Yokogawa enhances ProSafe-RS for fire and gas checks

Yokogawa Electric will release an enhanced version of the ProSafe-RS safety instrumented system. The latest release, R4.03.00, includes an improved engineering function for configuring fire and gas systems (FGS) and new operation faceplates for the FGS operation and monitoring screens. These enhancements make it easier to adopt and use ProSafe-RS in FGS applications, says Yokogawa.

In the oil, natural gas, petrochemical, chemical, and other energy and basic materials industries, safety measures must be taken to prevent accidents and protect the environment. This includes the use of a safety instrumented system, which can secure plant safety by functioning as an emergency shutdown system (ESD) that detects abnormal conditions and safely initiates emergency shutdowns, and by functioning as an FGS.

Yokogawa’s ProSafe-RS safety instrumented system can be integrated with the Centum VP integrated production control system and is used mainly in ESD applications around the world.

In response to the rising need for FGS, the R4.03.00 ProSafe-RS release includes features that make it easier to adopt and use this system in FGS applications. By adding a new I/O module and enabling the use of an alternate control network topology, Yokogawa gives customers a greater range of choices in ESD and FGS applications. Cybersecurity has also been strengthened, adds Yokogawa.

Software components (function blocks) that define the operations and functions to be performed when smoke, heat, and/or gas is detected, is an essential aspect of any FGS application. These have been added to the ProSafe-RS engineering functions. Standard FGS faceplates have been added for the integrated display of smoke, heat, and gas detector information such as gas concentration level and device status.

A new function in the I/O module can reset the detector that sends smoke and heat detection signals to the ProSafe-RS system. This eliminates the need for a reset circuit to restore communications after an abnormality is detected, reducing both the size of the hardware and its initial cost. With these enhancements, the ProSafe-RS is easier to adopt and use in FGS applications, says Yokogawa.

Yokogawa provides an N-IO (Network-IO) I/O device with channels that can be configured by software to handle either analogue or digital signals. As most safety instrumented systems rely mainly on digital I/O signals, Yokogawa’s newest I/O module is used for only the input or output of digital signals. This module reduces the total cost of ownership for users, says Yokogawa.

For the Vnet/IP real-time control bus, ProSafe-RS relies on the star network topology, in which all devices are connected to a central hub. Vnet/IP is a control network developed by Yokogawa that features high reliability and quick response. Vnet/IP complies with the IEC61784-2 international standard. The ProSafe-RS is also compatible with the ring topology, in which devices are connected to each other in the shape of a ring. This offers customers greater flexibility when configuring their systems.

Enhancements to the ProSafe-RS engineering station’s software security functions and changes to the Windows security settings, allows to set their systems to a higher security level. The R4.03.00 ProSafe-RS release also supports a Windows function that enables the centralised management of security settings. Users can apply the same security settings to multiple monitoring and operation PCs, to improve plant security.

As well as ESD and FGS systems, the ProSafe-RS is designed for burner management systems (BMS) in process industries such as oil, natural gas, petrochemicals, chemicals, pharmaceuticals, electric power, and iron and steel

The ProSafe-RS safety instrumented system detects abnormal conditions in plant operations and initiating emergency actions such as a plant shutdown. It conforms to the IEC61508 international safety standard and can be used in SIL3applications.



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