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Gas Processing plant

Online production

4 months ahead of schedule

One tier dedicated to plant functionality 8 communication rings at process level protected via firewall

with each ring having local historian Accessed by operations, engineering and central control

Second tier provides upper level, enterprise-wide acquisition One ring for upper level with historian used as a data repository

for management staff, marketing and plant operations Management sees mimics of process displays without speed

degradation and risk to live control system Information is captured for future analysis, facilitating more

informed production and business decisions

Data for business decisions without risk to controls

Two-tiered historical data management

A plant-wide Alarm and Event server with a capacity of one million messages consolidates all messages from 17 historians at the process system level to a consolidated server

The consolidated server is public, plant-wide and secured from the control level systems

An accurate system-wide time stamping scheme provides the ability to correlate OCS process, diagnostic and Emergency Shutdown System (ESD) messages and values.

Detailed analysis of events from separate systems based on synchronized timestamps enables better understanding of an anomaly and quicker resolution

Greater understanding and coordination of multiple systems

Advanced alarming for quicker start ups

Alarm frequency reports provide a tally and a hierarchical listing of alarms and their frequency.

The plant was brought online 4 months earlier than scheduled Quick identification of process

problems from the reports The ability to analyze and

promptly resolve these problems accelerated the start-up schedule

Maintenance efficiencies

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Less engineering with integrated historian solution

Consistent display formats for data are used throughout operations, engineering and management

Few engineering hours required to create special historian displays

Uniformity of presentation avoids opportunities for misinterpretation when moving from one system to another