After an inspection finding, teams often want one clear answer:
Can we keep operating, or do we need to stop?
But in asset integrity management, the decision is usually more structured than a simple yes or no.
When pressure equipment, piping, pipelines or other critical assets show damage, the decision may fall into one of four paths:
- Run
- Repair
- Re-rate
- Replace
Each option has a different technical meaning, risk level, documentation requirement and business impact.
The purpose is not to choose the cheapest or fastest option. The purpose is to choose the option that is technically justified, safe, traceable and aligned with the asset’s future operating condition.
Brief Summary
Run, repair, re-rate or replace is a practical decision framework used after inspection findings, damage, degradation or integrity concerns are identified.
The decision depends on:
- Inspection findings
- Damage mechanism
- Remaining strength
- Operating conditions
- Risk and consequence
- Fitness-for-Service / FFS
- Risk-Based Inspection / RBI
- Repair feasibility
- Remaining life
- Documentation and approval
For technical teams, this is not only an engineering decision. It is also a competency issue. Inspection, maintenance, reliability and operations teams need a shared understanding of what each option means.
Why This Decision Matters
A poor integrity decision can create unnecessary cost, downtime or safety risk.
For example:
- Replacing equipment too early may waste capital.
- Running damaged equipment without proper assessment may increase failure risk.
- Repairing without understanding the damage mechanism may lead to repeat failure.
- Re-rating without clear limits may create operational confusion.
- Choosing a temporary repair without review may create hidden long-term risk.
This is why asset integrity teams need a structured decision process.
The decision should be based on technical evidence, not pressure, habit or assumptions.
Option 1: Run
Run means the asset can continue operating under its current conditions.
But “run” should not mean “ignore the finding.”
A run decision should be supported by evidence.
The team should confirm:
- The finding is within acceptable limits
- The damage mechanism is understood
- The operating conditions are controlled
- The risk level is acceptable
- The next inspection or monitoring activity is defined
- The decision is documented
- The decision has been reviewed by competent personnel
In many cases, a Fitness-for-Service assessment helps support a run decision. FFS evaluates whether equipment with known damage can continue to operate safely under defined conditions.
The Fitness-for-Service / FFS Guide explains how FFS supports continued operation decisions after inspection findings.
A run decision is acceptable only when it is controlled and traceable.
Option 2: Repair
Repair means action is required to restore the asset to an acceptable condition.
Repair may be needed when damage exceeds acceptable limits, when degradation is active or when continued operation without intervention is not justified.
Common repair types include:
- Welded repairs
- Mechanical repairs
- Composite repairs
- Component replacement
- Coating repair
- Leak sealing
- Temporary repairs
- Permanent repairs
Repair decisions should consider:
- What caused the damage?
- Is the damage active?
- Is the repair temporary or permanent?
- Is the repair suitable for pressure and temperature?
- Is the material compatible?
- What inspection is needed after repair?
- What testing is required?
- How will the repair be documented?
- Will the repair affect future inspection?
For pressure equipment and piping, repair decisions often connect with ASME PCC-2. Teams can use NTIA’s Repair Pressurized Equipment Training to build stronger understanding of repair methods, inspection requirements and documentation.
Repair should not be treated as only a maintenance activity. It is part of the integrity decision chain.
Option 3: Re-rate
Re-rate means changing the allowed operating limits of equipment.
This may include reducing or changing:
- Maximum allowable working pressure
- Operating pressure
- Temperature limits
- Design basis
- Service conditions
- Operating envelope
Re-rating may be considered when the asset can continue operating, but not under the same conditions as before.
For example, equipment with wall thinning may not be suitable for the original pressure, but may be acceptable at a lower pressure after technical assessment.
A re-rate decision should be very clear.
The team must define:
- New operating limits
- Technical basis for the new rating
- Required markings or documentation
- Impact on process operation
- Inspection interval changes
- Monitoring requirements
- Approval responsibility
A weak re-rate decision can create confusion. If operations do not understand the new limits, the asset may be used outside the approved envelope.
This is why re-rating must be documented and communicated clearly.
Option 4: Replace
Replace means the asset or component should be removed and replaced instead of continued operation or repair.
Replacement may be the best decision when:
- Damage is severe
- Damage is widespread
- Remaining life is too short
- Repair is not technically reliable
- Repair cost is too high compared with long-term value
- Failure consequence is high
- Inspection confidence is low
- The asset no longer suits current service conditions
- Repeated repairs are occurring
Replacement is not always the most expensive decision when lifecycle risk is considered.
A repair may look cheaper today but become costly if the same issue returns, downtime increases or risk remains high.
Replacement should be considered when repair no longer gives enough technical or economic confidence.
How Inspection Findings Lead to a Decision
The decision usually starts with an inspection finding.
Examples include:
- Wall thinning
- Local metal loss
- Cracking
- Pitting
- Erosion
- Dents
- Weld defects
- Leaks
- Coating failure
- Corrosion under insulation
- Mechanical damage
But the finding itself is only the starting point.
The team must understand:
- What is the finding?
- Where is it located?
- How severe is it?
- What caused it?
- Is it growing?
- What is the consequence if it fails?
- Is immediate action required?
- Is further assessment needed?
Only after these questions are answered can the team choose between run, repair, re-rate or replace.
Role of Fitness-for-Service / FFS
Fitness-for-Service / FFS is often central to this decision.
FFS helps determine whether equipment with known flaws or damage can continue operating safely. API 579 / ASME FFS-1 is commonly used as a structured method for evaluating in-service equipment with damage or flaws, including decisions around continued operation, repair, re-rating or replacement.
FFS can support:
- Run decisions
- Repair decisions
- Re-rating decisions
- Replacement justification
- Remaining life evaluation
- Inspection interval planning
Without FFS, decisions may become too conservative or too risky.
A team may replace equipment unnecessarily because damage looks serious at first glance. Or it may continue operating equipment that should have been repaired or removed from service.
FFS helps bring engineering structure into the decision.
Role of Risk-Based Inspection / RBI
Risk-Based Inspection / RBI supports the decision from another angle.
RBI helps teams prioritize inspection based on risk. It considers likelihood of failure and consequence of failure.
The Risk-Based Inspection / RBI Guide explains how RBI helps teams move from fixed intervals to risk-based inspection planning.
RBI can help answer:
- Which equipment needs attention first?
- Which findings have higher consequence?
- Which assets require shorter inspection intervals?
- Where should inspection resources be focused?
- How does risk change after repair or re-rating?
After a run, repair, re-rate or replace decision, the RBI plan may need to be updated.
For example:
- A repair may reduce risk.
- A temporary repair may require more frequent monitoring.
- Re-rating may change likelihood or consequence.
- Replacement may reset inspection planning.
- Continued operation may require closer follow-up.
The decision should feed back into the inspection strategy.
Role of PIMS and Asset Integrity Management
For pipeline systems, the decision also connects with Pipeline Integrity Management System / PIMS.
PIMS helps pipeline teams connect inspection data, threats, risk ranking, maintenance actions and documentation. The Pipeline Integrity Management System training course helps teams understand how pipeline integrity decisions are structured.
For wider industrial assets, these decisions sit inside Asset Integrity Management.
A good integrity system should make sure that every major decision is:
- Technically justified
- Approved by the right people
- Documented clearly
- Communicated to operations
- Reflected in inspection plans
- Reviewed over time
If your team is building a broader capability framework, the Asset Integrity Management guide gives a wider view of how inspection, repair, reliability and risk decisions connect.
A Simple Decision Framework
A practical decision process may look like this:
1. Confirm the Finding
Before making any decision, confirm the inspection data.
Ask:
- Is the finding accurate?
- Is the location correct?
- Is the measurement reliable?
- Is additional inspection needed?
- Is the finding new or repeated?
Poor data leads to poor decisions.
2. Identify the Damage Mechanism
The team must understand what caused the damage.
Examples include:
- Internal corrosion
- External corrosion
- Erosion
- Fatigue
- Cracking
- Creep
- Mechanical damage
- Coating failure
- Incorrect operation
If the damage mechanism remains active, the decision must address it.
Repairing damage without controlling the cause often leads to repeat failure.
3. Assess Severity and Risk
The team should assess both technical severity and consequence.
Ask:
- How serious is the damage?
- How much remaining strength exists?
- What happens if failure occurs?
- Is the asset safety-critical?
- Is production affected?
- Is environmental consequence possible?
- Is immediate action required?
This step connects inspection data with risk.
4. Choose the Decision Path
After assessment, choose one of the main paths:
- Run if continued operation is technically acceptable.
- Repair if integrity can be restored through a controlled repair.
- Re-rate if operation is acceptable only under changed limits.
- Replace if continued operation or repair is not technically or economically justified.
The decision should be clear. Ambiguous decisions create operational risk.
5. Document and Communicate
Every decision should be documented.
Records should show:
- Inspection finding
- Damage mechanism
- Assessment method
- Decision selected
- Technical basis
- Operating limits
- Repair or monitoring requirements
- Approval
- Review date
Operations, inspection, maintenance and reliability teams should all understand the decision.
Common Mistakes
Treating “Run” as No Action
A run decision still needs monitoring, review and documentation.
Repairing Without Understanding the Cause
If the damage mechanism is not addressed, the same issue may return.
Re-rating Without Clear Communication
New operating limits must be visible and understood by operations.
Replacing Too Early or Too Late
Replacement should be based on risk, remaining life and lifecycle value, not fear or delay.
Leaving Decisions Undocumented
If the decision basis is not recorded, future teams may not understand the risk.
Why Training Matters
The run, repair, re-rate or replace decision requires shared technical understanding.
Inspection teams may detect the finding.
Maintenance teams may perform the repair.
Reliability teams may evaluate risk.
Operations may control the operating envelope.
Managers may approve cost and downtime.
If these groups do not understand the same decision logic, the final action can become inconsistent.
Training helps teams understand:
- How inspection findings become decisions
- How FFS supports continued operation
- How RBI supports prioritization
- How repair standards support repair selection
- How re-rating affects operations
- How documentation protects future decisions
For organizations developing internal capability, NTIA’s Asset Integrity Training for Technical Teams explains why shared technical training matters across inspection, reliability and maintenance teams.
Final Thoughts
Run, repair, re-rate or replace is not just a maintenance choice.
It is an asset integrity decision.
The right decision depends on inspection data, damage mechanism, risk, operating conditions, repair feasibility, remaining life and documentation.
A strong team does not choose the fastest option by default. It chooses the option that can be technically justified and safely managed.
If your team needs stronger capability in asset integrity decision-making, explore NTIA’s Asset Integrity Management training options or contact NTIA to discuss a dedicated training approach.
FAQ
What does run, repair, re-rate or replace mean?
Run, repair, re-rate or replace is a decision framework used when equipment has inspection findings, damage or degradation. It helps teams decide whether to continue operation, repair the asset, change operating limits or replace the equipment.
When can equipment continue to run?
Equipment may continue to run when inspection findings are within acceptable limits, risk is controlled, operating conditions are defined and the decision is supported by technical assessment and documentation.
What does re-rate mean?
Re-rate means changing the approved operating limits of equipment, such as pressure, temperature or service conditions. It may be used when equipment can continue operating safely, but not under the original conditions.
How does Fitness-for-Service support the decision?
Fitness-for-Service / FFS helps evaluate whether damaged equipment can continue operating safely. It can support decisions to run, repair, re-rate or replace depending on the findings and assessment result.
Why is documentation important in integrity decisions?
Documentation shows why a decision was made, what data was used, who approved it and when it should be reviewed. Without documentation, future teams may not understand the technical basis or risk.