The project was executed at the industrial facilities of Hellenic Petroleum in Aspropyrgos Attica and included the following works:
a. Furnaces maintenance works L-3301/3302/3302N/3303. Opening of furnaces, erection of internal scaffolds, replacement of tubes, quality controls, furnaces' closing.
In total, 111 tubes were replaced including 222 welding tasks.
Tubes data: new tube material STM A213 Gr. T9, old tubes ASTM A335 Gr. P22 , thickness 7.11 mm, diameter 3 1/2" (101.6 mm).
b. Equipment maintenance for unit U-3300
§ Erection of scaffolds, blinding, equipment opening, repairs, hydraulic tests, closing and restoration.
§ Replacement of valves and safety valves 1" ÷ 24".
§ Opening of Reformer Reactors for catalyst replacement, cleaning and closure.
Pipe, valves and safety valves materials were supplied by the Owner.
PROJECT CERTIFICATION
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