API 610 12th Edition Clause 6.6.7 defines the shaft deflection limits. While final FEA is the vendor’s responsibility, the data sheet can request the vendor to report the bearing span (L3) and impeller overhang (L4) ratio. Use conditional formatting to flag any L3/L4 ratio > 2.5 (overhung pumps) as a potential risk.
The is more than a form—it is a technical contract. Once you and the vendor agree on the values in that spreadsheet, those numbers become the basis for inspection, testing, and acceptance.
| Column A (Parameter) | Column B (Requirement) | Column C (Vendor Offer) | Column D (Status/Auto-Check) | | :--- | :--- | :--- | :--- | | Rated Flow (m³/h) | 250 | 250 | OK | | Normal Flow (m³/h) | 210 | 210 | OK | | Differential Head (m) | 520 | 522 | OK (Within ±5%) | | NPSHa (m) | 6.5 | 6.5 | OK | | NPSHr (m required) | - | 3.2 | Pass (Margin 3.3m) | | Speed (rpm) | - | 2950 | OK | | Pump Efficiency (%) | - | 78 | OK | | Power Absorbed (kW) | - | 415 | OK | | Motor Power (kW) | - | 450 | 450 > 415*1.10? Yes (456 required) -> |
API 610 12th Edition Clause 6.6.7 defines the shaft deflection limits. While final FEA is the vendor’s responsibility, the data sheet can request the vendor to report the bearing span (L3) and impeller overhang (L4) ratio. Use conditional formatting to flag any L3/L4 ratio > 2.5 (overhung pumps) as a potential risk.
The is more than a form—it is a technical contract. Once you and the vendor agree on the values in that spreadsheet, those numbers become the basis for inspection, testing, and acceptance.
| Column A (Parameter) | Column B (Requirement) | Column C (Vendor Offer) | Column D (Status/Auto-Check) | | :--- | :--- | :--- | :--- | | Rated Flow (m³/h) | 250 | 250 | OK | | Normal Flow (m³/h) | 210 | 210 | OK | | Differential Head (m) | 520 | 522 | OK (Within ±5%) | | NPSHa (m) | 6.5 | 6.5 | OK | | NPSHr (m required) | - | 3.2 | Pass (Margin 3.3m) | | Speed (rpm) | - | 2950 | OK | | Pump Efficiency (%) | - | 78 | OK | | Power Absorbed (kW) | - | 415 | OK | | Motor Power (kW) | - | 450 | 450 > 415*1.10? Yes (456 required) -> |
