Skip to Main Navigation

Tajikistan - Nurek Hydropower Rehabilitation Project : environmental assessment : Environmental and social impact assessment (English)

The development objectives of Nurek Hydropower Rehabilitation Project for Tajikistan are: (i) to restore the generation capacity of Nurek HPP through refurbishment of the generating units and the balance of the plant; (ii) to increase efficiency of the generating units through improved hydraulic design and installation of higher efficiency equipment; and (iii) to enhance the safety of the Nurek dam through rehabilitation of spillway tunnels, refurbishment of spillway gates or hoisting system, improvement of protection on permeable zone of the embankment dam above the core zone crest, measures to enhance safety against seism and hydrological risks. Some of the negative impacts and mitigation measures include: (i) fleet owners or operators should implement the manufacturer’s recommended engine maintenance programs; (ii) pollutants from the refurbishment process should not be discharged in the Vakhsh River or should be separated from the return flow to the Vakhsh River; (iii) the hazardous waste storage is separated from non-hazardous waste. Hazardous waste should be stored so as to prevent or control accidental releases to air, soil, and water resources; (iv) processes should be designed and operated to prevent, or minimize the quantities of waste generated and hazards associated with the waste generated; (v) waste should be stored so as to prevent or control accidental releases to air, soil, and water resources at the site; (vi) dismantling electrical devices in proper conditions; (vii) moving areas where the discharge of solid fragments, liquid, or gaseous emissions can reasonably be predicted (e.g. discharge of sparks from a metal cutting station, pressure relief valve discharge) away from places expected to be occupied or transited by workers or visitors; (viii) installation of guardrails at the edge of any fall hazard area; and (ix) regular maintenance of vehicles and use of manufacturer-approved parts to minimize potentially serious accidents caused by equipment malfunction or premature failure.


  • Author


  • Document Date


  • Document Type

    Environmental Assessment

  • Report Number


  • Volume No


  • Total Volume(s)


  • Country


  • Region

    Europe and Central Asia,

  • Disclosure Date


  • Disclosure Status


  • Doc Name

    Environmental and social impact assessment

  • Keywords

    protected area;convention on wetland;Convention on International Trade;health and safety risk;atmospheric air;work health and safety;Management of Natural Resources;reservoir;international agreement;environmental audit;negative environmental impact;Waste Management;law;ecological expertise;reservoir level;Water Allocation;duties of citizens;transboundary water resource;flora and fauna;access to information;access to justice;waste production;rational use;risk evaluation;environmental issue;Operational Data Store;subject to regulation;completeness of information;prevention of harm;Climate Risk Assessment;local executive;analysis of alternatives;agriculture and industry;quantity of water;allotment of land;safety of worker;burial of waste;quantity of fish;basin water;management of forest;management of state;downstream water quality;dam safety work;conservation of forest;world health organization;concentration of pollutant;conservation of biodiversity;right of individual;impact of water;allocation of water;sources of water;annual river flow;thermal power plant;regulation of activity;impact assessment study;industrial water pollution;potable water supply;enforcement of legislation;ecological information;natural environment;water use;access road;management body;state environmental;reservoir filling;Dispute Settlement;asbestos removal;wildlife species;endangered species;state policy;hazard risk;local condition;project impact;downstream flow;public health;legal person;Water Demand;human environment;reservoir management;social association;environmental agreement;hunting methods;water surface;electrical production;aquatic habitat;hunting right;water share;installed capacity;riparian state;hydraulic engineering;international cooperation;ecological requirements;wildlife product;wildlife sanctuary;Water Management;cumulative impact;noise emission;cost of energy production;national legislation;embankment dam;physical environment;national regulation;administrative framework;community evaluation;executive bodies;average inflow;ecological safety;natural habitat;operational issues;electricity production;water relation;large dam;traffic risk;natural person;living condition;work permit;free access;noise limit;surface area;ecological risk;water distribution;response plan;wild animal;governmental body;noise level;water crisis;environmental change;groundwater use;state supervision;protection requirement;national action;water bodies;free passage;water infrastructure;holding company;average water;drainage water;environmental flow;international standard;joint management;thermal output;water transport;flow chart;radioactive pollution;water flow;turbine efficiency;environmental pollution;geographical boundary;maximum emission;legal entity;hazard evaluation;legal entities;environmental environmental;power capacity;local self government;noise pollution;domestic animal;wildlife monitoring;illegal hunting;migratory route;water conservation;social component;reservoir operation;ecological tourism;housing area;alternative route;environmental context;environmental control;environmental statistics;hydropower potential;ozone layer;wild flora;regulation scheme;environmental standard;daily discharge;governmental entity;Traffic Safety;public association;fish passage;fish production;educational institution;legal ground;mitigation measure;fish species;lead concentration;zoological park;magnetic field;Cardiovascular Disease;census data;heavy-duty vehicle;exposure limit;irrigated area;recreational area;botanical garden;external stakeholder;riparian country;stakeholder engagement;reservoir water;water capacity;water level;local population;staff resource;electricity grid;environmental plan;safety condition;emergency situation;hydrological risk;project duration;sea level;waste quality;waste pollution;exposure risk;vehicle traffic;hydropower plant;storage capacity;sediment accumulation;hydraulic design;base case;nature reserve;irrigation water;regulation effect



Official version of document (may contain signatures, etc)



Tajikistan - Nurek Hydropower Rehabilitation Project : environmental assessment : Environmental and social impact assessment (English). Washington, D.C. : World Bank Group.