Industrial maintenance, assembly and downtime management for plants and power stations in Switzerland and abroad
Lehmann Instandhaltungstechnik GmbH
SwitzerlandNew on Amplifa
About Lehmann Instandhaltungstechnik
Lehmann Instandhaltungstechnik GmbH (LIT) is a service provider specialising in industrial maintenance for plants and power stations. The company carries out assembly management, revisions, new installations, repairs and maintenance of plant components as well as preventive maintenance, annual services and tailor-made maintenance concepts. Core competencies include the revision and overhaul of turbines (Pelton, Francis), piping construction, welding and steel construction work in its own workshop, as well as the assembly and disassembly of heavy components such as spherical valves up to 50 tonnes. Quality assurance encompasses documentation, assessment of plant conditions, factory acceptance tests at suppliers and non-destructive testing. Customer industries include hydropower plants and renewable energies, power stations including nuclear power plants and interim nuclear storage facilities, industrial plants, mechanical and plant engineering, as well as chemicals, pharmaceuticals and food. The company is a member of the Cobinet corporate network with more than 30 technology companies, operates throughout Switzerland – especially in mountain regions – and abroad, and is led by founder Norman Lehmann.
- Site
- Switzerland
- Processes
- Industrial maintenance (maintenance, revision, reconditioning of plants and power stations), Assembly management / coordination of on-site assembly work incl. quality controls and monitoring, Service: revisions, new installations, repairs, maintenance of plant components, Quality assurance, documentation, assessment of plant conditions, factory acceptance tests at, Revision and reassembly of hydropower plants and industrial plants, Welding work (in-house workshop, welded constructions, e.g. for CO2 storage), Welding and steel construction work, Piping construction / piping of process plants and piping revisions
- Materials
- Welding work, Steel construction work, Piping construction, Non-destructive testing
- Certificates
- Non-destructive testing (PT, MT, UT), Factory acceptance tests at suppliers, Documentation and dimensional reports, ISO 9001
- Industries
- Hydropower plants and renewable energies, Power stations and energy generation, Nuclear power plants and interim nuclear storage facilities, Industrial plants, Mechanical and plant engineering, Chemical industry
- 01
Condition assessment and evaluation of plant condition
- 02
Work preparation and downtime management
- 03
Disassembly including heavy components
- 04
Repair, reconditioning and welding work (in-house workshop)
- 05
Assembly, alignment and levelling
- 06
Quality assurance, inspections and documentation
- 07
Functional testing and commissioning
Processes and Services
Welding work
In-house workshop for welded constructions, e.g. for CO2 storage.
Steel construction work
Welding and steel construction work for plants and load-bearing structures.
Piping construction
Piping of process plants and piping revisions in power stations and industry.
Non-destructive testing
Dye penetrant testing, magnetic particle testing and ultrasonic testing for defect detection on critical components.
Locations and Sites
Workshop (in-house)
CHWelding work and constructions
- Materials
- Steel
- Welding equipment
Customer assignments in Switzerland and abroad
CHAssembly, revision and on-site maintenance at power stations and industrial plants
- Part weight / size
- up to 50 t (spherical valve)
- Lot size
- Individual projects/revisions
- Materials
- Steel, plant components
- Lifting equipment
- Non-destructive testing equipment
- Measurement technology
Components and Parts
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Industrial maintenance (maintenance, revision, reconditioning of plants and power stations)Assembly | – | – | – | – | – |
| Assembly management / coordination of on-site assembly work incl. quality controls and monitoringAssembly | – | – | – | – | – |
| Service: revisions, new installations, repairs, maintenance of plant componentsAssembly | – | – | – | – | – |
| Quality assurance, documentation, assessment of plant conditions, factory acceptance tests atTesting | – | – | – | – | – |
| Revision and reassembly of hydropower plants and industrial plantsAssembly | – | – | – | – | – |
| Welding work (in-house workshop, welded constructions, e.g. for CO2 storage)Joining | – | – | – | – | – |
| Welding and steel construction workJoining | – | – | – | – | – |
| Piping construction / piping of process plants and piping revisionsAssembly | – | – | – | – | – |
| Disassembly of heavy components (e.g. spherical valve 50 tonnes, removal pipe, butterfly valve)Assembly | – | – | 50 tonnes (spherical valve disassembly) | – | – |
| Assembly and repair of Pelton runners as well as assembly of complex machines, pumps and plantsAssembly | – | – | – | – | – |
| Generator revision and generator repair in power stations (rotor, stator, bearings, seals)Assembly | – | – | – | – | – |
| Turbine revision and turbine overhaul (Pelton, Francis; runner, wicket gate, shaft, bearings)Assembly | – | – | – | – | – |
| Repair of mechanical plant components (shafts, bearing seats, fits, couplings, guideways)Assembly | – | – | – | – | – |
| Non-destructive testing: dye penetrant testing, magnetic particle testing, ultrasonic testingTesting | – | – | – | – | – |
| On-site heavy component assembly incl. lifting concept, load paths, alignment, levelling andAssembly | – | – | – | – | – |
| Downtime management and project/assembly management during power station conversionsEngineering | – | – | – | – | – |
| Plant conversions, retrofit and commissioning of machines, industrial and energy plantsAssembly | – | – | – | – | – |
| Assembly work in radioactive areas (nuclear power plants, interim nuclear storage facilities)Assembly | – | – | – | – | – |
Additional services
Quality
Quality assurance and documentation as well as the assessment of plant conditions are core areas of the company. It carries out factory acceptance tests at suppliers and uses non-destructive testing methods such as dye penetrant, magnetic particle and ultrasonic testing as well as dimensional reports.
| Evidence | Workshop (in-house) |
|---|---|
| Non-destructive testing (PT, MT, UT) | |
| Factory acceptance tests at suppliers | |
| Documentation and dimensional reports | |
| ISO 9001 |