Orlan — offshore drilling platform
Currently, the Orlan platform is successfully operating at the Chaivo field. Interestingly, it was previously called "Glomar Beaufort Sea". Initially, the platform was operated by ExxonMobil off the coast of Alaska. However, in 2001 it was relocated to Russia. After transportation to Sovetskaya Gavan, the platform underwent modernization. It is especially important that its foundation was completely redesigned by Russian specialists.
Customer: SMNG "Shelf"
| Working period | Description of works | Results |
|---|---|---|
| December 2024 — May 2025 | Diagnostics and setup of the UNITROL 1000 excitation system • Equipment: — 5 main DES + 1 emergency (EDES) — Unitrol 1000 excitation systems — Generator switches ABB HEC-8 • Accomplished work: ✔ Calibration of protection settings (115% Inom instead of 125%) ✔ Frequency synchronization (±0.25 Hz) ✔ 72-hour continuous operation test | Frequent false alarms of the maximum current protection (MTZ) at load >85% have been eliminated As a result, stable parallel operation of the emergency and main power stations was ensured. |
| December 2024 — June 2025 | Replacing the CPU 140 controller in the DSU • Equipment: — Board: ABB CPU 140 434 12A — Operating temperature: -40°C...+70°C — Interface: Profibus DP • Accomplished work: ✔ Diagnostics (error codes E012, E147) ✔ Replacement with a new board with FW 3.4.1 ✔ Testing: Load testing (110% power), Response check (<500 ms) | The generator control system has been restored to working order |
