www.praxair.com/industrialservices

Nitrogen Pipeline Services: Where and When You Need It

From gas supply to integrity management to cleaning – along with service design and modeling –Praxair Services, Inc. (Praxair) has the experience and track record you can rely on to supportyour new pipeline construction and ongoing maintenance needs.

Expertise You Can Count OnPraxair offers production, delivery, and pumping ofnitrogen – and can deliver a continuous supply ofhigh-purity nitrogen to you via a dedicated fleet ofmobile pumping units.

Dry, inert nitrogen is a versatile industrial tool, andPraxair’s precisely controlled mobile nitrogen pumpingservices (NPS) puts nitrogen to work in a wide rangeof applications using a variety of mobile nitrogenequipment.

We match the type of equipment to each applicationfor optimum economy and performance. Praxair candeliver nitrogen to you based on any combination ofthe following conditions:

• Flow rates to 540,000 scfh (single unit)

• Temperatures from -320° to 600°F

• Pressures to 10,000 psi

• Volumes: unlimited

Praxair equipment mobility provides nitrogen whereyou need it, whether that is on site or in locations wherenitrogen is typically unavailable, such as pipelineright-of-ways and remote valve stations and terminals.

At-A-Glance: Praxair ApplicationsDrying and Purging prevents product contamination, corrosion,and risk of explosions by removing air and residual moisture.

Blanketing protects interior pipeline walls from corrosion duringextended out-of-service periods; ideal for removing water afterhydro-testing and protecting moisture-sensitive products.

Pipeline Displacement is a one-step displacement, drying,and inerting process. Praxair can support multi-leg displace-ments over hundreds of miles while providing flow rates up to2 million standard cubic feet per hour.

Tool Propellant is used for pigging with pressurized nitrogengas as the propellant. Inline inspection tools can also be pushedthrough pipelines.

Pneumatic Pressure Testing of equipment is undertaken bysafely using air or nitrogen.

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Cleaning Service That Cuts DowntimeThe SANDJET TM service is Praxair’s in-place economical pipeline cleaningmethod that cleans to a white-metal blasted finish while drying and inertingsections up to 10 miles long. The SANDJET service uses dry, inert nitrogengas to propel cleaning particles through the line at high velocity to quicklyremove corrosion, scale and heavy deposits. The service is also effective forremoving contaminants prior to abandonment. The best part: the entire servicetakes only a few hours.

Complete Engineering Modeling, TooPraxair is your one-stop technical resource – providing detailed engineeringestimates for your pipeline displacement needs. By assessing pipeline diam-eter, requested pig speed, and elevation data, Praxair can provide hour-by-hour injection flow rate and pressure requirements. See sample report below:

Integrity Management That Keeps You OnlinePressure and Leak Testing: With SeeperTrace® recognized by customers asa sensitive and reliable test method for long distance pipelines, a leak assmall as one gallon per day can be detected without service interruption orexcavation. In fact, by adding a tracer to nitrogen, water, or process fluid, anyleak can be found quickly and located accurately. Repairs and testing can becompleted without costly delays, and can even be done while the pipeline isin service.

Helium Leak Detection: HeliTec® Praxair’s helium leak detection service,quickly locates leaks in buried pipelines by using a helium tracer in a gas(usually with nitrogen as a carrier gas) along with a sensitive helium detec-tor. By removing the process fluid from the line and pressurizing it with thetest gas, the helium detector can sense the presence of helium in the air abovethe line. A problem detected quickly is a problem solved with a reducedimpact on productivity.

© Copyright 2015, Praxair Technology, Inc.All rights reserved.

Praxair and the Flowing Airstream design, Making our planetmore productive, Sandjet, SeeperTrace, Tracer Tight and HeliTecare trademarks or registered trademarks of Praxair Technology,Inc. in the United States and other countries.

Praxair, Inc.39 Old Ridgebury RoadDanbury, CT 06810-5113USA

www.praxair.com/servicesinfo@praxair.com

Design nitrogen flow and pressure at mile posts for a safe(below MOP) and efficient displacement

TimeHours

0:000:301:001:30

• ••

52:3053:0053:3054:00

• ••

117:30118:00118:22

Milepostmiles

0.000:000:811:632:46

• ••

99:47100:47101:47102:47

• ••

229.47230.47231.22231.22

Elevationfeet

48574857488349084934• ••

4417437543334301• ••

5180516351815181

N2 Flowscfh

0599355604964610643616384

• ••

74193574193300

• ••

0000

N2 Usedmscf

00301605912

• ••

36903372733737837378

• ••

37378373783737837378

Inlet Pressurepsig5261300130013001300• ••

1300129112781265• ••

563560558558

OutletPressurepsig410220217214210• ••

220211193180• ••

527524533558

PigSpeedmph0.01.61.61.61.7• ••

2.02.02.02.0• ••

2.02.02.00.0

DischargeRatebbl/hr01193120412161227• ••

1477147714771477• ••

1477147714771477

We monitor the inlet andoutlet pressure for safety

To learn more about Praxair’s nitrogen pipeline services, visit us atwww.praxair.com/industrialservices or call us at 1-800-PRAXAIR

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Other trademarks used herein are trademarks or registeredtrademarks of their respective owners. The information containedherein is offered for use by technically qualified personnel attheir discretion and risk without warranty of any kind.10-2015 P-40-3976

Telephone:1-800-PRAXAIR (1-800-772-9247)(716) 879-4077

Fax:1-800-772-9985(716) 879-2040

Praxair Services, Inc. has the innova-tive applications and expertise tohelp you optimize your operationsand reduce downtime with extensiveservice offerings for refineries, chemi-cal plants, terminals and pipelines.Our offerings include:

• Purging and Inerting

• Accelerated Cooldown

• Inert Entry Support

• Hot Nitrogen

• Backup Hydrogen Supply

• SANDJET Cleaning

• Product Displacement

• Tool Propellant

• Drying and Purging

• Blanketing

• Pneumatic Pressure Testing

• Tracer Tight Leak Location

• SeeperTrace Leak Location

• HeliTec Leak Detection

• Specialty Services

• Temporary Gas Supply

1-800-PRAXAIR | www.praxair.com/industrialservices

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