Terminal Vertical Turbine Fire Pump Repair




CUSTOMER:

Import / Export Terminal


JOB OVERVIEW:

An Import / Export Terminal vertical turbine fire pump, driven by hydraulic motor, seized during routine testing. This pump was approximately six years old when it failed which, is much earlier than expected.


CHALLENGES

  • Pump was contaminated heavily with marine growth and silt.

  • Aluminium - Bronze wear rings (fitted to Duplex SS casings) have corroded badly and eventually come loose and gripped onto the impellers.

  • Carbon bearings were worn from contaminants.

  • Impellers were seized onto the turbine shaft. The shaft needed to be cut and bored out of the impellers.

  • Long lead times on some OEM supplied parts.


SOLUTION:

  • Pump was fitted with new FLUON wear ring material which is a carbon/PTFE composite and not prone to corrosion like the Aluminium-Bronze.

  • Thordon SXL journal bearings were fitted to improve wear life.

  • New shaft and shaft couplings made in house from Duplex SS.

  • Mechanical seal and thrust pot assembly repaired in-house

  • Pump was returned to service within 6 weeks from removal from service due to a combination of local manufacturing and prompt receipt of OEM parts.

  • Pump was re-installed and commissioned by IndustriTech field technicians.

  • Performance of pump was back to OEM specifications and statutory testing by third party was satisfied.