Pipeline Engineering Brochure

PIPELINE ENGINEERINGApplying Science to the Art of

Pigging

Welcome to Pipeline Engineering

As the Managing Director and a major shareholder in Pipeline Engineering Iam committed to ensuring that we meet and fulfil the needs of our customers,our employees and our shareholders. To do this Pipeline Engineering willstrive to be a global leader in the field of pipeline pigging and isolation byoffering cost effective engineered and timely solutions to our customersworldwide.

To make this happen and on behalf of Pipeline Engineering, I will ensure that:

• Our employees are trained to achieve the highest standards in theindustry, as shown by our Investors in People award.

• Our representatives and agents are selected for their knowledge ofour industry and are trained in all aspects of our business.

• Our design and manufacturing processes and procedures arecontinuously improved to maximize efficiencies and minimizecosts.

• The most suitable materials are used in the provision of productsand services.

• The highest levels of quality, safety and employee relations aremaintained.

My ultimate aim is to provide a situation where our customers get the mostcost-effective solution and our agents, employees and shareholders receive afair reward for their contribution.

With this in mind I believe we can all benefit from thesuccess of Pipeline Engineering and I look forward toworking with you to achieve these goals.

W i l l y W a t s o n Managing Director


Pigging

CONTENTS1. Introduction

• ISO 9001 Certificate

2. Company Facilities

3. PE Omnithane® Polyurethane

4. Pipeline pigs Chameleon pigs Omni Pigs Multi Diameter pigs Spares Spheres Foam pigs MOP pigs Impact logger

5. Pig Traps Sphere and Barred Tees Pig handling equipment Closures Signallers

6. Isolation Low Pressure: Gas bags Gas seal stopper Hyperbaric spheres Welding pig Hi-Friction Pig Medium Pressure: Compression plugs High Pressure Grip pipe plug High pressure piggable plugs Pipeline Recovery Tools

7. Hydro Testing Equipment Flange weld tester Internal joint tester Hire Services

8. Services & Maintenance


Pigging

Company FacilitiesAs developers and manufacturers of the unique Omnithane® range of superiorpolyurethane elastomers, Pipeline Engineering (PE) can offer unrivalled performancein its range of pipeline solutions. Our range encompasses activities at every phaseof pipeline activity.

With our range of in-house specialist design facilities, afull range of pig traps, closures, signallers, tees, pigs,isolation and testing equipment can be produced. Witha manufacturing facility that includes fabrication,machine shop, polyurethane manufacture and testingfacilities, we can offer a project management packagefrom start to finish. This ensures that the individualdesign and time schedules of your project are met.

We also offer a qualified team of on-site service personnel. Not only are theycertified for offshore work, they are involved with the design, manufacture and testingof the equipment. This gives them a detailed understanding of the equipment.

In recognition of the quality demanded in the industry, PE is LRQA certified to ISO9001 and has been approved by QUASCO.


Pigging


Pigging

PIPELINE ENGINEERING CAN OFFER THE FOLLOWING SUPPORT ANDFACILITIES:

Fabrication - We are able to offer on site fabrication, welding with coded andqualified welders to ASME IX, BS 4870 & BS EN 288, metal forming andpressure test facilities.

Test Facilities - We have sufficientspace to carryout hydrotest andfunctional tests. Test loops havebeen built for Statoil, JP Kenny &TotalFinaElf. The one shownincludes 20” to 18” pipe changeand 3D bends.

Other functional tests we have carried out include the 36” Pipeline RecoveryTool. This included functional test of the onboard activation and deactivationequipment, axial load test to 400 tonne and hydrotest to 100 Barg.

Machine Shop - This incorporates computer controlled CNC machines, whichare linked to our 3D CAD system, to ensure the most cost effective & accuratemanufacturing process.

Polyurethane Manufacture – Under the sameroof we manufacture our own speciallyformulated polyurethane’s, our range ofOmnithane®. Working closely with chemicalmanufacturers we have developed polyurethanesfor use in the oil and gas industry. We also areable to offer an in-house test laboratory to ensurethe properties of every batch of Omnithane®.


Pigging

These test include:Hardness to ASTM D2240Abrasion resistance to DIN 53516Tensile Strength to BS903 Pt A”100% Modulus to BS903 Pt A2Tear Strength to DIN 53515Elongation at Break to BS903 Pt A2

This enables us to ensure that every batch of Omnithane® meets thespecifications of the individual project requirements. We also offer the onlypolyurethane computer controlled dispensing machine in the UK, used in thepigging industry.

This is a 500kg capacity dispensing machine that can hold the base chemicalsin a vacuum environment, under stringent temperature control. The dispensingmachine will ensure that the correct ratio of liquid chemicals are mixed andheld in close tolerance, to guarantee the cast polyurethane physical properties.Temperature and ratio are two of the key factors that must be controlled duringthe manufacturing process, to ensure the quality of the finished product.

Design – To back up our manufacturing facilities we have a highly skilled andexperienced team of engineers. We have an 8 strong team that use the latestin 2D and 3D CAD systems. We have 6 ECS Concerto CAD networkedcomputer systems and 3 ProEngineer stations. This system enables us tocarryout finite element analysis.


Pigging

We also offer the facility, inconjunction with TeessideUniversity, to produce acomputer-generated model ofyour pipeline. This gives theability to reproduce the linefeatures and ensure theequipment will negotiate anyfeatures that maybe present.

Quality Control - All our manufacturing and design procedures are9001:1994. Part 1 (ISO 9001) incorporates specifications for design /development, production and servicing. We are also a QUASCO membercompany.

Onsite Services - In support of our complete product range we can offer anexperienced team of on-site service engineers. These engineers are involvedin the design and manufacturing process, giving them a detailed understandingof the equipment.

Project Engineering – We have over 29 years of experience in the piggingindustry. We have an enormous amount of experience to draw upon. Ourhighly qualified engineers working together with experienced field personnelensure a precise and practical solution to even the most demanding ofrequirements. This means you can be sure the multi-product package will bedesigned, manufactured, tested, commissioned and certified from a singlesource. As we have all the disciplines required meeting your requirementsunder one roof we have full control of the production to ensure your deliveryrequirements will be met.


Pigging

PolyurethanePolyurethane Elastomers are manufactured from basic raw materials(Polyols, Isocyanates and Cross Linkers), which are supplied by theChemical Processors. They arrive as thick pastes, which have to be warmedup to melt them to liquids, before mixing them in various ratios, then castingand curing to produce the finished elastomer.

The base materials are carefully controlled by the suppliers, and arrive in acontrolled condition. At PE, the materials are then kept in controlled (heated)conditions prior to use. While good quality base materials are essential,without controlled & correct processing of these materials, the finalproperties of the materials can be poor, with no cosmetic difference.

The trouble is that, poorelastomers can lookexactly the same as perfectones.

The raw materials need to be very carefullycontrolled in all during their processing life.The melting out period and temperaturemust be carefully controlled, the mix ratiosmust be formulated according to thespecification of the raw materials, whichmay vary from batch to batch, the mouldtemperatures must be specific, and the postcuring temperature and times, again, mustbe tightly controlled.

There are also various types ofpolyurethane elastomer used in the PiggingIndustry. Pipeline Engineering call themStandard, Super and Hyper Omnithane®.The differences between them are asfollows:


Pigging

Standard Omnithane® is a good quality, polyester based, MDI Quasipolyurethane. For many years, Pipeline Engineering bought the rawmaterials from Hyperlast, and over the years have proved that, as a generalpurpose elastomer for pigging products, provided it is processed correctly,it is a quite acceptable. However, it has one major drawback in that whenrunning in dry gas lines, usually with low volumes, the pig can accelerateperiodically, creating friction and so melting of the polyurethane, sometimesfrom within the body of the elastomer. This is the result of hysterisis, andPipeline Engineering have found different methods of overcoming thisproblem. One answer is to use Hyper Omnithane®, (described below), thathas a more constant Tan Delta curve than Standard Omnithane®, and canwithstand higher temperatures. However, this option is both expensive andsometimes not necessary for the application, so PE Investigated the problemand devised a new system, with a higher Resilience (resilience being one ofthe key aspects of controlling hysterisis). Following extensive testing, thisnew material, supplied by a company with a long track record with PipelineEngineering, has been incorporated into PE's product as StandardOmnithane®. Not only is its Resilience higher, but also its Tear PropagationResistance, while other physical properties remain equal or slightly betterthan the old Hyperlast product.

Super Omnithane® takes the physicalproperties one step further, especially inTear Initiation, Tear Propagation and WearResistance. It was used on the Yachengcontract, the pigs running almost 800 kmsin a dry line, without significant wear. It isalso used in some High Differential Pigs, &dual diameter pigs due to its excellent tearresistance properties. However, it isnotoriously difficult to process by handcasting methods, and extreme care overthe whole process must be exercised toensure that the final product is tospecification. Like all polyurethane, thefinished elastomer can look perfect, cangive a shore A hardness figure withinspecification, but the other properties,unless processed correctly; can fall farshort of specification. (For more on this

subject see below).


Pigging

Hyper Omnithane® is the very best polyurethane elastomer in the marketfor pigging applications. It is a TDI, Polyester based urethane, crosslinkedwith a special Amine, to a special formulation discovered by PipelineEngineering some years ago. It has proved itself in many applications,notably in very difficult run conditions, (the Ekofisk 36” High Differential Pigs,which were sized to suit a pipe id of 915mm, but had to negotiate a reductionto 800mm, were made from Hyper Omnithane®. They were run after othermanufacturers cleaning pigs, to clean the line before the isolation train, andran about 150kms in a dry line, bringing out tons and tons of debris. This,after the other cleaning pig runs! The actual High Differential Pigs were runas a train of 3 articulated units, and held 9 barg as a train, each articulatedunit holding 3 bar).

Having said all this, there is one key point to bear in mind as mentionedbefore, the polyurethane elastomer can look and feel perfectly OK, but theONLY way to prove this fact is to run actual physical tests on the processedpolyurethane, produced for the contract. It is not good enough to rely on theChemical Manufacturers specification sheets, which give the optimumproperties of the elastomer, when processed under completely controlledconditions, which many manufacturers do not constantly replicate in theirworkshop.

CONCLUSION

Purchasers buying polyurethane elastomers are somewhat in a difficultposition they can issue a specification with the enquiry, which will be in linewith the physical properties issued by the Chemical Suppliers, but thePurchasers do not know that what they are being given is to thisspecification. A Certificate of Conformity tells them nothing.

To reiterate, the ONLY way to prove thespecification of the finished product is to runphysical tests on the elastomer actuallyproduced for the contract. Pipeline Engineeringhas the facilities in house to do this. Samples ofthe elastomer are cast at the same time as theproducts, from PE's Computer ControlledDispensing Equipment, and, following curing,are tested for properties in the laboratory. Onlywhen the tests are passed can the product bereleased. This proves that the supplied productis to specification.


Pigging

Omnithane® Data Sheet Typical ValuesProperty Specification Units Type Hardness Range

Hardness ASTM D2240 Shore A 90 85 80 75 70 65 60 55Hyper 60 60 56 52 52 45 40 35

Tensile Strength BS903 Pt A2 MPa Super 50 35Stand 34 36 36 34 28 25 25 20Hyper 6.6 4.5 4 3.6 3.6 3.1 3 2.7

100% Modulus BS903 Pt A2 MPa Super 4 2Stand 7.5 6 5 4 3 3 1.6 1.4Hyper 11 7.2 5.5 5 4.7 4.5 4.1 3.9

300% Modulus BS903 Pt A2 MPa Super 10 4Stand 15.5 12.5 10.5 85 6 6 2.5 2Hyper 700 700 800 >800 >800 >800 >800 >800

Elongation at Break BS903 Pt A2 % Super 550 600Stand 480 480 500 500 500 500 500 500Hyper 60 56 55 54 54 45 40 30

Tear Resistance DIN 53515 KN/m Super 50 45Stand 55 45 40 30 25 20 16 15Hyper 53 59 43 40 38 40 45 54

Abrasion Loss DIN 53516 mg Super 45 30Stand 55 45 40 30 30 30 35 40Hyper 22 21 20 18 15 15 12 10

70 hr @ 22°C % Super 21 15Compression Set Stand 21 18 19 17 15 15 12 10

Hyper 46 46 45 40 36 35 30 2524 hr @ 70°C % Super 46 35

Stand 40 45 45 45 45 45 45 45Hyper 30 32 32 36 38 40 40 42

Resilience ASTM D2632 % Super 40 32Stand 40 45 48 50 55 55 55 55

Notes:1. “Hyper”, “Super” and “Stand” in the “Type” column refer to Hyper Omnithane®, Super Omnithane® and Standard

Omnithane® respectively.2. All figures are approximate and are intended to show the general properties of the specified urethanes.3. Super Omnithane® is normally only available in 85 and 65° Shore A hardness. Special formulations can be made to achieve

other hardnesses on request.


Pigging

The following tests are carried out on all uncontrolled chemical batches received inaccordance with the specified standards.

1. Abrasion loss DIN 53516.2. Tensile strength BS903 A2.3. Elongation at break BS903 A2.4. Modulus at 100% BS903 A2.5. Modulus at 300% BS903 A2.6. Tear strength (nicked). DIN 53515.7. Hardness ASTM 2240.8. Rebound resilience ASTM 2632.

• The following tests are taken at random in accordance with the specified standards:

1. Compression stress/strain BS903 A4.2. Rubber to metal bond BS903 A21.3. Rubber to metal bond BS903 A40.4. Compression set BS903 A6.5. Any of the above tests at high temperature up to 25°C.

Equipment1. Infrared extensometer.2. Hecket abrasion resistance measuring machine to DIN 53515.3. Resilience meter.4. NENE 3 KN tensile test machine, computer controlled.5. Environmental chamber –60°C to +250°C.6. Shore A and D hardness meters.


Pigging

CHAMELEON PIGS

the ideal

pig range to standardise on.

Reduce your stock levels…Reduce your storage costs…Reduce your delivery times…

Due to its modular design the CHAMELEON range of pigs is ideal for an operating orcontracting company to standardise on.

By using standard CHAMELEON component parts, the user can build a variety of differenttypes of pigs to suit unique pipeline applications, thereby substantially reducing stock levels,storage costs and delivery times – important to help meet cost reduction targets in the oil &gas industry.


Pigging

With the CHAMELEON range, pigs will no longer be discarded at the end of a job but bysimple changes can be rebuilt for another application on the same pipeline or alternatively forother lines of similar dimensions. Application of the CHAMELEON pig include:• Gauging and commissioning (including dewatering and filling).• Separation and batching• Cleaning (including displacement, swabbing and line clearance)

CHAMELEON pigs are built up from the following standard components:• Cups Jetting heads• Discs Gauge plates• Spacers Springs and brushes (circular and triangular)• Seals and supports Scraper and plough blades• Bumper noses Magnets Magnets

CHAMELEON pigs are fitted with Pipeline Engineering’s superior Omnithane® polyurethanecups and discs. Omnithane® is available in three grades – Standard, Super and Hyper – eachdiffering in their strength, wear and tear resistance and resilience to suit particular pipelineapplications.

The standard CHAMELEON pig is available in sizes 14” to 60” as a multibolt pig body. AllCHAMELEON pigs are capable of negotiating 1.5D bend radius.

CHAMELEON pigs have already been successfully supplied to a wide range of operators andcontractors world-wide.


Pigging

CHAMELEON pigs can be adapted to fit a Pipeline Engineering Impact Logger, an innovativeelectronic device capable of enhancing the traditional gauging pig and locating intrusions inthe pipeline. The pigs can also be made to accommodate a range of acoustic andelectromagnetic pingers available from leading manufacturers.

For further information on the CHAMELEON range of pipeline pigs please contact thePipeline Engineering sales team or one of our international agents. Product data sheets withweights and dimensions are available on our web site at www.pipelineengineering.co.uk

Pipeline Engineering, Gatherley Road, Catterick Bridge, Richmond, North Yorkshire,UKTel: +44 (0)1748 818341 Fax: +44 (0)1748 818039 Email: [email protected]


Pigging

PE Single Bolt Uni-Directional Pigs

Batching

SS 90-4 - For use as a product interface,and for the evacuation of liquid from pipelinesof 2” to 12” diameter. Will negotiate full diametertees, ball valves. Pig sizes of 8” to 12” willnegotiate bends of 1.5D. Smaller sizes require 3D.

SF4 - PE flexible pigs have been designed foruse in multi-bend pipelines, primarily for separationand batching. With all external parts made frompolyurethane they are highly suitable for use ininternally coated pipelines. Will negotiate fulldiameter tees and ball valves. All pigs will negotiatebends of 1.5D. Sizes range from 2” to 12”

Gauging

SG-2 - For pre-commissioning of pipelines toensure there is no excessive weld penetrationand for the removal of construction debris fromthe pipeline. Will negotiate full diameter tees and ballvalves. Pig sizes of 8” to 12 ” will negotiate bendsof 1.5D. Smaller sizes require 3D. Gauging plateavailable in aluminum or steel and machined tocustomer requirements, usually between 90%and 95% of the internal pipe diameter.

Cleaning

RCN - For the pre-commissioning of relatively shortpipelines of 3” to 12” diameter. RCN cleaning pigs willnegotiate ball valves. Pig sizes of 8” to 12” will negotiatebends of 1.5D. Smaller sizes require 3D. Two circularbrushes of either carbon or stainless steel trim are fitted.


Pigging

PE Single Bolt Bi-Directional Pigs

Batching

SLB-6 - For bi-directional, separation and batchingof products in an operational pipeline. Also useful fordisplacement, swabbing and line clearance duties.SLB-6 pigs made of a single bolt construction. Willnegotiate ball valves. Pig sizes of 8” to 12” willnegotiate bends of 1.5D. Smaller sizes require 3D.

SLIK-S - For short to medium-run, bi-directional,separation and batching products in an operationalpipeline. Also useful for displacement, swabbingand line clearance duties PE Slik-S pigs aremanufactured from a solid, single castOmnithane® polyurethane construction.The disc configuration of 4 x sealing and2 x support discs are cast in one go to giveunrivalled sealing and cleaning action, whilebeing able to negotiate short radius bends.The Slik-S pigs due to the flexibility of thesolid Omnithane® polyurethane body willnegotiate short radius bend as low as 1.5D,even in 2” pipe size. Ideally suited for deploymentin risers and umbilicals where care of the systemis a priority

Gauging

SLG-6 - For bi-directional, pre-commissioning duties.Used to prove minimum internal pipeline diameter andremoval of construction debris. SLG-6 pigs made of asingle bolt construction. Will negotiate ball valves. Pigsizes of 8” to 12” will negotiate bends of 1.5D. Smallersizes require 3D. Gauging plate available in aluminiumof steel and machined to customer requirements,usually between 90% and 95% of the internal pipediameter.


Pigging

Cleaning

SLM-6 - For removal of deposits from pipeline walls.Ideal for bi-directional pre-commissioning andoperational cleaning. SLM-6 pigs made of a single boltconstruction. Centre spacer fitted with magnets. Willnegotiate ball valves. Pig sizes of 8” to 12” willnegotiate bends of 1.5D. Smaller sizes require 3D.

SLC-4 - For bi-directional removal ofconstruction debris, liquid evacuationand product separation and batching. SLC-4 pigsmade of a single bolt construction. Fitted withcircular stainless steel brushes and by-pass portoptional to prevent build up of deposits in front of thepig. Will negotiate ball valves. Pig sizes of 8” to 12”will negotiate bends of 1.5D. Smaller sizes require3D.


Pigging

PE Chameleon Uni-Directional Pigs(2 cup)

Batching

C2C - For short-run, separation and batchingproducts in an operational pipeline. Also useful fordisplacement, swabbing and line clearance duties.Sizes available from 6” to 56”.

Gauging

C2CG - For short-run pre-commissioningduties. Used to prove minimum internalpipeline diameter and removal ofconstruction debris. Sizes availablefrom 6” to 56”.

Cleaning

C2CCS - For short-run removal of depositsfrom pipeline walls. Ideal for pre-commissioningand operational cleaning. Sizes availablefrom 14” to 56”.

C2CM - For short-run removal of depositsfrom pipeline walls. Ideal for pre-commissioningand operational cleaning. Sizes availablefrom 10” to 56”.


Pigging


Batching

C3C - For medium-run separation andbatching products in an operational pipeline.Also useful for displacement, swabbing andline clearance duties. Sizes availablefrom 6” to 56”.

Gauging

C3CG - For medium-run pre-commissioningduties. Used to prove minimum internalpipeline diameter and removal ofconstruction debris. Sizes availablefrom 6” to 56”.

Cleaning

C3CCS - For medium-run removal ofdeposits from pipeline walls. Ideal forpre-commissioning and operationalcleaning. Sizes available from 14” to 56”.

C3CM - For medium-run removal ofdeposits from pipeline walls. Ideal forpre-commissioning and operationalcleaning. Sizes available from10” to 56”.


Pigging


Batching

C4C - For long-run removal ofconstruction debris, liquid evacuationand product separation and batching.Sizes available from 6” to 56”.

Gauging

C4CG - For long-run pre-commissioningduties. Used to prove minimum internalpipeline diameter and removal ofconstruction debris. Sizes availablefrom 6” to 56”.

Cleaning

C4CCS - For long-run removal of depositsfrom pipeline walls. Ideal for pre-commissioningand operational cleaning. Sizes availablefrom 14” to 56”.

C4CM - For long-run removal of depositsfrom pipeline walls. Ideal for pre-commissioningand operational cleaning. Sizes availablefrom 10” to 56”.


Pigging

PE Chameleon Bi-Directional Pigs(Standard)

Batching

CB-4 - For short-run, bi-directional,separation and batching of productsin an operational pipeline. Also usefulfor displacement, swabbing and lineclearance duties. Sizes availablefrom 6” to 56”.

CB-6 - For medium-run, bi-directional,separation and batching of productsin an operational pipeline. Also usefulfor displacement, swabbing and lineclearance duties. Sizes availablefrom 6” to 56”.

Gauging

CG-4 - For short-run, bi-directional,Pre-commissioning duties. Used toprove minimum internal pipelinediameter and removal of constructiondebris. Sizes available from 6” to 56”.

CG6 - For medium-run, bi-directional,pre-commissioning duties. Used toprove minimum internal pipelinediameter and removal of constructiondebris. Sizes available from 6” to 56”.


Pigging

Cleaning

CC-4 - For short to medium-run removalof deposits from pipeline walls, bi-directional.Ideal for pre-commissioning and operationalcleaning. Sizes available from 6” to 16”.

CCS-6 - For medium and long-run removalof deposits from pipeline walls, bi-directional.Ideal for pre-commissioning and operationalcleaning. Sizes available from 16” to 56”.

CM-6 - For medium-run removal of depositsfrom pipeline walls. Ideal for bi-directionalpre-commissioning and operational cleaning.Sizes available from 10” to 56”.


Pigging

PE Chameleon Bi-Directional Pigs(High Seal)

Batching

CHS-8 - For high-seal separation andbatching of products in an operationalpipeline. Also useful for flooding and dewateringwhere maximum efficiency is required. Sizesavailable from 6” to 56”.

Gauging

CHSG-8 - For high-seal, bi-directional,pre-commissioning duties. Used toprove minimum internal pipelinediameter and removal ofconstruction debris. Sizesavailable from 6” to 56”.

Cleaning

CHSM-8 - For high-seal removal ofdeposits from pipeline walls. Ideal forhigh-seal, bi-directional, pre-commissioningand operational cleaning. Sizesavailable from 10” to 56”.


Pigging

PE Chameleon Bi-Directional Pigs(Long Run)

Batching

CHB-8 - For long-run separation andbatching of products in a pipeline. Alsouseful for displacement, swabbing andline clearance duties. Sizesavailable from 6” to 56”.

Gauging

CHBG-8 - For long run, bi-directional,Pre-commissioning duties. Used to proveminimum internal pipeline diameter andremoval of construction debris. Sizesavailable from 6” to 56”.


Pigging

Omni Cup Pigs

General function and application:

The PE Omni Cup pig range hasbeen designed for long distance linesand for those with significant IDvariations. The conical shape of thecup allows for considerable wearwhilst maintaining an excellent sealand for good flexibility to negotiate IDreductions. Omni Cup pigs areavailable from sizes 16” to 56” with2,3 or 4 cup configurationsdepending upon application.

Omni Cup Separation & Batching:

Used in operational duties, the Omni Cup Separation & Batching pig is used forseparating and batching products. It is also useful for displacement, swabbing andline cleaning duties.

Omni Cup Gauge:

Used in pre-commissioning duties, the Omni Cup Gauge pig is used for proving theroundness of pipelines, for removing construction debris and for identifying excessiveweld penetration.

The pigs are fitted with an aluminum gauge plate machined to customerrequirements, usually between 90% and 95% of the pipe id.

Omni Cup Cleaning:

Used in pre-commissioning and operational duties, the Omni Cup Cleaning pig isused for removal of• Rust, parafin wax and scale when fitted with spring mounted steel brushes.• Soft waxy deposits when fitted with durable Omnithane® plough blades.• Ferrous debris when fitted with magnets.


Pigging

Multi Diameter Pigging

The ability to pig Dual and Multidiameter pipelines offers the operator huge potential savingson piping costs and enables a growing number of offshore marginal fields to be exploited.The technique also allows use of smaller diameter risers for deep-sea projects.

Pipeline Engineering and Supply have developed a new Dual Diameter pig which is both costeffective and yet highly efficient for pre-commissioning, routine operations, pre-inspectioncleaning and towing an inspection pig even with high drag. This development has pushed theboundaries of what is safely feasible in such technology and allows the operators moreflexibility in the design of their pipeline. A fundamental requirement for a pig that musttraverse more than one pipe size is that it must have seals that will provide the necessarydrive in each size. Pipeline Engineering’s pig can provide this.

Dual Diameter pig designed to negotiate Wye assemblies

The pig development allows changes in line size currently estimated at up to 60% increase.Typical diameters which can be address are 10” x 16”, or 28” x 42” for example.

The pigs design and development will be a bespoke product for eachapplication – all pipelines are different - and Pipeline Engineering canprovide advice, analysis and feasibility on the application as well asdesign, manufacture and testing. Currently all dual and multidiameter pigsof this step changes should be tested for conformity, but the current trendis to see them as standard products, thus making pushing large pigsthrough small pipelines child’s play!

Inspection tool towing pig


Pigging

Pig Spares

Pipeline Engineering manufactures replacement parts for all of its own pigs, as wellas pigs supplied by other manufacturers. These parts include:

• Cups• Discs• Bumper noses• Scraper blades• Spacer discs• Springs• Brushes• Metal bodies

Replacement cups, discs, bumper noses, blades and spacer discs are made fromPE’s own formulation Omnithane® available in 3 grades – standard, super and hyper– depending upon application.

These polyurethane’s are compatible with most products which are transportedthrough pipeline systems including crude oil, refined products, natural gas, LPG,LNG, ethylene, chemicals, effluents and vegetable oils.

Springs and brushes are available in carbon steel or stainless steel.

Application and operation

PE’s replacement cups and discs are of proven design and have been used for manyyears in a variety of pigging operations. They are suitable for fitting to all types of pigsused in both pre-commissioning and service operations including gauging, cleaningand separation.

Configurations and sizesCups and discs can be manufactured to suit any pipe ID and can have the centrehole and bolt-holes drilled to suit the customers’ requirements.


Pigging

Pipeline Spheres

PE’s range of solid and inflatable spheres is used for product separation, liquidevacuation and in meter provers. They are particularly useful as an interfacebetween different grades of product in automatic or remote systems where thespheres are launched under computer control.

Manufacture

PE spheres are moulded as a single seamless unit and cast in Omnithane®. Spheresare manufactured in a hardness range of 45 to 85 Shore A, determined by theapplication and internal finish of the pipeline.

Inflatable spheres incorporate an integrated schrader valve(s) moulded into the wallof the sphere. The valves are easily removed and replaced. A sealing cap can befitted to the valve housing prevents ingress of line pressure into the sphere.

Traverse

Spheres can be used in unidirectional or bi-directional pipelines and will pass mostfull bore fittings except gate valves. Where the side branch on tees is greater than25% of the pipeline diameter, the use of PE’s Sphere Flow Tees is recommended.

Configurations

Solid spheres are available in standard sizes between 1½” and 8”, and inflatablespheres from 3” to 48”. Spheres can be weighted or have magnets embedded andare available in FDA approved polyurethane for food industry and in potable watersystems.


Pigging

FOAM PIGS (PE-KNAPP)Type Style Density

HPB(HydroPig Bare)

Light(1-2lb/cubic foot)

HPCC(HydroPig Criss Cross)


HPSC(HydroPig Criss Cross Silicon Carbide)


HPSS(HydroPig Spiral)


HPWB(HydroPig Wire Brush)


RB(Red Series Bare)

Medium(5-8lb/cubic foot)

RCC(Red Series Criss Cross)


RWB(Red Series Criss Cross Wire Brush)


RSC(Red Series Criss Cross Silicon

Carbide)


RSS(Red Series Spiral)


CB(Crimson Series Bare)

Heavy(8-10lb/cubic foot)

CCC(Crimson Series Criss Cross)


CSS(Crimson Series Spiral)


CWB(Crimson Series Criss Cross Wire

Brush)


CSC(Crimson Criss Cross Silicon Carbide)



Pigging

General function and application:For liquid removal, swabbing, drying, product separation and many cleaning duties.They are specifically suited to pipelines and piping systems with very tight radius ormitred bends, and where significant reductions in internal diameter exist.

Foam pig sizes

HPB Oversized between 1” - 2” of the pipe od

HPCC, HPSS, HPSC, HPWB Oversized between 1% - 2% of the pipe id.

RB, RCC, RSS, RSC, RWB Oversized between 2% - 5% of the pipe id.

CB, CCC, CSS, CSC, CWB Oversized between 2% - 5% of the pipe id.

Foam pig dimensionsLight density foams have an overall length of 1.5 times the nominal diameter and asealing length of 1.25 times the nominal diameter. Medium and heavy density foamshave an overall length of 2 times the nominal diameter and a sealing length of 1.5times the nominal diameter.

Foam pig optionsFoam pigs can be adapted in the following ways:Gauge plate(s) Extra longTransmitter cavity Jetting holeTow and lifting loops Magnet insertDouble dish (bi-directional) Spring insertDouble nose (bi-directional) Feed pipe for gas injectionExtra short Studs

Micro-Cellular Omnithane® Pig (MOP)Pipeline Engineering has developed the MicrocellularOmnithane® Pig (MOP) for commissioning and separation dutiesin multi-diameter pipelines.

Unlike conventional pigs made from polyurethane foam, the MOPdoes not have a tendency to collapse under high pressure,crumple or fold. The MOP is constructed from a special type ofmicrocellular Omnithane®, which has exhibited physicalproperties far in excess of the standard foam formulations. Thisprovides greater wear resistance so that one MOP can replacemany traditional foam pigs, and when its edges are coated with asolid elastomer polyurethane it works extremely well as aseparator.

The MOP has been designed to be capable of deforming up to a ratio of 3:2, allowingthem to be used in pipelines with significant diameter changes such as 12” to 8”. TheMOP is available from 2 “ to 48 “, larger sizes available upon request.


Pigging

Pressure Vessels from PipelineEngineering

Pig Traps

Pipeline Engineering design, manufacture and supply a range of pigs and pigging equipmentto the worldwide oil and gas industry.

To fully meet the needs and requirements of our customers, we have established a specialistPressure Vessel Engineering Department solely dedicated to the design, fabrication andtesting of pig launcher/receivers and associated pressure vessels.

The department is staffed by experienced and skilled engineers, capable of working to allinternational pipeline and vessel design codes, including ASME VIII; ASME B31.3, B31.4,B31.8 and BS 5500.

Our engineers employ sound project management techniques and quality control procedures.They also maintain regular contact with the customer to ensure the best solution is attainedand all parties remain fully informed.


Pigging

To complement the Pressure Vessel Engineering Department, the company has its own on-site machining, fabrication and testing facilities. We believe this helps us to maintain controlover quality and flexibility in delivery.

PE offer a range of pressure vessel products:• Pig (scraper) launcher/receivers (including subsea)• Quick-opening end closures• Sphere flow tees• Barred tees• Gas separators• Pressure reduction/valve manifold systems

Products are available as one-off stand-alone or in multiple units.We can also provide complete skid mounted packaged units thatinclude actuated valves, instrumentation, pig signallers, controlsystems and the pigs required for commissioning and production.

Over the years the company has built up an enviable reputation and its client list includessome of the largest and most respected contractors and operators in the world.

BP Single Buoy Moorings NPCCBrown & Root, UK & Int. Chevron HyundaiConoco, UK Gas Authority of India McDermott, SingaporeElf IOEC, Iran Mitsui Engineering, JapanHalliburton Kala, Iran PTT, ThailandNorsk Hydro Kuwait Oil Company JGC Corporation, JapanRockwater ONGC, India SamsungShell UK Sui-Gas, Pakistan Total, SingaporeABB Maersk IV Oil & GasShell (Nigeria) Brunei Shell Stolt Offshore


Pigging

Some of our most recent orders include:

ABB Lumus Global bv/NPCC JVOffshore Khuff Gas Project – 12 x Pig Traps – CL600-CL2500

Inelectra (Texaco Venezuela)Hamaca Upstream – 2 x 42”/46” Multiple SphereLaunch/Receive Skids & 1 x 30”/34” Multiple SphereLaunch/Receive Stations

Subsea Pig Traps:

Halliburton Rockwater1998: 6” ANSI 1500 Subsea MultiplePig Launcher Manifold for Esso JotunProject. Complete with ROV facilitiesand Soft Landing System.


Pigging

Sphere Flow & Barred TeesSphere Flow tees are used to ensure the safe traverse of spheres, foams metal-bodied and intelligent pigs across side branches and should be incorporated intopipeline systems whenever the diameter of the branch is 25% or more of thediameter of the main line.

Pipeline Engineering tees are designed to order and as with our other pressurevessel products, we are able to work to all international codes, including ASME VIII,B31.3, B31.4, B31.8 and BS 5500.

Each tee is built in accordance with the specified design code including radiographyand stress relieving if required. Tees are available up to 48” and ANSI CL 2500rating. They can be provided either flanged end, or weld end and can be fitted withextended pup-pieces as required.

Sphere flow Tees are constructed from a forged over sized tee, forged end reducersand a thorough pipe, equal to the main line pipe ID. The through pipe has a series ofslots positioned around the circumference; equal to 1 to 1.5 times the branchdiameter. This allows full flow through the branch, while allowing the sphere / pig tomaintain a seal at all times. The slots are designed to give minimum disturbance tothe flow through the branch line and allow safe passage of all types of pig.

Barred Tees can also be supplied to the same standards; which are recommendedwhere the branch diameter is above 70% of the main pipeline diameter.

We offer a full range of materials from standard carbon steels, stainless steel to moreexotic alloys such as Duplex and inconel, solid or overlay.


Pigging

Pig Handling EquipmentDesigned to withstand the rigours of the oil and gas industries the PipelineEngineering pig trolley ensures safe and damage free handling of expensive pipelineinspection pigs.

Principal features:Robust constructionHydraulic height adjustmentSafety lock fail safe system onhydraulicsPolyurethane lined cradleGalvanised winch rope andshacklesRubber buffer on cradleFixed or rail mounted


Pigging

Quick Opening Closures

Rapid Opening Closure

Open & closes within 30 secondsLong life, simple to maintain3 levels of safety interlockLow cost, quick delivery

Pipeline Engineering is a leading company in the design, manufacture and supply of piggingand isolation equipment to the worldwide oil and gas pipeline industry. Building on their 30years of experience in the industry, PE has launched its all-new Rapid Opening End Closureproviding fast access to pipelines and pressure vessels.

The closure has been specifically built to meet the needs of Pipeline Engineering’scustomers:

• Safety- built to meet all the international codes and keyoperator specifications. Robust components to avoid damagecaused by misuse. Upto three levels of safety interlock to avoidopening under pressure.

• Speed and simplicity of opening – two simplemovements, removal of vent plugs and the 25º turn of thehandle is all that is required to rapidly release the closure. Thisalso makes it highly adaptable for use subsea using ROVs.

• Ease of maintenance – designed for ease ofmaintenance, using a simple lip seal arrangement.

• Low cost and quick delivery – using the latest inCAD/CAM links and a design for manufacture culture, theclosure is produced at a highly competitive price inexceptionally fast time-scales.


Pigging

Technical data

Closure size: 6” ns – 48” ns (upto 60” ns specially built to contract)Pressure rating: ANSI #150 - #1500 as standard (#2500 and above built to contract)Design codes: ASME VIII, British Standard BS5500, API 6H, B31.3, B31.4, B31.8Design: 2 piece with hub and set-in door, retaining segment blocks, pressure

energised lip type seal and safety vent/bleeder.Materials: Hub Standard: ASTM A105, A350 LF2, A694 F52 Forging.

Optional: BS1501, A694 F60-F65, ASTM A182 Stainless Steel.Door Standard: ASTM A516, Gr. 70

Optional: ASTM A105, A350 LF2, A694 F52-F60-F65, BS1503.ASTM A182 Stainless Steel.

Segments Standard: 316 Stainless Steel.Optional: A182 / Duplex Stainless Steel.

Vent/bleederscrew

316 Stainless Steel

Seals Standard: Nitrile / Viton.Options: Explosive decompression resistant / to suit service.

Usage: Pig launchers and receivers, filter vessels, any pressure vesselwhere access is required.

Design features: Horizontal mounting hinge arm fitted to closure right hand side asstandard. Full 270-deg. swing on door hinge (adjustable for heightand reach).

Standard supply includes: GA drawing; basic calculations, hydrotest certificate, pressureretaining material certificates; NDE reports – MPI examination ofbracket welds; installation, operation and maintenance instructions;protection – one transit coat zinc rich primer; manufacturing datadossier.

Other options: Mechanical key interlock; electrical proximity switch; FEA analysis/3rd

party design appraisal; NDE (UT/MPI/DPI) of hub/ door forging/platematerial; protection – paint finish, 3 coats to offshore/UK North Seaspecification.Maintenance and service available from Pipeline Engineering.


Pigging

Clamicseal Closure

Clamicseal quick release closures are simple and safe to use. One person, usingstandard hand tools, can open or close the unit within 30 seconds. An integral safetyfeature positively prevents the closure from being opened while it remains under aninternal pressure.

The closures are used on a variety of equipment; on pig or sphere traps, on strainersand filter units, on vessels, and on meter prover end chambers. Closures areavailable in sizes from 6” to 16” and pressure ratings up to ANSI Class 600.

The standard materials of construction will safely operate between –40°C and +75°C.A Nitrile ‘O’ ring seal gives reliable sealing combined with ease of maintenance.

Pressure restraining components are machined from certified materials to suit theclosures operating specification and designed to meet the intent of BS 5500.


Pigging

Pig SignallersStandard Signallers

Bi-directional mechanical/visual sphere and pig signaller complete withmechanical/visual flag. The unit is designed and manufactured at our registeredfacility on the Catterick Bridge Industrial Estate, Richmond, North Yorkshire.

Pipeline Engineering pig signallers operate on a mechanical magnetic principle whichutilises a unique, patented design where no dynamic seals are used.

In operation, a high powered magnet is lowered and raised on a spring loaded pistonarrangement which is totally sealed inside the signaller cap. Connected the internalmagnet is a spring-loaded bi-directional trigger which protrudes into the pipeline. Thesignaller cap is fitted with a spring-loaded flag to which a high power external magnetis attached. Once the flag is set in the horizontal plane, the external and internalmagnets form a strong magnetic attraction and the signaller is set.

Upon receipt of the pig/sphere the conical trigger is tripped which in turn lowers theinternal high power magnet. As the magnet moves downwards, its attraction to theexternal magnet weakens and the flag falls under the influence of the springarrangement.

Once the signaller has been activated, the trigger returns to its original position withthe assistance of the internal spring. The signaller flag has then to be re-set by theoperator.

KEY ADVANTAGES:

• No dynamic (moving) seals – very low maintenance• Can be removed while under line pressure• Bi-Directional Trigger• Cannot be operated by line pressure• Can be supplied with mechanical or electrical indication –

or both• Designed in accordance with ASME VIII Div 1• All wetted parts to NACE MR 01 75• Optional Adjustable Trigger• Wide range of materials available• Variations other than those below are available


Pigging

Boss mounted Boss mounted with valve

Flange mounted Flange mounted with valve


Pigging

Low Pressure Isolation EquipmentAir BagsPE’s inflatable air bags, for low-pressure applications, allow safe air or water testingof pipes and drains, as well as stopping gas or liquid flow along the line.

Safe working pressure (psi)Nominal pipesize Canvas bags Nylon covered

2 “ – 6 “ 10 157 “ – 8 “ 8 12

9 “ – 10 “ 5 812 “ – 13 “ 4 614 “ – 16” 3 518 “ – 30” 2 332 “ – 33” 1.5 236 “ – 42 “ 1.0 1.544 “ – 72 “ 0.5 1.080 “ – 96 “ 0.2 0.5

Manufacture

Pipeline Engineering air bags are made by covering a natural rubber bladder witheither proofed canvas or nylon. This construction allows the deflated bags to bepassed through quite small holes in the side of the pipe. To suit pipe sizes up to 96 ”(2400mm) and in special circumstances larger bags can be made.

Application

Pipeline Engineering air bags can be used for a number of applications including:pipe testing, oil pipeline maintenance, gas pipeline maintenance, and drain testing.

It is generally accepted that the pressure, which a bag will hold back, depends on fivefactors:

1. The surface of the pipe into which the bag is to be inserted.2. The frictional resistance of the bag covers material.3. The total area of contact between bag and pipe.4. Whether or not a bag is supported.5. The pressure inside the bag itself.

It is worth noting that any physical support will dramatically increase the holdbackpressure.


Pigging

Gas Seal StoppersPE’s gas seal stoppers are an effective way to seal low pressure pipelines, drainsand sewers against the inflow and outflow of gas, liquid or debris.

Manufacture

The units comprise a fabricated steel or aluminium body together with an inflatablenatural rubber tyre. All carbon steel components receive two coats of an anti-corrosion and chemical resistant paint.


As well as sealing off the pipe ends, PE’s gas seal stoppers can be used foremergency isolation while a repair or inspection is carried out.They are also suitable for creating a gas barrier to enable welding to be undertaken.Alternatively they can plug a drain while it is under water flowing conditions.

The pneumatically or hydraulically inflated seal can overcome ovality, irregularity anddiameter variations in the pipe. In use, the stopper is positioned in the pipe and thetyre is inflated with a hand or foot pump through the integral schrader valve fitted onthe body.

Configurations, sizes and pressure ratings

Gas seal stoppers are available from 4” – 60”, and with one, two, or three seals.Depending on pipe diameter, working pressures of up to 10 bar can be maintainedwith 3 seal stoppers, adequately strutted. Small caster wheels can be fitted aidinginsertion some distance down the line. A bypass port is fitted to allow pressurisationmonitoring and venting. Sizes above 18” can be supplied as split construction so thatthey can pass through a standard manhole.

Note: for lighter duties, PE has a range of drain plugs and rubber or canvas gasbags.


Pigging

Piggable Hyperbaric SpheresFor sub-sea tie-ins on pipelines.

PE’s hyperbaric spheres are a critical item within the equipment spread necessary toperform pipeline tie-ins sub-sea.

Manufacture

PE’s hyperbaric spheres are constructed from three layers of polyurethane – a core,an intermediate seamless layer to provide strength and a softer outer layer to ensureabsolute sealing qualities. An internal tie-rod prevents excessive longitudinalexpansion and assists in increasing pressure between the pipe and the sphere,ensuring a tight seal in the pipeline.


The hyperbaric spheres are inserted either by diver or ROV into the open end of theline and positioned by removable handles. The spheres are inflated to withstanddifferential pressures of up to 3 bar. The welding habitat is sealed around the tie-inspool with the diving bell locked onto the habitat. The habitat is then pressurized withdiving gas so that the seawater is driven down out of the habitat allowing the weldingand NDT to be performed in a dry environment.

When the welding and NDT has been completed, the hyperbaric spheres are piggedout of the line. If undamaged, they can be re-tested and used again. If necessarythey can be returned to the factory for refurbishment.

Usually in harsh North Sea service a pair of hyperbaric spheres would be deployedon either side of each weld. In shallow water and more moderate environments, justone hyperbaric sphere either side of each weld may be used.

While we still manufacture the Hyperbaric Sphere for some clients, the Welding Pig(see next page) has generally superseded the Hyperbaric.


Pigging

Welding Pig

The Welding Pig from Pipeline Engineering is a new concept that takes the problemsout of pipeline welding operations.

Although conventional hyperbaric welding spheres have been used for many years,little has been done to address their inherent operational problems of poor piggabilityand the potential problem of weld “blow-out.”

The solution is the Welding Pig. It consists of two modules, each with a fabricatedsteel body and two disc seals, and each having the functionality of a hyperbaricwelding sphere. Two modules are required to affect a tie-in weld. One, the weldingpig, is fitted with a unique Omnithane® patented welding seal, developed by PipelineEngineering. When inflated, it pushes a flexible heat resistant backing materialagainst the underside of the joint to be welded. This reduces the volume of gas toalmost zero and removes the possibility of blow-back.

The modules can be installed either topside or in the wet by a diver or ROV. Onceinstalled the disc seals are inflated with water to hold 2 bar (diameter dependent)differential pressure. An annulus port allows the pressure between the seals to bemonitored during deployment. Having installed the modules the spools are drawntogether, leaving a 20mm gap between the weld faces. An inflation lance is insertedinto the welding seal and it is inflated. The spools are then drawn together to closethe weld gap.After welding the modules can be pigged out with the welding seal inflated. Theconventional design means the welding pigs perform as standard utility pigs duringrecovery.

Operators and contractors can use the Welding Pig with assurance alike. Modulardesign means the Welding Pig can easily be refurbished for multiple use, unlikeconventional hyperbaric spheres.


Pigging

Hi-Friction PigsHi-Friction Stopper Pigs are offered by Pipeline Engineering to actas a primary pressure barrier, when the required isolation point islocated some distance from the launch, or access point. They havea number of features, which make them particularly suitable fortheir intended use:

1. Large diameters available – up to 56”2. Extremely hard wearing and reliable Hyper Omnithane®

seals3. Custom built for intended purpose4. Pigging allows access to remote work-sites

Hi-Friction Stopper Pigs are available in a range of diameters from4” to 56” and are capable of withstanding pressures up to 2 bard.p. depending on diameter. Fittings are available for gaugingplates and transmitters (for location purposes).

Typical applications include:

1. Acting as the primary barrier in a pig train. Acting as theinitial pressure barrier when undertaking hyperbaric repairs.

2. For valve change-out, or repair.3. For line repair, or alteration.


Pigging

Hi-Friction Stopper Pigs are capable of retaining a differentialpressure as a result of the interference fit between their disc packsand the pipe wall. Two carefully specified disc packs are used oneach pig – one at each end of the pig – with each pack being fixedto a welded steel flange which, in turn, is fixed to the tubular steelbody of the pig. Hyper Omnithane® polyurethane discs of identicaldiameter are separated by steel spacer flanges to form each discpack. The cumulative interference fit between the discs and thepipe wall is such that the radial force enables the pig to hold thespecified pressure.

Pumps incorporated into the pipeline system, capable ofpressurising the system to a point above the holding capacity ofthe pig or pig train. Once the pig begins to move lower pressurescan be used to keep it moving until it reaches the work-site whenthe pressure can be reduced until the pig stops.

This means that a train of several pigs of this type can be movedlong distances into the pipe in order to provide a primary barriercapable of withstanding a differential pressure up to a specifiedlevel (whilst allowing a margin for safety). This type of barrier istypically used to form part of a safe working system for diversundertaking sub-sea repairs in which they may use hyperbaricspheres to isolate the pipe at the work-site.

Because the pig is bi-directional, when work has been completed,it can be retrieved by returning it to the original launching point orpigging it down the pipe in the original direction.


Pigging

Medium Pressure IsolationEquipment

Compression PlugsPE’s compression pipe plugs are used as a pipe end seal to prevent the outflow ofline product or the inflow of debris. They can also be used for emergency isolationwhile a repair or inspection is carried out.

NS SealingLength (A)

OverallLength (B)

Pressureratings

1 ” 136 180 30Bar2 ” 178 284 30Bar3 ” 190 330 30Bar4 ” 267 418 30Bar6 ” 222 418 30Bar8 ” 256 541 10Bar

10 ” 284 620 10Bar12 ” 284 620 10Bar14 ” 189 430 10Bar16 ” 214 483 10Bar

16 ”+ Refer to technical department

Manufacture

The bodies are made from carbon steel and the seals from PE’s proprietary lowhysterisis elastomer formulation. The tools are fully tested and certified prior tomobilisation.


As the compression plug is tightened inside the pipe the seal expands against thepipe wall. The seal is self-energising in that as internal pressure is applied the seal isfurther compressed. A section of the seal package is abrasive coated to improve grip.Plugs feature a by-pass port to allow pressurisation, filling, venting or pigging.Typically sizes up to 6 ” are mechanically tightened and 8 ” and above arehydraulically tightened.


Compression plugs are available for sale or rental up to 16 ” diameter and have amaximum safe working pressure of up to 30 bar (note: 30 bar is the maximum safeworking pressure for smaller diameter compression plugs).

For equipment above 16”, specified pressures and specialised applications, pleasecontact our Sales Team or Technical Office.


Pigging

High Pressure Isolation EquipmentGrip Lock Pipe PlugsPE’s grip-lock pipe plugs are used as a pipe end seal to prevent the outflow of lineproduct or the inflow of debris. They can also be used for emergency isolation whilea repair or inspection is carried out.

NS SealingLength (A)

OverallLength (B)

Pressureratings

1 ” 67 139 207 Bar2 ” 133 185 207 Bar3 ” 207 Bar4 ” 170 304 207 Bar6 ” 245 414 207 Bar8 ” 309 510 207 Bar

10 ” 307 500 207 Bar12 ” 367 520 207 Bar14 ” 367 520 150 Bar16 ” 389 554 150 Bar


Manufacture

The bodies are made from carbon steel and the seals from PE’s proprietary lowhysterisis elastomer formulation. The tools are fully tested and certified prior tomobilisation.


As the grip lock plug is tightened inside the pipe the seal expands and the vice ringsprogressively grip against the pipe wall. The seal is self-energising in that as internalpressure is applied the seal is further compressed. A section of the seal package isabrasive coated to improve grip. Plugs feature a by-pass port to allow pressurisation,filling, venting or pigging. Typically sizes up to 6 ” are mechanically tightened and 8 ”and above are hydraulically tightened.


Plugs are available for sale or rental up to 16 ” diameter. The safe working pressureof the grip-lock pipe plugs is up to 207 bar.

For equipment above 16 ”, specified pressures and specialised applications, pleasecontact our Sales Team or Technical Office.


Pigging

High Pressure Piggable IsolationPlug from Pipeline Engineering…

… the Pigging ExpertsPipeline Engineering design,manufacture and supply arange of pigs, piggingequipment and isolation toolsto the world-wide oil and gasindustry.

The company recognised theneed within the industry toreduce costs in pipelinemodification and rehabilitationand so it developed apiggable, high-pressure isolation tool that avoids the need to fully drain orvent the pipeline during essential maintenance programmes.

The tool is ideally suited to many applications in the pipeline industry, including:• Valve change-out.• Fitting removal and replacement.• Pipeline diversion.• General maintenance.• Riser replacement.

Pipeline Engineering high-pressure isolation tools can be adapted to be deployed in any of thefollowing forms:• Fully tethered – controlled and monitored using umbilical hoses passed through the closure

door.• Control umbilical tethered – tool is connected to a single high strength monitoring cable.• Fully remote – the most versatile method of deployment, the on-board inflation pumps,

accumulators and valve switching equipment are controlled and monitored using ‘through wallcommunication’ low frequency radio transmitter and receiver that enables the operation to takeplace either sub-sea or topside, as far away as necessary.

Twin module piggable isolation tool


Pigging

DesignThe high-pressure isolation plug has been designed to be left in position during a construction ormaintenance phase during a shut-down for extended periods of time. Its construction is as follows:• 2 pigging modules made from PE’s own Hyper Omnithane®• 2 plugging modules containing:• Double block and bleed system fitted with grip rings and Omnithane seals (Omnigrip®)• Hydraulic systems• Low frequency radio transmitter and receiver (fully remote only)The Omnithane® seals have beendeveloped so that the tool can copewith differences in internal pipediameters of upto 80mm on diameter.

Deployment

The tool is loaded into the pig launcher at the end of the pipeline. The closure is then locked andpressure is applied behind the tool to pig the unit to the point of isolation. The pigging medium canbe either:• Inhibited seawater• Potable water• Water/glycol mix• Nitrogen gas• Pipeline product

Once in position the hydraulic systems on board the tool are actuated and the tool is ‘set’ - a sealagainst the pipeline pressure is formed. The tool is prevented from moving while the pipelinepressure is applied, by the use of high strength tool steel vice jaws, which grip the pipe wall.

Design codes

The high-pressure isolation tool has full DNV approval and certification, and the material stresslevels have been designed to be within design code BS 5500 Appendix K.


Pigging

Pipeline Recovery ToolsThe Pipeline Recovery Tool (PRT) has been developed as a means of recoveringpipestrings at sea. A typical situation would be one in which a ‘wet buckle’ occurs asthe pipe is laid upon the seabed. In order to repair or replace the damaged section,the pipeline must be dewatered subsea and recovered to the laybarge. To carry outsuch an operation requires a tool which is capable of gripping the submerged pipe,internally or externally, with enough force to overcome the weight of the pipestring asit is lifted from the sea onto the barge.

The PRT is designed to be deployed, fitted and hydraulically energised by ROV whenused for subsea operations. Once energised, the mechanical jaws maintain their gripon the pipe wall, even in the event of complete hydraulic failure. The ROV thenattaches with winch wire from the barge to the safety hook on the PRT, using the pre-installed master line on the winch wire. The pipeline can then be recovered whilstthe ROV remains on standby.

The PRT has been carefully designed in response to a need for which alternativesolutions can result in far greater costs to the contractor. Many specialized featureshave been incorporated which have resulted in tools of unsurpassed function andreliability.

• Tools will operate in water depths down to 350m• ‘Hot Stab’ hydraulic connections, polyurethane guide noses and balanced

positioning handles have been incorporated to ensure maximum accuracy whenbeing manipulated by ROV.

• Valves and water-tight seals can be added for dewatering submerged pipelinesprior to recovery.

• Hardened vice-ring jaws are hydraulically energised while polyurethane de-actuating bands ensure that the jaws release when the hydraulic pressure isrelieved.

The PRT can be manufactured to suit a range of pipe sizes from 2” to 56”,


Pigging

Hydrotesting EquipmentFlange Weld TestersPE’s flange weld testers eliminate the need for a full system hydrotest. The tools areinserted into the line and seal either side of the weld area. The space between theseals is filled with water and pressurised.

NS A(mm)

B(mm)

Pressure ratings

1 ” 80 100 ANSI #150-15002 ” 135 150 ANSI #150-15003 ” 135 153 ANSI #150-15004 ” 156 176 ANSI #150-15006 ” 184 205 ANSI #150-15008 ” 215 240 ANSI #150-1500

10 ” 234 264 ANSI #150-150012 ” 263 293 ANSI #150-150014 ” 268 308 ANSI #150-150016 ” 270 320 ANSI #150-1500


Manufacture

The body of the tool is made from carbon steel and the seals from PE’s proprietarypolyurethane, which is a low hysterisis formulation. The tools are fully tested andcertified prior to mobilisation.


The elastomer seal is expanded radially against the pipe bore, either mechanically(up to 6 ”) or hydraulically (8 ” and above) to seal off the weld area. The sealed areais then pressurized through the fill/pressurize port with either liquid or gas to therequired test pressure.

The tools are easily installed and removed. Testing is achieved in a fraction of thetime (and cost) of a full system test. Provision and disposal problems associatedwith the test medium are minimised, as are the pre-commissioning requirements aftertest completion. The tools can easily be installed and operated by one man.


The tools are available for both sale and rental in sizes up to and including 36 ” andin pressure ratings up to and including ANSI CL.1500. For equipment above 36 ”,CL.1500 and specialised applications, please contact our Sales Team or TechnicalOffice.


Pigging

Internal Joint TestersPE’s internal joint testers eliminate the need for a full system hydrotest. The toolsare inserted into the line and seal either side of the weld area. The space betweenthe seals is filled with water and pressurised.

NS A B Pressureratings

2 ” 108 138 UPTO #15003 ” 110 146 UPTO #15004 ” 100 140 UPTO #15006 ” 170 212 UPTO #15008 ” 215 165 UPTO #1500

10 ” 250 310 UPTO #150012 ” 300 360 UPTO #150014 ” 300 376 UPTO #150016 ” 320 420 UPTO #1500


Manufacture

The body of the tool is made from carbon steel and the seals from PE’s proprietarypolyurethane which is a low hysterisis formulation. The tools are fully tested andcertified prior to mobilisation.


The elastomer seals are expanded radially against the pipe bore, either mechanically(up to 6 ”) or hydraulically (8 ” and above) to seal off the weld area. The sealed areais then pressurized through the fill/pressurise port with either liquid or gas to therequired test pressure.

Hydraulic actuation allows the joint tester tool to be deployed some distance from thepipe end, in vertical, horizontal and inclined piping. Bend negotiation is achieved bypositioning the tool with specially designed insertion equipment. The tools are easilyinstalled and removed. Testing is achieved in a fraction of the time (and cost) of afull system test. Provision and disposal problems associated with the test mediumare minimised, as are the pre-commissioning requirements after test completion.The tools can easily be installed and operated by one man.


The tools are available for both sale and rental in sizes up to and including 36 ” andin pressure ratings up to and including ANSI CL.1500. For equipment above 36 ”,CL.1500 and specialised applications, please contact our Sales Team or TechnicalOffice.


Pigging

Hire Service - Lower costs by using Hydro test tools from PE

Pipeline Engineering, as market leader, now brings you even more value for money, with ournew extended hire fleet of hydro test tools.

Designed and manufactured specifically for the oil & gas and petrochemical industries. Thisversatile and simple solution enables you to save money during pipeline repair / replacementand shutdown operations.

Internal Joint Testers (IJT) and Flange Weld Testers (FWT) are now available for hire, so youcan test new pipelines and repaired pipeline sections at a fraction of the cost of a full systemhydrotest.

Unique benefits of this range of tools:• Simply inserted into the line to seal either side of the weld area.• Reduced amount of test medium: Liquid / Gas.• Reduced time for testing.• The small area between the seals is filled with liquid or gas and pressurised up to the

required test pressure.• Confirms that weld is to the specified design standard. Strength test as well as hydro

test.• A ready stock of both tools in a range of sizes from 0.5” to 36”.• Ready for mobilisation as soon as they’re needed.• Manufactured and tested at our in-house facilities• Proven in the field; the client list includes some of the most respected companies

around the World:Shell, British Gas, Statoil, ADMA-OPCO (Abu Dhabi), ARAMCO (Saudi Arabia), PDO

(Oman), Saipem, Conoco, Coflexip Stena to name but a few.

Internal Joint TesterFlange Weld Tester


Pigging

Service and MaintenanceOperations

How you can keep your pigging equipment running asefficiently as your operations

Pipeline Engineering design, manufacture and supply arange of pigs and pigging equipment to the worldwideoil and gas industry.

It also has a services division, capable of carrying outdedicated maintenance contracts to help ensure yourpigging equipment is operating as effectively andefficiently as the day they were delivered.

To support this work we have developed a range of isolation / jointtesting tools and services that can be deployed in conjunction withproduct maintenance services, or as an independent service tocarryout pipeline rehabilitation and repair.

The division, staffed by experienced and skilled engineers involved in maintenanceand operational site work, will work with you to draw up an effective maintenanceservice contract that may include:

• Pig launcher and receiver closure doors.− Door and safety bleed screws, all moving parts,

safety interlock systems, re-certification.• Pig Signallers.

− All moving parts.• Pipeline pigs.

− Cups and discs, plates, brushes, scrapers,magnets etc.

PE Unisig pig Signallers


Pigging

As with our product range we can offer a complete solutionfrom beginning to end, including project management, design,manufacture and supply.

In each and every case Pipeline Engineering will:

• Undertake an inspection survey, to identify the exactnature of repairs and spares needed.

• Provide an inspection survey report, detailing current and future repairs required.• Agree with the client the best time to undertake the maintenance and repairs.• Undertake repairs with our usual high standard of operation.

The following is a list of companies for whom Pipeline Engineering has recentlyundertaken services and repair work:

AMEC/Shell Call-off maintenance contracts to launcher/receiver closuresystems to platforms that form the Northern IntegratedServices Contract.

Major repairs to Signallers during Hudson Field shutdown.

Chevron Maintenance to #1500 and #2500 launch and receive systemson Ninian Central platform.

ONGCC India Maintenance and repairs to over 150 closure doors on BombayHigh Main Complex and satellites.

Mobil (North Sea) Regular maintenance and disc change to production pigs.

Documents

Pipeline Engineering Brochure