Overview
Analysis
Solutions
Complete
·Feb 2, 2026
The Core Insight

Hydrogen enters through the surface—making this fundamentally a surface engineering problem, not a bulk metallurgy problem

  • The industry frames embrittlement as an intrinsic material property requiring material replacement.
  • But hydrogen must dissociate, adsorb, and absorb at the surface before it can damage the bulk.
  • Control the surface, and the bulk microstructure becomes less relevant.
  • A 10-50 nm barrier coating or a 50-200 μm trap-rich surface layer can provide complete protection regardless of what lies beneath.
Viability
Solvable
  • Multiple proven mechanisms exist to reduce HAZ susceptibility 25-35%; the target is achievable through barrier, stress, or trap approaches individually or combined.
Key Decision

If you prioritize speed and low cost, start with temperature management + molybdate validation. If you need guaranteed long-term durability and can invest 12-18 months, pursue treatment PIG development. If you want paradigm-level differentiation, fund trap engineering in parallel.

Solution Paths
01NEEDS VALIDATION

Molybdate Passivation Gel Slug Treatment

Proven 50-85% H entry reduction via gel slug; blocked by unknown durability under inspection pigging; lowest cost if it survives

02READY NOW

Operational Temperature Management

~50% diffusion reduction via existing aftercoolers; blocked only by site-specific capacity assessment; may need combination

Recommendation
  1. If this were my project, I'd start with two parallel tracks that cost almost nothing.
  2. First, I'd call operations Monday morning and get aftercooler capacity data for every compressor station.
  3. The temperature management play is pure physics—Arrhenius kinetics don't lie.
  4. If we can hold gas at 25°C instead of 50°C, we cut diffusion in half without spending a dollar on new equipment.
  5. Even if some stations need upgrades, we can prioritize by weld density.
  6. Second, I'd send a PO to Southwest Research by Friday for the molybdate pigging durability study. $30-50k and 6-8 weeks tells us whether the cheapest solution works.
  7. If molybdate survives ten simulated pig passes with >70% film retention, we're done—deploy it at $500-2,000 per treatment cycle and move on to the next problem.
  8. If it doesn't survive, we learn that in two months instead of discovering it after a field deployment.
  9. While those are running, I'd have a quieter conversation with Bonal Technologies about VSR.
  10. The stress component is 40-60% of HAZ susceptibility by most estimates.
  11. If we can get 40% stress reduction from external vibration—even just at scheduled excavations—we've addressed an independent axis of the problem.
  12. Worst case, we've reduced our target from 25-35% improvement to 15-20%, which makes everything else easier.
  13. The trap engineering concept is the one I'd fund for strategic differentiation.
  14. It's a fundamentally different approach—making hydrogen harmless rather than blocking it—and it provides insurance if barriers fail.
  15. I'd budget $150-200k for a proper process development study at Colorado School of Mines or similar.
  16. If we can crack the process control problem (diffusion zone only, no compound layer), we'd have IP that competitors can't easily replicate.
  17. What I wouldn't do is bet the project on a single approach or wait for perfect information.
  18. Run three validation studies in parallel for $100-150k total, and in 3-4 months we'll know which paths are real.

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