The Challenges and the Solutions
Total system configuration
1. Safe and steady operation
The utility plant operates non-stop throughout the year, ensuring an uninterrupted supply of steam,
water, and electricity to the main process facilities. In response to boiler master signals that are
issued in real time by the production scheduling center, the four boilers must adjust their output to
match shifts in demand for steam by the processes and the turbines that generate electricity for the
complex. With its highly reliable dual redundant CPUs and seven 9s availability, Yokogawa’s
CENTUM CS 3000 production control system maintains steady control of the boilers and ensures
that operations can continue nonstop without any major system problems.
Standard process graphics, process overview, trend, operator guidance, and alarm summary
displays are all designed with safe operation in mind, and can be accessed quickly and smoothly
by operators, giving them a comprehensive overview of operations.
2. Total integration of information
Through an OPC interface, the PetroChina Dushanzi refinery and petrochemical complex uses a
supervisory information system (SIS) as its plant information management system (PIMS). All
process data from throughout the complex are gathered by the CENTUM CS 3000 system and the
GE PLCs used in the water and ash treatment processes. Based on this process data, boiler
efficiency, coal consumption, rate of electricity generation, and many other kinds of useful data
from the boilers can be accessed by the engineers at their desks, without having to visit the central
control room. The CENTUM CS 3000 system is a very steady platform and provides a very
convenient process monitoring environment.
The integration of information allows PetroChina Dushanzi to reduce its consumption of water, coal,
and other resources. In many different performance statistics, it is ranked number one in the
PetroChina Group.
ISD-SP-R142
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