Source: Bulgartransgas EAD - DVGW

Maintenance of Gas Networks
Reliability of gas supply is the property of the gas supply system to deliver the
required natural gas volume to the consumers uninterrupted, under the contract terms,
in compliance with pre-set working parameters and within a certain time frame.
The gas supply reliability rate is:
determined in the concept project;
underlying the working projects, the procurement of materials and
equipment, the implementation and control of construction works and
commissioning;
maintained in the course of the system operation and restoration during
implementation of restoration-repair works.
Bulgartransgaz EAD and Overgas Inc. subsidiaries use SCADA system.
SCADA serves to monitor the network pressure and flows, the natural gas
composition and specific burning heat, the condition of the stop and control valves,
the parameters of the devices. The data transfer is made through optic cable lines,
telephone lines, satellite and radio connectivity. SCADA uses logic modeling
programs, electronic equipment and standardization of computing networks.