Maintenance of Fin-Fan Air Cooler

Maintenance of Fin-Fan Air Cooler in Refinery

In this topic today, we will clear how the fin fan air cooler maintenance are done so that we will disburse in step by step detail.

Arrangement Before start work

1. To sabse Pahle aapke pass Work permit honi chahiye

2. Apke pass proper tools hone chahiye

3. Apko proper PPE jarur istemal karna chahiye aapke safety ke liye.

4. Aur aaj ham baat kar rhe h fin-fan ke maintenance ki to ye kaam hame height per rah kar karna hota hai to Safety harness ka upyog jarur kare.

5. Jarurat ke hisab se scaffolding erection jarur kra le

6. Equipment me koi fluid ho ya pressure ho to use bhi drain or release kar le.

7. Aur sabse khas  baat ki Blind list ke aadhar per inlet or outlet ka blinding kar le yaani ki equipment ka positive isolation kaam shuru karne se pahle jarur kar le.

watch video of Fin-Fan Maintenance

Let’s Start Steps by Step Maintenance

1. Remove the plugs using torque wrench. ( Do not use hammer ring spanners and other hammering methods to remove the plugs because that will damage the threads )

2. Remove the old gasket rings without damaging the gasket area.

3. Now offer to inspection team for preliminary inspection.

4. Fix hydro jet water collection trays.

5. Now hydro jet the tubes.

6. After hydro jetting air clean the tubes.

7. Offer for Inspection

8. If ok, clean the gasket area good without damage.

9. Check the thread for any damage.

10. Clean the plugs good and check the threads.

11. Fix the plug with new gasket.

12. Tight plugs by torque wrench to required value.

13. Now fill the water and Hydro Test.

14. Identify leaks through Tubes/Plugs.

15. If no leak offer for inspection to the team.

16. Now drain the water and de-Blind.

17. Finally make good housekeeping and work safely.

Question Answer

Questios No1- What are the types of gaskets used in the fin-fan cooler plugs and material of construction?

Ans- Ring type gaskets are used and material of construction is soft iron, aluminium, stainless steel  and alloy.

Questio No2- What are the size of plugs used in fin-fan cooler?

Ans- 1 1/8 (28.5 mm) is the normal size. But 1 ¼(31.75=32 mm) and 1 3/8 (34.9=36 mm) plugs are also used.