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Windy Centrica Easington protected by gas leak detectors

27 August 2008

Groveley Detection’s first GDU-01 ultrasonic gas leak detectors installed at Centrica’s Rough onshore gas terminal in Easington, Hull nearly 12 months ago - have proved 100% effective for monitoring potential gas leaks despite wind and environmental conditions at the site meaning that detection using conventional systems was impractical.

Windy Centrica Easington protected by gas leak detectors
Windy Centrica Easington protected by gas leak detectors

Centrica’s Bob Harrisson said: “The detectors are excellent and give us total confidence in that we could detect and act upon a leak within seconds - in any weather conditions, if one were to occur.
“We’ve been delighted with the level of service we have received from Groveley. As the GDU units respond instantaneously to a pressurised gas leak they are able to monitor and protect our open process areas in a way that conventional detectors can’t.”

The intrinsically safe GDU-01 detector instantly detects gas leaks operating over a wide dB range by hearing the sound generated by escaping gas at ultrasonic frequencies rather than responding to specific values of LEL or ppm. It constantly monitors areas in which industrial operations are occurring, or are likely to occur, without affecting the ability to detect dangerous gas leaks.

Groveley director Robert Bennet said: “The GDU-01 has a modified polyphenylenesulphide enclosure to ensure it is small, light and easy to install. At the same time it needs no special orientation and has a large area of coverage, as it is intrinsically safe it has no flame paths that require routine maintenance”
During commissioning the GDU-01’s analogue outputs were measured in plant operating conditions and the alarm level of each detector was adjusted to be higher than the local background noise, making them suitable for areas with differing ambient noise. Sensitivity can be tailored to suit an installation’s specific applications to avoid unwanted alarms.

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