MACOGA has completed the detailed engineering, manufacturing and testing of 2 FCCU Cold Wall Design Expansion Joint for one of the largest refineries in South America.

The FCC Cold Wall Design Expansion Joints (ID: 1240 mm and 3760 mm long / ID: 810 mm and 1876 mm long) incorporates:

Pantographic Linkages
2 ply testable & packed Bellows in ASTM B443 Inconel 625 LCF
Internal and external Super Wool insulation
Hexagonal Mesh in AISI 304H
Sealing anchors and sealing rope
Abrasion Lining Rescobond AA 22 S
Refractory lining Resco RS 17 EC

Medium: Catalyst
538 °C Bellows
343 °C Pipe - 775 °C Medium
Design Pressure: 6,32 kg/cm² (g)
Test Pressure: 9,5 kg/cm² (g)

MACOGA FCCU Expansion Joints undergo a comprehensive quality control and testing program 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
100% RT- Radiographic Examination
100% PT - Liquid Penetrant Examination
MT - Magnetic Particle Examination
Hardness Testing of Welds
Pressure & Leak Detection Test
100% PMI - Positive Material Identification
100% Inspection of Refractory Lining by API Inspector
Surface Preparation & Paint System check

Quality Approvals

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