Normal
Stages Of Inspection For
Fabricated
Equipments like Reactors/Heat Exchangers/Columns/Pressure Vessels
- Approval of detailed fabrication drawings submitted
by vendor/client. Discuss and confirm schedule of work and review progress.
- Material identification based on Mill Certificates
or testing at Laboratories.
- Stamp transfer on all pressure parts.
- Testing and approval of welding procedures and
welders.
- Approval of Electrodes, Filler Wires and other
welding consumables, etc.
- All set ups of long seams, circumferential seams and
back chips, etc.
- Dishes after forming.
- Set ups of all nozzles, manways, hand hole pads,
etc., and back chips of the same. Checking of critical dimensions for
matching parts of agitators.
- Viewing of Radiographs, heat treatment procedures
and any
other NDT/DT.
- Checking of Tube Sheets with GO and NO GO Gauges for
tube hole tolerances, Ligaments, Grooves, etc.
- Mock up test to approve expansion of Tube to Tube
Sheet joints and welding of tube to tube sheet.
- Dynamic balancing of Agitator shaft above 100 RPM
and static balancing of shafts below 100 RPM alongwith anchors / impellers,
etc.
- Running trials outside the vessel and measuring
deflection with dial gauge for agitators.
- Running trials inside the vessel at operating
pressures.
- Hydraulic test, pneumatic test, vacuum test as
required.
- Final dimensional checking, finishing, painting,
polishing, etc.
- Approval of packing, supporting of shaft inside the
vessel as assembled, etc., clearance for transportation.
- Submission of status report every two weeks.
- Preparation and submission of inspection documents
to client.
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