scholarly journals Perancangan Tangki Stainless Steel untuk Penyimpanan Minyak Kelapa Murni Kapasitas 75 m3

2018 ◽  
Vol 3 (1) ◽  
pp. 39 ◽  
Author(s):  
Pekik Mahardhika ◽  
Ayu Ratnasari
Keyword(s):  
Stainless Steel ◽  
Storage Tank ◽  
Raw Materials ◽  
Plate Thickness ◽  
Coconut Oil ◽  
Bottom Plate ◽  
Storage Tanks ◽  
Virgin Coconut Oil ◽  
Storage Container ◽  
Oil Storage

Tangki merupakan wadah penyimpanan yang sering dipakai di berbagai industriseperti petrokimia, pengilangan, dan perminyakan. Tangki penyimpanan tidak hanya menjadi tempat penyimpanan untuk produk dan bahan baku tetapi juga menjaga kelancaran ketersediaan produk dan bahan baku. Selain itu, tangki juga dapat menjaga produk atau bahan baku dari kontaminan. Minyak kelapa murni adalah minyak yang dibuat dari bahan baku kelapa segar. Minyak kelapa murni memiliki daya simpan lebih dari 12 bulan sehingga diperlukan tangki penyimpanan yang memadai demi menjaga produk dari kontaminasi. ASTM 304, ASTM 316L, dan S32304 merupakan stainless steel yang digunakan untuk material plat tangki penyimpanan minyak kelapa murni. Stainless steel merupakan baja tahan korosi sehingga diharapkan dapat menjaga kualitas produk minyak kelapa murni. Penelitian ini bertujuan untuk merancang tangki penyimpanan minyak kelapa murni menggunakan stainless steel. Tangki penyimpanan dirancang memiliki kapasitas 75 m3. Tangki dirancang dengan membandingkan antara API 650 dengan BS 2654. Hasil perhitungan didapatkan ketebalan plat shell aktual 6 mm, ketebalan plat dasar aktual 6 mm, ketebalan plat dasar annular aktual 8 mm, dan ketebalan atap aktual 6 mm. Berdasarkan hasil perhitungan, tegangan pada tangki masih memenuhi syarat karena tegangan ijin tangki lebih besar dari tegangan akibat beban statis, tegangan circumferensial, dan tegangan longitudinal. Dengan demikian, desain tangki penyimpanan dapat dikatakan aman.Kata kunci: API 650, BS 2654, minyak kelapa murni, stainless steel, tangki penyimpananTank is a storage container that is often used by various industries such as petrochemical, refining, and petroleum. Storage tanks isnot only a storage for products and raw materials but also maintain the fluency availability of products and raw materials. Furthermore, the tank can also keep products or raw materials from contaminants. Virgin coconut oil is oil made from fresh coconut. Virgin coconut oil has storability of more than 12 months, so that adequate storage tanks are required to keep the product from contamination. ASTM 304, ASTM 316L, and S32304 are stainless steels used for the material of the virgin coconut oil storage tank. Stainless steel is corrosion resistant steel so it is expected to maintain the quality of virgin coconut oil product. This research aims to design storage tank of virgin coconut oil using stainless steel material. The storage tank is designed to have a capacity of 75 m3. The tank is designed by comparing between API 650 and BS 2654. The calculation results obtained the actual thickness of the shell plate is 6 mm, the actual bottom plate thickness is 6 mm, the actual annular bottom plate thickness is 8 mm, and the actual roof thickness is 6 mm. Based on the calculation, tank stress is still accepted because the allowable stress of tank is larger than the stress due static load, circumferential stress, and longitudinal stress. Thus, the design of storage tank is safe.Keywords: API 650, BS 2654, stainless steel, storage tank, virgin coconut oil 

Behavior of Localized Bottom Bulge in Aboveground Oil Storage Tanks Under Liquid Pressure

2001 ◽  
Vol 124 (1) ◽  
pp. 59-65
Author(s):  
Shoichi Yoshida
Keyword(s):  
Plastic Strain ◽  
Plate Thickness ◽  
Deformation Analysis ◽  
Bottom Plate ◽  
Storage Tanks ◽  
Liquid Pressure ◽  
Element Analysis ◽  
Oil Storage ◽  
Relationship Of ◽  
The Relationship

The bottom plate of aboveground oil storage tanks can bulge, separating from the foundation due to welding deformation. When such a bulge is subjected to liquid pressure, it deforms continuously to make contact with the foundation from the edge, and the remaining area of the bulge decreases with increasing liquid pressure. As a result, the deformation is extremely localized and plastic strain occurs at the bulge. This paper presents a plane strain finite element analysis for the evaluation of localized bottom bulges in aboveground oil storage tanks. Load-incremental, elastic-plastic large deformation analysis is carried out considering the bottom plate contact with the foundation. The relationship of the plastic strain at the bulged bottom plate to the liquid pressure is discussed together with the deformation of the bulge. As a result, the bottom plate thickness has a significant effect on the deformation, but the bulged height does not. After the bulged center makes contact with the foundation, the stress and strain do not increase with increasing liquid pressure. In addition, the permissible bulged profile specified by API Standard 653 elastically deforms to make contact with the foundation under low liquid pressure.

Numerical Study of Oil Storage Tanks during Planar Settlement

2018 ◽  
Vol 878 ◽  
pp. 95-103
Author(s):  
Joko Wisnugroho ◽  
Sutomo
Keyword(s):  
Finite Element ◽  
Storage Tank ◽  
Numerical Study ◽  
Plate Thickness ◽  
Element Model ◽  
American Petroleum Institute ◽  
Seismic Zone ◽  
Storage Tanks ◽  
Oil Storage ◽  
Oil Storage Tank

Inspection and maintenance are necessary to maintain the continuity of critical equipment operations such as oil storage tank. The criteria for the various types of settlement specified in American Petroleum Institute (API) 653. However, the criteria for planar settlement could not be determined. In this paper, a finite element model is developed to study the hoop stress of the tank during planar settlement. In this paper, 384 finite element models were built in order to predict the most effective allowable planar settlement at oil storage tanks. Each model is variation of the tank size, shell plate thickness, seismic zone and planar tilt of the tank. Based on size of tank population in Pertamina, 8 of standard tank size from 500-10.000 m3 were simulated. The simulation results are validated by case study in 500-5.000 m3 full scale oil storage tank. From the results, equation for criteria of planar settlement has been created.

2253 Non-destructive Inspection of Corrosion on a Bottom Plate of Oil Storage Tank Based on Electric Potential Method

2005 ◽  
Vol 2005.1 (0) ◽  
pp. 669-670
Author(s):  
Yasunori SHINDO ◽  
Naotake OHTSUKA ◽  
Takatoshi FURUI ◽  
Hiroshi YABE ◽  
Tomoko HIRAYAMA
Keyword(s):  
Electric Potential ◽  
Storage Tank ◽  
Potential Method ◽  
Bottom Plate ◽  
Oil Storage ◽  
Oil Storage Tank ◽  
Non Destructive

Study on the Cause of Oil Tank Fire and Fire Prevention Countermeasure

2013 ◽  
Vol 864-867 ◽  
pp. 866-870
Author(s):  
Bing Qiang Wang
Keyword(s):  
Storage Tank ◽  
Raw Materials ◽  
Fire Prevention ◽  
Energy Strategy ◽  
Tank Farm ◽  
Oil Storage ◽  
Oil Storage Tank ◽  
Farm Scale ◽  
Oil Tank ◽  
Fire Accident

Oil is a kind of important chemical raw materials, countries have put oil as an important sources of energy and actively expanded its strategic oil reserve along with our country energy strategy adjustment. The number of oil storage increases constantly, the tank farm scale expands unceasingly and fire accident of oil storage tank rises constantly. So it is an important measure for preventing the oil tank fire to analyze reason of oil tank fire and adopt corresponding fire prevention countermeasures.

Buckling Characteristics of Floating Roof Pontoons in Aboveground Storage Tanks Subjected to Bending Load in Two Directions

2008 ◽  
Author(s):  
Shoichi Yoshida ◽  
Kazuhiro Kitamura
Keyword(s):  
Large Diameter ◽  
Bending Moment ◽  
Bottom Plate ◽  
Storage Tanks ◽  
Buckling Strength ◽  
Linear Elastic ◽  
Structural Problems ◽  
Oil Storage ◽  
Bending Load ◽  
Shell Finite Element

The 2003 Tokachi-Oki earthquake caused severe damage to aboveground oil storage tanks due to liquid sloshing. Seven single-deck floating roofs had experienced structural problems as evidenced by sinking failure in large diameter tanks at the refinery in Tomakomai, Japan. The pontoons of the floating roofs might be buckled due to circumferential bending moment during the sloshing. The content in the tank was spilled on the floating roof from small failures which were caused at the welding joints of pontoon bottom plate by the buckling. Then the floating roof began to lose buoyancy and submerged into the content slowly. The authors had reported the buckling strength of the pontoons with and without ring stiffeners subjected to circumferential bending load in the previous papers. This paper presents the buckling strength of the pontoons subjected to both circumferential and radial bending load. The axisymmetric shell finite element method is used in the analysis. Linear elastic bifurcation buckling analysis is carried out and the buckling characteristics of the pontoon with and without ring stiffeners are investigated.

scholarly journals Evaluation of Electrical Properties of Organic Coating on Internal Bottom Plate of Oil Storage Tank

2016 ◽  
Vol 65 (1) ◽  
pp. 24-30 ◽  
Author(s):  
Koya Tokutake ◽  
Haruki Nishi ◽  
Daisuke Ito ◽  
Shinji Okazaki ◽  
Yukitaka Serizawa
Keyword(s):  
Electrical Properties ◽  
Storage Tank ◽  
Organic Coating ◽  
Bottom Plate ◽  
Oil Storage ◽  
Oil Storage Tank

scholarly journals Potential Global Competitiveness of Sri Lankan Virgin Coconut Oil Industry

2018 ◽  
Vol 11 (1) ◽  
pp. 1520-1526
Author(s):  
Pivithuru Janak Kumarasinghe ◽  
Savinda Perera
Keyword(s):  
Sri Lanka ◽  
Market Share ◽  
Raw Materials ◽  
Coconut Oil ◽  
Oil Industry ◽  
Local Market ◽  
Sri Lankan ◽  
Virgin Coconut Oil ◽  
Export Competitiveness

The study focuses on Sri Lankan virgin coconut oil industry because of it is one of the upcoming export products and also its position as one of the key player in the global market. Sri Lankan coconut industry is one of the major foreign exchange and employment generation source and element of the Sri Lankan nation. The study attempted to unearth the determinants of export competitiveness of virgin coconut oil industry in Sri Lanka by drawing attention on Porter’s theory of the competitive advantage of nations. The target population of the study consisted with individual firms which are engaging in virgin coconut oil export in Sri Lanka is two hundred and nineteen. The study used a likert scale to measure the chosen variables. Based on the Pearson Correlation analysis researcher can say that there is significance strong positive relationship between Availability of Raw materials, Quality of demand and Market share of export with the Export Competitiveness. According to regression analysis researcher can say that availability of Raw materials, Local market, Quality of demand and Market share of export has significance positive affect on Advantage of Export Competitiveness.

Sign in / Sign up

Export Citation Format

Share Document