2010 pigging for corrosion control wrgc tempe

8/12/2019 2010 Pigging for Corrosion Control WRGC Tempe

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Lloyd PirtleSales Manager,

Integrity ServicesTDW Services, Inc.

Pigging for Corrosion Control& Program Development


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Bio - Lloyd Pirtle

Title: Sales Manager, Integrity Services Dept, PIPSDivisionTexas A & M Graduate, Bachelor of Science 1982Operations, Sale Management & Field Sales in thePiping Systems industry since 1986. Experience in

Exploration & Production, Transmission, GasDistribution, Water/Wastewater, Nuclear & Fossil Power,Chemical & Petrochemical & Industrial. 10 years - valvemanufacturer and 15 years - TD Williamson in variouscapacities including product and service technicalsupport as well as operations. Six of the last elevenyears as part of TDWs Pipeline Integrity Products &Services Division.


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OutlineWhat is Pipeline Pigging ?

Why Pig ?

Basics

Systems

Pipeline Contents AnalysisObjectives

Pipeline Design

OutlinePig Types

Pig Enhancements

Cleaning Options

Benefits of Line Cleaning

Waste DisposalSystem Parameters

References & Training


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What is Pipeline Pigging ?Methodology developed decades ago which

incorporates inserting a device of some type into

a pipeline segment with the intended objective

fitting into one of the following categories.

Pipeline Cleaning

Product Batching

Product Displacement

Pipeline Inspection


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Why Pig ?Cleaning

Corrosion Control - removal of undesirable materials

Improve operating efficiency - savings in pump or compressor fuel

BatchingProduct separation Fuels, crudes, etc

Slugging Operations Cleaning, Biocides, Inhibitors, etc

DisplacementCommissioning/Decommissioning

Conversions

Inspection ToolsGeometry, Metal Loss, Cracks, Mapping


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Benefits of Maintenance Pigging

a) Increases & MaintainsThroughput/Efficiency

b) Prepares Pipeline for In-LineInspection

Prevents Tool Damage

Collection of Critical Data

Reduces Project Cost

c) Removes unwanted orcorrosive materialsH2OCO 2O2Salts & AcidsRust & ScaleHydrogen SulfideBlack Powder Miscellaneous* NORMS, PCBs, other liquids,

sand, etc


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Start at the Beginning

Is the line piggable in its current condition ?

What is my objective ?

How much system pressure should be available to pig ?

How much Differential should I use ?

How much Back Pressure do I Need ?

What is the line flow ?

What is the best pig velocity in this application ?

Does the media make a difference relative to processes ?

Will temperature affect pigging effectiveness ?

What pig or pigs should I use ?

Always Ask yourself the following Questions

TDW Pi li S i


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TDW Pipeline Services

TDW Pipeline Cleaning QuestionnaireRequest-A-Quote Form Form No: PC 2/02

To help us better serve you, please complete the form and return to TDW Services. Date: January 2007

Supersedes: 1/01

Company: Date:

City: State: Country:

Phone: Fax:

Required Information

Other:

Product in Service: Gas, Oil, etc. Chemical Analysis Available: No

New Pipeline: No Existing Pipeline: No Change of Service: No

How long has the pipeline been in service ?

Project Location: Onshore: Offshore:

Pipeline Size: Pipe Length: Wall Thickness(es):

Valve Type: Number of Valves: Side Connectors:

KaliperTM Inspection Required: No Minimum Bend Radius (indicate radius & degree of bend):

Operating Temp: Operating Press: Launcher/Receiver Installed: Yes No Pipeline Profile Avail.: Yes No

Launcher Receiver Dimensions:

Total Length (Feet/Inches): Drain Line Size:

Oversize Barrel Length: Work Area Footprint:Nominal Pipe Size Length:

Kicker Line Size:

TDW Services, Inc.

Address:

Contact:

E-Mail:

Project Description:

Design Code: 31.4 31.8

Yes Yes

Yes

DOT.192 DOT.195

Max.Min.

Yes

Yes

Filling out data sheets is a critical step in the planning process andmust be thoroughly filled out if good results are expected


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The Perfect Pipeline is

Perfectly StraightPerfectly RoundA Constant Inside Diameter Smooth on the Inside Surface

Void of Internal CoatingsVoid of Weld PenetrationVoid of Chill RingsVoid of Tees/Laterals

Void of ValvesPumping a light grade oil at a speed of 3ft/second

Unfortunately, it doesnt exist


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Design ConsiderationsPipeline Dimensions Length, wt, pipe IDPipeline Materials Coatings, 70s ERW, Seamless

Bends Miters, Short or Long Radius, Factory or FieldReducers Concentric/EccentricTees Sizes, Flows, Barred/UnbarredStopple Fittings/Tees Piggable Plugs installedValves Appropriate designLaunchers/Receivers Manufactured per design specs

Pipeline Preparation


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How Often Should You Pig ?

How much Liquid (gals/bls) are you removing from a pipelinesegment ? e.g. (condensates, Glycol, water, comp oil)

How much particulate are you removing from filters on the pipelinesegment ? e.g. (sand, silt, ferrous materials, paraffin)

How corrosive is the specific pipeline segment environment ? e.g.(bacteria, water, O2)

What is the dewpoint specification in the gas stream of the pipeline

segment in question ?How much corrosion already exists in the pipeline segment ?

Always Ask yourself the following Questions


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Progressive PiggingIs the most effective pigging process

The more unknowns that exist in a pipeline segment, the lessintrusive the initial pig run should be start gently & graduate toincreasingly more aggressive pigs. Example

1) Light Foam Pigs (2# Foam)2) Foam Pig (5 to 9# Foam)3) Foam Pig with Bristles4) All Urethane Bodied Pigs5) Steel bodied Mandrel Pig W/ Blades6) Steel bodied Mandrel Pig W/ Brushes7) Train Pig W/ Cups, Discs, Blades, Brushes, Magnets, etc8) Dummy Pig w/ Magnets9) ILI Tools10) Inhibitor Pigging11) Biocide treatment


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Some Geometry Tools Can Verify Line Condition!


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Bends - Dents Valves - Ovalities Wall thickness changes - Other Tees - Misalignments Taps - Mitre Bends Girth Welds - Wrinkles/Buckles

For Example:

DetectablePipeline Features


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Pigging Products

Pig Tracking & Locating SystemsLaunchers/Receivers/Pigging SystemsClosures Threaded & Clamp RingPigs Cleaning, Dewatering, DryingMechanical/Non-Intrusive Pig Signals


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Types of Pigs


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The best choice is a pig with discs, conical cups,brushes and bypass ports

Discs are effective at pushing out solids while alsoproviding good support for the pig.

Conical cups provide excellent sealing characteristics,good support and long wear.

Spring mounted brushes provide continuous forcefulscraping for removal of rust, scale and other build-upson the pipe wall.

Bypass ports allow some of the flow to bypass throughthe pig and helps minimize solids build-up in front of thepig. Also used for slowing the speed of the pig down.

Select A Pig For Cleaning Applications


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Pipeline Cleaning ChoicesDry Mechanical Pigging

* Caution Debris can ignite on contact w/ O 2 Black PowderDifficult to remove some debris (especially fine particles)Various pigs, Tubs, Drums, Filters

Detergent Enhanced PiggingMore effective at removing solidsWater or Diesel as Base solutionWet film left behind

OfflineVirtually complete control of pig velocityCan make more pig runsCash Register off

OnlineConvenience of being On-streamIn Gas, requires separationCash Register RunningPig Velocity Control ??


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Line Cleanliness is Critical

MFL Tools are the best & most expensive cleaning pigsavailable. Sensor Lift Off will reduce the intensity of the magnetic signal and will affect data quality.

You dont want MFL Tools to be a Cleaning Pig!


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Typical results of using mechanical brushcleaning pigs for removal of black powder


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Effective results of using cleaning fluidsand brush pigs with RealSeal Cups.


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Magnetic Cleaning Pig for

Ferrous Materials

The removal of this type ofdebris is a must beforeattempting to run CorrosionInspection Pigs.

Debris such as welding rods,bolts, tools, etc., is very difficult

to remove with conventionalpigs as the pigs typically pushthese objects for some distanceand then ride over them.

Pipeline Cleaning


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Ideal for Aggressive Cleaning

Pig Train


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Ideal for pre-Inline Inspection or very Aggressive Cleaning

Dummy / Magnet Tool(Gauging Plate incorporated)


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Pigs can typically be configuredto accommodate back to backlaterals by lengthening the pigto avoid modification of the

laterals

Unique Pig Enhancements


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Bypass Ports can be

Very Effective


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Inhibitor Spray Pig


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Teamwork - Pipeline Operator working togetherto achieve success from start to finishPreparation (system preparation, cleaning,

geometry, pressures, flows, etc)Selection and execution of appropriate toolsImplement appropriate action based on findingsDocumented results

How are dependable cleaningresults achieved ?


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Summary

Many pipelines can be made piggable with readilyavailable components

System information is critical when preparing for In-Line Inspection or any other assessment method.

Pipeline Cleaning is a critical part of improvingefficiency & preventing corrosion

Tools Have Strengths & Limitations. We need to

apply the right tool for the right job.


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Training SchoolsSGA / BattelleClarion Pipeline Pigging CourseTDW Pigging SchoolNACE InternationalOklahoma University Corrosion Course


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Published ReferencesGulf Publishing CompanyPipeline Pigging TechnologyPipe Line Rules of Thumb HandbookPigging Products & Services AssociationGuide to Pigging


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Questions ?

2010 pigging for corrosion control wrgc tempe

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