Sample presentation title - FWR 0702 Pipelining in situ... · Wales & West Utilities – £30M / year ... PRT has emerged as a segment leader in the barrier coating and corrosion

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Delivering what we promise

Technologies division

… lead service pipe lining

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• Keith Walker Head of Morrison Utility Technologies

[email protected]


Contents

• Introduction to Morrison Utility Services

• Small diameter pipe lining


Key Clients - Gas

Wales & West Utilities – £30M / year

Scotia Gas (Southern) - £ 90M / year

National Grid Gas - £ 80M/ year


Key Clients - Electric

National Grid South West Alliance - £ 25M

o Scottish Power Energy Networks - £15M/ year

o UK Power Networks - £ 50M/ year

CE Electric - £ 30M/ year

Western Power Distribution - £ 20M/ year


Key Clients - Water

Southern Water - £ 20M/year

Thames Water - £40M/ year

Yorkshire Water – £40M/ year

Cork CC – £2M/ year


Small Diameter Pipe Lining


Why line?

• 2013 reduction in lead levels

• Public health - vulnerable groups

• Unfeasible to replace customers pipe (80%)

• Outcome regulation

• Lining – critical jigsaw price

• …and sustainability of phosphate dosing.


Notes by Tim Evans, Technical Secretary FWR Wastewater Research & Industry Support Forum

Pipe Restoration Services (PRS) is a Joint Venture of Morrison and PRT to deliver service pipe lining

using ePIPE technology to the UK as a cost effective and sustainable solution to dissolved lead and

leakage.

Pipe Restoration Technologies, LLC was established in 1998. PRT is based in Las Vegas, USA, it

focuses on developing product, equipment and process methods used in the business of in-place

epoxy pipe lining of small diameter piping systems. Since 1998, PRT has emerged as a segment leader

in the barrier coating and corrosion control industry. PRT provides specialized pipe lining technology

used in the rehabilitation of piping systems and in the prevention of heavy metals, such as lead and

copper, leaching from pipes into the drinking water supply. PRT services are provided in Europe, US,

Canada, and Latin America. PRT holds multiple process patents with an ongoing portfolio of patents

pending. PRT product lines include: ePIPE®, miniE®, eLiner®, ACE DuraFlo®, Pur PIPE®.

The blown in place epoxy lining was originally developed to solve pinhole leaks resulting from

cuprosolvancy; the fact that it could also solve plumbosolvancy was realised later.

ePIPE products are approved for contact with potable water in the USA, Canada, Spain, Belgium

and Finland. WRAS and DWI are still in the process of approving ePIPE products for the UK.

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http://www.prtcoatings.com/



In Britain the current limit for lead in drinking water [at the customer’s kitchen tap] is 25 µg/l but from

the end of 2013 the limit will be 10 µg/l. In some areas it is difficult to achieve 25 µgPb/l whereas

others are achieving 10 µgPb/l already.

In terms of terminology, the “communication pipe” runs from the main to the customer’s meter or

stopcock; the “service pipe” runs from the meter to the start of the internal plumbing; generally the

service pipe is 4x the length of the communications pipe.

Since the sampling point for the drinking water regulations is the customer’s tap, it is obvious that

replacing the communications pipe would not answer plumbosolvancy issues.

WRc has a Portfolio project on the subject CP428 Technology based solutions for lead

The rheology of the resin is key.

The technology is really applicable for smaller diameter pipes; it could be used up to 100mm

diameter but any larger than this and the volume of air to move the resin through the pipe becomes

impracticable.

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http://www.waterportfolio.com/asp/project_information.asp?project_id=442&status=Ongoing


Imagine a liquid resin travelling along

the inside surface of a pipe…

... pushed along by air



Background

Leading Utility Service provider in the UK

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PRT & .

Tackle dissolved lead challenges facing the water industry


PRT are the developers of small diameter blown in-

place pipe restoration

NSF/ANSI,Standard61

(USA, Canada, Latin

America)

Belgaqua (Belgium)

VTT Technical research

(Finland)

National Standard 375

(Singapore)

National Approval (Spain)

Health Directive

1935/2004 (EU) & 80/778

PATENT

PROTECTED

***

13 YEAR

PEDIGREE

Background


Specialists in small diameter lining?

• Thin/even coating

• Blown in place technology

• High surface area to volume ratio

• Specific/controllable curing times

• Low equipment cost


Process



After draining, the pipe is heated to 20-25°C. It is prepared by scouring with polyester granules

which are adequate for removing scale and providing a key but not so abrasive as to damage the pipe.

The ‘gun’ in slide 16 is actually mixing the 2 pack epoxy resin.

After the resin has been blown through the pipe leaving an approx 0.1mm coating, which probably

has a life of 70 years or more. It is difficult to simulate long term stability but certainly there has been

no deterioration in the 12 years that it has been deployed so far. There is a 2-stage curing process,

comprising 1 hour with warm dry air followed by 1 hour with hot water. The return to service time is not

more than 3 hours. Pipes can be lined through valves provided the valve is simply closed and

reopened before the lining has cured. If there are several properties in a vicinity they can be lined in

parallel, which reduces the on-site time per property.

The cost of installation is no more than the cost of replacing the communication and the service pipe,

to this can be added the opex savings of not dosing the water with phosphate and of the additional cost

that imposes on wastewater treatment for phosphate removal. The cost of materials is about £30, to

this would be added royalty and profit, on-site time for labour and amortisation of the equipment; if

several properties are lined in parallel, with staggered starts, there would be an efficiency saving. For a

water supply area with relatively few lead communication and service pipes, it would be possible to

eliminate phosphate dosing for a modest capital investment.

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Process


Process


Advantages of ePIPE

Cost

• Line service pipe and communication pipe

• Reduce dependency on phosphate dosing

• Single excavation over the ferrule

• Line 20m in each direction

Quality

• Exclusively delivered by PRS

• Controllable curing times

• Branches and bends – no problem

• Repair leaks

• Line any material

• 13 year worldwide pedigree

Customer

• Low impact, low risk, no lead in the supply pipe

• Small operational footprint


The Conundrum


A section cut from a lined ½” lead pipe resting on 1mm graph paper,

note the very smooth slightly rippled surface, which is a consequence of

blown-in-place application

Sample presentation title - FWR 0702 Pipelining in situ... · Wales & West Utilities – £30M / year ... PRT has emerged as a segment leader in the barrier coating and corrosion

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