Fire Damage Assessment & Fitness-For-Service - API 579 Part 11

When industrial assets are exposed to fire, direct flame contact, or process overheating, the immediate question is: Is it safe to restart? Or the replace vs repair strategy. Visual inspections alone cannot detect metallurgical degradation or internal stress shifts that occur in high-temperature incidents.

Velosi provides an extensive, systematic framework to evaluate the structural integrity of pressure vessels, piping, and tanks. We help organizations minimize downtime by distinguishing between visual damage and critical structural failure, ensuring that every restart decision delivers efficient yet measurable value. Fully compliant with API 579 Part 11.

What Velosi Offers for API 579 Part 11

Velosi Asset Integrity Limited provides a structured, multi-phase assessment process that combines precision with advanced engineering analysis and digital asset management. Our methodology is built on three pillars: Detailed Heat Zone Mapping and Digital Continuity.

Velosi’s approach goes beyond standard checklists. We provide an end-to-end recovery solution that integrates on-site detailed engineering with advanced numerical modeling, which includes:

• Forensic Heat Zone Mapping: We categorize assets into distinct “Heat Zones” (Zones I-VI) to prioritize inspection efforts, focusing on areas where material properties like yield strength and creep resistance may have been compromised.
• Advanced Material Characterization: Utilizing in-situ Field Metallographic Replication (FMR) and portable hardness testing to identify phase transformations, spheroidization, or micro-cracking in the steel grain structure.
• Integrated Level 1, 2, & 3 Assessments: From rapid conservative screening (Level 1) to complex Finite Element Analysis (Level 3) for high-value assets like reactors or heavy-wall vessels.
• Digital Integrity Sync: All assessment data, fire-zone photos, and remaining life calculations are integrated into our advanced VAIL-Plant® software, providing a “digital twin” record of the asset’s thermal history for future audits.
• Rerating & Remediation Support: If an asset is found unfit for original conditions, we provide certified engineering for pressure/temperature derating or detailed repair procedures (per ASME PCC-2) to restore integrity.