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Gupta A.,SJVN Ltd.
International Journal of Climate Change Strategies and Management | Year: 2014

Purpose: This paper aims to review the developments in India with respect to clean development mechanism (CDM) of Kyoto Protocol to assess the achievements during first Kyoto Protocol period (2008-2012) in climate change mitigation and suggest measure for better participation during the second commitment period. The paper further makes an attempt to explore the experience, concerns and expectations of the Indian project proponents of green projects registered with CDM Executive Board. Design/methodology/approach: This paper employs two methods: informal interviews with executives of World Bank, Designated National Authority (DNA) of India for CDM, leading international CDM consulting firms and a questionnaire survey of Indian CDM projects proponents. Findings: During first commitment period valid up to December 31, 2012, India remained active participant in the CDM, the only mechanism of Kyoto Protocol where developing countries can participate and join in mitigation of climate change, through the development of green projects and thereby earning additional revenue in terms of carbon finance by sale of carbon credits. The study finds out that in the global CDM experience, India's role is striking with its second highest share both in terms of number of projects registered worldwide and in generation of Certified Emission Reductions (CERs). Originality/value: This paper provides several recommendations for strengthening the institutional frame work in India with respect to CDM as well as suggestions to policy makers for consideration while charting out future policies and programs addressing climate change mitigation and adaptation oriented towards better participation in climate change mitigation during the second commitment period of Kyoto Protocol. © Emerald Group Publishing Limited.

Misra R.N.,SJVN Ltd. | Nakhasi D.,SJVN Ltd.
Water and Energy International | Year: 2013

India is one of few countries of the World which started hydro power development about a century ago almost simultaneously with the developed countries of the World. From a Hydro: Thermal mix of 45: 55 during late sixties, it has today landed to mind boggling proportion of 25: 75. Had we managed it at just reverse proportion of 75: 25 the average cost of generation would have been much less and there would have been no peaking shortage under the same MW installed under the same investment. China one hand has become second largest economy after US leaving behind India & Japan reaching largest hydro installed capacity in the world (2,20,000 MW) after commissioning world's largest hydro plant - three gorges (22,500 MW). Brazil on the other hand has surpassed a developed country like Canada in terms of GDP (2.31 against 1.39 trillion USD) not by higher installed power capacity (only116 against 130 thousand MW in Canada) but by a higher Hydro content (84% against 61%). Further pumped storage schemes are now becoming more & more relevant with continuous peaking power deficits of 13% (in some parts running to 30%) and solar & wind facing a major challenge of its utilization 24x7.With the present rate of consumption, world is left with app. 200 yrs. of Coal, 75 yrs. of Nuclear resources, 50 yrs. of gas & 25 years of oil whereas hydropower is perennial sources of energy with least carbon foot prints. The paper discusses the various constraints and challenges facing the development of hydropower in India like lack of infrastructure facilities construction Power, land acquisition, Power evacuation infrastructure, Lack of trained & skilled manpower, silt problems, geological issues, natural hazards, lack of hydrological data, poor contract management, & inadequate investigations & mismatch between policies of Centre & State. In order to overcome these problems, various suggestions have also been given.

SJVN Limited successfully commissioned its Rampur HEP (412 MW) in 2014. The project has been planned to operate in tandem by directly utilizing the Tail Water of SJVN's prestigious Nathpa Jhakri Hydro Power Station 1500 MW located upstream. The initial filling of voluminous water conductor system of RHEP with 10.50 m diameter, 15 Kilometer long Head Race Tunnel, involved more than 1.5 million m3 of water. The filling operation of such a large diameter tunnel constructed in young folded Himalayas which always offer less ideal sites for tunnelling and their subsequent operations under pressurized conditions is worth sharing with tunnelling fraternity. The paper covers meticulous planning, execution, precautions taken, and performance monitoring during filling process keeping in view the fragile geology, low rock cover zones, shear zones in close vicinity of thickly inhabited areas, squeezing zones, hot water zones encountered during excavation. Copyright © (2016) by the Society for Mining, Metallurgy and Exploration. All rights reserved.

Misra R.N.,SJVN Ltd. | Nakhasi D.,SJVN Ltd. | Sharma R.K.,SJVN Ltd. | Sharma M.,SJVN Ltd.
Water and Energy International | Year: 2013

The 412 MW Rampur Hydro Electric Project is downstream extension of Nathpa Jhakri Hydro Electric project and location Shimla and Kullu district of Himachal Pradesh. The Rampur Intake structure is already constructed as part of tail race outfall structure of Nathpa Jhakri Hydro Power Station (1500 MW). From intake onwards HRT runs on left bank upto RD 484 m and crosses the Satlujriver below the river bed. The remaining part of HRT (out of total length of 15088 m) is on right bank of river Satluj. At the end of HRT there is Surge shaft of 38 m finished diameter, 155.75 m deep which is under construction. An overview of Surge shaft is shown in Photo 1.

Chadha A.K.,SJVN Ltd. | Chauhan R.K.,SJVN Ltd. | Singh M.P.,SJVN Ltd. | Sharma U.,SJVN Ltd.
ITA-AITES World Tunnel Congress 2016, WTC 2016 | Year: 2016

The power sector in India has an installed capacity of 267.637 GW as on March 2015. Out of this total installed capacity, the hydropower sector contributes 41,267.43 MW as renewable energy source. The development of various proposed hydropower schemes in India are primarily concentrated in mountainous regions of Himalaya and often involves underground tunnelling. Underground tunnelling of considerable magnitude is generally associated with adverse geological conditions and associated geological surprises. The main objective in case of Tunnels constructed especially for hydro projects, which carry enormous quantum of water is that, it should not leak. Moreover, the tunnels which are part of water conductor system should resist the inflow of water from the surrounding ground in order to avoid draining of natural water sources and lowering of existing groundwater levels. Lowering of water table may result in subsidence and damage to existing surface structures, loss of capacity of drinking water schemes and in some cases even catastrophic sliding of landmass. Grouting and pre-grouting in tunnels serve three different purposes i.e., Stabilization, Strengthening and sealing of the rock mass around tunnels to avoid leakage of water from tunnels. In present paper, results of grouting methodology adopted during final construction stage of RHEP (412 MW) along with the introspection of Water Pressure Tests conducted for determination of the efficacy of grouting were elaborately presented. The process, of contact and consolidation grouting which is respectively followed by water pressure tests along entire reach of HRT (15.177 Km long) were also addressed in detail. Pertaining to the results of water percolation tests (before and after consolidation grouting), it was also attempted to categorize the behaviour of different rock mass classes/ conditions in reference to different quantum of grout intake and corresponding Lugeon values. Importance of planned and dedicated successful grouting procedure adopted in hydropower project at RHEP is also emphasized.

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