1. MANUTENZIONE E BONIFICA IMPIANTI CON SISTEMI IDRODINAMICI E CHIMICI H YDROJETTING & C HEMICAL S YSTEM FOR M AINTENANCE & R EMEDIATION I NDUSTRIAL P LANTS Heavy Hydrocarbon Dilution + Displacement Degassing + Cleaning Procedure by EC 9010 and EC 9008 Procedure designed by Migen SpA in collaboration with Nalco Italiana S. r. l. MIGEN SpA Via della Meccanica n. 18/20 – 30176 Marghera VE I Phone ( + 39 ) 041 54 77 444 Fax ( + 39 ) 041 54 77 455 e-mail: migen@migen.it - www.migen.it - PEC: migen@legalmail.itwww.migen.itmigen@legalmail.it Reg. Imp./C. F./P.I. 00355880279 REA VE 143510 C.S. € 260.000 I.V.

2. MANUTENZIONE E BONIFICA IMPIANTI CON SISTEMI IDRODINAMICI E CHIMICI H YDROJETTING & C HEMICAL S YSTEM FOR M AINTENANCE & R EMEDIATION I NDUSTRIAL P LANTS Dilution and Displacement Heavy Hydrocarbons using Gasoil with Nalco EC 9010 additive Procedure designed by Migen SpA in collaboration with Nalco Italiana S. r. l. MIGEN SpA Via della Meccanica n. 18/20 – 30176 Marghera VE I Phone ( + 39 ) 041 54 77 444 Fax ( + 39 ) 041 54 77 455 e-mail: migen@migen.it - www.migen.it - PEC: migen@legalmail.itwww.migen.itmigen@legalmail.it Reg. Imp./C. F./P.I. 00355880279 REA VE 143510 C.S. € 260.000 I.V.

3. FLOW DIAGRAM SHOWING – START GASOIL CIRCULATION Temporary Circuit Installation Gasoil loading for Dilution and Displacement Heavy Hydrocarbons

4. FLOW DIAGRAM SHOWING – COMPLETE GASOIL CIRCULATION Circuits complete filling with gasoil to replace heavy hydrocarbons residues removed

5. FLOW DIAGRAM SHOWING – EC 9010 DOSAGE IN GASOIL CIRCULATION EC 9010 Dosage to promote the fouling disintegration and dilution into gasoil

6. FLOW DIAGRAM SHOWING - GASOIL CIRCULATION WITH EC 9010 Gasoil + EC 9010 circulation for 8-10 hours to remove fouling and heavy hydrocarbons by dilution into gasoil

7. FLOW DIAGRAM SHOWING - GASOIL DISPLACEMENT BY STEAM Steam flushing through all the circuits containing gasoil

8. FLOW DIAGRAM SHOWING - CIRCUIT GASOIL FREE Draining and flushing by steam of all the circuits to displace the condensate containing gasoil

9. MANUTENZIONE E BONIFICA IMPIANTI CON SISTEMI IDRODINAMICI E CHIMICI H YDROJETTING & C HEMICAL S YSTEM FOR M AINTENANCE & R EMEDIATION I NDUSTRIAL P LANTS Degassing & Cleaning by steam with Nalco EC 9008 additive Procedure designed by Migen SpA in collaboration with Nalco Italiana S. r. l. MIGEN SpA Via della Meccanica n. 18/20 – 30176 Marghera VE I Phone ( + 39 ) 041 54 77 444 Fax ( + 39 ) 041 54 77 455 e-mail: migen@migen.it - www.migen.it - PEC: migen@legalmail.itwww.migen.itmigen@legalmail.it Reg. Imp./C. F./P.I. 00355880279 REA VE 143510 C.S. € 260.000 I.V.

10. FLOW DIAGRAM SHOWING – STEAM OUT CIRCUIT Temporary Circuit Installation - Flushing by steam to move all the hydrocarbons from the circuits, to slop tank - Time to complete operation: 4-5 hours

11. FLOW DIAGRAM SHOWING - STEAM OUT WITH EC 9008 DOSAGE STARTING EC 9008 dosage to promote the hydrocarbon and dangerous substances emulsification into the condensate

12. FLOW DIAGRAM SHOWING - STEAM OUT & CONDENSATE CIRCULATION EC 9008 dosage to promote the hydrocarbon and dangerous substances emulsification into the condensate and Reflux of Condensate rich of EC 9008 Time to complete operation: 10-16 hours

13. FLOW DIAGRAM SHOWING – RINSE WITH CLEAN WATER Main column rinse to cool the item and avoid emulsion stagnation above the trays - Time to complete the operation: 6-8 hours

14. FLOW DIAGRAM SHOWING – FINAL SITUATION Final condensate draining, under Nitrogen pressure, with flare connection close. Temporary circuit Removing

15. FLOW DIAGRAM SHOWING – FINAL SITUATION + BROKEN EMULSION Final Situation - Waiting to obtain the BROKEN EMULSION Discharge to Oily Sewer the Water and to Slop the Hydrocarbon

16. Activities Description SANNAZZARO Refinery (ITALY) Degassing & Cleaning: Blow Down Pipe to Torch LIVORNO Refinery (ITALY) Degassing & Cleaning: Topping, Vacuum, Merox, Furfural Plant, MEA Plant, Gasoline Separation, Sulfur Plant. Lubricants plants Blow Down Pipe to Torch. Gasoline plants Blow Down Pipe to Torch. ANCONA Refinery Degassing & Cleaning: Blow Down Pipe to Torch, SELEXOL Plant, Vacuum Column. Degassing & Cleaning: SELEXOL Plant MANTOVA Refinery Heavy Hydrocarbon Displacement + Degassing & Cleaning: Topping, Vacuum, Visbreaking, SWS, Sulfur Plants. MOHAMMEDIA Refinery Heavy Hydrocarbon Displacement + Degassing & Cleaning: Vacuum Plants Year TA 2006 TA 2011 TA 2010 TA 2012 TA 2011 TA 2012 REFERENCES Procedure designed by Migen SpA in collaboration with Nalco Italiana S. r. l.