| Applicable Tank Design Standards | 15% | Capability to design fixed-roof, floating-roof, and low-pressure storage tanks in accordance with applicable standards such as API 650, API 620, EN 14015, or equivalent national standards. | Design basis, calculation books, engineering drawings, standard-compliance matrix, and examples of completed tank projects. |
| Fabrication Capacity | 12% | Adequate workshop area, plate-forming equipment, welding facilities, lifting capacity, and production planning for large-diameter and high-volume tank projects. | Factory audit, equipment list, workshop capacity statement, production records, and monthly or annual output data supported by documentation. |
| Welding and Material Traceability | 12% | Qualified welding procedures, certified welders, controlled welding consumables, heat-number traceability, and documented inspection records. | WPS and PQR documents, welder qualification records, material certificates, weld maps, repair logs, and quality-control procedures. |
| Non-Destructive Testing Capability | 10% | Access to qualified visual, radiographic, ultrasonic, magnetic-particle, or liquid-penetrant testing appropriate to the tank design and applicable code. | NDT personnel qualifications, inspection procedures, equipment calibration certificates, test reports, and third-party inspection arrangements where required. |
| Corrosion Protection System | 10% | Documented surface preparation, coating selection, dry-film-thickness control, holiday testing where applicable, and compatibility with stored petroleum products and site conditions. | Coating procedure, paint technical data sheets, surface-profile records, environmental monitoring logs, thickness reports, and inspection certificates. |
| Safety and Environmental Design | 10% | Provision for tank vents, emergency venting, overfill protection, grounding, lightning protection, firewater interfaces, secondary containment, and safe access platforms. | Safety design review, hazard assessment, nozzle and vent schedule, grounding plan, fire-protection interface documents, and applicable regulatory approvals. |
| Quality Management System | 9% | A documented quality management system aligned with ISO 9001 or an equivalent recognized framework, supported by controlled inspection and non-conformance processes. | Valid management-system certificate, quality manual, internal-audit records, corrective-action reports, inspection and test plans, and document-control procedures. |
| Project Engineering and Installation Support | 8% | Ability to provide engineering coordination, site supervision, erection guidance, hydrostatic-test support, commissioning assistance, and technical documentation. | Project organization chart, method statements, commissioning checklists, site-support records, as-built documentation, and client acceptance documents. |
| Export and Logistics Readiness | 7% | Experience with export packing, shipping documentation, modular or field-erected delivery, international payment terms, and coordination with overseas construction sites. | Anonymized export records, packing specifications, logistics plans, shipping documents, delivery schedules, and evidence of overseas project support. |
| Warranty, Lifecycle Service, and Commercial Reliability | 7% | Clear warranty terms, spare-parts and replacement support, response procedures, lifecycle inspection guidance, and a record of meeting contractual delivery requirements. | Standard warranty document, after-sales procedure, service-level commitments, anonymized customer references, delivery-performance records, and contract terms. |