CEA issues guidelines for hydro projects after disaster in Sikkim
India’s apex power planning body, the Central Electricity Authority, has come up with guidelines for slope stability—inclines that can withstand movement—in hydropower projects after heavy rains and glacial lake floods damaged a dam in Sikkim. “The examination of upper reaches may include study of hazards due to avalanche, GLOF, landslide hazard analysis of slopes above the reservoir rim area, among others,” it said. Along with preparation of geological maps, geo-morphological maps, rock out-crops, overburden maps and slope classification maps, CEA has also recommended use of modern techniques such as Remote Sensing & GIS technology, drone, LiDAR technology, among others to measure and monitor vulnerable zones such as glacial lakes, landslide, and avalanche prone areas. The guidelines gain significance as Himalayan states with large number of hydro power projects including Uttarakhand, Himachal Pradesh and Sikkim witnessed severe floods, landslides, along with dam damages in the past few years.
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