Balancing tradition and innovation
What happened
TDW and industry testing contrasts squeeze-off isolation with engineered hot-tapping/plugging for polyethylene pipelines. Tests show compliant squeeze-off can be safe, but non-compliant cycles produced measurable wall thinning and cracking that create latent integrity risk. Watch for contractor method selection, proof of competency, and contract acceptance criteria that avoid squeeze-off misuse
Why the category manager should care
Treat isolation method as a procurement variable tied to contractor selection and contract SOWs, not just a field decision
Key facts
- Squeeze-off shows measurable wall-thickness reduction in non-compliant tests
- Engineered hot-tapping/plugging presented as an alternative for PE pipelines