasilitas offshore dan terhubung menggunakan sub-sea dan jalur pipa bawah laut.
Dikarenakan kebutuhan yang sangat penting untuk transportasi laut dalam muatan cair dan gas, SPM harus dalam keadaan yang baik dan siap untuk beroperasi. MRB sebagai sumber tenaga utama yang sangat penting, apabila mengalami kerusakan pada MRB, maka akan berdampak pada menurunnya produktifitas operasi. Oleh karena itu untuk mencegah adanya kerusakan pada Main Rotating Bearing (MRB) diperlukan pengecekan clearance pada bearing setiap 5 tahun                    sekali.
Untuk mempermudah mengambil data ukur clearance, maka dibuatkan desain alat bantu. Setelah dilakukan proses jack load pada MRB dengan alat bantu didapatkan hasil ukur clearance yaitu 0,03 mm, sedangkan  pada batasan maksimal ukur clearance sesuai dengan regulasi pemeliharaan SPM adalah 0,1 mm. dari hasil pengukuran clearance tersebut masih dalam batas standar atau dinyatakan masih dalam kondisi baik.
Kata kunci: SPM, MRB, Clearance, Jack Load, Bearing
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