elecmaint / equipment inspection record
Transformer Maintenance Checklist
Engineer name
Date
Work scope & measurement context (optional record fields)
References only. This site supplies no acceptance values, test settings, intervals or release instructions. Selecting a scope does not authorize work. Use Remarks for row-specific context; refer to original files, which are not uploaded here.
Draft · technical review pending. Recording prompts only; not procedures or acceptance criteria. Work and access require your approved plan. No normal ranges, pass/fail values, test settings or maintenance intervals are supplied. Condition results are user-entered judgements under separately approved criteria. Evidence/task/measurement OK means the specified record is complete, not healthy equipment. This checklist does not authorize release to service. Unit selection does not convert values.
Research context & source scope
- USBR FIST technical library — Hydropower maintenance reference library; check edition and installation applicability.
These links do not validate every checkpoint. Technical approval pending; identify the exact applicable manual and work plan.
How to read this form
- As-found observation
- Describe what was observed. OK / Not OK are unavailable.
- Condition
- OK = User assessment under the referenced approved criteria.
- Measurement record
- OK = Required measurement record and context are complete.
- Evidence check
- OK = Required reference or evidence is verified.
- Task record
- OK = The specified recording task is complete.
- Blank / Pending / N/A
- Blank is unclassified. Pending identifies missing checks, evidence or criteria. N/A needs a reason in Remarks.
No row or completed form certifies safety, compliance or fitness for service.
Engineer/date/signature spaces remain for handwriting. Multiple records can be saved locally in this browser and exported; no cloud backup, file attachments or team approval is provided. Older template records stay separate and are not reinterpreted. Keep sensitive information off shared devices.
0 of 81 checkpoints recorded
Compare with an earlier saved inspection
Enter the same Equipment ID, Site and installed-asset identity / serial reference. Only the same template revision is compared. Context and units are shown without conversion or condition verdicts.
Records on hand & preparation
Record the documents and scope available for this inspection. Recording completion is not work authorization.
1
Record equipment identity, subtype, model and maintenance scopeTask record · OK = The specified recording task is complete
2
Review previous inspection, repair and original test recordsTask record · OK = The specified recording task is complete
3
Record operating events, known defects and outstanding follow-upTask record · OK = The specified recording task is complete
4
Reference current manufacturer maintenance instructions and approved work controlsTask record · OK = The specified recording task is complete
5
Record approved methods and instrument/calibration references for planned testsTask record · OK = The specified recording task is complete
6
Identify fitted parts, maintenance exclusions and baseline comparison conditionsTask record · OK = The specified recording task is complete
| No. | Checkpoint | Value / observation | OK | Not OK | N/A | Remarks |
|---|---|---|---|---|---|---|
| 7 | Visible coating damage, corrosion or impact marks — locations and appearanceAs-found observation · Description only | — | — | |||
| 8 | Door, seal, latch and cover appearance within approved accessAs-found observation · Description only | — | — | |||
| 9 | Visible moisture, condensation or contamination — location and appearanceAs-found observation · Description only | — | — | |||
| 10 | Accessible mounting and support appearance — location of visible damageAs-found observation · Description only | — | — | |||
| 11 | Enclosure inspection and ingress-control record — attach the approved report with method, conditions and source reference; only if in scopeEvidence check · OK = Required reference or evidence is verified | |||||
| 12 | Maintenance follow-up for enclosure & structure: change from baseline, service/replacement performed and unresolved defect referenceEvidence check · OK = Required reference or evidence is verified |
| No. | Checkpoint | Value / observation | OK | Not OK | N/A | Remarks |
|---|---|---|---|---|---|---|
| 13 | Fluid type, compartment and service record are identifiedEvidence check · OK = Required reference or evidence is verified | |||||
| 14 | As-found fluid leakage or staining — location and appearance; do not infer severityAs-found observation · Description only | — | — | |||
| 15 | Fluid level indication as found — compartment, gauge indication and load/temperature contextAs-found observation · Description only | — | — | |||
| 16 | Sampling and laboratory records preserve sample point, date and methodEvidence check · OK = Required reference or evidence is verified | |||||
| 17 | Oil temperature indication at the identified sensor; retain operating contextMeasurement record · OK = Required measurement record and context are complete | |||||
| 18 | Approved fluid laboratory report; retain original quantities and units — attach the approved report with method, conditions and source reference; only if in scopeEvidence check · OK = Required reference or evidence is verified | |||||
| 19 | Maintenance follow-up for insulating-fluid system: change from baseline, service/replacement performed and unresolved defect referenceEvidence check · OK = Required reference or evidence is verified |
| No. | Checkpoint | Value / observation | OK | Not OK | N/A | Remarks |
|---|---|---|---|---|---|---|
| 20 | Winding and phase identification match the reviewed nameplate/drawingEvidence check · OK = Required reference or evidence is verified | |||||
| 21 | Accessible winding insulation and lead support condition are documentedEvidence check · OK = Required reference or evidence is verified | |||||
| 22 | Winding thermal or overload event history is recordedEvidence check · OK = Required reference or evidence is verified | |||||
| 23 | Test reports identify tap, winding pair, temperature and instrumentEvidence check · OK = Required reference or evidence is verified | |||||
| 24 | Approved winding-resistance report — attach the approved report with method, conditions and source reference; only if in scopeMeasurement record · OK = Required measurement record and context are complete | |||||
| 25 | Maintenance follow-up for windings: change from baseline, service/replacement performed and unresolved defect referenceEvidence check · OK = Required reference or evidence is verified |
| No. | Checkpoint | Value / observation | OK | Not OK | N/A | Remarks |
|---|---|---|---|---|---|---|
| 26 | Accessible core and clamp appearance from approved observation or source reportAs-found observation · Description only | — | — | |||
| 27 | Core earth connection drawing and inspection evidence are referencedEvidence check · OK = Required reference or evidence is verified | |||||
| 28 | As-found heat marks, displaced components or reported vibration — location and sourceAs-found observation · Description only | — | — | |||
| 29 | Shipping/repair records identify any core or clamp workEvidence check · OK = Required reference or evidence is verified | |||||
| 30 | Core and clamping inspection report — attach the approved report with method, conditions and source reference; only if in scopeEvidence check · OK = Required reference or evidence is verified | |||||
| 31 | Maintenance follow-up for core & clamping: change from baseline, service/replacement performed and unresolved defect referenceEvidence check · OK = Required reference or evidence is verified |
| No. | Checkpoint | Value / observation | OK | Not OK | N/A | Remarks |
|---|---|---|---|---|---|---|
| 32 | Accessible insulation surfaces are checked for cracking and trackingCondition · OK = User assessment under the referenced approved criteria | |||||
| 33 | Moisture, contamination and discharge marks are documentedEvidence check · OK = Required reference or evidence is verified | |||||
| 34 | Insulating barriers and separation discrepancies are recordedEvidence check · OK = Required reference or evidence is verified | |||||
| 35 | Insulation test reports identify connected equipment and test conditionsEvidence check · OK = Required reference or evidence is verified | |||||
| 36 | Approved equipment-specific insulation report — attach the approved report with method, conditions and source reference; only if in scopeMeasurement record · OK = Required measurement record and context are complete | |||||
| 37 | Maintenance follow-up for insulation system: change from baseline, service/replacement performed and unresolved defect referenceEvidence check · OK = Required reference or evidence is verified |
| No. | Checkpoint | Value / observation | OK | Not OK | N/A | Remarks |
|---|---|---|---|---|---|---|
| 38 | Terminal and conductor identity match the reviewed connection drawingEvidence check · OK = Required reference or evidence is verified | |||||
| 39 | Visible terminal discoloration, heat marks or insulation damage — terminal identificationAs-found observation · Description only | — | — | |||
| 40 | Accessible conductor support and strain-relief appearance — locationAs-found observation · Description only | — | — | |||
| 41 | Approved torque/service evidence is referenced without inferring a torque valueEvidence check · OK = Required reference or evidence is verified | |||||
| 42 | Approved connection-resistance report — attach the approved report with method, conditions and source reference; only if in scopeMeasurement record · OK = Required measurement record and context are complete | |||||
| 43 | Maintenance follow-up for power connections: change from baseline, service/replacement performed and unresolved defect referenceEvidence check · OK = Required reference or evidence is verified |
| No. | Checkpoint | Value / observation | OK | Not OK | N/A | Remarks |
|---|---|---|---|---|---|---|
| 44 | Bushing identity and phase/location are recordedEvidence check · OK = Required reference or evidence is verified | |||||
| 45 | Porcelain/polymer surfaces show documented cracks, chips or contaminationEvidence check · OK = Required reference or evidence is verified | |||||
| 46 | Oil level indications, seals and flange leak observations are recorded where fittedEvidence check · OK = Required reference or evidence is verified | |||||
| 47 | Test tap cap/grounding and diagnostic report references are documentedEvidence check · OK = Required reference or evidence is verified | |||||
| 48 | Approved bushing-specific diagnostic report; retain method and original units — attach the approved report with method, conditions and source reference; only if in scopeEvidence check · OK = Required reference or evidence is verified | |||||
| 49 | Maintenance follow-up for bushings: change from baseline, service/replacement performed and unresolved defect referenceEvidence check · OK = Required reference or evidence is verified |
| No. | Checkpoint | Value / observation | OK | Not OK | N/A | Remarks |
|---|---|---|---|---|---|---|
| 50 | Tap changer model, position and operation count are recordedEvidence check · OK = Required reference or evidence is verified | |||||
| 51 | Drive cabinet, linkage and position indication condition are documentedEvidence check · OK = Required reference or evidence is verified | |||||
| 52 | Separate oil compartment and filter records are referenced where fittedEvidence check · OK = Required reference or evidence is verified | |||||
| 53 | Limit, interlock and tap position verification reports are attachedEvidence check · OK = Required reference or evidence is verified | |||||
| 54 | Tap operation counter reading from the identified mechanismMeasurement record · OK = Required measurement record and context are complete | |||||
| 55 | Approved tap-position and mechanism verification report — attach the approved report with method, conditions and source reference; only if in scopeEvidence check · OK = Required reference or evidence is verified | |||||
| 56 | Maintenance follow-up for tap changer: change from baseline, service/replacement performed and unresolved defect referenceEvidence check · OK = Required reference or evidence is verified |
| No. | Checkpoint | Value / observation | OK | Not OK | N/A | Remarks |
|---|---|---|---|---|---|---|
| 57 | As-found ventilation openings, filters and visible air-path obstructions — locationAs-found observation · Description only | — | — | |||
| 58 | Cooling fan operating indication at arrival; use Remarks for noise, damage and observation sourceAs-found observation · Description only | — | — | |||
| 59 | Cooling stage control and alarm evidence are referenced where fittedEvidence check · OK = Required reference or evidence is verified | |||||
| 60 | Ambient/load context and sensor location accompany temperature recordsEvidence check · OK = Required reference or evidence is verified | |||||
| 61 | Cooling-system temperature at the identified measurement locationMeasurement record · OK = Required measurement record and context are complete | |||||
| 62 | Cooling-system functional or temperature report — attach the approved report with method, conditions and source reference; only if in scopeMeasurement record · OK = Required measurement record and context are complete | |||||
| 63 | Maintenance follow-up for cooling & ventilation: change from baseline, service/replacement performed and unresolved defect referenceEvidence check · OK = Required reference or evidence is verified |
| No. | Checkpoint | Value / observation | OK | Not OK | N/A | Remarks |
|---|---|---|---|---|---|---|
| 64 | Protective device identity and approved settings revision are recordedEvidence check · OK = Required reference or evidence is verified | |||||
| 65 | Trip, alarm and interlock reports identify the functions actually testedEvidence check · OK = Required reference or evidence is verified | |||||
| 66 | Any inhibited function, override or temporary setting is documentedEvidence check · OK = Required reference or evidence is verified | |||||
| 67 | Review/disposition references for protection discrepancies are retainedEvidence check · OK = Required reference or evidence is verified | |||||
| 68 | Approved protection and interlock verification report — attach the approved report with method, conditions and source reference; only if in scopeEvidence check · OK = Required reference or evidence is verified | |||||
| 69 | Maintenance follow-up for protection & interlocks: change from baseline, service/replacement performed and unresolved defect referenceEvidence check · OK = Required reference or evidence is verified |
| No. | Checkpoint | Value / observation | OK | Not OK | N/A | Remarks |
|---|---|---|---|---|---|---|
| 70 | Protective earth and bonding conductor identification is recordedEvidence check · OK = Required reference or evidence is verified | |||||
| 71 | Accessible bonds, clamps and joints show documented conditionEvidence check · OK = Required reference or evidence is verified | |||||
| 72 | Missing conductors, corrosion and mechanical damage are recordedEvidence check · OK = Required reference or evidence is verified | |||||
| 73 | Reviewed earth drawing and continuity measurement locations are referencedEvidence check · OK = Required reference or evidence is verified | |||||
| 74 | Approved bonding-continuity report — attach the approved report with method, conditions and source reference; only if in scopeMeasurement record · OK = Required measurement record and context are complete | |||||
| 75 | Maintenance follow-up for grounding & bonding: change from baseline, service/replacement performed and unresolved defect referenceEvidence check · OK = Required reference or evidence is verified |
| No. | Checkpoint | Value / observation | OK | Not OK | N/A | Remarks |
|---|---|---|---|---|---|---|
| 76 | Attach original reports, photographs and manufacturer-document referencesTask record · OK = The specified recording task is complete | |||||
| 77 | Record units, method, conditions and instrument identity for each entered resultTask record · OK = The specified recording task is complete | |||||
| 78 | Explain excluded or inapplicable parts and missing evidenceTask record · OK = The specified recording task is complete | |||||
| 79 | Record discrepancies and assign follow-up owner and due-date referenceTask record · OK = The specified recording task is complete | |||||
| 80 | Record qualified review and separately authorized dispositionTask record · OK = The specified recording task is complete | |||||
| 81 | Reference restoration or release records; this checklist does not authorize releaseTask record · OK = The specified recording task is complete |
Engineer signature
Reviewer / reference
elecmaint.com · Template V6 · 81 checkpoints · No automatic condition assessment. OK does not certify safety or fitness for service. N/A requires an explanation; unknown/unverified items remain unclassified.