Fitness for Service (FFS)
Clear Acceptance. Safe Operation. Confident Decisions. Determine whether equipment containing defects can continue operating safely with defensible, engineering-based assessments aligned with API 579 / ASME FFS-1.
Evaluate Fitness for ServiceDefensible Defect Acceptance Analysis
API 579 & BS 7910 Compliant Assessments.
Where Fitness for Service Creates Impact
Making confident defect acceptance decisions backed by code-compliant engineering analysis
Making Defect Acceptance Decisions
Determine whether corrosion, cracking, or metal loss is acceptable for continued operation.
Avoiding Unnecessary Repairs
Prevent premature replacement by validating safe operation through engineering analysis.
Understanding Actual Risk
Move beyond conservative judgments with code-compliant, data-driven assessments.
Supporting Re-Rating
Evaluate altered operating conditions without compromising safety margins.
Meeting Regulatory Expectations
Ensure decisions are traceable, auditable, and aligned with recognized standards.
Our FFS Services
Comprehensive Fitness for Service solutions for defect assessment and re-rating
Fitness for Service Assessment
Perform detailed flaw acceptance evaluations using appropriate FFS methodologies.
Condition & Damage Assessment
Analyze inspection data to define defect type, severity, and location.
FFS Levels I, II & III
Apply the correct assessment level based on complexity, risk, and data availability.
Re-Rating & Repair Evaluation
Assess safe pressure, temperature, or operational limits with defects present.
Engineering Justification Reports
Deliver clear, defensible technical documentation for decision approval.
Why Choose FFS Assessments
Clear engineering-based decisions that keep equipment operating safely
Confirms Safe Operation
Determines whether damaged equipment is safe to continue operating under current or modified conditions.
Reduces Unnecessary Costs
Reduces unnecessary repairs and capital expenditure by validating continued asset operation.
Clear Acceptance Limits
Provides clear engineering-based acceptance limits and defect criteria for informed decisions.
Improves Safety
Improves safety through structured, code-based analysis aligned with API 579 and BS 7910.
Regulatory Confidence
Supports confident regulatory and operational decisions with defensible technical documentation.
What We Deliver
Comprehensive outcomes supporting confident operational decisions
FFS Assessment Report
Comprehensive technical documentation with engineering-based defect acceptance findings.
Defect Acceptance & Safety Margins
Clear evaluation of whether defects are acceptable and remaining safety margins.
Run / Repair / Replace Recommendations
Clear action recommendations based on assessment findings and risk levels.
Operating Limit & Re-Rating Guidance
Guidance on safe operating pressures, temperatures, or other operational limits with defects.
Inspection & Monitoring Recommendations
Future inspection intervals and monitoring strategies for continued assurance.
Engineering Judgment That Withstands Scrutiny
Our FFS assessments combine deep integrity engineering expertise with strict adherence to international standards—ensuring every acceptance decision is safe, justified, and defensible.
Years Experience
Proven track record delivering FFS assessments across industries and geographies
Projects Delivered
Successfully completed across diverse sectors and asset types
Standards Certified
Expertise in API 579, BS 7910, and other applicable international standards
Our FFS Methodology
A structured 10-step approach to defensible defect assessment
Review Design, Inspection & Operating Data
Analyze design specifications, inspection findings, and current operating conditions.
Identify Active Damage Mechanisms
Determine corrosion, cracking, fatigue, or other degradation modes affecting the equipment.
Select Applicable FFS Standard
Choose API 579, BS 7910, or other applicable international standards for assessment.
Perform Level I / II / III Assessment
Apply the appropriate assessment level based on defect complexity, data availability, and risk.
Determine Defect Acceptability
Establish whether detected defects meet acceptance criteria for continued operation.
Verify Safety Margins
Confirm adequate safety margins remain under all operating conditions.
Evaluate Re-Rating or Repair Options
Assess feasibility of operational re-rating or recommend repair/replacement actions.
Prepare Engineering Documentation
Develop clear, auditable technical reports supporting acceptance decisions.
Support Stakeholder Decision Making
Present findings and recommendations to operations, management, and regulatory teams.
Recommend Ongoing Monitoring
Define future inspection intervals and monitoring strategies for continued assurance.
Engagement Options
Flexible approaches to meet your FFS assessment needs
Integrity Engineering Team
Dedicated engineers delivering FFS, RBI, and defect assessment services tailored to your asset portfolio.
Work With Integrity ExpertsAsset Acceptance & Compliance
Engineering justification for audits, regulators, and internal approvals with full standards compliance.
Strengthen ComplianceFixed-Scope FFS Studies
Clearly defined assessments with predictable timelines, budgets, and specific deliverables.
Request an FFS ProposalFFS Standards & Methodologies
Our assessments comply with and leverage leading international standards for defensible defect acceptance
Ready to Make Confident Defect Acceptance Decisions?
Let's evaluate your assets and provide engineering-based answers to ensure safe, compliant operations.