Tailings Storage Facility Lining

Confirm the design inputs: tailings chemistry, foundation conditions, drainage, interface stability, operating plan and the engineer of record’s liner design. The project designer sets the system arrangement and acceptance criteria.

Geomembranes, GCLs, protection geotextiles and drainage components are selected as a complete, project-specific containment system.

Confirm interfaces, joints, connections and transitions on the drawings. Adjacent products must be compatible with the selected system; proposed substitutions require designer approval.

Use current manufacturer data for the exact grade and the relevant service conditions. Generic thicknesses, tensile ratings or service-life claims do not establish suitability for every project.

Plan access, sequencing, storage, protection and covering around the project programme. Identify the inspection stages that must be completed before work proceeds.

Agree the technical submittals, method statement and QA/QC plan with the project team. Statutory approvals and independent engineering or CQA responsibilities remain as defined in the project appointments.

Before installation, confirm the product and grade, accept the work area and inspect delivered material. Establish storage, handling, layout and protection requirements using the approved method and manufacturer guidance.

For applicable geomembrane seams, the QA/QC plan identifies air-channel testing (ASTM D5820), vacuum-chamber evaluation (ASTM D5641) and destructive peel/shear testing (ASTM D6392) as appropriate to the material and seam. Test settings, sampling and acceptance criteria come from the approved specification; electrical leak testing is a separate, specified method.

Record installation checks, test results where required, repairs and hold-point releases. Protect completed work until acceptance and compile the agreed traceability and handover records.