Ultrasonic testing
Assessment of ring volume and internal areas. The procedure defines the techniques and coverage applicable to the ring geometry.
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MEXICO · PLANNED SPECIALIST SERVICES
Generator retaining ring inspection
Assess retaining ring condition before defining the next rotor intervention. TEMISA Power Gen® coordinates technical review and scheduling with specialist inspection teams.
Request early. Scope and dates confirmed after technical review.
What does this inspection assess?
Retaining ring inspection uses non-destructive testing to assess internal and surface indications. The rotor and rings may remain installed where geometry and access allow. Feasibility is confirmed for each generator.
Eddy current testing
Examination of the accessible outer surface, complementary to ultrasonic assessment.
Indication assessment
Records of location, coverage and limitations support technical review and the next maintenance decision.
PLANNED INSPECTIONS
Contact us before you finalize the outage
This is a planned specialist service. Contact TEMISA as early as possible so we can review the machine, define scope and coordinate equipment, personnel and logistics. An enquiry does not reserve a date.
- 01
Request early
Share manufacturer, model, rating, site, inspection objective and proposed outage dates before finalizing the plant schedule.
- 02
Review feasibility
We review drawings, photographs, history and access. We identify missing information and the specialists and equipment required.
- 03
Agree scope and dates
The proposal defines tests, deliverables, exclusions, responsibilities and schedule. Mobilization requires confirmed availability and commercial conditions.
- 04
Prepare and execute
The site provides agreed access and equipment release. The team verifies readiness, coordinates other work and records the actual test coverage.
- 05
Report and plan next steps
Findings, limitations and recommendations are delivered on the agreed timetable. Further tests or repairs are scoped separately.
What determines lead time?
Machine geometry, completeness of technical information, specialist and equipment availability, site preparation, location and travel or customs requirements. The proposal separates preparation, testing, reassembly and reporting; test duration is not total outage duration.
Information to start the review
- Manufacturer, model, rating, location and proposed outage window.
- Ring drawings and dimensions; material and history where available.
- Photographs of both ends, access and obstructions.
- Previous reports, known indications and reason for inspection.
Expected deliverables
- Report of examined areas, techniques and limitations.
- Indication records and locations within the agreed scope.
- Technical review and recommendations for additional assessment or monitoring.
Inspection does not include ring repair or replacement. A structural integrity or remaining-life study, if required, is scoped separately.
Coordination in Mexico; Latin America assessed by project
For sites outside Mexico, TEMISA reviews location, access, specialist availability, travel and customs requirements before confirming a programme. Scope, dates and report delivery are agreed in the proposal.
Before scheduling
Is ring inspection the same as stator inspection?
No. Retaining rings are rotor components. Ring inspection and robotic stator inspection use different equipment and serve different purposes, although both can be coordinated during one outage.
Is inspection without rotor removal guaranteed?
No. Keeping the rotor and rings installed depends on geometry, access and the procedure. Feasibility is confirmed before scope is committed.
How far in advance should I request the service?
Contact us during outage planning, before finalizing the schedule. Lead time is confirmed after reviewing technical information, scope, access, specialists, equipment and logistics. There is no single lead time for every machine.
Does an enquiry reserve an inspection date?
No. An enquiry starts the assessment. Mobilization is scheduled once scope, commercial conditions, availability and required site preparation are confirmed.
Can several tests be coordinated during one outage?
Yes, subject to feasibility and availability. We define the sequence and work interfaces; combining services does not mean they can all run simultaneously.
COORDINATED OUTAGE SERVICES
Define the evidence your generator needs
Robotic stator inspection
Low-flux core testing, wedge tightness and visual records.
Review scope →Generator stator end-winding bump testing
Natural-frequency and impact-response assessment of generator end windings. Arrange your technical review with TEMISA ahead of the outage.
Review scope →Stator and rotor electrical diagnostics
A test programme defined for the machine and the diagnostic objective.
Review scope →Start with your machine and your outage window
Share the available information. We will identify the next technical review step.
Request technical assessment →