Sediment Monitoring and Impact Analysis Lab


Sediment Monitoring and Abrasion Testing Laboratory

 

 

     Sediment Monitoring and Abrasion Testing Laboratory Brochure

      About us

      The information about the sediment properties are required for mitigation or proper handling of hydro-abrasive erosion issues due to growing focus of hydropower in Himalayan region. Hydro-abrasive erosion depends on sediment concentration, size, shape and mineral composition. The consideration of hydro-abrasive erosion issue is required in both planning stage of a hydropower project as well as the maintenance and renovation of existing hydropower projects. To study and mitigate the hydro-abrasive issues in Himalayan region, a laboratory with state of the art instrumentation is established at AHEC, IIT Roorkee with support from the Ministry of New and Renewable Energy, Govt. of India and Central Water Commission under DRIP project.

      Objectives

  • Research and analysis of suspended sediment flow and its impact on hydropower components.
  • Sediment depository for Himalayan region where hydropower plants are prone to hydro-abrasive erosion
  • Research data base of hydro-abrasive erosion and its effect on components of hydropower plants-turbines, penstock etc.
  • Development of a knowledge centre to educate and train personnel to handle erosion issues effectively.

                

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    Research Areas

    The main research areas of the laboratory are as follows:

  • Design and improvement of sediment settling basins
  • Sediment flow dynamics
  • Validation and development of sediment flow simulations
  • Relation of sediment parameters with hydro-abrasive erosion
  • Effect of hydro-abrasive erosion on efficiency reduction
  • Development of methods for quantifying suspended sediment
  • Designing turbine blades and other components for less erosion

    Short term activities:

  • Identification of hydro-abrasive erosion affected hydropower plants in India.
  • Collection of suspended sediment samples from hydro-abrasive erosion affected hydropower plants for laboratory analysis in AHEC, IIT Roorkee.
  • Continuous measurement of suspended sediment properties at hydro-abrasive erosion affected hydropower plants.
  • Measurement of hydro-abrasive erosion in hydropower plants.
  • Measurement of efficiency loss due to hydro-abrasive erosion in hydropower plants.
  • Suspended sediment measurement before and after desilting tank to measure desilting efficiency at a plant.
  • Sediment measurement in river reaches with potential of hydropower development to assess the erosive potential and its future implications.

    Long term activities:

  • Establishing a sediment laboratory with modern instrumentation for research and analysis of suspended sediment flow and its impact on hydropower components.
  • Sediment depository for Himalayan region where hydropower plants are prone to hydro-abrasive erosion-It will benefit both existing and upcoming plants.
  • Research data base of erosion and its effect on components of hydropower plants-turbines, penstock etc.
  • Development of a knowledge center to educate and train personnel to handle erosion issues effectively.
  • As power plants in Himalayan region observe heavy loss of energy due to reduction in generation and increasing cost towards replacement and maintenance, such information center will be a major step to mitigate erosion.
  • Users of the outcome study shall be hydropower developers and manufacturers.

   Hydro-abrasive Erosion Test Rig

   To develop hydro-abrasive erosion models and test various material/coatings, a Pelton turbine test rig is available along with a stirrer for well mixing of sediments. The Pelton wheel is detachable feature for ease of dismantling the buckets to measure erosion and fixing disks are used for reassembly of buckets in well reproductive manner. The model Pelton turbine has 6 different materials namely 13Cr-4Ni, 16Cr-5Ni, 16Cr-4Ni martensitic steel, bronze, 13Cr-4Ni with plasma sprayed Cr2O3coating and 13Cr-4Ni with WC-Co-Cr HVOF coating.

   A set of Pelton buckets for different material sponsored by Andritz Hydro for erosion testing.

    Facilities

  Online Laser Diffraction Sediment Sensor (LISST-Infinite)
Make: Sequoia, USA
Measuring parameters: Sediment size and concentration continuously
Specification: PSD: 32 log-spaced size classes, 2.5 to 500 µm size range, SSC: Up to 30,000 ppm (mg/l)
 
         
  Online multi-frequency acoustic sensor (Both AQUASCAT 1000R& AQUASCAT 1000S Models)
Make: Aquatek, UK
Measuring parameters: Sediment size and concentration continuously
Specification: PSD: 20 μm to 500 μm SSC: 0.01 g/l to 20 g/l over 1 m
 
         
  Portable Online Turbidity and suspended solids Sensor (Solitax)
Make: Hach, USA
Measuring parameters: Turbidity and suspended sediment concentration continuously
Specification: (0.001 to 4000) NTU, 0.001 mg/L to 50 g/L)
 
         
  Online Turbidity and Suspended Solids Sensor for use in Open Channels (VisoTurb 700 IQ)
Make: Xylem (YSI), USA
Measuring parameters: Turbidity and Total Suspended Solids (TSS)
Specification: Turbidity: Upto 4000 NTU/FNU
TSS: Up to 400 g/L
 
       

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  Sediment Size and Shape Analyser (Camsizer)
Make: Retsch Technology GmbH, Germany
Measuring parameters: Sediment size and shape distributions
Specification: PSD: 0 to 3000 μm
Shape: Aspect ratio, roundness etc.
 
         
  3D Scanner system tripod based (COMET L3D) - Camera, Positioning System, Additional Field of View, Geomagic Design X Software
Make: Carl Zeiss Optotechnik GmbH, Germany
Measuring parameters: 3D Scanning of turbine and other plant components for erosion and analysis of scanned components
Specification: Recommended part size range: 0.1 to 4 m
Accuracy: 20 μm
 
         
  Portable Hand Held 3D Scanner (HandySCAN 700)
Make: Creaform Inc., Canada
Measuring parameters: Erosion in turbine and other plant components
Specification: Resolution: 50 μm
Recommended part size range: 0.1 to 4 m
 
         
  Surface Roughness Tester (SurfTest SJ-411)
Make: Mitutoyo Pvt. Ltd., Japan
Measuring parameters: Surface roughness, Effect of erosion in turbine and other plant components
Specification: Measuring range: X-axis 25 mm, Z-axis 800 μm, Resolution: 0.000125 μm
 
         
  Sieve Analyser (Analysette 3 Pro)
Make: Fritsch GmbH, Germany
Measuring parameters: Sediment size analysis
Specification: Both dry and wet sieving
Precision sieves: 20 μm to 1 mm
 
         
  Portable Laser Diffraction Sediment Sensor (LISST-Portable XR)
Make: Sequoia, USA
Measuring parameters: Sediment size distribution and concentration
Specification: PSD: 0.34 to 500 µm size range in 44 log-spaced size classes
SSC: 30 to 1,900 mg/l
 
         
  Portable Laser Diffraction Sediment Sensor (LISST-Portable)
Make: Sequoia, USA
Measuring parameters: Sediment size and concentration
Specification: PSD: 32 log-spaced size classes, 1.25 to 250 µm size range
SSC: Up to 5,000 ppm (mg/l)
 

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    Publications

  • Rai A.K., Kumar A. (2018). Measurements and financial analysis for Hydro-abrasive erosion in hydropower plants. International Association For Small Hydro (IASH) Journal, Vol. 7 No. 1 (January) p. 3-10
  • Rai A.K., Kumar A. (2017). Sediment monitoring for hydro-abrasive erosion: A field study from Himalayas, India. International Journal of Fluid Machinery and Systems, Vol. 10 No. 2 (April-June) p. 146-153 http://doi.org/10.5293/IJFMS.2017.10.2.146
  • Rai A.K., Kumar A., Staubli T. (2017). Hydro-abrasive erosion in Pelton buckets: Classification and field study. Wear, Vol. 392–393, pp. 8-20 https://doi.org/10.1016/j.wear.2017.08.016
  • Rai A.K., Kumar A. (2016). Analyzing hydro abrasive erosion in Kaplan turbine: A case study from India. Journal of Hydrodynamics, Ser. B. - Journal – Elsevier, 28(5) pp. 863-872 10.1016/S1001-6058(16)60687-X
  • Rai A.K., Kumar A., Staubli T. (2016). Study on flow inside a Pelton bucket and similarity laws for erosion" 28th IAHR Symposium on Hydraulic Machinery and Systems – July 4-8, 2016 at Grenoble, France, (pp – 917 – 926). Published in IOP Conf. Series: Earth and Environmental Science 49 (2016) 122002.
  • Rai A. K., Kumar A., Hies T., Nguyen H. H. (2016). Field application of a multi-frequency acoustic instrument to monitor sediment for silt erosion study in Pelton turbine in Himalayan region, India” 28th IAHR Symposium on Hydraulic Machinery and Systems – July 4-8, 2016 at Grenoble, France, (pp – 1037 – 1046). Published in IOP Conf. Series: Earth and Environmental Science 49 (2016) 122004.
  • Rai A.K., Kumar A., Staubli T. (2015). Developing a test rig to measure hydro-abrasive erosion in Pelton turbine. International Conference on Hydropower for Sustainable Development (ICHSD-2015), Feb 05-07, 2015, Dehradun, India.
  • Rai A.K., Kumar A. (2015). Continuous measurement of suspended sediment concentration: Technological advancement and future outlook. Measurement 76 pp. 209–227. http://dx.doi.org/10.1016/j.measurement.2015.08.013
  • Rai A.K., Kumar A., Staubli T. (2014). An innovative approach to measure hydro-abrasive erosion in Pelton turbine. International Conference on Environment and Energy (ICEE-2014) - December 15-17, 2014 at Hyderabad, India.

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    People

  • Head of Laboratory
      Prof Arun Kumar                                                                                  
  • Research Fellows
  Anant Kumar Rai
Project Fellow
Specialization: Hydro-abrasive erosion, Sediment and flow measurements
E-mail : anantkrai@gmail.com
     
  Naman Arora
Research Associate
Specialization: Hydraulic structures, SHP Planning and Design, Sediment and flow measurements
E-mail : namana649@gmail.com

      Your suggestions, data and possible utilization of facilities by you are solicited.

Prof Arun Kumar
Professor
Alternate Hydro Energy Centre,
Indian Institute of Technology Roorkee,
Roorkee-247667, Uttarakhand,
Phone : Off.(+91 1332) 285821
Fax : (+91 1332) 273517, 273560
E-mail : aheciitr.ak@gmail.com, akumafah@iitr.ac.in

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