Development of SGT-A35 GT61 (39 MW) for Oil and Gas Applications
Bibliographic record
Abstract
Abstract The SGT-A35 (previously known as Industrial RB211) aeroderivative gas turbine is derived from the Rolls-Royce RB211 aviation gas turbine and it has a fleet size of more than 800 units. It is a known reference in the oil and gas market for both offshore and onshore application with more than 46 million hours of operating experience. Since its entry into service in 1974, this gas turbine has gone through continuous improvement with advanced technologies for increased power output, cycle efficiency, reliability, and availability. The SGT-A35 GT61 is the current fourth-generation gas turbine which was introduced in 2001 and provides 34 MW. The new fifth generation SGT-A35 GT61 (39 MW) is the latest and most significant development in the Siemens Energy aeroderivative gas turbine product portfolio. The design changes were limited to cold section of the gas turbine. This includes addition of stage zero to the intermediate pressure compressor, newly designed variable inlet guide vane, variable stator vanes, and minor redesign to other compressor stages. These changes increased the flow capacity and greater than 10% increase in shaft power is achieved. No changes to the hot section has been implemented to maintain the industry class reliability and to keep the fleet experience relevant. This paper provides the details on how the new fifth generation SGT-A35 variant was developed and verified. An extensive engine test program was completed at Siemens Energy facilities to verify all critical-to-quality attributes and to mitigate technical risks before the entry to service. In addition to the design details, results from the development test campaign are presented. The test exceeded the expectations and provided valuable data for further optimization of the product performance.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.006 | 0.003 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".