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Special pumps for Norwegian shipbuilder's new FPSO

A Netzsch Pumps product story
Edited by the Engineeringtalk editorial team Oct 16, 2000

Three specially designed progressing cavity pumps are being used for liquid boosting duty on Crystal Ocean, a Floating Production Storage and Offloading Facility being built by Brovig Offshore

Three specially designed Netzsch Nemo progressing cavity pumps are being used for liquid boosting duty on Crystal Ocean, a Floating Production Storage and Offloading Facility (FPSO) being built by Norwegian shipbuilder Brovig Offshore ASA.

The FPSO will be used world-wide as part of Brovig's exploration and production activities, travelling between oilfields during the preliminary stages of exploration to assess production potential and ultimately being used for 'life-of-field' production.

The pumps were specified by Kvaerner Process Systems Limited, who are designing and fabricating a separation and produced water process module for the FPSO.

Their specification included an unusual pump duty that requires the liquid booster pumps to withstand static pressures up to 92 bar g with a working pressure of only 5 bar g.

To meet the specification Netzsch Nemo designed a special pump housing and fitted a double-tandem mechanical seal with a dry running back seal.

As the Crystal Ocean was a fast track construction project, the ability of Netzsch Nemo to produce the three special pumps and maintain the same delivery schedule as standard pumps, won them the contract and a further order for two LP flare liquid booster pumps.

The liquid booster pumps have a capacity of 12.5 - 125m3/hr and will be pumping an oil/water mixture with CO2 and H2S.

The two LP flare liquid return pumps have a capacity of 10m3/hr and will be pumping a condensate/saline water mixture with CO2 and H2S.

They are fitted with single cartridge seals and pump housings designed to withstand pressures of 15 bar g.

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