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Fitness For Service Assessment Pada Storage Tank Dengan Cacat Shell Distortions Berdasarkan Standar API 579 Dan Metode Elemen Hingga

ABSTRACT
Storage tanks are storage containers frequently used in various industries such as petrochemical, refining, petroleum, and others. The reliability of storage tanks is crucial because structural failures can result in serious consequences. The purpose of this study is to evaluate the operational feasibility of tanks with shell distortion defects in the form of arbitrary out of roundness based on the API 579 standard and to analyze the effect of parameter variations on tanks with global out of roundness defects on the safety factor and maximum circumferential stress. Case studies were conducted on tanks with Level 1 to Level 2 assessment stages, parametric studies were conducted using the finite element method. The Level 1 assessment results showed that the tank failed because the out-of-roundness deviation exceeded the tolerance of 25 mm. However, at Level 2, the Remaining Strength Factor (RSF) calculation results for eight courses were ≥ 0.9. The parametric study analysis showed that decreasing the Dmin/Dmax ratio increased the out-of-roundness and maximum circumferential stress, which resulted in a decrease in the safety factor. Meanwhile, increasing the H/D ratio caused an increase in the maximum stress and a decrease in the safety factor from 1.145 to 0.703. Thus, tank geometries with high H/D values or large distortions have a higher potential for failure..
Keywords: Fitness for Service, API 579, Shell Distortion, Finite Element Method, Storage Tank, Remaining Strength Factor.

Ketersediaan
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Perpustakaan Universitas Riau 2107112778
2107112778
Tersedia
Informasi Detail
Judul Seri
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No. Panggil
2107112778
Penerbit
Pekanbaru : Universitas Riau – F.TEKNIK – mesin.,
Deskripsi Fisik
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Bahasa
Indonesia
ISBN/ISSN
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Klasifikasi
2107112778
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Tipe Media
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Tipe Pembawa
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Edisi
-
Subjek
TEKNIK MESIN
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