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TASNII Engineering
Case studies

Client cases. Real numbers.

A selection of representative interventions — FPSO inspections, pump overhaul, rotating equipment maintenance, reverse engineering, manufacturing, EPC and supervision. Client names remain confidential by default; full references shared on request.

Oil & GasQA/QC Inspection
6 weeks

FPSO inspections — FAT supervision, LV-MV equipment, documentation review

Problem

Inspection campaign on an FPSO requiring FAT supervision of low- and medium-voltage (LV-MV) electrical packages and a complete documentation review before sailaway.

Solution

API-certified inspectors mobilised, FAT supervision and witnessing, LV-MV equipment inspection, technical dossier and certificate review, punch-list management and real-time client reporting.

Result

18 FATs witnessed, 45 LV-MV equipment items inspected and 120+ documents reviewed. Sailaway cleared with no major non-conformity.

FAT supervised
18
LV-MV equipment
45
Documents reviewed
120+
Major non-conformities
0
Oil & GasRotating Maintenance
21 days

Pump overhaul — turnaround achieved

Problem

A fleet of process pumps to overhaul within a tight turnaround window, without exceeding the unit restart date.

Solution

Strip-down and assessment, dimensional control, wear-part replacement, dynamic balancing, reassembly, performance testing and a documented intervention dossier.

Result

34 process pumps stripped, assessed and returned to service in 21 days, within the turnaround window. Zero rework, availability fully restored.

Pumps overhauled
34
Turnaround
21 days
Rework
0
Availability
100%
EnergyPredictive Maintenance
Commissioning

4-stage steam turbine — diagnostic & commissioning monitoring

Problem

Commissioning of a 4-stage steam turbine requiring full vibration monitoring and dimensional QA on rotor, bearings and seals before load start-up.

Solution

Complete diagnostic inspection, vibration measurements on all bearings, commissioning monitoring at each speed plateau, dynamic rotor behaviour validation and stage-seal checks.

Result

Load start-up without incident, vibration curves compliant with OEM specifications, commissioning dossier delivered with preventive maintenance plan recommendations.

Turbine stages
4
Vibration points
All bearings
Load start-up
OK
Type
Commissioning
Oil & GasReverse Engineering
Full study

Reverse engineering of a rotor blade set — turbo expander

Problem

Turbo expander rotor blades to remanufacture with no OEM drawings available and no OEM stock. Complex geometry, tight aerodynamic tolerances, material to validate.

Solution

High-resolution 3D scanning using Hexagon RS6 (7-axis arm), mesh reconstruction in Geomagic Design X, conversion to a parametric SolidWorks model, PMI material analysis, tolerance manufacturing drawings.

Result

Manufacturing drawings validated, material identified and qualified, complete technical dossier handed over to launch manufacturing.

Scanner
Hexagon RS6
CAD
SolidWorks
Part
Rotor blades
Material validation
PMI
Oil & GasManufacturing & Supply
Managed subcontracting

Manufacturing of a rotor blade set in Waspaloy

Problem

Re-manufacturing of Waspaloy blades — a nickel-chromium high-temperature superalloy — requiring controlled 5-axis CNC machining, an aerodynamic surface finish and strict dimensional control.

Solution

Certified Waspaloy material sourcing, selection of a qualified 5-axis workshop, manufacturing management with in-process inspection, bench dimensional control, final validation by 3D measurement.

Result

Blade set delivered to drawing specifications with full quality dossier (material certificate, machining reports, dimensional measurements).

Material
Waspaloy
Machining
5-axis CNC
Part
Rotor blades
Quality dossier
Full
Oil & GasRotating Maintenance
In-house workshop

Assembly and balancing of a turbo expander rotor

Problem

Reassembly and balancing of a turbo expander rotor at the TASNII repair centre, with residual unbalance control per manufacturer specifications.

Solution

Blade assembly onto the shaft, dimensional control, dynamic bench balancing, natural frequency checks, final validation and packaging.

Result

Rotor balanced within the required ISO class, ready for shipment with complete inspection and residual unbalance dossier.

Location
TASNII centre
Process
Dynamic balancing
Part
Expander rotor
ISO class
Compliant
Oil & GasManufacturing & Supply
Custom

Custom containers for rotor transport and storage

Problem

Long-term transport and storage of critical rotors requiring precise blocking, corrosion protection and preservation of balancing during handling.

Solution

Design and manufacturing of custom containers: reinforced steel frame, blocking adapted to the rotor geometry, sealing, anti-corrosion treatment and handling signage.

Result

Turnkey solutions delivered, ensuring rotor mechanical integrity from workshop to installation site.

Type
Custom
Frame
Reinforced steel
Protection
Anti-corrosion
Target
Critical rotors
EnergyReverse Engineering
Full RE

Energy Recovery system — Ceramic

Problem

Technical ceramic energy recovery system to digitize and reproduce — brittle material, complex geometry, no documentation available.

Solution

Non-contact 3D scanning on Hexagon RS6, mesh processing in Geomagic Design X, parametric modelling in SolidWorks, detailed drawings and complete BOM.

Result

Faithful parametric 3D model delivered, ready for modification and manufacturing, scan dossier archived for future use.

Material
Ceramic
Application
Energy recovery
Output
Parametric CAD
Family
Reverse engineering
EnergyReverse Engineering
RE & manufacturing

Steam turbine manual control rod — Inox 410

Problem

Manual control rod for a steam turbine in Inox 410 — out-of-stock OEM part requiring strict dimensional fidelity (fits, threads, seats) and qualified material.

Solution

Dimensional survey and 3D scan, tolerance manufacturing drawing, certified Inox 410 sourcing, CNC machining, conforming heat treatment, dimensional control and TASNII marking.

Result

Part delivered conforming to original interfaces, commissioned without additional adjustment.

Material
Inox 410
Part
Control rod
Application
Steam turbine
Output
Delivered part
Food & beverageReverse Engineering
RE & manufacturing

Food extruder — process parts in Inox 304

Problem

Food extruder with several Inox 304 process parts to be remanufactured under hygienic constraints (surface finish, no dead zones) and material traceability.

Solution

3D scanning of existing parts, accurate CAD reconstruction, detailed multi-view TASNII drawings, food-certified Inox 304 sourcing, manufacturing and conforming finishing, dimensional control.

Result

Parts batch delivered with full dossier, machine back in production without throughput modification.

Material
Inox 304
Application
Food extruder
Drawings
Multi-view
Compliance
Hygienic
Oil & GasReverse Engineering
RE & batch

Turbo expander flange head bolt — Inox 410

Problem

Turbo expander flange head bolts to be remanufactured in batch — high mechanical requirements, high-temperature creep and tension, mandatory material traceability.

Solution

Detailed Inox 410 manufacturing drawing (threads, seats, fillets), certified material sourcing, managed batch machining, 100% dimensional control.

Result

Complete batch delivered with material certificates and dimensional report, ready for fitting on scheduled shutdown.

Material
Inox 410
Part
Flange bolt
Production
Batch
Inspection
100% batch
Oil & GasReverse Engineering
Full RE

Turbo expander blade — Waspaloy

Problem

Waspaloy turbo expander blade to redesign: complex 3D aerodynamic profile, certified material identification and strict tolerancing.

Solution

High-density scan, surface reconstruction in Geomagic Design X, SolidWorks parametric model, tolerance drawings, PMI material validation.

Result

Complete manufacturing dossier delivered, model archived for further serial production.

Material
Waspaloy
Part
Turbo blade
Model
Parametric
Validation
PMI
Oil & GasManufacturing & Supply
Managed subcontracting

Subcontracted manufacturing — turbo expander blades

Problem

Serial production of turbo expander blades to be outsourced, requiring a qualified 5-axis workshop, precision vises and strict quality follow-up.

Solution

Qualified workshop selection, vise mounting, 5-axis CNC machining, in-process inspection and TASNII final control, documented delivery.

Result

Blade batch delivered to drawing, ready for rotor assembly and balancing.

Process
5-axis CNC
Part
Turbo blades
Management
TASNII
Output
Batch delivered
Water & desalinationEPC & Projects
11 months

EPC pumping station — desalination plant

Problem

Construction of a high-pressure pumping station for a desalination plant, complete mechanical lot. 6 process pumps, instrumentation, piping, commissioning.

Solution

Detailed engineering, international procurement (Fisher pumps, instrumentation), skid and piping manufacturing in managed subcontracting, site supervision, FAT and SAT.

Result

Successful commissioning at T+11 months (contractual T+12). No major defect at SAT. O&M maintenance contract signed in the wake.

Contractual deadline
12 months
Delivery
11 months
Process pumps
6
SAT defects
0
Oil & GasQA/QC Inspection
3 days

Gas instrumentation skid FAT inspection

Problem

Critical FAT for gas instrumentation skid at Asian supplier. End client requires API 510 + ASME IX inspector present at 100% of the test.

Solution

D+3 mobilization at supplier site. Welding verification, hydrotest, functional, instrumentation calibration. Real-time client reporting.

Result

FAT validated with 3 minor reserves cleared on site. Skid delivered conforming specifications, zero SAT defect.

Mobilization
D+3
FAT duration
3 d
Major reserves
0
SAT defects
0
PetrochemicalsStaffing
21 days

Refinery shutdown reinforcement — 40 profiles

Problem

Scheduled refinery shutdown requiring reinforcement of 40 technical profiles (technicians, inspectors, supervisors) mobilized simultaneously.

Solution

Sourcing in the qualified pool, client validation, mobilization logistics (visa, travel, PPE, accommodation), mission follow-up, final report.

Result

100% profiles mobilized on D0. Zero safety incident. Shutdown closed on time. Contract renewed for next shutdown.

Profiles mobilized
40
Mobilization rate
100%
HSE incidents
0
Renewal
Yes
Oil & GasOEM partnerships
14 weeks

Fisher pumping train supply — Southern Algeria

Problem

Oil & Gas operator in Algeria seeks a 4-pump API 610 train with short contractual deadline and local commissioning support.

Solution

On-site application qualification, Fisher Pumps quote, manufacturing follow-up with in-process inspection, transport, FAT, Algeria delivery, TASNII commissioning.

Result

Pumps delivered within 14 weeks (vs 22 weeks estimated direct purchase). Commissioning without incident, maintenance contract signed.

Lead vs direct
−36%
Pumps delivered
4
Commissioning defects
0
O&M contract
Yes

Representative figures within the TASNII Engineering scope. Named case studies shared under NDA.

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