Analisis Gerak SPM Hex-07 dan Tegangan Lokal pada Mooring Lug

Gymnastiar, Farhan (2023) Analisis Gerak SPM Hex-07 dan Tegangan Lokal pada Mooring Lug. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Floating structure seperti kapal tanker yang saat ini banyak digunakan untuk eksplorasi minyak dan gas bumi dipengaruhi oleh beban lingkungan. Perlu untuk meminimalisir gerak dari kapal tanker dengan menggunakan Single Point Mooring (SPM). SPM berguna sebagai sistem tambat untuk meredam gerak dari tanker serta dapat mentransfer minyak dan gas ke tempat pemrosesan selanjutnya. Mooring lug pada Turntable Bearing Unit SPM akan mengikuti arah gerak tanker. Analisis respon yang dilakukan menghasilkan arah heading terbsar untuk tanker adalah dari gerakan roll arah 90˚ pada kondisi ballast dengan nilai 3.592 deg/m, sedangkan untuk SPM dengan respon terbesar dari gerakan pitch arah 0˚ dengan nilai 3.323 deg/m. Analisis tension juga dilakukan dan memperolah tension terbesar pada Hawser PS dengan nilai 771.199 kN dengan semua tension yang dihasilkan dibawah safety factor dari ABS Guide for Position Mooring Systems. Analisis tegangan lokal pada mooring lug akibat tension menghasilkan nilai terbesar 226.46 MPa yang tergolong aman karena dibawah tegangan izin sebesar 253.65 mengacu pada ABS Rules for Building Classing Single Point Moorings.
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Floating structures such as tankers that are currently widely used for oil and gas exploration are affected by environmental loads. It is necessary to minimize the motion of the tanker by using Single Point Mooring (SPM). SPM is useful as a mooring system to dampen motion from the tanker and can transfer oil and gas to the next processing site. The Mooring lug in Turntable Bearing Unit will follow the direction of motion of the tanker. The response analysis produced the largest heading direction for the tanker was from a 90° roll direction movement in ballast conditions with a value of 3.592 deg/m, while for SPM with the largest response from a 0° directional pitch movement with a value of 3.323 deg/m. Tension analysis was also performed and obtain the largest tension in the PS Hawser with a value of 771,199 kN with all tension generated under the safety factor of the ABS Guide for Position Mooring Systems. Analysis of the local stress on the mooring lug due to tension produces a highest value of 226.46 MPa which is classified as safe because it is under an allowable stress of 253.65 referring to the ABS Rules for Building Classing Single Point Moorings.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	floating structure, tanker, single point mooring, SPM, mooring lug,
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering > TC1665 Offshore structures--Materials. T Technology > TC Hydraulic engineering. Ocean engineering > TC1680 Offshore structures
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	Farhan Gymnastiar
Date Deposited:	22 Jul 2023 13:33
Last Modified:	22 Jul 2023 13:33
URI:	http://repository.its.ac.id/id/eprint/98886

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