Gas detectors ensure safe operation at Indian oil and gas terminal

Published:  15 February, 2012

100 Nimbus flameproof (Exd) detectors manufactured by Crowcan are supplied to Cairn Energy’s Mangala facility.

The hydrocarbon gas detectors have been installed at the oil and gas processing terminal in Rajasthan, India.

The Mangala processing terminal covers an area equivalent to 200 football pitches and includes oil, gas, power and water infrastructure. At an eventual length of 670 km, the pipeline will provide access to more than 75% of India's refining capacity. At the peak of construction, approximately 16,000 workers were involved: 5,000 on the pipeline and 11,000 on the processing terminal.

Supplied via Larson & Toubro, the Nimbus units are located at strategic locations throughout the facility and ensure the safety of workers and equipment by detecting elevated levels of flammable hydrocarbon gases.

 “Hydrocarbon gas detectors are required by local legislation,” commented Crowcon’s Indian distributor, Mr Kishore Degwekar of Detection Instruments Pvt: “Larsen and Toubro, our customer, purchased the Nimbus detectors as they are certified by the Indian Directorate General of Mines Safety”.

Crowcon’s Nimbus gas detectors have a 10-year proven track record and, as well as having local certification, are also ATEX and UL certified. The detector is also assessed to the globally recognised functional safety standard IEC61508 and is suitable for use as part of SIL 2 systems.

Many thousands of Nimbus detectors are installed in locations across the globe, in all climatic conditions, such as the north of Sweden with its sub-zero winters, the deserts of Qatar, where summer temperatures can exceed 50C and where sandstorms are common, and hot and very humid regions such as Malaysia.

Designed to be integrated with existing gas detection systems, Nimbus can be used in conjunction with digital communication networks (via RS-485 Modbus) or conventional 4-20mA control systems such as Crowcon’s Gasmonitor.

Rated to IP67, Nimbus functions in even the dirtiest conditions. The optics operate at up to 90% obscuration, with a dirty optics warning light activating at 75% obscuration.  An external status light indicates whether the unit is in normal function or fault, alerts users to rising gas levels, and also identifies 22 further conditions for simple diagnosis.

  • Operation Florian

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