Skema - MV & LV Switchgear

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KARACHAGANAK PROJECT

SITE: KAZAKHSTAN
The Karachaganak field, located onshore in western Kazakhstan, was discovered in 1979 and is one of the largest gas condensate fields in the world.
Covering an area of 280km2 and holding over 1.2 bilions tons of oil and condesate and 1.35 trillion m3 of gas, the giant Karachaganak field currently producs an average of 150,000 barrels of condesate and 20 million m3 of gas per day.

Project Management Consultant
JV Becthel Ltd and Snamprogetti UK

End user
Karachaganak Petroleum Operating B.V. (KPO),
a consortium of:

SOLUTIONS DELIVERED
On behalf of the Bechtel Ltd/Snamprogetti UK joint-venture (which was in charge of engineering and procurement for the Karachaganak project), Skema was responsible for supplying a series of packaged MV/LV substations and electrical switchboards, consisting of both power centers and motor control centers.
In detail:
• Nine packaged substations, complete with MV switchboards, transformers, 400V switchboards/motor control centers, battery and battery charger, distribution boards, HVAC system, fire and safety and the lighting system. • LV switchgears and motor control centers.
Skema supplied 20 switchboards, more than 250 panels and 1300 motor starters.
Key features of Skema's "intelligent" MCC are its withdrawble units and incomers equipped with microprocessor relays.
In addition Skema also developed the Electrical Control System for the Karachaganak project in KPC and Unit 2. Each station is equipped with an RTU (Remote Terminal Unit), which collects data from the switchboards and interfaces with DMS and DCS. The accumulated data is then made available for visualisation on EWS and on plan DMS.
Skema has supplied a total of nine packaged substations for Early Works, two 6kV packaged substations for Unit 3, a packaged substation for a Flash gas compressor control room, and a series of seven packaged substations for a Waste Management Complex.

As for the switchboards, Skema supplied the Karachaganak project alone with some 500 LV panels, 100 MV panels and more than 2300 drawers.

"Skema provided an excellent service in assisting with the commissioning of their supplied equipment on site here in Karachaganak.
I can say that the work completed was carried out in a timely manner, to high standards, often in arduous conditions.
The control and monitoring software package has more than met the design brief providing a user friendly monitoring and control option for the switchboards and electrical networks.
The working relationship that developed with Skema personnel was escellent, as they were always prepared to go the extra mile to resolve any anomaly that arose on site and meet the client's expectations".
Electrical Commissioning Engineer, KPO

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