Aashish Karna Email & Phone Number

Perform a Level 1 and Level 2 Fitness-For-Service Assessment on penstocks to analyze the general condition and stresses and to determine the minimum required thickness, maximum allowable working pressure and remaining life of the P4 steel penstock.Create a transient model based on the existing turbine information and penstock alignment to validate the existing transient information.Perform a transient analysis using Bentley Hammer to analyze and validate the pressure surge in the existing penstocks and the water level variation in the existing surge tower.Develop a replacement option for the penstock by running transient simulations on different alignments involving the merger of two smaller penstocks into a single, larger penstock. Develop a design for the new surge tower and conduct a sensitivity analysis based on the surge tower and orifice diameter parameters and the head losses across the orifice.Conduct transient analysis on several operating scenarios and determine the governing cases.

- Perform Level 1 and Level 2 Fitness-For-Service Assessments on penstocks to analyze the condition and to determine the minimum required thickness, maximum allowable working pressure and remaining life of steel penstocks and surge towers.- Perform transient analysis using Bentley Hammer to analyze the pressure surge in the penstock and the water level variation in the differential surge tower during a load rejection.- Perform simulations to study the effect of the head loss coefficient of the orifices in a differential surge tower.- Perform simulations to test the effect of different gate closing times to compare surge pressures and turbine overspeed for various scenarios.- Conduct load rejection tests on site to validate the transient model against load rejection data.- Validate the surge tower head loss coefficient for the orifices on the differential surge tower based on the transient data from load rejection testing.- Develop repair/replacement recommendations for penstocks and surge towers.- Prepare progress reports and detailed inspection reports- Prepare 3D models and conduct simulations in ANSYS to analyze the stress, strain and deflection of penstocks.- Design repair and replacement options for penstock refurbishment projects following ASCE and ASME standards.- Conduct simulations on new designs for validation.- Design a modular diesel powerplant to replace existing diesel generators at 3 separate locations in Yukon.- Prepare general arrangement drawings and detailed design of the powerplant.- Prepare P&IDs for the fuel system, energy recovery and heating systems, and closed loop cooling systems for the units- Develop a Design Basis Report for all mechanical systems.- Perform a Root Cause Analysis for the deformation seen in the penstocks.- Prepare a report with the findings and recommendations to restore the penstocks.- Prepare repair drawings and memorandums to support repairs on site.

Renningen, Baden-Württemberg, Germany

- Worked under Quantum Sensors group to assist with development of a highly sensitive magnetic sensor- Developed python code to automate control of pulsed laser beam and pulsed microwaves for NV-center experiments- Developed python code to automate logging of experimental data- Developed python code to automate control of linear actuators and linear stages- Designed and soldered shield for Arduino- Developed code in C to measure and record sensor data from a hydrogen fuel cell car- Conducted thorough analysis and comparison of sensor data obtained from various hydrogen sensors

Hannover Area, Germany

• Conducted experiments on thick metal sheets with high power lasers and gases to investigate factors affecting the cutting rate and quality of cut• Processed experimental data from high speed cameras and IR cameras to obtain information useful for the research• Conducted thorough analysis on past experiments and suggested improvements for further experiments• Designed multiple modifications for laser head mount using SolidWorks• Assisted with research on Laser Assisted UltraSonic Copper Wire Bonding process by conducting experiments and logging data• Analyzed images recorded on high speed cameras using OpenCV on Python to detect features and anomalies during experiment

Bachelor Of Applied Science (B.A.Sc.), Engineering Physics

Education record

Completed IGCSE, AS & A Level examinations.