Entire model was transported to Entire model was transported to HT R&D Laboratory in Roorkee. The model assembly was completed at early in August 2023. Laboratory in Roorkee. The model assembly was completed at early in August 2023.

Model Test
A homologous model acceptance test as per IEC 60193 was conducted to verify the hydraulic performance guarantees.
The main hydraulic performance characteristics in regards of efficiency, power output, cavitation and runaway speed have been tested preliminary. The tests were performed during the period of August-September 2023. KSBEL attended the witnessed part of the model test performed on the second week of September 2023. All test results were compiled in a final report. Additional measurements in accordance with the model test procedure, such as wicket gate torque, were completed in sequence and the test report was provided to Customer for approval.

Observations and Conclusions
After the completion of model test for Chinnar SHEP, the hydraulic design validation was done based on the observation that:

• A witnessed model test has been performed where hydraulic efficiency, power output, runaway speed and cavitation performance have been compared with the guaranteed values given in the contract.
• The results showed that the power and efficiency at each guaranteed point and the guaranteed weighted average efficiency was fulfilled.
• The results also showed that the maximum measured steady state runaway speed is lower than the guaranteed value.
• Considering that the prototype turbine is manufactured to the designer’s high-quality standards and based on model geometry, and that the turbine operates strictly within the design operating range, the cavitation observed during the tests would not exceed the guaranteed value.
• KSEBL accepted the model test results and approved for further manufacturing of the prototype turbine.