Atmospheric Corrosion to Steel Pile on Meulaboh and Pipeline Structure along Jambi - Riau Area

2019 ◽  
Vol 811 ◽  
pp. 141-146
Author(s):  
Lukman Hakim Budi ◽  
Subawi Handoko
Keyword(s):  
West Coast ◽  
Surface Coating ◽  
Atmospheric Corrosion ◽  
Steel Structures ◽  
Beam Structure ◽  
Corrosion Attack ◽  
Corrosion Rates ◽  
Pipe Elbow ◽  
Sumatra Island ◽  
Attack Data

This study indicated the deterioration of the steel pipe and beam structure in west coast Sumatra made of ASTM A252, and also pipeline along Riau land-Jambi - Batam Island. It was found that severest corrosion occurs at the rate up to 1.6 mm/year (63 mpy) on the steel cross beam-800 on west coast Sumatra. Whereas the corrosion rates on ASTM A234 and API 5L steel structures along the pipeline across Riau - Jambi - Batam occur from the high-to-severe up to 0.43 mm/year (17 mpy) mainly on pipe elbow 16” diameter. Due to this corrosion attack, the steel infrastructure requires whole protection including sacrificial thickness, surface coating, and cathodic protection. The corrosion attack data may be used to provide the required effort and its priority to protect the steel pile and pipe infrastructures on Sumatra Island.

scholarly journals A Field Study of Atmospheric Corrosion of Carbon Steel after Short Exposure in Pelabuhan Ratu, West Java Province, Indonesia

2021 ◽  
Vol 18 (17) ◽  
Author(s):  
Gadang PRIYOTOMO ◽  
Siska PRIFIHARNI ◽  
Lutviasari NURAINI ◽  
Joko TRIWARDONO ◽  
Ahmad ROYANI ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Relative Humidity ◽  
Air Temperature ◽  
Atmospheric Corrosion ◽  
Short Exposure ◽  
Corrosion Attack ◽  
West Java ◽  
Corrosion Rates ◽  
Magnetite Fe3o4 ◽  
Chloride Deposition

The investigation of atmospheric corrosion of mild carbon steel as representative of offshore infrastructure has been carried out in the marine tropical of Pelabuhan Ratu, West Java, Indonesia. They are exposed up to 76 days of periods, and their corrosion rates are determined according to ASTM G1-03. The surface morphology, the elemental compositions and compounds were observed using a scanning electron microscope (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD), respectively.  The environmental parameters of the test site are monitored during exposure, such as air temperature, relative humidity (RH), airborne salinity and dew temperature. Based on the results, the corrosion rates of steels were 2.79 and 2.8 mpy within the 27 and 76 days exposures, respectively. The presence of chloride deposition on the surface of steel can increase the severity of corrosion. Moreover, the detrimental effect of chloride was observed in rust product, which was covered by an oxygen element. The main phases of rust products present were magnetite (Fe3O4) and hematite (α-Fe2O3.H2O). Several cracks were observed in the rust layer, which tended to exfoliate and lose adherence and protectiveness from further corrosion attack. HIGHLIGHTS The presence of chloride deposition on the surface of steel can increase the severity of corrosion. The severity of corrosion attack mainly depends on the exposure time and some climatic parameters, such as relative humidity (RH), air temperature and chloride airborne. The uniform distribution of the chloride tends to increase the production of ferrous chloride in high RH condition and the aqueous layer deposited on carbon steel. There are two phases on corroded carbon steel such as hematite (α-Fe2O3.H2O) and Magnetite (Fe3O4) after exposure GRAPHICAL ABSTRACT

scholarly journals Perbaikan Struktur Bangunan Pasca Gempa dengan menggunakan Serat Karbon (Studi Kasus Gedung Kantor Bea dan Cukai Teluk Bayur Padang)

2016 ◽  
Vol 11 (2) ◽  
pp. 32
Author(s):  
Elvi Roza Syofyan
Keyword(s):  
West Coast ◽  
Carbon Material ◽  
New Technology ◽  
Office Building ◽  
Strong Intensity ◽  
Richter Scale ◽  
Sumatra Island ◽  
Better Than

In the last ten years, the area west coast of Sumatra island has several times experienced the earthquake with strong intensity. Starting from the earthquake in Aceh December 26, 2004 until 30 September 2009 earthquake Pariaman ago. The last earthquake measuring 7.9 on the Richter scale has killed more than 1,000 people and damaged buildings 279 432, with 50 percent of them were severely damaged. Another alternative that is better than doing demolition is to retrofit. In general, the retrofit can be described as the addition of new technology or new technology on a merger between the old system (which already exists). In other words, the retrofit is the process of retrofitting old buildings with the aim of making these buildings resistant to earthquakes. From the calculation and analysis conducted on the carbon material, the material Sika Wrap Hex 230C can be used to retrofit House Office Building Customs Bayur Gulf of Padang. The method of implementation should be properly cared for, so that the strength of the building is expected back as they are resistant to earthquakes. It should be noted once in choosing the method of retrofitting that we will use.

scholarly journals Maps estimates of atmospheric corrosion of low alloy steel in Costa Rica

2015 ◽  
Vol 7 (2) ◽  
pp. 181-191
Author(s):  
Javier Rodríguez Yáñez ◽  
Luis Garita Arce ◽  
Ericka Saborío Leiva
Keyword(s):  
Costa Rica ◽  
Alloy Steel ◽  
Atmospheric Corrosion ◽  
Climatic Data ◽  
Local Models ◽  
Low Alloy Steel ◽  
Atmospheric Parameters ◽  
Corrosion Rates ◽  
Wetting Time ◽  
Low Levels

The Corrosion maps used are to display quickly the different situations in a country. These maps developed are for low alloy steel in Costa Rica depending on climatic data and pollutant levels, considering the different regulations associated with ISO 9223 and models developed by the Center for Research in Corrosion (CICorr). The atmosphere in Costa Rica has high rates of Brooks, considered very corrosive. The corrosion controlling atmospheric parameters are the relative humidity (RH) and Wetting Time (TWH) associated with low levels of pollution and rural type atmospheres. The corrosion rates are between 25 and 80μm*yr-1 (Class 3 and 4 according to ISO 9223). Local models associated with the controlling parameters are more suitable for estimating the corrosion according to ISO 9223.

Corrosive Environment Factors and their Influence on the Development of Weathering Steel Corrosion Products

2020 ◽  
Vol 832 ◽  
pp. 137-146
Author(s):  
Monika Kubzová ◽  
Vit Křivý ◽  
Viktor Urban ◽  
Katerina Kreislova
Keyword(s):  
Atmospheric Corrosion ◽  
Steel Surface ◽  
Protective Layer ◽  
Steel Structures ◽  
Corrosion Products ◽  
Outdoor Environment ◽  
Weathering Steel ◽  
Low Alloy Steels ◽  
Time Of Wetness ◽  
The Impact

This article deals with the topic of atmospheric corrosion. Atmospheric corrosion causes damage to nearly 80% of all existing steel structures. The main parameters of atmospheric corrosion are the time of wetness (TOW), air temperature and aggressive corrosive agents such as chlorides, sulfur dioxide and others. Currently, low alloy steels with improved atmospheric corrosion resistance called weathering steels are used for the steel structures located in outdoor environment. A protective layer of corrosion products is created on the steel surface and this layer can reduce continuation of corrosion of steel. The time of wetness together with the effect of aggressive corrosive agents are various for surfaces oriented vertically or horizontally. Experimental tests of atmospheric weathering steel were carried out to monitor the impact of location and position of surface on the different constructions. These tests allow monitoring the development of corrosion products in real exposures. The article presents a part of the research, which includes monitoring the development of the thickness of corrosion products with regard to the position on the structure. Research is developed to refine of prediction models with the aim of improving determination of corrosion losses during the service life of the structure. Second part of these experiments is dedicated to measuring the deposition rate of chlorides. Chlorides have a corrosive impact on the steel surface. Under normal conditions the chlorides does not create suitable environment for the development of a protective layer of corrosion products.

Measuring Rates and Impact of Corrosion on DOD Equipment

2008 ◽  
Vol 38 ◽  
pp. 163-181 ◽  
Author(s):  
Sean Morefield ◽  
Susan Drozdz ◽  
Vincent F. Hock ◽  
William Abbott
Keyword(s):  
Air Force ◽  
Atmospheric Corrosion ◽  
Large Scale ◽  
Coast Guard ◽  
Weather Data ◽  
Corrosion Monitoring ◽  
Open Structure ◽  
Corrosion Rates ◽  
Monitoring Test ◽  
Environmental Severity

A large scale atmospheric corrosion monitoring test was undertaken for the purpose of characterizing environmental severity. This work was conducted at ground based Army, Navy, Coast Guard, and Air Force sites. At present over 73 sites are in operation. This work adds to the existing worldwide databases to include new military and/or related sites not previously monitored. In addition and to the extent that such data are available, relevant weather data was collected from public or military sources in order to test existing corrosion algorithms for each site. Many of the 1 year exposures have been successfully completed. However, all of the exposures currently in progress will not be completed until early 2008. Sample analyses are in progress. New data have been obtained to show the important effects of sheltering on reducing corrosion rates. Data from Daytona Beach and Tyndall AFB show that even a relatively simple open structure/sunshade can reduce corrosion rates by factors of 2 or 3. New data are being reported on corrosion vs. distance from ocean. Data were also collected for the comparison of corrosion severity among commonly used test sites and within selected sites (multiple locations within a base.)

Atmospheric Corrosion Model for Galvanized Steel Structures

CORROSION ◽  
1992 ◽  
Vol 48 (12) ◽  
pp. 1009-1019 ◽  
Author(s):  
J. W. Spence ◽  
F. H. Haynie ◽  
F. W. Lipfert ◽  
S. D. Cramer ◽  
L. G. McDonald
Keyword(s):  
Atmospheric Corrosion ◽  
Steel Structures ◽  
Galvanized Steel ◽  
Corrosion Model
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