24-Oct-17 1 www.kilbrideenvironmentalservices.com Norman Howell Head of Business Development Kilbride Environmental Services Cleaning Techniques for Large Diameter Pipelines www.kilbrideenvironmentalservices.com 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 www.kilbrideenvironmentalservices.com • 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 www.kilbrideenvironmentalservices.com • 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 www.kilbrideenvironmentalservices.com Types of Pigs Swabs Foam Modified Foam Utility Pigs Foam Mandrel Cast Solid Spherical Other Systems Ice Gel Pipeline Pigs
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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
www.kilbrideenvironmentalservices.com
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
www.kilbrideenvironmentalservices.com
• Pipe Construction & Features • Product being Conveyed – Water/Gas/Oil
• Construction Material – Cast Iron, Ductile Iron, Steel, Asbestos Cement, UPVC