TY  - CONF
AU  - Arsić, M.
AU  - Bošnjak, Srđan
AU  - Grabulov, Vencislav
AU  - Veljović, Aleksandar
AU  - Savić, Zoran
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1961
AB  - Stable supply tank, with volume V = 250 m3 and operating pressure p = 1,5 MPa, of generation unit 6 at thermal power plant 'Nikola Tesla A' in Obrenovac, is designed for water-steam working fluid. It was made of steel Č 1204 as a single-part welded structure with a single wall. Cylindrical tank shell consists of 8 segments, while torispherical deep bottoms consist of 3 segments. The tank is in the horizontal position and it lays on 4 supports. There are five manometers installed at the tank for pressure control, as well as 5 spring-loaded safety valves. In this paper results of non-destructive tests performed on the tank are presented. Mechanical damages on parent material, up to 1.5 mm deep, were detected at the outer surface of the cylindrical section of the right bottom (as seen from the boiler) and on the inner surface of the shell, as well as sporadic pitting corrosion, up to 0.5 mm deep, and 2 mm misalignment of sheet metals in areas where shell segments are joined. Crack type linear indications were detected on the surface of welded joints through the use of magnetic particle testing. Through ultrasonic and radiographic testing it was determined that the homogeneity of welded joints is satisfactory. Hardness testing was performed on all segments of the tank, and obtained values were in the range between 118 and 130 HB. Metallographic examination, performed on specimens of all segments of the tank, showed that microstructure of material is either fine-grained or striped ferrite-pearlite. On the basis of test results the repair technology for shell and bottom segments was made, while on the basis of the analytical calculation of tank strength the integrity evaluation was carried out for the upcoming period of service, depending on the category of the vessel.
PB  - Trans Tech Publications Ltd
C3  - Advanced Materials Research
T1  - Analysis of current state and integrity evaluation for the supply tank of generation unit 6 of thermal power plant Nikola Tesla ”A”, Obrenovac
EP  - 19
SP  - 14
VL  - 1029
DO  - 10.4028/www.scientific.net/AMR.1029.14
ER  - 

@conference{
author = "Arsić, M. and Bošnjak, Srđan and Grabulov, Vencislav and Veljović, Aleksandar and Savić, Zoran",
year = "2014",
abstract = "Stable supply tank, with volume V = 250 m3 and operating pressure p = 1,5 MPa, of generation unit 6 at thermal power plant 'Nikola Tesla A' in Obrenovac, is designed for water-steam working fluid. It was made of steel Č 1204 as a single-part welded structure with a single wall. Cylindrical tank shell consists of 8 segments, while torispherical deep bottoms consist of 3 segments. The tank is in the horizontal position and it lays on 4 supports. There are five manometers installed at the tank for pressure control, as well as 5 spring-loaded safety valves. In this paper results of non-destructive tests performed on the tank are presented. Mechanical damages on parent material, up to 1.5 mm deep, were detected at the outer surface of the cylindrical section of the right bottom (as seen from the boiler) and on the inner surface of the shell, as well as sporadic pitting corrosion, up to 0.5 mm deep, and 2 mm misalignment of sheet metals in areas where shell segments are joined. Crack type linear indications were detected on the surface of welded joints through the use of magnetic particle testing. Through ultrasonic and radiographic testing it was determined that the homogeneity of welded joints is satisfactory. Hardness testing was performed on all segments of the tank, and obtained values were in the range between 118 and 130 HB. Metallographic examination, performed on specimens of all segments of the tank, showed that microstructure of material is either fine-grained or striped ferrite-pearlite. On the basis of test results the repair technology for shell and bottom segments was made, while on the basis of the analytical calculation of tank strength the integrity evaluation was carried out for the upcoming period of service, depending on the category of the vessel.",
publisher = "Trans Tech Publications Ltd",
journal = "Advanced Materials Research",
title = "Analysis of current state and integrity evaluation for the supply tank of generation unit 6 of thermal power plant Nikola Tesla ”A”, Obrenovac",
pages = "19-14",
volume = "1029",
doi = "10.4028/www.scientific.net/AMR.1029.14"
}

Arsić, M., Bošnjak, S., Grabulov, V., Veljović, A.,& Savić, Z.. (2014). Analysis of current state and integrity evaluation for the supply tank of generation unit 6 of thermal power plant Nikola Tesla ”A”, Obrenovac. in Advanced Materials Research
Trans Tech Publications Ltd., 1029, 14-19.
https://doi.org/10.4028/www.scientific.net/AMR.1029.14

Arsić M, Bošnjak S, Grabulov V, Veljović A, Savić Z. Analysis of current state and integrity evaluation for the supply tank of generation unit 6 of thermal power plant Nikola Tesla ”A”, Obrenovac. in Advanced Materials Research. 2014;1029:14-19.
doi:10.4028/www.scientific.net/AMR.1029.14 .

Arsić, M., Bošnjak, Srđan, Grabulov, Vencislav, Veljović, Aleksandar, Savić, Zoran, "Analysis of current state and integrity evaluation for the supply tank of generation unit 6 of thermal power plant Nikola Tesla ”A”, Obrenovac" in Advanced Materials Research, 1029 (2014):14-19,
https://doi.org/10.4028/www.scientific.net/AMR.1029.14 . .

TY  - JOUR
AU  - Arsić, Miodrag
AU  - Rakin, Marko
AU  - Radaković, Zoran
AU  - Veljović, Aleksandar
AU  - Šarkočević, Živko
PY  - 2009
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5173
AB  - The Pressure Equipment Directive - PEV 97/23/EC regards only the design, manufacture and conformity assessment of pressure equipment and assemblies of pressure equipment and applies to equipment subject to a maximum allowable pressure exceeding 0.5 bar.
When pressure equipment is installed at an energy producing facility, then it may fall within the scope of other Directives. For instance, a compressor assembly falls wilhin the scope of the Pressure Equipment Directive 97/23/EC, /1/, Simple Pressure Vessels Directive 87/404/EEC, /2/, Machinery Directive 98/37/EEC, /3/, and the Low Voltage Directive (LVD) 2006/95/EC, /4/, since parts of the assembly, the compressor, tanks, condenser, measurement and regulation devices and instruments, armature, electromotor, and other elements, all individually fall within the scope of a particular directive. Transportable pressure equipment falls within the scope of Directive 99/36/EC, /5/. The responsibility of the manufacturer, or supplier of aggregates, in the form of a structure, is such thaI al parts of the equipment must conform to the requirements of the corresponding directive.
The paper gives a review and basic characteristics of the new and general approach to standardization and technical conformity only for pressure equipment and machines, that pertain to structural integrity.
PB  - Savez energetIčara
T2  - Energija, ekonomija, ekologija, List Saveza energetičara
T1  - Implementation of European directives on energy
EP  - 018
IS  - 1-2
SP  - 014
VL  - XI
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5173
ER  - 

@article{
author = "Arsić, Miodrag and Rakin, Marko and Radaković, Zoran and Veljović, Aleksandar and Šarkočević, Živko",
year = "2009",
abstract = "The Pressure Equipment Directive - PEV 97/23/EC regards only the design, manufacture and conformity assessment of pressure equipment and assemblies of pressure equipment and applies to equipment subject to a maximum allowable pressure exceeding 0.5 bar.
When pressure equipment is installed at an energy producing facility, then it may fall within the scope of other Directives. For instance, a compressor assembly falls wilhin the scope of the Pressure Equipment Directive 97/23/EC, /1/, Simple Pressure Vessels Directive 87/404/EEC, /2/, Machinery Directive 98/37/EEC, /3/, and the Low Voltage Directive (LVD) 2006/95/EC, /4/, since parts of the assembly, the compressor, tanks, condenser, measurement and regulation devices and instruments, armature, electromotor, and other elements, all individually fall within the scope of a particular directive. Transportable pressure equipment falls within the scope of Directive 99/36/EC, /5/. The responsibility of the manufacturer, or supplier of aggregates, in the form of a structure, is such thaI al parts of the equipment must conform to the requirements of the corresponding directive.
The paper gives a review and basic characteristics of the new and general approach to standardization and technical conformity only for pressure equipment and machines, that pertain to structural integrity.",
publisher = "Savez energetIčara",
journal = "Energija, ekonomija, ekologija, List Saveza energetičara",
title = "Implementation of European directives on energy",
pages = "018-014",
number = "1-2",
volume = "XI",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5173"
}

Arsić, M., Rakin, M., Radaković, Z., Veljović, A.,& Šarkočević, Ž.. (2009). Implementation of European directives on energy. in Energija, ekonomija, ekologija, List Saveza energetičara
Savez energetIčara., XI(1-2), 014-018.
https://hdl.handle.net/21.15107/rcub_machinery_5173

Arsić M, Rakin M, Radaković Z, Veljović A, Šarkočević Ž. Implementation of European directives on energy. in Energija, ekonomija, ekologija, List Saveza energetičara. 2009;XI(1-2):014-018.
https://hdl.handle.net/21.15107/rcub_machinery_5173 .

Arsić, Miodrag, Rakin, Marko, Radaković, Zoran, Veljović, Aleksandar, Šarkočević, Živko, "Implementation of European directives on energy" in Energija, ekonomija, ekologija, List Saveza energetičara, XI, no. 1-2 (2009):014-018,
https://hdl.handle.net/21.15107/rcub_machinery_5173 .

TY  - JOUR
AU  - Arsić, Miodrag
AU  - Veljović, Aleksandar
AU  - Rakin, Marko
AU  - Radaković, Zoran
PY  - 2008
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/844
AB  - Noseća konstrukcija trakastih transportera, koja pred-stavlja sistem sa izraženim elastičnim svojstvima njegovih delova, izložena je složenim opterećenjima dinamičkog karaktera. Ocena stanja pogona i konstrukcija trakastih transportera moguća je jedino na osnovu određenih ispitivanja u radnim uslovima. U radu su prikazani rezultati tenzometrijskih merenja deformacija na vratilu pogonskog bubnja trakastog transportera, za različite režime opterećenja. Zatim su na osnovu utvrđenih zavisnosti naprezanje-vreme definisane funkcije raspodele napona i odgovarajući spektari opterećenja, koji omogućuju kvantitativnu ocenu ponašanja komponenata konstrukcije u području zamorne čvrstoće materijala. Takođe, prikazano je kako se rezultati merenja mogu iskoristiti za procenu veka elemenata pogonskog reduktora. .
AB  - The load carrying structure of belt conveyors, a system with excessive elastic properties of its parts, is subjected to complex loads of dynamic character. Assessment of state of the drive and conveyor structure is possible only based on certain investigations in operating conditions. This paper presents results of tensometric measurements of deformations for various load regimes on belt conveyor drive drum shaft. Thereupon, on the basis of the obtained stress-time dependence, the functions of stress distribution and corresponding loading spectra are defined that enable a quantitative estimation of structural component behavior in the range of material fatigue strength. Also, it is shown how results of the measurements may be used for evaluating the lifespan of driving speed reducer elements. .
PB  - Institut za ispitivanje materijala, Beograd
T2  - Integritet i vek konstrukcija
T1  - Mogućnost procene veka prenosnika reduktora za pogon trakastih transportera primenom tenzometrijskih merenja
T1  - Possibility of life assessing the speed reducer for belt conveyor drive by applying tensometric measurements
EP  - 164
IS  - 3
SP  - 159
VL  - 8
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1298
ER  - 

@article{
author = "Arsić, Miodrag and Veljović, Aleksandar and Rakin, Marko and Radaković, Zoran",
year = "2008",
abstract = "Noseća konstrukcija trakastih transportera, koja pred-stavlja sistem sa izraženim elastičnim svojstvima njegovih delova, izložena je složenim opterećenjima dinamičkog karaktera. Ocena stanja pogona i konstrukcija trakastih transportera moguća je jedino na osnovu određenih ispitivanja u radnim uslovima. U radu su prikazani rezultati tenzometrijskih merenja deformacija na vratilu pogonskog bubnja trakastog transportera, za različite režime opterećenja. Zatim su na osnovu utvrđenih zavisnosti naprezanje-vreme definisane funkcije raspodele napona i odgovarajući spektari opterećenja, koji omogućuju kvantitativnu ocenu ponašanja komponenata konstrukcije u području zamorne čvrstoće materijala. Takođe, prikazano je kako se rezultati merenja mogu iskoristiti za procenu veka elemenata pogonskog reduktora. ., The load carrying structure of belt conveyors, a system with excessive elastic properties of its parts, is subjected to complex loads of dynamic character. Assessment of state of the drive and conveyor structure is possible only based on certain investigations in operating conditions. This paper presents results of tensometric measurements of deformations for various load regimes on belt conveyor drive drum shaft. Thereupon, on the basis of the obtained stress-time dependence, the functions of stress distribution and corresponding loading spectra are defined that enable a quantitative estimation of structural component behavior in the range of material fatigue strength. Also, it is shown how results of the measurements may be used for evaluating the lifespan of driving speed reducer elements. .",
publisher = "Institut za ispitivanje materijala, Beograd",
journal = "Integritet i vek konstrukcija",
title = "Mogućnost procene veka prenosnika reduktora za pogon trakastih transportera primenom tenzometrijskih merenja, Possibility of life assessing the speed reducer for belt conveyor drive by applying tensometric measurements",
pages = "164-159",
number = "3",
volume = "8",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1298"
}

Arsić, M., Veljović, A., Rakin, M.,& Radaković, Z.. (2008). Mogućnost procene veka prenosnika reduktora za pogon trakastih transportera primenom tenzometrijskih merenja. in Integritet i vek konstrukcija
Institut za ispitivanje materijala, Beograd., 8(3), 159-164.
https://hdl.handle.net/21.15107/rcub_technorep_1298

Arsić M, Veljović A, Rakin M, Radaković Z. Mogućnost procene veka prenosnika reduktora za pogon trakastih transportera primenom tenzometrijskih merenja. in Integritet i vek konstrukcija. 2008;8(3):159-164.
https://hdl.handle.net/21.15107/rcub_technorep_1298 .

Arsić, Miodrag, Veljović, Aleksandar, Rakin, Marko, Radaković, Zoran, "Mogućnost procene veka prenosnika reduktora za pogon trakastih transportera primenom tenzometrijskih merenja" in Integritet i vek konstrukcija, 8, no. 3 (2008):159-164,
https://hdl.handle.net/21.15107/rcub_technorep_1298 .