3 large pressure vessels were installed on seismic pedestals accessed by stairs and walkways to all levels with extensive Stainless and Carbon Pressure Piping.
Key Elements:
- 133,000 man-hours completed on the job.
- 25T of spooled stainless and carbon piping installed.
- 100T of structural steel.
- 90T of product vessels installed and commissioned. 3 off.
- Insulation of vessels along with all steam piping.
- 80T of lamella heating elements joined and installed.
- 9 hydro tests completed and passed.
- 12 months duration from start to finish.
Challenges:
- OJI procured vessels offshore along with structural support pedestals. These did not comply with NZ Seismic requirements. PFS carried out extensive stiffening bracing and upgrades to the pedestals.
- Geotechnical issues delayed the start of the works after PFS had mobilized a large team to install spooled piping. A positive solution was reached with the team to do extensive work upgrading other parts of the plant.
- To optimize off-site work on the free issue gear before work could commence on-site, OJI set PFS up in a large warehouse in Kawerau. This enabled PFS to expedite this work concurrently with pipe spooling in the PFS shop.
