Brief description
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The project was executed in the Motor Oil (Hellas) Refinery in Corinthos, during the GSD 2016 and included the following works:
a. Maintenance works of the equipment in the units U-1100/ 1200/ 1300/ 4200/ 4950/ 7300/ 7700/ 2100/ 2200/ 2500/ 2600/ Η-4701-Ν
§ Installation of scaffolding all around equipment internally and externally in the positions of operations.
- Installation of blinds of the isolation of the units and restoration after the end of the maintenance.
- Opening of equipment externally and internally for inspection: towers, reactors, regenerator, filters, furnaces, vessels.
- Works in Furnace F-1101.
- Replacement of steam air preheater and air preheater Ε-1152 (Weight 80.000 kg).
- Replacement of roof panels in Radiant section
- Restoration – maintenance of refractories.
- Replacement of tube supports.
- Repair of Thermal Reactor Package F-7701/E-7701.
- Removal of refractories, internal cleaning with sandblasting.
- Partial Replacement of the Shell of F-7701, X-rays and PWHT in 100% of the weldings
- Tube replacement in Ε-7701. Total tubes 247 pieces of diameter 1 1/2"
- Restoration of refractories F-7701.
- Closing and restoration of Thermal reactor Package.
- Inspection of Vessels/ Tanks/ Seals.
- Exchangers – Air coolers
Opening, bundle extraction or replacement, repairs, pressure tests, restoration.
- Replacement of 2 flare tips of Fuels and Lubricants Units.
- Tank Τ-7701 replacement (Diameter 3,7m, Length 19,5m, Weight 54 tons).
- Tower C-4201 Replacement (Diameter 0,85m, Height 20m, Weight 11 tons).
- Maintenance totally in 5 towers, 3 reactors, 4 furnaces, 55 exchangers, 10 air cooler, 20 vessels, 6 tanks, 2 seals, 2 flare tips.
b. Piping Works
- Maintenance works and new projects Piping works for products and utilities.
Prefabrication and erection of piping during shut down, partial line replacements, installing new lines
Lines Diameter: 1/2" ÷ 36", width to 11mm, materials C.S., Stainless steel.
Total dia inches: 2300.
Quality Control: X-Rays 20%
Pressure test of piping: 20 bar ÷ 120 bar.
c. All type Valves replacement from 1" ÷ 24". Total pieces 156.
The 91% of the work was done during the S/D.
All the materials and equipment was provided by the owner except the materials for the new piping supports.
The works executed for 2 months before and 21 days during S/D.
The above project was executed in parallel with the projects ‘’ Unit revamping FCC/ 3100/ 3700 & equipment of GENERAL SHUT DOWN ‘’ and ‘’ Revamping works in fuels, petrol, FCC units’’ on the same Shut Down period 2016.
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