The U2 Partial Data Report captures manufacturing and certification details for pressure vessel components built by one manufacturer for completion by another. It covers all elements required under ASME BPVC Section VIII, Division 1, including materials, design specifications, fabrication methods, and test records.
Any manufacturer holding an ASME Certificate of Authorization who produces a pressure vessel part for a second manufacturer must submit this partial data report. Both parties are identified on the form. The installation location, serial numbers, and certification stamps are recorded to ensure full traceability throughout the component's service life.
The form documents shells, heads, and tube bundles. It requires material grade, wall thickness, heat treatment status, and joint efficiency for each component. Jacket types, jacket closure details, and design pressures for both internal and external service are included. Nozzle sizes, connection types, and support configurations, including skirts, lugs, and legs, round out the structural data.
Fabricators must record impact test results and hydrostatic or pneumatic test data. The minimum design metal temperature and Maximum Allowable Working Pressure (MAWP) are calculated and certified at this stage. An authorized inspector signs the Certificate of Shop or Field Compliance to confirm all work meets ASME Code requirements. A Pressure Test Report may be filed alongside this report to document test conditions in greater detail.
Many jurisdictions require registration of pressure vessel components with the National Board of Boiler and Pressure Vessel Inspectors after fabrication. Registration carries a fee based on the vessel's design pressure, volume, and classification. A separate annual fee may apply to maintain the manufacturer's listing on the National Board registry. The completed U2 form serves as the primary supporting document for this registration. Earning the NB mark demonstrates compliance with accepted safety standards and simplifies future inspections and repairs.
Fabricators who use certified welders should maintain an AWS Welder Qualification Record to document welding procedures used during fabrication. After completion, a Certificate of Compliance may be required by the purchasing manufacturer before the component is accepted for final assembly.
| Question | Answer |
|---|---|
| Form Name | Asme U2 Partial Data Report Form |
| Form Length | 3 pages |
| Fillable? | Yes |
| Fillable fields | 487 |
| Avg. time to fill out | 32 min 43 sec |
| Other names | VIII, multichamber, exchangers, ASME |