Technology Placement of Drilling Waste Storage with the Use of Soil Cement Screens

2021 ◽  
Vol 1038 ◽  
pp. 296-302
Author(s):  
Olena V. Mykhailovska ◽  
Mykola L. Zotsenko
Keyword(s):  
Compressive Strength ◽  
Power Plant ◽  
Thermal Power ◽  
Storage Facility ◽  
Technological Solution ◽  
Drilling Mud ◽  
Waste Storage ◽  
Soil Cement ◽  
Drilling Waste ◽  
Average Compressive Strength

The authors of the article analyze the known technological solutions for the disposal of waste from drilling wells. The authors propose a technological solution for the arrangement of drilling waste storage from soil-cement elements with the installation of soil-cement coating. Filling the storage facility with waste is proposed to be carried out with layers of drilling mud, soil, ash. Used a layer of fly ash to reduce humidity, if it differs from the optimum. The thickness of the layers was chosen based on ensuring optimal humidity. The authors propose to add ash from the Mykolayiv thermal power plant in the amount of 5 wt.% By weight of cement when installing the walls and covering the sludge storage from soil cement. It is established that with increasing the shelf life of samples in water up to 180 days, the average compressive strength of soil cement samples increases. If we compare without additives and with the addition of the appropriate percentage of removal ash, the value of strength increases by 12-15%.

Compressive Strength and Density of Cementless Unfired Lightweight Brick Utilizing Coal Ash from Coal-Fired Thermal Power Plant

2013 ◽  
Vol 594-595 ◽  
pp. 527-531
Author(s):  
Mohamad Ezad Hafez Mohd Pahroraji ◽  
Hamidah Mohd Saman ◽  
Mohamad Nidzam Rahmat ◽  
Kartini Kamaruddin ◽  
Ahmad Faiz Abdul Rashid
Keyword(s):  
Compressive Strength ◽  
Power Plant ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Bottom Ash ◽  
Coal Ash ◽  
Hydrated Lime ◽  
Raw Material ◽  
The World ◽  
Blastfurnace Slag

Millions tons of coal ash which constitute of fly ash and bottom ash were produced annually throughout the world. They were significant to be developed as masonry brick to substitute the existing widely used traditional material such as clay and sand brick which were produced from depleting and dwindling natural resources. In the present study, the coal ash from coal-fired thermal power plant was used as the main raw material for the fabrication of cementless unfired lightweight brick. The binder comprising of Hydrated Lime (HL)-activated Ground Granulated Blastfurnace Slag (GGBS) system at binding ratio 30:70, 50:50 and 70:30 were used to stabilize the coal ash in the fabrication process of the brick. Foam was used to lightweight the brick. The compressive strength and ambient density were evaluated on the brick. The results indicated that the brick incorporating HL-GGBS system achieved higher strength of 20.84N/mm2 at 28 days compare to the HL system with strength of 13.98N/mm2 at 28 days. However, as the quantity of foam increase at 0%, 25%, 50%, 75% and 100%, the strength and density for the brick decreased.

Physical Properties and Microstructure of the Fly Ash Based-Geopolymer/Granule Composites

2014 ◽  
Vol 680 ◽  
pp. 54-60
Author(s):  
Ji Hwan Won ◽  
Seung Gu Kang
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Power Plant ◽  
Crystalline Phase ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Molding Pressure ◽  
Recycling Rate ◽  
Hand Tapping ◽  
Geopolymer Composites

In this research, the fly ash (F/A) discharged from a thermal power plant was recycled to manufacture geopolymer containing granules instead of sand. Several types of granules using fly ash were assessed. The properties of the geopolymer/granule composites were analyzed as a function of the crystalline phase and size of the granules, as well as the molding pressure. The compressive strength and density of the geopolymer composites containing the hydrated granules fabricated by hand-tapping were 5.7 MPa and 1.47 g/cm3, respectively, while composites created by pressure molding were 15.6 MPa and 1.73 g/cm3. These results are comparative or superior to those of commercial cement bricks (8 MPa according to KS F 4004). Therefore, the geopolymer/granule composites fabricated in this study can be applied to cement bricks and can be a base for the enhancement of the recycling rate of fly ash.

scholarly journals Reutilización de Ripios de perforación en base agua como material de construcción / Reusing of drilling residues with water based as construction material

Ciencia Unemi ◽  
2015 ◽  
Vol 8 (13) ◽  
pp. 62
Author(s):  
Sara Rojas Blanco ◽  
Olivia Atiaga Franco ◽  
David Vinicio Carrera Villacrés
Keyword(s):  
Compressive Strength ◽  
Moisture Absorption ◽  
Raw Materials ◽  
Construction Material ◽  
Chemical Properties ◽  
Total Petroleum Hydrocarbons ◽  
Drill Cuttings ◽  
Soil Cement ◽  
Water Based ◽  
Average Compressive Strength

La creciente actividad hidrocarburífera en Ecuador intensificó la extracción de crudo, generando volúmenes considerables de Ripios de Perforación, los cuales por sus características físico-químicas no son reincorporados en el proceso, convirtiéndolos en desecho. El objetivo de la investigación fue determinar el potencial de reutilización de ripios de perforación en base agua como material de construcción, obteniendo muestras representativas de los ripios, que fueron dispuestos en celdas de confinamiento durante enero 2009 a agosto 2012 en el Área Operativa Shushufindi EP PETROECUADOR. Los resultados físico-químicos y mecánicos, analizados en laboratorio, determinaron como alternativas la estabilización con cemento para base en vías y la fabricación de ladrillos. En ambos casos se realizaron pruebas de resistencia a la compresión inconfinada y lixiviación, concluyendo que para base en vías necesita adicionar 10% de cemento colocando una barrera económica, mientras que los ladrillos no requieren otras materias primas y dan resistencias de 22,6MPa. Las pruebas de lixiviación mostraron reducción en la concentración de hidrocarburos totales de petróleo (TPH), bario, cromo, cadmio y níquel permitiendo en la práctica fabricar ladrillos artesanales con resistencia de 19MPa y 22% de absorción de humedad, útiles para construir muros sin exposición a humedades extremas.Palabras Clave: Estabilización, solidificación y reutilización. The growing petroleum activity in Ecuador has intensified the extraction of crude oil, generating substantial volumes of drill cuttings which, by their physicochemical characteristics, are not reincorporated in the process turning them into scrap. Given this, the objective was to determine the potential for reuse of water-based drill cuttings as a building material.This investigation obtained representative samples of cuttings that were disposed of in hazardous waste pits from January 2009 to August 2012 by the Public Company Petroecuador, operating in Shushufindi. The mechanical, physical, and chemical properties were analyzed in the laboratory for determining the material as a soil-cement alternative or for use in fabricating bricks. In both cases unconfined compressive strength and leaching was carried out and concluded that, for use as a soil-cement alternative there should be the addition of 10% cement with economic considerations. Brick design required no other raw materials and gave an average compressive strength of 22.6MPa. Leaching tests showed reduction in the concentration of total petroleum hydrocarbons (TPH), barium, chromium, cadmium and nickel, allowing for practical manufacturing of bricks in small production with an average compressive strength of 19MPa and 22% moisture absorption. These bricks would be useful for walls with low exposure to humidity.

Experience From Safety Assessment of the Existing Storage Facility for Solid Radwaste at Ignalina NPP

2003 ◽  
Author(s):  
P. Poskas ◽  
V. Ragaisis ◽  
A. Smaizys
Keyword(s):  
Power Plant ◽  
Nuclear Power ◽  
Safety Assessment ◽  
Power Level ◽  
Storage Facility ◽  
Design Data ◽  
Grid Connection ◽  
Waste Storage ◽  
Radiological Data ◽  
Interim Storage

There is only one nuclear power plant in Lithuania — Ignalina NPP (INPP). The INPP operates two similar units with present power level of about 1250 MW(e) each. They were commissioned (first grid connection) in 1983 and 1987 respectively and provide approximately 70–80 per cent of the electricity produced in Lithuania. From the beginning of INPP operation all power plant generated solid radwaste is collected and stored in the solid radwaste facility that is located in INPP sanitary protected area. The storage facility for solid radwaste at INPP consists of four above ground buildings, namely buildings No. 155, No. 155/1, No. 157 and No. 157/1. This facility is Soviet type facility designed for the interim storage of low and intermediate level radwaste arising as a consequence of operation of NPP. The institutional waste from industry, hospitals etc., including sealed sources as well, has been stored in this facility from 1990. At present this radioactive waste storage facility is still not licensed but SAR is prepared and licensing process is going on. The paper provides information on INPP solid radwaste storage facility and discusses problems met during the safety assessment of this facility: lack of the information on the inventory data, lack of design data for the buildings etc. Modeling results of the structural analysis, radiological data, shielding analysis and proposals to improve the safety of the facility also are discussed.

Application of slag from thermal power plant for the production of porous filler

2021 ◽  
Vol 6 (2) ◽  
pp. 110-116
Author(s):  
Ihor Mitin ◽  
◽  
Diana Kindzera ◽  
Volodymyr Atamanyuk ◽  
◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Compressive Strength ◽  
Power Plant ◽  
Thermal Power Plant ◽  
Raw Materials ◽  
Thermal Power ◽  
Raw Material ◽  
Drying Process ◽  
Filtration Method ◽  
Porous Filler

The article is devoted to obtaining a porous filler from the slag of the Thermal Power Plant and investigation of the filtration method for the drying of slag and clay as main raw materials for preparing the charge for porous filler production. The possibility of using TPP slag as the raw material for the production of porous filler has been proved. The main benefits of using such wastes in the production process are environmental protection, conservation of raw resources for the production of finished products. According to the results of the research, insignificant values of the pressure drop confirm the application feasibility of the filtration drying as an energy-saving method of the drying of slag and clay for preparing the charge for porous filler production. The influence of the temperature of the drying agent in the range from 313 to 373K on kinetic during filtration drying of slag and clay has been established. Obtained results are useful for the organization and intensification of the filtration drying process of slag and clay as the preliminary stage at the porous fillers production line. The qualitative new porous filler with the bulk density of 230 kg/m3, the specific heat of 0,82 kJ/kg∙K, the thermal conductivity of 0,067 W/m∙K and compressive strength of 27,7 MPa has been obtained which can be used for the production of lightweight concretes.

Nonlinear Trend Analysis of Mill Fan System Vibrations for Predictive Maintenance and Diagnostics

2012 ◽  
Vol 58 (4) ◽  
pp. 351-356
Author(s):  
Mincho B. Hadjiski ◽  
Lyubka A. Doukovska ◽  
Stefan L. Kojnov
Keyword(s):  
Power Plant ◽  
Trend Analysis ◽  
Thermal Power Plant ◽  
Power Plants ◽  
Thermal Power ◽  
Balkan Peninsula ◽  
Predictive Maintenance ◽  
Nonlinear Trend ◽  
The Subject ◽  
The Given

Abstract Present paper considers nonlinear trend analysis for diagnostics and predictive maintenance. The subject is a device from Maritsa East 2 thermal power plant a mill fan. The choice of the given power plant is not occasional. This is the largest thermal power plant on the Balkan Peninsula. Mill fans are main part of the fuel preparation in the coal fired power plants. The possibility to predict eventual damages or wear out without switching off the device is significant for providing faultless and reliable work avoiding the losses caused by planned maintenance. This paper addresses the needs of the Maritsa East 2 Complex aiming to improve the ecological parameters of the electro energy production process.

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