2. News / Pare HEP commences commercial operations

Pare HEP commences commercial operations

May 28, 2018: The Pare Hydro Power Project has successfully achieved commercial operations of both the units in May 2018. The first unit has commenced its commercial operations on May 21, 2018, and subsequently, the 2nd unit achieved commercial operation on May 28, 2018. Though the project has commenced commercial operations, the official inauguration will be decided at a later date by NEEPCO.

The Pare Hydro Power project is a run-of-the-river scheme on the river Dikrong, a tributary of the river Brahmaputra. The project has a capacity of 110 MW and it consists of two units of 55 MW and utilize tailrace discharge of the 405 MW Ranganadi Stage-I project. It is expected that it will generate 506.42 million units of power in a 90% dependable year.

The geographical condition of the river makes it one of the most compact hydropower projects in India. The river is in a horseshoe shape from the dam to the powerhouse which makes the Headrace tunnel one of the shortest with the length of just 2.8 km. However, the discharge of the river is quite high to the extent of maximum flood levels of 5000 cumecs. Hence the HRT has a large diameter of 7.5 M to generate enough head for power generation. The entire project from the dam to the powerhouse has been set-up within a distance of 3 km. Compactness of the size makes it one of the most economical projects in the country.

The remote location of the project, poor accessibility, and unpredictable hydrology posed numerous hurdles in the construction of the project. The lead time of the delivery of major materials like steel, cement to batching plant and site location was unpredictable due to landslides and poor road conditions resulting in vehicles halting at several locations before reaching the site. To adequately cover the risk of flooding, the original design of the cofferdam on the upstream side has been modified from rock-fill to concrete cofferdam and the height of the cofferdam has also been increased from 6.5 m to 12.5 m. Despite this, it was overtopped six times in different seasons.

Maintaining just-in-time inventory was a huge challenge as even for smaller items the nearest suppliers in Guwahati and Siliguri were around 340 km and 730 km away respectively. Few special materials had to be procured even from as far as Mumbai and Goa which required even longer lead time. Rigorous planning and advance material management systems along with round the clock supervision made it possible to keep the required inventories and work was never interrupted for want of material.

Poor geology prompted to introduce additional feature of the cut-off wall was introduced. The bedrock condition of the dam foundation was very poor. Hence, additional reinforcement has been used to strengthen the foundation that could support the weight of the entire dam.

More than technical challenges, managing and maintaining relations with the populace of the project vicinity for uninterrupted working was a bigger task at Pare HEP. The project management successfully managed it with the support of the ‘Village Elders’ and continuously motivating the team to overcome such situations passionately.

Overcoming all these challenges, HCC has successfully completed the project in May 2018.

Archive

Whoops, looks like something went wrong.

1/1 ErrorException in PhpEngine.php line 49: ob_get_clean(): failed to discard buffer of zlib output compression (0)

  1. in PhpEngine.php line 49
  2. at HandleExceptions->handleError('8', 'ob_get_clean(): failed to discard buffer of zlib output compression (0)', '/home/hccindia/public_html/vendor/laravel/framework/src/Illuminate/View/Engines/PhpEngine.php', '49', array('__path' => '/home/hccindia/public_html/storage/framework/views/cc3fe1fd9b50d0d6fd6e5cd687c34202', '__data' => array('__env' => object(Factory), 'app' => object(Application), 'errors' => object(ViewErrorBag), 'news_inner' => object(News), 'related_news_inner' => object(Collection), 'menu' => 'home'), 'obLevel' => '1', '__env' => object(Factory), 'app' => object(Application), 'errors' => object(ViewErrorBag), 'news_inner' => object(News), 'related_news_inner' => object(Collection), 'menu' => 'home', 'single_related' => object(News)))
  3. at ob_get_clean() in PhpEngine.php line 49
  4. at PhpEngine->evaluatePath('/home/hccindia/public_html/storage/framework/views/cc3fe1fd9b50d0d6fd6e5cd687c34202', array('__env' => object(Factory), 'app' => object(Application), 'errors' => object(ViewErrorBag), 'news_inner' => object(News), 'related_news_inner' => object(Collection), 'menu' => 'home')) in CompilerEngine.php line 58
  5. at CompilerEngine->get('/home/hccindia/public_html/resources/views/frontend/news/index.blade.php', array('__env' => object(Factory), 'app' => object(Application), 'errors' => object(ViewErrorBag), 'news_inner' => object(News), 'related_news_inner' => object(Collection), 'menu' => 'home')) in View.php line 135
  6. at View->getContents() in View.php line 106
  7. at View->renderContents() in View.php line 80
  8. at View->render() in Response.php line 51
  9. at Response->setContent(object(View)) in Response.php line 198
  10. at Response->__construct(object(View)) in Router.php line 1233
  11. at Router->prepareResponse(object(Request), object(View)) in ControllerDispatcher.php line 113
  12. at ControllerDispatcher->Illuminate\Routing\{closure}(object(Request))
  13. at call_user_func(object(Closure), object(Request)) in Pipeline.php line 139
  14. at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
  15. at call_user_func(object(Closure), object(Request)) in Pipeline.php line 103
  16. at Pipeline->then(object(Closure)) in ControllerDispatcher.php line 114
  17. at ControllerDispatcher->callWithinStack(object(HomepageFrontController), object(Route), object(Request), 'getNews') in ControllerDispatcher.php line 69
  18. at ControllerDispatcher->dispatch(object(Route), object(Request), 'App\Http\Controllers\frontend\HomepageFrontController', 'getNews') in Route.php line 203
  19. at Route->runWithCustomDispatcher(object(Request)) in Route.php line 134
  20. at Route->run(object(Request)) in Router.php line 712
  21. at Router->Illuminate\Routing\{closure}(object(Request))
  22. at call_user_func(object(Closure), object(Request)) in Pipeline.php line 139
  23. at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
  24. at call_user_func(object(Closure), object(Request)) in Pipeline.php line 103
  25. at Pipeline->then(object(Closure)) in Router.php line 714
  26. at Router->runRouteWithinStack(object(Route), object(Request)) in Router.php line 679
  27. at Router->dispatchToRoute(object(Request)) in Router.php line 639
  28. at Router->dispatch(object(Request)) in Kernel.php line 236
  29. at Kernel->Illuminate\Foundation\Http\{closure}(object(Request))
  30. at call_user_func(object(Closure), object(Request)) in Pipeline.php line 139
  31. at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in VerifyCsrfToken.php line 50
  32. at VerifyCsrfToken->handle(object(Request), object(Closure))
  33. at call_user_func_array(array(object(VerifyCsrfToken), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124
  34. at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in ShareErrorsFromSession.php line 49
  35. at ShareErrorsFromSession->handle(object(Request), object(Closure))
  36. at call_user_func_array(array(object(ShareErrorsFromSession), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124
  37. at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in StartSession.php line 62
  38. at StartSession->handle(object(Request), object(Closure))
  39. at call_user_func_array(array(object(StartSession), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124
  40. at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in AddQueuedCookiesToResponse.php line 37
  41. at AddQueuedCookiesToResponse->handle(object(Request), object(Closure))
  42. at call_user_func_array(array(object(AddQueuedCookiesToResponse), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124
  43. at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in EncryptCookies.php line 59
  44. at EncryptCookies->handle(object(Request), object(Closure))
  45. at call_user_func_array(array(object(EncryptCookies), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124
  46. at Pipeline->Illuminate\Pipeline\{closure}(object(Request)) in CheckForMaintenanceMode.php line 42
  47. at CheckForMaintenanceMode->handle(object(Request), object(Closure))
  48. at call_user_func_array(array(object(CheckForMaintenanceMode), 'handle'), array(object(Request), object(Closure))) in Pipeline.php line 124
  49. at Pipeline->Illuminate\Pipeline\{closure}(object(Request))
  50. at call_user_func(object(Closure), object(Request)) in Pipeline.php line 103
  51. at Pipeline->then(object(Closure)) in Kernel.php line 122
  52. at Kernel->sendRequestThroughRouter(object(Request)) in Kernel.php line 87
  53. at Kernel->handle(object(Request)) in index.php line 322