DIRECT ANSWERDefine composition and contaminants; each wall's function, pressure, temperature and material; corrosion basis; interspace; leak monitoring/collection; supports, interfaces, welding, inspection, tests and records.
Two-boundary RFQ checklist
- Inner/outer functions and design cases
- Materials, corrosion and sealing interfaces
- Interspace monitoring, collection, vent and access
- Assembly, NDE, tests and boundary-specific records
Relevant manufacturing capability
- Project-specific storage-vessel manufacturability review
- Material, welding, inspection and pressure-test control
- Batch fabrication, documentation and large-equipment delivery coordination
Key notes
- A second wall does not by itself eliminate leakage or operating risk.