Seam Documentation

Overview

The Seam Log is the core of geomembrane QC documentation. Every weld between panels must be recorded with sufficient detail to trace back to the welder, machine, and test results. GeoQC makes this process fast and error-free.

Creating a seam entry

1. Seam number — Auto-generated sequentially. GeoQC ensures no duplicate numbers.
2. Weld type — Fusion (wedge welder) or Extrusion.
3. Welding machine — Select from your equipment inventory or enter manually.
4. Operator — Select the welder from your team members. Their IAGI CWT certification status is displayed.
5. Connected panels — Select the two panels this seam connects. GeoQC validates they exist in the deployment log.
6. Ambient conditions — Temperature, wind speed. GeoQC can flag if conditions are outside welding specifications.
7. Machine settings — Temperature, speed, pressure as applicable.

Non-destructive testing (NDT)

After welding, every seam must be tested non-destructively. For each seam, record:

• Air channel test — Pressure applied, hold time, pass/fail
• Vacuum box test — For extrusion welds and T-seams
• Spark test — For certain material types

Seam traceability

Every seam entry maintains a complete chain of traceability:

Welder → Machine → Seam → Panels → NDT Result → Destructive Test (if sampled)

If a destructive test fails, you can instantly find all seams welded by that operator with that machine on that date.

Viewing and filtering seams

The Seam Log supports filtering by:

• Date range
• Welder / operator
• Welding machine
• Weld type (fusion / extrusion)
• NDT status (tested / untested / failed)