Krasnodar GRES Project Volume I11 Environmental Assessment
Krasnodar GRES Project Volume I11 Environmental Assessment Krasnodar GRES Project Volume I11 Environmental Assessment
- direct impact on vegetation, forest ranges and biota caused by possible leakage of natural gas through microflaws and imperfect tightness of on-line valves; - air pollution and pollution of soil and vegetation caused by pipeline cleaning and extraction of liquid and solid pollutants from the pipeline; - air pollution. by emissions of combustion products from mechanized equipment used during pipeline operation and service; - possible soil erosion, especially on the slopes caused by imperfect soil conservation measures during filling of the trenches; - possible soil subsidence (rise) under (abovelgas pipeline due to imperfect pipeline mounting and earthwork; - direct impact on vegetation, forests, and biota by emissions of process natural gas. As a source of air pollution, natural gas can cause negative environmental impacts during operation of the gas pipeline during scheduled and accidental purging of the pipeline. To promptly shutdown the pipeline (disconnect it from the trunk line during accidental leakage of the pipeline) control valves are equipped with remote control shut-off, which minimizes emission of gas to atmosphere. Emission of natural gas to the atmosphere during cutting-in of the proposed pipeline into the existing trunk line will be determined by gas volume and pressure between point of cutting and the nearest on-line control valve. If the distance between on-line valves is 60 km and the pressure is P=5.5 MPa, the volume of the gas to be released will be 132 thousand m3 at the most ( 1.8 % of daily demand by the power plant). To expel air during commissioning of the proposed pipeline blowdown using natural gas is performed until natural gas content in gas-air mix becomes 20 %. The volume of the gas released in this case is 6.5 thousand m3 , maximum. Maximum possible leakage of gas from the proposed pipeline through microflaws and imperfections of on-line valves will be 100 thousand m3 per year (4.6 m3 per day from each kilometer of the pipeline) which will not have a significant impact on atmosphere. PAGE 5-42 \+
@ A closed system of gas treatment products collection will be provided. From gas filters gas treatment products will get to the high pressure storage tank of the reduction unit, then based on the accumulated level they are automatically released to the 10 m3 underground tank. Consequently, the treatment products are pumped to a tank car to be withdrawn to the utilization facilities. During the first year of operation liquid gas treatment products will consist mainly of water remaining in the pipeline after hydraulic testing - 85 %, mechanical substances (sand, dirt, soot, corrosion products, welding rubbish, etc.) - 5 % - 10 % and stable gas condensate - 1 - 2 %. The mentioned liquid gas treatment products will be collected during the first year of operation and will be approximately 2 tons. During the second year of operation, the amount of gas treatment products will decrease and become 0.2 m3 at the most, with lower water and mechanical substances content and greater gas condensate content (up to 20 - 30 %). During consequent years of operation, gas treatment products will consist of gas condensate only of 0.05 tons per year, which will be accumulated in an underground storage tank. @ A water supply system is not used in the gas distribution system because water is not required for technological purposes. 5.2.3.1.4 Pipeline Accidents Gas transported through the pipeline is dry, consisting of methane (90-98 %), with a negligible content of gas condensate. In the event of an unpredictable accidental pipeline break, emissions of gas to atmosphere is possible in the amounts equal to the volume of gas contained between two control valves. Transported gas is lighter than air. It will not accumulate in ground depressions but will disperse into the atmosphere. Dispersion estimates for accidental emissions reveal that even during large accidents in the gas distribution system there will be no excess methane MPC in the atmosphere at a distance of 1.5 to 2 km. A separate Gas Pipeline EIA Report has been generated by Acres International Limited for RAO Gazprom. The reader is referred to that Report for a complete review of the gas pipeline portion of the Krasnodar GRES project. PAGE 5-43
- Page 128 and 129: divided into separate massifs by th
- Page 130 and 131: a 4.5.2.1.3 Animal Kingdom The Cauc
- Page 132 and 133: the Southern slope. European minks
- Page 134 and 135: 4.6.1.3 Labor and Occupation Market
- Page 136 and 137: Total Disease of circulation organs
- Page 138 and 139: and waste with negative impacts on
- Page 140 and 141: Existing Environment Conditions Lan
- Page 142 and 143: 5.1.2.5 River Crossing by Transmiss
- Page 144 and 145: 5.2 Operation Stage Figure 5.1 is r
- Page 146 and 147: Maximum concentration of nitrogen o
- Page 148 and 149: Distance From the Power Plant, km 1
- Page 150 and 151: probability is 7.14 m3/sec and this
- Page 152 and 153: Underflooding of the power plant te
- Page 154 and 155: Water pollution at the water intake
- Page 156 and 157: Biological pollution and chemical p
- Page 158 and 159: Noise range in the engine room fall
- Page 160 and 161: Reference points 002 through 004 ar
- Page 162 and 163: use of individual noise reduction m
- Page 164 and 165: ' - European feather grass Anapa, L
- Page 166 and 167: Populated Areas Mostovskoy Pereprav
- Page 168 and 169: 1 2 3 4 5 6 7 8 9 # Table 5.1 2 Est
- Page 170 and 171: In accordance with the district Adm
- Page 172 and 173: during oil transportation. The othe
- Page 174 and 175: are then directed to an oillwater s
- Page 176 and 177: Biological reclamation - bogging an
- Page 180 and 181: 5.2.3.2 Transmission Lines 5.2.3.2.
- Page 182 and 183: 5.2.3.2.2 Impacts on Bird Migration
- Page 184 and 185: Positive lmpacts Additional facilit
- Page 186 and 187: 6.0 WORKER HEALTH AND SAFETY Health
- Page 188 and 189: In the course of practical training
- Page 190 and 191: knowledge of power generator's safe
- Page 192 and 193: @ Urgent instruction is carried out
- Page 194 and 195: - preventive maintenance of the equ
- Page 196 and 197: Governing Standard: "Regulations in
- Page 198 and 199: The Plant Substation; Fenced-off ar
- Page 200 and 201: CONTAMINANT RUSSIA CO NO2 SO2 Parti
- Page 202 and 203: urn agricultural wastes for fuel, t
- Page 204 and 205: production and the large land area
- Page 206 and 207: Interconnection to the existing tra
- Page 208 and 209: 7.6 Alternative Water Supplies and
- Page 210 and 211: 4. "Report No. 256". Krasnodar Terr
- Page 212 and 213: Target of Impact ENVIRONMENTAL Air
- Page 214 and 215: Impacts Water supply shortages due
- Page 216 and 217: Target of Impact Air Quality Surfac
- Page 218 and 219: Noise levels shall be measured at a
- Page 220 and 221: mobile sources (trucks, loaders, et
- Page 222 and 223: located 0.5 km downstream of the wa
- Page 224 and 225: @ 10.0 ENVIRONMENTAL MANAGEMENT AND
- Page 226 and 227: @ a facility. Maintenance Training
@ A closed system of gas treatment products collection will be provided. From gas<br />
filters gas treatment products will get to the high pressure storage tank of the<br />
reduction unit, then based on the accumulated level they are automatically<br />
released to the 10 m3 underground tank. Consequently, the treatment products<br />
are pumped to a tank car to be withdrawn to the utilization facilities.<br />
During the first year of operation liquid gas treatment products will consist mainly<br />
of water remaining in the pipeline after hydraulic testing - 85 %, mechanical<br />
substances (sand, dirt, soot, corrosion products, welding rubbish, etc.) - 5 % - 10<br />
% and stable gas condensate - 1 - 2 %. The mentioned liquid gas treatment<br />
products will be collected during the first year of operation and will be<br />
approximately 2 tons.<br />
During the second year of operation, the amount of gas treatment products will<br />
decrease and become 0.2 m3 at the most, with lower water and mechanical<br />
substances content and greater gas condensate content (up to 20 - 30 %).<br />
During consequent years of operation, gas treatment products will consist of gas<br />
condensate only of 0.05 tons per year, which will be accumulated in an<br />
underground storage tank.<br />
@ A water supply system is not used in the gas distribution system because water<br />
is not required for technological purposes.<br />
5.2.3.1.4 Pipeline Accidents<br />
Gas transported through the pipeline is dry, consisting of methane (90-98 %),<br />
with a negligible content of gas condensate. In the event of an unpredictable<br />
accidental pipeline break, emissions of gas to atmosphere is possible in the<br />
amounts equal to the volume of gas contained between two control valves.<br />
Transported gas is lighter than air. It will not accumulate in ground depressions<br />
but will disperse into the atmosphere. Dispersion estimates for accidental<br />
emissions reveal that even during large accidents in the gas distribution system<br />
there will be no excess methane MPC in the atmosphere at a distance of 1.5 to 2<br />
km.<br />
A separate Gas Pipeline EIA Report has been generated by Acres International<br />
Limited for RAO Gazprom. The reader is referred to that Report for a complete<br />
review of the gas pipeline portion of the <strong>Krasnodar</strong> <strong>GRES</strong> project.<br />
PAGE 5-43
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