The project was executed in Industrial Facilities of Hellenic Petroleum in Aspropyrgos Attica during the Turn Around 2015 and included the following works:
1. L-3901
• Installation of the blind, opening furnish, erection of external and internal scaffolding for inspection.
• Replacement of tubes in convection section 3 ½ diameter '' (101,6 mm), 14.420 mm length
Materials ASTM A 335 Gr. P5 and 8.05 mm thick.
Total replacements of 16 tubes.
• Replacement of two curves 180o 3 ½ '' P9 material in Radiant section and two curves 90o 3 ½ '' material P11 in the steam collector of convection.
• Quality of welds 100% RT, 100% PT in socket welds, 100% P.W.H.T.
• Hydraulic test furnace at 164,7 kg / cm2 and restorations.
Total welds: 3 ½ '' P11 4 pcs. , 3 ½ '' P5 61 pcs. , 3 ½ '' P9 4 pcs. , 1 ½ '' P5 8 pcs. , 1 '' P5 4 pcs.
2. L-3101
• Installation of the blind, opening furnace, erection of external and internal scaffolding for inspection.
• Replacement of tubes diameter 4”/ 6”/ 8”/ 10” on Radiant section 16,670mm length
Materials ASTM A 335 P9 SCH XS
Replacement of 8 tubes 10 '', 8 tubes 8 '', 4 tubes 6 '', 2 tubes 4 ''.
• Various works such as:
- Replacement of the bottom plates across the burners area
- Replacement of tube supports in the radiant section 10'', 8'', 6'', 4''
- Replacement of expansions (2 pieces) of air ducts.
• Quality of welds 100% RT, 100% PT in socket welds, 100% P.W.H.T.
• Hydraulic tests per box at a pressure 30 kg/cm2
• Restoration, furnace closing and commissioning.
Total welds: 10'' 24 pcs, 8'' 32 pcs, 6'' 39 pcs, 4'' 14 pcs, 11/2'' 8 pcs, Reinforcing Pads 10'' 8 pcs.
All project materials and equipment provided by the owner.
The above project was carried out in parallel with the work requirements engineering construction projects: AF-142205 '' Energy savings in U-3100 units, U-3400, U-4600 '' and AF-142209 '' Energy savings in U-3200 units, U-4100, U-4600 '' in the Aspropyrgos Refineries in the same period of the Turn Around 2015.
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