Expansion Joints for Fluid Catalytic Cracking Units (FCCU)

Refractory Lined & Unlined Expansion Joints for Fluid Catalytic Cracking

Quality control & testing

The Fluid Catalytic Cracking is an active and complex process, operating at high temperatures and in severe conditions.

The FCC unit processes a significant portion of the refinery's heavy oil to crack low value hydrocarbons into a range of higher value hydrocarbons and a slowdown or shutdown can directly affect the refinery's profitability. When using FCC MACOGA Expansion Joints, a strict control and testing programme is maintained and FCCU operation is guaranteed.

Thus, an adequate and well integrated nondestructive testing plan is necessary to assure the quality level required in FCCU Expansion Joints. The principal nondestructive methods used in the fabrication of FCC Expansion Joints are: visual, X-ray and gamma radiography, ultrasonic, magnetic particle, and liquid penetrant and the nondestructive testing programme includes the inspection of alloys and plate materials, forgings, casting, cladding, and welds and definitely a structural pressure test and a leak detection test

That's why all MACOGA FCC Expansion Joints undergo a comprehensive and rigorous quality control and testing programme including:

  • Review Drawings
  • Advanced Review of Calculations
  • Check Material and welding consumables certificates
  • Review and update WPS, PQR and WQR
  • Review NDE Procedures & Operator Qualification
  • RT- Radiographic Examination
  • PT - Liquid Penetrant Examination
  • MT - Magnetic Particle Examination
  • Hardness Testing of Welds
  • Pressure & Leak Detection Test
  • PMI - Positive Material Identification
  • Inspection of Refractory Lining
  • Surface Preparation & Paint System
  • Check Packing & Marking
  • Etc.

In addition, our experience is reinforced through continuous training and qualification programmes, which ensures that we are constantly attentive to the latest technological advances, regulatory requirements and test methodologies.

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