Surgil ESIA Report - Volume III - EKN

“O’ZLITINEFTGAZ” PC
PFS “Surgil field complex costruction with valuable
components retrieval”
- spontaneous caused by acts of nature, fires, explosions, etc.
Level of automation provided by the project allows to operate equipment of
installations without constant presence of personnel there and to monitor performance work
from the control room.
It is provided automatic control, alarm system and emergency protection from
pressure excess in the main technological lines.
There is provided protection acting for the prevention of emergencies origin or
malfunctions. During violation of operating mode of units or auxiliary mechanisms there
can be automatic shutdown of the unit separate systems its full stop.
According to the aforesaid, the technological failures under installed technological
mode have low degree of probability.
Designed process equipment meets the requirements of service instructions, so
possibility of emergencies origin connected with mechanical failure is almost completely
excluded.
Technical-organizational failures causing emergencies are practically impossible, as
decrease or excess of processed gas volume is in limits of the installed capacity. Otherwise,
emergency stops of units occur automatically at protection acting or manually by pressing
of the emergency stop-button.
As to emergencies caused by acts of nature, particularly by earthquake they are
improbable as far as constructions are located in low-seismicity area, and buildings and
equipment are estimated taking into account possible earthquakes.
Quantitative characteristics of detrimental effect of possible emergency process are:
- volume of possible irretrievable losses (i.e. quantity of causa mortis as a
result of failure);
- volume of possible sanitary casualties (i.e. quantity of victims which require
hospitalization);
- expected frequency of failures.
The considered object concerns to category potential dangerous. Danger degree of of
sources of fire-hazardous substances is defined by their volatility. In this case, gases
concern to 4 class of danger with boiling temperature 253 о К.
The open flame, spark from blow by iron object, spark in electric devices (knife
switches, furnaces) etc, can be the reasons of ignition of explosive mixture. During
equipping of lighting it is necessary to consider possibility of gas accumulation, so, all
wiring should be in explosion-proof version or bulb-reflectors should be installed in window
or special apertures. Fire safety and explosion safety of production processes are provided
by development and realization of the fire prevention systems and explosion protection
systems.
Volume 2. Part 1. EIS Project for Surgil field construction
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