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24-Oct-17
1
www.kilbrideenvironmentalservices.com
Norman Howell Head of Business Development Kilbride Environmental Services
Cleaning Techniques for Large Diameter Pipelines
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Agenda
1. Considerations in Selecting Pipe Cleaning Methods
2. Pipe Cleaning Equipment and Techniques
a. To Remove Soft Deposits
b. To Remove Hard Deposits
3. Questions & Answers
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• Pipe Construction & Features • Product being Conveyed – Water/Gas/Oil
• Construction Material – Cast Iron, Ductile Iron, Steel, Asbestos Cement, UPVC
• Existing Lining Materials – Cement Mortar, Bitumen, Polymeric
• Minimum and Maximum Pipe Diameters
• Magnitude of Bends and Minimum Bend Radius
• Other Pipeline Features – Valves, Branches and Gradients
• Pipe Structural Condition • Operational Conditions - Pressure
• Flow and Velocity
• Burst History
Considerations in Selecting Pipe Cleaning Methods 39” Dia Cast Iron
12” Dia Cast Iron
16” Dia Cast Iron
with Wax Deposits
12” Dia Cast Iron with
Calcite Deposits www.kilbrideenvironmentalservices.com
• Cleaning Requirements • Type, Location, and Volume of the
Substance to be Removed • Maximum Cleaning Distance
• Internal Condition and Type of Corrosion • Hard Encrustation • Soft Corrosion Deposits • Soft Mineral Deposits
• Environmental Impact • Access to the Pipeline • Use of Water • Disposal of Arisings and Cleaning Water
• Proposed Rehabilitation Solution
Considerations in Selecting Pipe Cleaning Methods 800mm Dia Concrete
630mm Dia PE
30” Dia Bitumen Lining Cast Iron
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• Swabbing
• Pressure Pigging
• Air Pigging
• Ice Pigging
• Water Jetting
Pipeline Cleaning Techniques
Soft Deposits
Hard Deposits
• Drag Scraping • Grit Blasting • High Pressure
Water Jetting
Foam Pigs Foam Swabs Plunger
Drag Scraper Grit Blasting Water Jetting
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Types of Pigs
Swabs
Foam
Modified Foam
Utility Pigs
Foam Mandrel
Cast Solid Spherical
Other Systems
Ice
Gel
Pipeline Pigs
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Pipeline Swabbing & Pigging
Permanent Pig Launcher for Water Main Cleaning
Permanent Pig Launcher for Oil Pipeline Cleaning
Permanent Pig Receiver for Oil Pipeline Cleaning
Temporary Pig Launcher for Oil Pipeline Cleaning
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Turbulence keeps
debris in suspension
Positive interference between the pig surface and the pipe wall imparts cleaning action. Fast moving stream of water also helps
Traditional Pigging
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PIG Launcher
Inlet Manganese build-up
Host Main
Line Valve
Traditional Pigging
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Pig Ejected
PIG Trap Host Main
Line Valve
Traditional Pigging
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Traditional Pigging
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Air Compressors
Water In
Pig Launch Pig Receiver
Water Tanks
Sewer
Discharge
Filtration
Existing Main
Pig 1 Pig 2
Existing Main
Water Out
Taper
Existing Main
Air Pigging
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First Pig Run
Second Pig Run Fourth Pig Run
Launch Pit
Water Samples
Air Pigging
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Ice Pigging
Ice Manufacture Ice Delivery and Insertion Operation Monitoring
Inspection of Arising
Ice Pig
After Cleaning Inserting Ice through a Hydrant
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How does it work?
Ice Pigging
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Gel Pigs • Used to clean Unpiggable Pipelines, During Commissioning and for On Going
Maintenance
• Pigs are normally Water or Glycol Based and Biodegradable
• Solid Gel Pigs are used for Routine Pigging and Product Removal
• Viscous Gel Pigs are used for Debris Pick Up, Deoiling, Dewaxing, Descaling, Dewatering – The Viscosity can be Adjusted to Suit the Application
• Many Solvents and Acids can be Gelled
• Gelled Diesel is commonly used as a Carrier of Corrosion Inhibitor in Gas Lines.
• No Requirement for a Launcher or Receiver
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• Gel Pigs can be used Alone or in Conjunction with Other Types of Pipe Pigs to Provide the following Benefits:
• Reduced wear of pigs • Decreased fluid bypass • Increased drive efficiency • Improved capacity to carry solids
Gel Pigs
Most of the Debris is Carried in the Centre of the Gel due to its High Viscosity
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Drag Scrapping
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Drag Scrapping
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Air Blast Cleaning of Pipes - Diameter Range: 25 to 1600mm
Air Blasting Post Blasting Jumbo Spinner Blast
Grit Blasting
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• Ability to Clean 1km Sections in one Operation
• Separate Jetter/ Vacuum & Hose Modules for Flexibility
Tracked Jetter
High Pressure Jetting
Road Jetter
Remote Jetting Reel
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Tracked Jetter
Traditional High Pressure Jetting
1st
pass
2nd
pass
3rd
pass
4th
pass
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• Typhoon has a Unique Patented Valve Design which enables the Cleaning Head to be Remotely Switched between Thrust and Cleaning Modes Multiple Times
• Diameter range: 200mm to 2000mm
• Typhoon range: 1.2 kilometre from a single access point working upstream and downstream
• Cleaning Speed: 0.1 to 0.5 metres per second
• Pipeline Bends: Designed to traverse pipe bends as severe as 1.5D - 90°
• Capable of Cleaning Complex Sections of Pipe containing Vertical and Horizontal Bends
• Bore Changes: Can pass through changes in bore diameter of 10% to 20%
• Valves: Can clean up to valve faces using forward facing jets
The Typhoon High Pressure Water Cleaning System
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The Typhoon Process
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Before After
Cement lined
Bitumen lined
Polyethylene
The Typhoon Cleaning System • Can be used to clean pipes constructed
of Unlined Cast Iron, Ductile iron, Steel, UPVC, Polyethylene and Polypropylene
• Can clean pipes lined with Cement, Bitumen, Epoxy, Polyurethane
• Avoids damage to internal linings especially on the internal radii of bends
• Recycled water allows full day use without refilling
• Small site footprint • For access requires removal of only a
small section of pipe
• The system is fully adjustable and highly controllable Adjustable variables:
• Water pressure
• Manifold angle of attack • Fan spread angle
• Distance of the fan jets to the pipe wall
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The Standard Typhoon
Provides impeccable cleaning to water mains of all constructions
The Transformer Typhoon
Can be introduced into a pipeline through a 600mm branch connection.
The Intensifier Typhoon
High pressure version of Typhoon for the removal of hard encrustation & corrosion
on pipe walls
The Typhoon Variants
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Collapsed Position Expanded Position
• Diameter Range: Single Unit covers 650mm to 2000mm
• Transformer Range: 1.2 kilometre from a single access point
• Access Requirements: Introduced into a Pipeline through a minimum 600mm diameter Branch Connection
• Cleaning Capability: Provides full 360o Cleaning Coverage around the Pipe Wall
• Changes in Pipe Dia: Can Accommodate Changes in Diameter within a Pipeline Section
The Typhoon Transformer
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• High Pressure Water Cleaning for Unlined & Lined Water Mains of All Constructions
• Capable of Removing Hard Deposits, Corrosion & Redundant Linings
• Pressures of up to 340 Bar are Developed at the Intensifier
• Fully Controllable & Adjustable to Protect Pipeline Integrity
• Unique Walking System provides a Constant Speed of Travel to give Precision Cleaning
Typhoon Intensifier – High Pressure Cleaning
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Cast Iron and Steel pipes with Bitumen Linings
Typhoon Intensifier – High Pressure Cleaning
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Thank You
Innovation, Expertise, Experience
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Contact Details
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Norman Howell - Head of Business Development
Kilbride Environmental Services Ltd
200 Queensway North,
Team Valley Trading Estate
Gateshead,
Tyne & Wear NE11 0NX
M: +44 (0)7530 630966
W: www.kilbrideenvironmentalservices.com