The vessel's design pressure of 22 MPa and vacuum capability meet our stringent TÜV requirements. We particularly appreciate the detailed welding procedure specifications (WPS) and the flawless PWHT documentation. The Chinese manufacturer understood our need for precision—tolerances were tighter than ASME VIII Div.1 requirements. The hydrogen service design with stainless steel cladding on wetted surfaces shows they understand high-purity hydrogenation processes. Sehr empfehlenswert.
Robust construction suitable for our tough operating environment. The vessel handles our coal-to-liquid hydrogenation process with Fischer-Tropsch syncrude—highly corrosive service. The internal cladding overlay (E309L/E347) has shown zero defects after 18 months operation. We appreciate the comprehensive spare parts list and recommended maintenance schedule. The manufacturer even provided on-site supervision during our first catalyst loading. Good value for African market conditions.
Technical bid included HTRI thermal simulation with fouling factor 0.0002 m²·K/W for our naphtha hydrotreater. SA516 Gr485 + 1.25Cr-0.5Mo tube combination optimized for high-temperature hydrogen sulfide resistance. Delivery EXW Qingdao to CIF Ulsan was 22 days, door-to-door. Zero NCRs during FAT. Korean PM assigned spoke technical English fluently. Already approved for Phase 2 EPC.
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