Track the assessment, design, fabrication, inspection, testing and close-out records needed for a defensible repair package.
A repair can be technically sound and still leave the owner exposed if the design basis, field deviations, inspection results and final as-built condition cannot be reconstructed later. This checklist focuses on the document trail from defect discovery to return to service.
Create one traceable record showing what was damaged, why the chosen repair was accepted, exactly what was installed, how it was verified and what future controls remain.
Use it when
A structural, mechanical or equipment repair is being engineered rather than treated as routine maintenance.
A workshop needs clear hold points and acceptance requirements before starting work.
Temporary and permanent repairs must be distinguished and controlled.
The owner needs a final repair dossier that can support future inspections and failure investigations.
Do not use it to
Turning a checklist into a generic repair procedure without project-specific engineering.
Assuming fabrication quality records prove the repair design itself was adequate.
Closing unresolved root cause, recurrence or operating-limit issues because the visible defect has been removed.
Replacing statutory, code, OEM, client or quality-system documentation requirements that apply to the actual job.
02
Stop and escalate when
These conditions deserve an explicit competent-person decision rather than being treated as routine checklist gaps.
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The repair scope changes after work starts and the deviation has not been dispositioned by the responsible engineer.
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The defect is larger, deeper or more widespread than the engineering assessment assumed.
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Material identity, crack extent or remaining section cannot be established well enough for the proposed repair basis.
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Required hold points, NDT or inspections were missed before the work became inaccessible.
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Return to service depends on an outstanding test, restriction or temporary condition that is not formally controlled.
03
Working checklist
Your assessment is stored in this browser. Assign an explicit outcome, record the evidence behind it, and capture actions for every gap or unclear item.
Assessment record
Identify the asset and assessment basis
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01
1. Define the defect and asset status
The repair file should preserve the as-found condition and the decision that initiated the repair pathway.
Record asset identity, location, component and exact defect location.
Add measurement, evidence or notes
Include the original damage report, event chronology and as-found photographs.
Add measurement, evidence or notes
Record measured damage extent, deformation, section loss and relevant inspection findings.
Add measurement, evidence or notes
Record the asset status and immediate controls while the repair is being developed.
Add measurement, evidence or notes
Identify the decision required: temporary stabilisation, permanent repair, replacement or further assessment.
Add measurement, evidence or notes
Preserve removed fragments or evidence where failure mechanism investigation may still be required.
Add measurement, evidence or notes
02
2. Record the engineering assessment and basis
The repair should be traceable to the problem it is intended to solve, not only to a drawing of new steel or weld metal.
Document the likely damage or failure mechanism and confidence in that conclusion.
Add measurement, evidence or notes
Record relevant loads, duty, operating history and abnormal events considered in the assessment.
Add measurement, evidence or notes
Record material information and any assumptions used where material is not fully confirmed.
Add measurement, evidence or notes
Identify the original design basis, applicable standards, OEM information and owner requirements considered.
Add measurement, evidence or notes
State required repair life: emergency, temporary, shutdown-to-shutdown, permanent or another defined period.
Add measurement, evidence or notes
Compare credible options such as repair in kind, replacement, redesigned replacement and reinforcement.
Add measurement, evidence or notes
Document why the selected option is appropriate for strength, fatigue, stiffness, access, inspectability and service life.
Add measurement, evidence or notes
Record engineering calculations, analysis and key assumptions supporting the repair.
Add measurement, evidence or notes
03
3. Issue a complete repair design package
The fabrication team should not need to invent critical design details in the workshop or field.
Issue a controlled repair drawing showing limits of removal, final geometry, dimensions and interfaces.
Add measurement, evidence or notes
Specify material grade, thickness, fasteners and required traceability.
Add measurement, evidence or notes
Specify weld category/detail, size, extent, access and sequence where relevant.
Add measurement, evidence or notes
Specify surface preparation, crack removal confirmation and acceptance before welding or rebuild.
Add measurement, evidence or notes
Specify preheat, interpass, consumable, WPS/PQR and welder qualification requirements where relevant.
Add measurement, evidence or notes
Specify machining, alignment, fit-up, tolerance and final dimensional requirements.
Add measurement, evidence or notes
Define NDT method, coverage, timing and acceptance basis for each inspection stage.
Add measurement, evidence or notes
Define hold points, witness points and who may release each stage.
Add measurement, evidence or notes
State operating restrictions, inspection intervals or other conditions attached to the repaired asset.
Add measurement, evidence or notes
04
4. Control fabrication and field changes
The final dossier must distinguish the issued design from what actually happened during the repair.
Record material certificates, batch/heat identification and part traceability where required.
Add measurement, evidence or notes
Record approved WPS, welder identity and relevant qualification evidence.
Add measurement, evidence or notes
Capture pre-repair dimensions and fit-up checks required by the design.
Add measurement, evidence or notes
Photograph important stages before details become concealed or inaccessible.
Add measurement, evidence or notes
Record preheat/interpass or other process parameters where specified.
Add measurement, evidence or notes
Raise nonconformance or deviation records when the field condition differs from the design.
Add measurement, evidence or notes
Obtain engineering disposition before incorporating material, geometry or sequence changes into the work.Escalation-sensitive
Add measurement, evidence or notes
Mark up the repair drawing progressively so the final as-built state can be reconstructed.
Add measurement, evidence or notes
05
5. Complete inspection, testing and acceptance
Inspection records should prove the specified stages were completed, not simply state that the repair 'passed'.
Record pre-repair NDT used to establish defect extent or confirm crack removal.
Add measurement, evidence or notes
Record in-process inspection results at defined hold points.
Add measurement, evidence or notes
Record final NDT report numbers, methods, coverage, indications and acceptance result.
Add measurement, evidence or notes
Record final dimensions, alignment, bolt tension/torque or other mechanical acceptance checks.
Add measurement, evidence or notes
Record proof, pressure, leak, function, load or performance testing where required.
Add measurement, evidence or notes
Record defects or punch-list items found during testing and how they were closed.
Add measurement, evidence or notes
Confirm that required inspection personnel and engineering reviewers have signed or accepted the relevant records.
Add measurement, evidence or notes
Confirm the final condition matches the accepted repair basis or has a documented engineering disposition.
Add measurement, evidence or notes
06
6. Return to service and close the repair
The repaired asset should re-enter service with a clear operating state and a complete future inspection basis.
Record formal approval or acceptance for return to service.
Add measurement, evidence or notes
Record temporary restrictions, reduced capacity, monitoring requirements or expiry dates that remain.
Add measurement, evidence or notes
Create follow-up inspection tasks and clearly define timing, method and acceptance trigger.
Add measurement, evidence or notes
Update drawings and asset records to show the as-built repaired configuration.
Add measurement, evidence or notes
Update maintenance instructions and spare-parts information where the repair changes future work.
Add measurement, evidence or notes
Record lessons learned and recurrence-prevention actions outside the repaired component itself.
Add measurement, evidence or notes
Compile the final dossier with an index, revision status and one accountable close-out owner.
Add measurement, evidence or notes
Store the dossier where future engineers, inspectors and maintainers can actually retrieve it.
Add measurement, evidence or notes
Overall notes
Record the final screening context
Note operating restrictions, missing documents, work orders, competent-person decisions or assumptions that affect the result.
04
Minimum useful attachment pack
The checklist is most useful when the evidence can travel with the request.
01
Original defect report, as-found photographs and damage location sketch.
02
Inspection and NDT reports establishing damage extent.
03
Engineering assessment, design basis, calculations and option decision.
04
Issued repair drawings, specifications and approved procedures.
05
Material, welding, fastener and fabrication quality records as applicable.
06
Deviation, nonconformance and engineering disposition records.
07
Final NDT, dimensional, proof, function or performance test results.
08
As-built drawing, return-to-service approval and future inspection requirements.
05
Five questions before you call it complete
1Can a future engineer understand the original defect and why this repair option was chosen?
2Does the dossier show what was actually installed, including approved deviations?
3Can every required inspection and test be traced to a result and acceptance decision?
4Are temporary restrictions and future inspections visible outside the repair report itself?
5Could the repair history be found quickly if similar damage appears again?
06
Common gaps and weak evidence
Drawing without assessment
The file shows what was welded in, but not the failure mechanism, required life or assumptions that made the repair acceptable.
Missed hold points
Critical surfaces or root details are covered before the specified inspection occurs, leaving no reliable evidence of acceptance.
Field redesign
Fit-up problems are solved informally by changing plate size, weld extent or sequence without engineering disposition.
No future control
A temporary repair returns to service, but its expiry, restrictions and inspection requirements are not embedded in the asset system.
AS Applied helps you gather the right information. Detailed assessment, repair design, modification design, verification and RPEQ services are provided through XPO Engineers.