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Prior Power Solutions’ latest design significantly brings down cost for new nitrogen pump

A new split skid design for a nitrogen unit, utilising a single cleaner engine solution, therefore offering lower capital and operational costs, has been designed and built by Prior Power Solutions.
Split skid design for a 360K Mounted LN2 Unit
Prior Power Solutions' new 360K split skid unit is cleaner, easier to operate and cheaper. Picture: Prior Power Solutions

The 360K transportable skid mounted LN2 unit, commissioned by and built for OHS, utilising Prior Power Solutions’ single engine solution, provides cleaner and lower engine emissions combined with lower running and maintenance costs.
Working closely with OHS throughout the project, the unit was manufactured to meet the requirements of DNV 2.7-1 and is classified for use in Zone II Hazardous Areas. In addition, the unit is CE marked for offshore use.

Widely recognised as a world-leading manufacturer of nitrogen pumps, Prior Power Solutions has manufactured well service equipment from its base in Great Yarmouth for 23 years.

Nitrogen units, also known as LN2 pumps, are used to suppress various gases, liquids or other dangerous elements.

Using engine power and recovered engine heat, these units vaporise and pump liquid nitrogen from a liquid nitrogen tank utilising a centrifugal boost pump to a high pressure LN2 triplex pump. High-pressure liquid nitrogen then passes through a bespoke vaporisation system to convert the high-pressure liquid to high-pressure gaseous nitrogen.

Mark Cox, engineering manager for Prior Power Solutions, said: “Nitrogen pumps typically work on the inefficiency of traditional engines producing heat as a by-product. The challenge with cleaner emission-compliant engines was to achieve the same result.”

Testing of 360K Nitrogen Pump at Prior Power Solutions croppedThe new unit is capable of pumping a maximum output flow of 6,000 SCFM at 5,000 PSI with a maximum working pressure of 10,000 PSI. Picture: Prior Power Solutons

This brand new 360K split skid LN2 unit has been designed to operate in ambient temperatures ranging from -20oC to 40oC. Soundproofed and featuring a Triplex twin-pump, the unit is capable of pumping a maximum output flow of 6,000 SCFM at 5,000 PSI with a maximum working pressure of 10,000 PSI. 

Mr Cox continued: “The nitrogen pump was designed as a split skid to reduce lifting weight for transportation.

“After rigorous successful testing at our site, the unit was delivered to the client on time and is already operating in the field.
“This is our cleanest 360K split skid unit, which not only offers ease of operation, but also employing a single engine, bringing the overall cost of the unit down.”
Sebastien Vallet, busines director at OHS – a world leader in the in the international rental of oilfield and liquid gas equipment, said: “This journey with Prior Power Solutions, conceiving and building this 360K pump, has been really exciting considering the new opportunities this pump will bring to the oil and gas market and the new services which could be achieved.”