Yokogawa nets National Grid contract

London – Yokogawa UK has announced a “major” contract win from Orbital Gas Systems for pressure and temperature transmitters for use on the National Grid gas network.

The contract covers the supply of 350 EJX pressure transmitters and 80 YTA temperature transmitters for major upgrades to the UK’s National Transmission System (NTS): the high pressure part of the UK’s natural gas transmission network, consisting of more than 7400 km of pipeline operating at pressures of up to 85 bar.

National Grid awarded Orbital Gas Systems the contract for two recent projects, known as IRIS and Upgrade of High Pressure Supply Point Metering Equipment.

The IRIS project comprises upgrading the network’s remote terminal units to improve the functionality of the existing telemetry system as part of a process of continual improvement. The Metering project aims to reduce the uncertainty of flow measurement within the NTS, and to ensure compliance with new international standards.

Both projects require accurate and reliable measurements of parameters such as pressure, differential pressure and temperature, with particular emphasis on the long-term stability and repeatability of the measuring instruments.

“Measurement stability, and particularly maximising the length of time between calibrations, is a key factor in keeping operating costs down,” said Orbital. “Yokogawa were able to offer this stability - along with the required level of overall performance - as part of a package which helped us to keep both operating and capital costs within a level which suited our customer.”