Friday, 8 May 2020

Fin Fan Cooler Maintenance | Fin Fan Heat Exchanger | Fin Fan Cooler | Fin-Fan | General Fitter work

How to do Maintenance of Fin-Fan Cooler




Some of Maintenance Procedure Arrangements Before start work


1. You must have an authorized work permit. 


Fin-Fan maintenance
Work Permit

2. You must have proper tools for working.


maintenance of fin fan
Tools used in refinery

3. You should always use proper PPE ( Personal Protective Equipment ) for your safety.


maintenance of fin fan
PPE ( Personal Protective Equipment )

4. Today we are talking about maintenance of Fin-Fan and this work always executed on height so you  must have to use Safety Harness as a falling protection.

maintenance of fin fan
Safety Harness


5. As per requirement always use scaffolding.

maintenance of fin fan
Scaffolding

6. If any fluid or pressure present in equipment then drain the fluid and release the pressure.

7. And the most important thing is to provide blinding as per blind list for the positive isolation of an equipment.

What is Blinding





Let’s Start,


Maintenance of Fin Fan
Fin Fan Air Cooler Maintenance

Steps for Maintenance Procedure

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 thread )

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 once again 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.


Qusetion Answer Related to Fin-Fan


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.


 

 






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