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Yokogawa Releases Enhanced Version of ProSafe-RS Safety Instrumented System - Ensuring safe operation of plants and upstream oil and natural gas facilities -
Yokogawa Releases Enhanced Version of ProSafe-RS Safety Instrumented System


NewswireToday - /newswire/ - Tokyo, Japan, 2012/11/28 - Ensuring safe operation of plants and upstream oil and natural gas facilities -

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Yokogawa Electric Corporation announces that it will release the enhanced ProSafe-RS safety instrumented system on November 28. This new version, ProSafe-RS R3.02.00, features input/output modules that will operate reliably in the high-temperature conditions typically encountered in desert locations. Support of an open communications protocol has also been added, enhancing ProSafe-RS's compatibility with other vendors' distributed control systems (DCS).

Development Background
In the oil, natural gas, petrochemical, iron & steel, and other energy and basic materials industries, it is becoming increasingly important to ensure the safety of plant operations to prevent accidents, protect the environment, and be good corporate citizens. Accordingly, there is a growing demand for safety instrumented systems that can detect abnormal conditions and safely initiate emergency shutdowns.

Control devices and safety instrumentation systems are often installed outdoors for monitoring oil and gas wells and pipelines. As many of these facilities are in desert locations, they must be able to operate in high-temperature conditions.

In addition, plant operators who replace their safety instrumentation systems to improve productivity and safety need to maintain compatibility with their existing distributed control systems.

To satisfy these needs for high-temperature resistance and inter-system compatibility, Yokogawa has developed this enhanced version of the ProSafe-RS safety instrumented system.

Overview of Enhancements

1. High temperature resistant input/output modules
High temperature resistant digital and analog input/output modules have been developed. Previously, input/output modules had to be spaced far apart to prevent the accumulation of heat. While mounted closely together, the new modules can operate at ambient temperatures up to 70°C(158°F). This reduces the system footprint.

2. Modbus/TCP protocol*1 support
Safety instrumented systems and distributed control systems are not always replaced at the same time. Therefore, ProSafe-RS has been enhanced by adding support for Ethernet-based Modbus/TCP communications with other systems. This facilitates the flexible connection of the ProSafe-RS system with distributed control systems from other vendors, allowing our customers a greater range of choice.

Takashi Nishijima, a Director and Senior Vice President, and Head of the Industrial Automation Platform Business Headquarters, comments,"The latest version of ProSafe-RS was developed to achieve safety excellence at our customers' production sites, which is one of the aims of our VigilantPlant solutions .Safety is the most important consideration in plant operations. With this new version, ProSafe-RS is now capable of ensuring under high-temperature conditions that our customers' systems work precisely and safely. The tighter connection not only with CENTUM systems but also other vendors’ systems makes it easier for companies to adopt our highly reliable safety instrumented system. We will continue our efforts to develop products that support our customers' plant operations."

Major Target Markets and Applications
Emergency plant shutdown and fire prevention/fighting in the oil, natural gas, petrochemical, and other process industries.

About ProSafe-RS
Released in February 2005, the ProSafe-RS safety instrumented system helps prevent accidents by detecting abnormal conditions in plant operations and initiating emergency actions such as plant shutdown. Unlike conventional safety instrumented systems and distributed control systems, which are regarded as having different roles and functions and operate separately, the operation of ProSafe-RS and the CENTUM series can be fully integrated. An independent certification body has certified that ProSafe-RS conforms to the IEC61508 international safety standard and can be used in SIL3*2 applications. As a result, ProSafe-RS is highly regarded by users and has been installed in more than 1,000 projects worldwide since its release. Yokogawa will continue strengthening the functions of ProSafe-RS to satisfy customer needs for safety instrumentation.

*1 An industrial communications protocol developed by the U.S. company Modicon (now owned by Schneider Electric).
*2 A standard relating to the functional safety of electrical and electronic equipment that was established by the International Electrotechnical Commission (IEC). Safety integrity levels (SIL) are defined by the IEC61508. At SIL3, the risk factor for a plant where safety measures are not in place has been reduced to a range from 1/1000 to 1/10000.

The names of companies and products in this text are registered trademarks or trademarks of the respective companies.

About Yokogawa
Yokogawa's global network of 90 companies spans 55 countries. Founded in 1915, the US$4 billion company conducts cutting-edge research and innovation. Yokogawa ( is engaged in the industrial automation and control (IA), test and measurement, and other businesses segments. The IA segment plays a vital role in a wide range of industries including oil, chemicals, natural gas, power, iron and steel, pulp and paper, pharmaceuticals, and food.

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Yokogawa Releases Enhanced Version of ProSafe-RS Safety Instrumented System

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