secondary containment:
DESCRIPTION
Secondary Containment:. From A Contractors Point of View. Secondary Containment:. Advances in Technology Last 10 years. What is Secondary Containment:. Primary (Tanks) vs Secondary (Undertank Liners or Dikes) The Original Secondary Containment. Types of Advances. Materials - PowerPoint PPT PresentationTRANSCRIPT
Secondary Containment:From A Contractors Point of View
Secondary Containment:Advances in Technology
Last 10 years
What is Secondary Containment:
Primary (Tanks) vs Secondary (Undertank Liners or Dikes)
The Original Secondary Containment
Types of Advances
• Materials• Seaming Equipment• Testing Equipment• Technician Training
Materials
• HDPE (High Density Polyethylene)• Alloys (XR-5, 1932 PTF (polyurethanes)• GCL’s (Geosynthetic Clay Liners-
Bentomat, No longer making Claymax)• Others (Concrete Canvas, Spray Applied-
poly-ureas,etc)
HDPE
• Advances in resins?• Initial resins were pipe grade (not flexible)• Resins over last 10 years have been
improved to be more flexible and chemical resistant
• Wide flat dies on extruder as opposed to blown film
Alloys
• XR-5 • Manufactured in wider rolls• Less seaming• Embed is now available• Improved Walkway material available• Polyurethanes (1932 PTF)
GCL’s
• Claymax-Original GCL, no longer produced• Newer GCL’s• Bentomat 200R-Needle punched to prevent
migration of bentonite granules• Bentomat CL-Layer of membrane on back• Aqua Shield-Layer of membrane, Pond usage,
etc
Others
• CONCRETE CANVAS• Concrete still not considered impermeable liner• Product has it’s uses• Cover over membrane• Small dike area, etc.• SPRAY APPLIED (better spray equipment, robot
spray equipment now available, Factory sheets shipped to site, less field seaming)
• Polyurea’s etc.
Seaming Equipment
• Fusion Welders(faster-15’ per foot easy, lighter, smarter)
• Extrusion Welders (Alloy extrusion welding, HDPE-faster-6-9’ easy,lighter)
Testing Equipment
• Vacuum Box• Air Channel• Air Lance
Temporary Containment
Temporary Dikes
• Extruded Products readily available• Larger dikes now available• Materials can be cleaned & re-used• Other quick systems(metal with liner, etc)
Technician Training
• Great strides in training of personnelIAGI (International Association ofGeosynthetic Installers)FML Manufacturers approval and certification availableInstaller training (reputable installers)
• FML Inspector Certification available(GAI)
PLS Crack FML Inspector
Completed Secondary Containment Liner