Mechanical assembly & FAT testing
First In Service assembles and commissions complete mechanical systems rather than shipping loose parts: precision bearing installations, hydraulic and electrical integration, and FAT-tested modules delivered ready to install. Assembly runs in the same 18,000 m² Tallinn workshop that fabricated and machined the components, with the full Manufacturing Data Record handed over at delivery.
We deliver working systems, not a box of parts.
Complex assemblies and fully FAT-tested modules for industrial applications, from precision bearing installations to fully commissioned units. Each one is assembled, verified and delivered with full documentation.
Scope
Testing
Documentation (MDR)
Specifications at a glance
| Mechanical assembly | Precision bearing installations, structural assembly |
|---|---|
| Electrical integration | Panel wiring, control integration |
| Hydraulic integration | System assembly and pressure testing |
| Commissioning | System verification prior to delivery |
| FAT | Factory acceptance testing, full protocol |
| Pressure testing | Hydraulic and pneumatic systems |
| Material certificates | EN 10204 3.1, 3.2 on request |
| NDT reports | VT, PT, MT, UT via certified partners |
| Dimensional logs | Full inspection record |
| FAT protocols | Complete test documentation |
Questions procurement teams ask
What kind of assemblies do you deliver?
Complex mechanical, electrical, and hydraulic assemblies, from precision bearing installations to fully commissioned, ready-to-install units.
What is FAT testing and do you provide it?
Factory acceptance testing (FAT) verifies that a module works correctly before it leaves our workshop. We deliver fully FAT-tested modules with complete test protocols.
What documentation is included with an assembled unit?
A full Manufacturing Data Record (MDR): material certificates (3.1/3.2), NDT reports, dimensional logs, and FAT protocols.
Can you handle electrical and hydraulic integration, not just mechanical?
Yes. Our assembly scope covers mechanical assembly, electrical panel wiring, and hydraulic integration with pressure testing.
Do you commission the system before delivery?
Yes, where the scope requires it. We assemble, verify and commission before delivery, so the unit arrives ready to install.
Why assembly is an engineering discipline in its own right
The difference between a box of correct parts and a working system is everything that happens in assembly: bearing seats measured and matched before installation, torque sequences that load a structure evenly, hydraulic circuits flushed to cleanliness class before first pressurisation, and electrical systems point-tested against the schematic rather than assumed from it. Our assembly team plans the sequence in advance, including tooling, lifting and quality hold points, so the build follows a written procedure rather than improvisation.
Factory acceptance testing is where any ambiguity in scope gets resolved. We agree the FAT protocol with you before assembly starts: what is tested, to what acceptance criteria, witnessed by whom. When the unit passes, you have documented proof of function before transport risk and site-installation variables enter the picture, which is precisely the point of testing at the factory.
The delivered package is a commissioned unit and its Manufacturing Data Record: material certificates, NDT reports, dimensional logs, and signed FAT protocols. Installation-ready means your site team bolts it down and connects it, not that they finish building it.
Where this capability goes to work.
Marine, offshore & subsea
Commissioned deck equipment and propulsion assemblies.
Marine, offshore & subsea →The same facility, with the evidence each sector asks for.
Rotating parts & shafts
Impellers, casings, rotors, shafts and turbine housings to ±0.02 mm.
Rotating parts & shafts →Mining & machine building
Crusher frames, conveyor structures and wear-resistant steel assemblies.
Mining & machine building →Ready to discuss your project?
Send your drawings and specifications. We reply within 1 working day and send a firm quote within five working days.
Request a quoteBook a 20-minute call →Download capability overview (PDF)