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Air Fin Cooler Inspection Checklist

The document provides a checklist for inspecting an air fin cooler (air exchanger) with 240 tubes. The inspection found the header boxes and tubes to be in good condition with only minor painting damage and fin damage observed. Thickness measurements for the header assembly and tubes were within nominal ranges. The fan assembly and supporting structures were also found to be satisfactory. The air exchanger passed the hydrotest and no retubing was required for the next outage.

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senthilkumar subramanian
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240 views4 pages

Air Fin Cooler Inspection Checklist

The document provides a checklist for inspecting an air fin cooler (air exchanger) with 240 tubes. The inspection found the header boxes and tubes to be in good condition with only minor painting damage and fin damage observed. Thickness measurements for the header assembly and tubes were within nominal ranges. The fan assembly and supporting structures were also found to be satisfactory. The air exchanger passed the hydrotest and no retubing was required for the next outage.

Uploaded by

senthilkumar subramanian
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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CHECK LIST FOR AIR FIN COOLER (AIR EXCHANGER)

UNIT: 120 AFC NO: 120 –E – 12B SERVICE: SEPARATOR CONDENSER

TUBE BUNDLE NO: ___________________IN USE FROM: __________________________

TUBE MATERIAL: SA 213 T11 TUBE NOS/SIZE: 240/25mmOD X 2.5mmTHIK.

LAST INSPECTED ON: ________________________

REASON FOR OUTAGE: X SHUTDOWN  PRE – SHUTDOWN  REPORTED LEAKING  OTHERS

JOBS AS PER PREVIOUS ACTION REPORT/WORK LIST/NOTE [Give reference/Date]:_________

STRESS RELEIVED: YES NO

ENVIRONMENT:  H2S CAUSTIC ACIDIC HYDROGEN OTHERS


EQUIPMENT IDLING: YES NO

NDT REQUIRED:  D.P. TEST 1W.F.M.P.I X U.T. SCANNING X ET / RFET

HYDROTEST:
TUBE TEST
PRESSURE (Kg/cm2g) 69KG/CM2
TEST DATE 31/12/13

NO OF TUBES PLUGGED PREVIOUS PRESENT TOTAL % OF TUBES PLUGGED


(GIVE PASS WISE):

PARTIAL RETUBING DETAILS IF ANY:


PREVIOUS PRESENT Attach tube sheet layout showing
NO OF TUBES (GIVE PASS WISE) partially renewed tubes (date wise).
DATE

RETUBING OF THE BUNDLE REQUIRED IN THE NEXT OUTAGE: PARTIAL COMPLETE NII
ACTION REPORT ISSUED: NO. __________________.DATED: __________________

NEXT INSPECTION ON : __________________

OBSERVATIONS
1. HEADER BOX (FRONT) :

INTERNAL (After removal of plug, No of plugs removed 75 out of 240) :

 Checked for Corrosion / Erosion / Pitting (If localized, specify location)

FOUND SATISFACTORY
 Condition of plug threads (internal)

FOUND SATISFACTORY

 Condition of tube & Tube sheet (viewed from opened plugs)

FOUND IN GOOD CONDITION


EXTERNAL :

 Checked for corrosion and paint / coating condition:

MINOR PAINTING DAMAGE WAS NOTICED

 Condition of plugs (Not Removed) _________

 Condition of Inlet & Outlet and any other nozzles (including serrations):

FOUND SATISFACTORY

2. HEADER BOX (REAR) :

INTERNAL (After removal of plug, No of plugs removed ____ out of _____) :

 Checked for Corrosion / Erosion / Pitting (If localized, specify location)

MINOR DEPOSIT WAS NOTICED

 Condition of plug threads (internal)

FOUND SATISFACTORY
EXTERNAL :

 Checked for corrosion and paint / coating condition:

MINOR PAINTING DAMAGE WAS NOTICED

 Condition of tube (viewed from opened plugs)

FOUND SATISFACTORY

 Condition of plugs (Not Removed) ____________

 Condition of Inlet & Outlet and any other nozzles (including serrations):

FOUND IN GOOD CONDITION


3. THICKNESS MEASUREMENT OF HEADER ASSEMBLY:

HEADER ASSEMBLY THICKNESS


NOMINAL MESURED MIN MESURED MAX
FRONT 25(T&B), 28(S) 25.3 (T&B), 30.6(S) 25.7(T&B),30.9(S)
REAR 25(T&B),28(S) 25.2(T&B), 30.7(S) 25.8(T&B),30.9(S)

* T&B—Top & bottom, * S—Sides

4. TUBE SECTION :

 Check for Fins condition

MINOR DAMAGE WAS NOTICED

 Check for Tubes condition

FOUND IN GOOD CONDITION

5. THICKNESS MEASUREMENT OF TUBES ASSEMBLY:

Tubes Assembly THICKNESS


NOMINAL MESURED MIN MESURED MAX
FRONT
REAR

6. Condition of Fan Assembly :

FOUND SATISFACTORY

7. Condition of Structures / Foundation Bolt / Supports / Earthing Lug :

FOUND IN GOOD CONDITION

From GOPEC From BPCL


Name & Sign: Name & Sign:

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