Wireless gas detection for Liquefied Natural Gas facility

| Environmental Testing

Wireless gas detection system
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Yokogawa has provided the wireless communications technology required for gaining a certified gas detection system at a European LNG facility.

Yokogawa Electric Corporation and GasSecure have delivered a SIL2-certified wireless gas detection system for use at a Liquefied Natural Gas (LNG) facility in Northern Europe. The two companies are now promoting the capabilities of this system to companies that have a strong interest in maintaining safe and secure operations.

Yokogawa has been developing a wide variety of ISA100 Wireless technologies and field wireless devices such as adapters that enable conventional wired devices to access wireless networks and provides them to plants and other facilities primarily in the upstream oil and gas sector. GasSecure has developed ISA100 wireless gas detectors that can detect leaks of explosive hydrocarbon gases and are certified for compliance with the ATEX directive and the IECEx Certified Equipment Scheme and installs them on offshore oil and gas drilling platforms and at tank farms, industrial plants and the like. GasSecure has already supplied a number of these products to oil and gas companies around the world.

In 2014, GasSecure and Yokogawa concluded an agreement under which the two companies jointly developed a wireless gas detection system that would meet their customers’ requirements.

This system uses GasSecure’s GS01 wireless gas detectors to measure hydrocarbon gas concentrations. Using the ISA100 Wireless communications protocol, the GS01 establishes a link with a Yokogawa YFGW510 access point and sends data to a host system via a Yokogawa YFGW410 field wireless management station. Although the GS01 uses a low-power infrared sensor and is very energy efficient, it has a very fast response time. This capability of the GS01 and the utilisation of dual redundant communications by Yokogawa’s field wireless products make them essential components for the construction of a fast and highly reliable monitoring system.

To meet its customers’ safety requirements, GasSecure has made enhancements to the GS01 to obtain SIL2 certification for this device. For its part, Yokogawa has modified the YFGW410 so that it now supports the PROFIsafe safety communication standard and has verified that both companies’ products perform and operate as specified.

In the oil & gas, chemical and other industries, safety is a paramount concern at production, storage and processing sites. Field wireless systems can be installed in difficult-to-wire locations and have lower cabling costs than wired systems. For these reasons, field wireless devices are ideal for systems that collect production information such as flow rate, pressure and temperature. And unlike other wireless technology platforms, they can be used to construct systems that perform gas detection and other safety functions and are well suited to this purpose. With the release of SIL2-certified wireless gas detection systems, Yokogawa will actively promote its field wireless equipment and systems and will expand this business.

Standards

SIL2 is one of the four safety integrity levels defined in IEC61508, a standard for the functional safety of electrical and electronic equipment that was developed by the International Electrotechnical Commission (IEC).  SIL2 certification is generally required for most field safety devices.

ISA100 Wireless is a network protocol based on the ISA100.11a wireless communication standard for industrial automation that was developed by the International Society of Automation (ISA), and the applications necessary for its implementation.  This was approved as the IEC62734 international standard by IEC in October 2014.

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