Engineering Capabilities

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	Engineering Capabilities

Yokogawa has experience in more than 150 third party system migration projects. Yokogawa can serve as the main contractor, providing a turnkey legacy system migration solution.

Requirements of migration projects

	- Time-critical
	- Minimize plant downtime while maintaining safety
	- Minimize reinvestment in plant assets

Yokogawa’s approach

Up-front Risk Management

To ensure accuracy, the I/O list generated from the loop drawings is cross-checked with the following:

• P&ID
• Marshalling drawings
• Database downloaded from the existing DCS system
• Junction box drawings
• Cable schedule

A strong relationship based on mutual trust and respect is essential for dealing with any critical issues that are identified. The identification activities are carried out before/during/after the shutdown period. Critical cutover tasks are prepared, approved, and carried out together with the customer.

Hot Cutover / Cold Cutover

Yokogawa can effectively handle both hot and cold cutovers. For instance, a legacy system migration project including a central control room (CCR) renovation for a customer in the Middle East was accomplished in just 9 days. Originally 14 days had been scheduled for the shutdown. In addition to the 5 days that were saved through well-managed cutover work, 3 days were saved during the plant start-up phase. The completion of this project 8 days sooner than scheduled saved the customer US$6.7 million.

Conversion Tool for Legacy System Engineering Data

Software engineering information (e.g. tag numbers, units, ranges, comments, control schemes, alarm settings, tuning parameters, etc.) can be downloaded from an existing DCS system. The downloaded information can be then fed to the CENTUM CS 3000 using a conversion tool, saving considerable time and ensuring a reliable result.

Migration Engineering Workflow