Turbo Expander After Market Care

All-brand Turbo Expander Repairing Service

Field service maintenance of your turbo expander and control system is paramount to the continued long term reliability and performance.

We have highly trained and skilled mechanics and technicians, and supported by experts from NCS (Nikkiso Cryogenic Service).

Our repair philosophy is to return the assembly to the best condition for long reliable service and performance!

NCS’s Field Service

Nearly forty years of field experience
Fast mobilization to reduce down time
Field inspection of expander and controls
Where possible, field re-build of the expander is executed to minimize plant down time

General/Additional Services

Start up and commissioning assistance
Comprehensive problems diagnostics
Operational and maintenance training of customer’s personnel
Renewal and upgrades
Preventive maintenance & service plans
Expander and compressor wheel service

Typical tear down and repair evaluation includes:

Complete evaluation of all parts during disassembly
Thorough cleaning of all parts per NCS rigorous specifications
100% visual inspection of all parts with emphasis on detecting erosion, corrosion, deposition and other metallurgical evaluation
Assemble rotor and check balance
Clean and inspect all bearing housing porting
Upon completion, a detailed report including disassembly observations, photographs (if applicable), probable cause of failure and corrective action necessary are submitted to the customer
Detailed and itemized repair price including new parts, repaired parts and reassembly labor is submitted for customer approval

Detail measurement of all critical parts including:

Shaft – journal diameters, thrust faces
Wheel journals
Seal diameters
Check of electrical run-out at vibration probe sensing areas
Seals
- 　Measure seal bore for proper size and wear detection
- 　Inspect all porting for debris.

Expander and compressor wheel
- 　Fluorescent Penetrant (Zyglo) inspection for cracks
- 　Visual check for erosion
- 　Detailed measurement of bores
Variable inlet guide vanes (Nozzles):
- 　Inspect for wear against drive pins
- 　Check for galling or erosion damage

Bearings
- 　Disassemble and clean all bearings
- 　Inspect pad curvature
- 　Inspect thrust faces
- 　Measure pad thickness
- 　Reassemble or repair as required

Parts Service

Critical to the successful operation of an expander is the utilization of NCS spare parts and a key factor in protecting your
original investment.

A spare cartridge assembly (mechanical center section) is a critical component of a complete inventory program. Plant down time is reduced to a minimum with the spare cartridge assembly on-site.

NCS offers cartridge assembly, balanced rotor assembly, bearings, shaft seals, etc. All parts are manufactured to the highest industry standards and ISO 9001 quality standards.

If customers have the above parts needs, Taikkiso will provide perfect NCS quotations and sales services.

Other Maintenance Service