Surgil ESIA Report - Volume III - EKN

“O’ZLITINEFTGAZ” PC
PFS “Surgil field complex costruction with valuable
components retrieval”
4.3 EXPECTED ATMOSPHERIC EMISSIONS DURING OPERATION
Atmospheric air pollution is possible under normal operating regime, during carrying
out of periodic (scheduled) works and in emergency conditions.
On the linear part the source of impact on atmospheric air can arise in the emergency
conditions only in the time of disturbance of pipeline integrity. Pipeline breaking probability
is very small; however, it is impossible to completely exclude such cases.
During operation of the new constructions intended for Surgil GCF construction and
the main gas transport, there will be additional sources of impact on atmospheric air which
are divided into two kinds:
1. Constants
- condensate aeration installation;
- torches in the CGTU, GGS areas;
- pump station of condensate on CGTU;
- fire regenerators;
- condensate warehouse:
- DEG and FAL warehouse;
- boiler house;
- gas-piston power station;
- ponds-evaporators.
2. Periodic
- torches of production wells;
- degasser, drainage tanks;
- condensate loading post.
Thus, there will be accordingly increase in volume of receipt of pollutants in
atmospheric air. Calculation of prospective volumes of emissions from the above-stated
sources was made according to RD 39.2-170-95 [2], proceeding from available design data
on volumes of processing and formation of the gaseous waste, and also by analogy with
existing technological installations.
Calculation of emissions in atmosphere is carried out for maximal gas extraction by
productivity of 3 billion m3/year, i.e. by the second variant of Surgil field construction.
CGTU area
Low pressure torch
Source of emissions will be LPF by height - 35m, diameter - 0.264m. Temperature of
mix discharge is 700°C. Torch action period is all-the-year-round, 8760 h/year.
There will ingress gases in a torch:
condensate degasses 1.2m 3 /hour by density of 1.2kg/m 3 ;
from end trap installation 491.55m 3 /hour by density of 2.02kg/m 3
from reflux separator - 1.29m 3 /hour by density of 1.163kg/m 3 ;
gas for maintenance of fire on duty 12m 3 /hour with average density 0.8kg/m 3 .
Gases weight flow on a torch will make:
В = (1.2 х 1.2 + 491.55 х 2.02 + 1.29 х 1.163 + 12 х 0.8) х 1000 : 3600 = 279.298 g/sec.
Volume 2. Part 1. EIS Project for Surgil field construction
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