| Issue | Cones/Bladders | Aquasol® Water Soluble Paper |
| Purge Dam Construction |
- Difficult and time-consuming
|
- Extremely simple and fast
|
| Purge Dam Characteristics |
- Prone to malfunction
- High gas usage
|
|
| Purge Dam Removal |
- Cones: difficult to remove, leaving dangerous residue
- Bladders: must be deflated
|
- No special process required.
- Post-welding flushing of pipeline with water/steam disposes of purge dam
|
| Storage and Handling |
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