Connector Condition Index (CCI)
The Next Evolution in Small Bore Tubing Management
A smarter way to understand small bore tubing
The Connector Condition Index (CCI) helps operators identify higher-severity tubing connections using validated inspection data — supporting targeted maintenance, reduced intrusive inspection activity, and improved integrity visibility.
The Challenge After Inspection
How CCI Works
The Connector Condition Index (CCI) turns Tru-Fit inspection results into a simple numerical score that shows the condition of tubing connectors, helping operators prioritise maintenance more effectively
1. Inspect
Approved inspection methods checks tubing connector condition using clear criteria and visible features
2. Grade
Connectors are assigned a grade from 1-5 based on their observed condition
- 1 – As expected
- 2 – Slight deviation
- 3 – Moderate deviation
- 4 – Major deviation
- 5 – Severe deviation
Higher grades indicate higher levels of assembly concern.
3. Calculate
CCI turns inspection grades into an overall view of connector view across the system
| 1.0 – 1.9 | Very Low |
| 2.0 – 2.9 | Low |
| 3.0 – 3.9 | Moderate |
| 4.0 – 4.9 | High |
| 5.0 – 5.9 | Very High |
4. Prioritise
Higher-severity populations can be prioritised for further inspection, maintenance activity, or integrity review.
Example CCI Output
| System | CCI | Relative Severity Band |
|---|---|---|
| Hydraulic Panel A | 1.4 | Very Low |
| Chemical Injection Skid | 2.7 | Low |
| Compressor Instrument Rack | 3.2 | Moderate |
Lower CCI scores indicate fewer assembly-condition issues across the inspected population. CCI results can also be tracked over time to support maintenance planning and integrity monitoring.
Operational Case Study
Client: Legasea – Subsea Specialists Legasea image
Location: Aberdeen
Date: 21st April 2026
Fitting Type: Parker ½”
Equipment Type: Pressure accumulator units
Inspection Method: TruFit (independently validated to grade-resolved criteria)
| Unit | CCI | Relative Severity Band |
|---|---|---|
| A | 1.3 | Very Low – CCI-DJ92-G8R9-8E8I |
| B | 1.5 | Very Low – CCI-LT58-E2E2-9Y9Z |
| C | 1.8 | Very Low – CCI-KZ48-K8N7-3S7K |
“Having greater visibility of assembly condition across equipment helps give us more confidence in the readiness and integrity of assets operating in different environments.”
— Ray Milne, Operations Director, Legasea
Traditional Inspection vs CCI Approach
| Traditional Approach | CCI Approach |
|---|---|
| Blanket inspections | Targeted prioritisation |
| Limited visibility | Improved condition visibility |
| Reactive maintenance | Risk-informed planning |
| Intrusive verification | Reduced intrusive activity |
| Qualitative assessment | Consistent scoring framework |
CCI Technical White Paper
Download the latest CCI white paper:
- The CCI framework methodology
- How inspection inputs are validated
- Integration with risk based inspection (RBI)
- ALARP and lifecycle integrity considerations
- Practical case studies and operational applications
- Governance and implementation guidance
How to Qualify to Produce a CCI Certificate
CCI certificates are issued using inspection methods that have been independently validated to meet the grade-resolved classification criteria defined within the CCI white paper.
At present, the Tru-Fit inspection platform (Paragon) is the only method with published independent validation aligned to these criteria.
Other inspection methods may be considered for CCI certification following equivalent validation and inclusion within the Paragon-maintained CCI Validation Registry.
What CCI Does Not Do
- Does not predict individual connector failure or define safety threshholds
- Replace RBI, ALARP, or fitness-for-service assessments
- Remove inspection uncertainty or engineering judgement
- Incorporate consequence of failure
- Does not provide fitness-for-service determination
- Require changes to existing integrity systems
CCI is a decision-support tool based on inspection data. Duty holders remain responsible for engineering decisions and risk assessments.
CCI is a decision-support tool based on inspection-derived data. Duty holders remain responsible for engineering decisions and risk assessments. Paragon Inspection Solutions Limited accepts no liability for any losses arising from reliance on CCI outputs.
© Paragon Inspection Solutions Ltd – info@p-ins.co.uk
Building Connector Integrity Intelligence
Tru-Fit inspection provides a non-invasive, clear view of connector assembly condition without breaking containment, highlighting areas of reduced leak prospensity.
CCI analysis converts this data into a simple, repeatable metric for comparing connector assembly condition, supporting screening and communication across engineering and integrity teams
Our Team
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