Excerpt: Lmart manufactured TEMA BEM type shell-and-tube heat exchangers for BASF's OX-SE-020 project, built to ASME Section VIII Div.1, U Stamp with full material traceability and BASF-specific documentation requirements. Delivered in 2025.
Project Scope
| ITEM | DETAILS |
|---|---|
| Equipment | Shell-and-Tube Heat Exchanger (TEMA BEM type) |
| Quantity | Multiple units |
| Code / Standard | ASME Section VIII Div.1, U Stamp |
| Key Materials | Shell: SA516 Gr.70; Tubes: SA213 TP316L; Tubesheet: SA350 LF2 |
| Client | BASF SE |
| Year | 2025 |
| Project | OX-SE-020 — Oxidation Unit Heat Exchanger |
Client Background
BASF SE, headquartered in Ludwigshafen, Germany, is the world's largest chemical company by revenue. BASF operates over 230 production sites across six continents, serving industries from automotive to agriculture. The company maintains one of the most rigorous vendor qualification processes in the chemical sector — suppliers must meet BASF's internal engineering standards, which layer additional requirements on top of ASME and EN codes.
Engineering Challenges
Heat exchangers for BASF chemical service carry requirements well beyond standard ASME fabrication:
- BASF vendor qualification — BASF's internal approval process evaluates manufacturing capability, QA/QC systems, welding procedures, and past performance before any order is placed. Lmart completed a multi-stage audit covering shop capacity, welder qualifications, and NDE capability to achieve approved vendor status.
- Material traceability to melt level — BASF requires full positive material identification (PMI) and heat-traceable material test reports (MTR 3.1 per EN 10204) for all pressure-retaining components. Every plate, tube, and forging must trace back to its original mill certificate with documented chain of custody.
- Documentation depth beyond ASME minimum — Standard ASME documentation packages typically run 100-200 pages. BASF's requirements — including detailed weld maps, NDE coverage records, dimensional inspection reports, and paint/coating specifications — pushed the vendor data book well past that range, requiring dedicated documentation resources.
How Lmart Delivered
Lmart's approach focused on upfront alignment with BASF's engineering and quality teams:
- Pre-production engineering alignment — Before cutting material, Lmart submitted detailed manufacturing procedure specifications (MPS), welding procedure qualifications (WPQ), and an inspection and test plan (ITP) for BASF review. All hold points and witness points were agreed in advance, eliminating mid-production disputes.
- Full-chain material management — All pressure-retaining materials were sourced from BASF-approved mills, with 100% PMI verification at incoming inspection. Material transfer markings were maintained through every fabrication step, documented with photographs at each stage to ensure unbroken traceability.
- Dedicated documentation team — A documentation engineer was assigned from day one, compiling the vendor data book in parallel with fabrication. This allowed BASF's reviewer to flag issues early, avoiding last-minute rework on paperwork and ensuring the data book was ready for review shortly after equipment completion.
Delivery Evidence
- ASME U Stamp data reports signed by the Authorized Inspector for each heat exchanger
- Hydrostatic test performed per ASME UG-99, witnessed by AI with recorded pressure-hold data
- Complete vendor data book including mill certificates, weld maps, NDE reports (RT/UT/PT per project specification), and dimensional records
- Equipment delivered on schedule with seaworthy packing per BASF transport specifications
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