Refinery - II M&I SD Oct-Nov 2018
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Chennai Petroleum Corporation Limited (A group company of Indian Oil)<br />
Technical - Inspection<br />
Chennai Petroleum Corporation Limited (A group company of Indian Oil)<br />
Technical - Inspection<br />
2.4.1.46. 15-E-47 A TEMPERED WATER FIN FAN COOLER<br />
No. of tubes Tube dimension Metallurgy Last Retubed Remarks<br />
240 25 mm OD X 3 mm Thk. X 10500 mm A179 Aug-2004 ----<br />
Minor pitting and corrosion was observed on the channel pass partition plate, channel inside & cover.<br />
The tube mouth condition was found satisfactory.<br />
Channel pass partition plate was repaired by weld buildup. Ceramic coating was applied on both tubesheets. Coal<br />
tar epoxy painting was applied to Channel and floating header covers.<br />
Shell Test (KSC) Tube Test (KSC) B. Shell Test (KSC) Old Plugs (nos.) New Plugs (nos.)<br />
Recommendations<br />
--- 18.15 --- 7 0<br />
Anticipate retubing in next M&I shutdown. Anticipate weld repair on Channel<br />
cover and pass partition plate.<br />
2.4.1.47. 15-E-47 B TEMPERED WATER FIN FAN COOLER<br />
No. of tubes Tube dimension Metallurgy Last Retubed Remarks<br />
240 25 mm OD X 3 mm Thk. X 10500 mm A179 Aug-2004 ----<br />
Minor pitting and corrosion observed throughout the channel head partition plate , channel inside & cover.<br />
Severe corrosion was observed on channel partion plate gasket seating surface .<br />
On Channel head to tube sheet weld seam, grooves were observed at random locations.<br />
Tube mouth condition was found satisfactory.<br />
Channel pass partition plate was repaired by weld buildup. Ceramic coating was applied on both tubesheets. Coal<br />
tar epoxy painting was applied to Channel and floating header covers.<br />
Shell Test (KSC) Tube Test (KSC) B. Shell Test (KSC) Old Plugs (nos.) New Plugs (nos.)<br />
Recommendations<br />
--- 18.15 --- 0 0<br />
Anticipate retubing in next M&I shutdown. Anticipate weld repair on Channel cover<br />
and pass partition plate.<br />
15-E-47A: View of tube ends<br />
15-E-47C: Deep pitting on partition plate<br />
2.4.1.48. 15-E-47 C TEMPERED WATER FIN FAN COOLER<br />
No. of tubes Tube dimension Metallurgy Last Retubed Remarks<br />
240 25 mm OD X 3 mm Thk. X 10500 mm A179 <strong>Nov</strong>-2007 ----<br />
Tube mouth condition was found satisfactory.<br />
Heavy Scalings and pittings were observed on partition plate.<br />
Ceramic coating was found damaged.<br />
Ceramic coating was applied on both tubesheets. Coal tar epoxy painting was applied to Channel and floating<br />
header covers. Partition plate was repaired by weld buildup.<br />
Shell Test (KSC) Tube Test (KSC) B. Shell Test (KSC) Old Plugs (nos.) New Plugs (nos.)<br />
Recommendations<br />
--- 18.15 --- 0 0<br />
Anticipate weld repair on Channel cover and pass partition plate.<br />
2.4.1.49. 15-E-47 D TEMPERED WATER FIN FAN COOLER<br />
No. of tubes Tube dimension Metallurgy Last Retubed Remarks<br />
240 25 mm OD X 3 mm Thk. X 10500 mm A179 <strong>Nov</strong>-2007 ----<br />
Tube mouth condition was found satisfactory.<br />
Heavy Scalings and pittings were observed on partition plate.<br />
Ceramic coating was found damaged.<br />
Ceramic coating was applied on both tubesheets. Coal tar epoxy painting was applied to Channel and floating<br />
header covers. Partition plate was repaired by weld buildup.<br />
Shell Test (KSC) Tube Test (KSC) B. Shell Test (KSC) Old Plugs (nos.) New Plugs (nos.)<br />
Recommendations<br />
--- 18.15 --- 0 0<br />
Anticipate weld repair on Channel cover and pass partition plate.<br />
2.4.1.50. 15-E-47 E TEMPERED WATER FIN FAN COOLER<br />
No. of tubes Tube dimension Metallurgy Last Retubed Remarks<br />
240 25 mm OD X 3 mm Thk. X 10500 mm A179 <strong>Nov</strong>-2007 Retubed<br />
Tube fins were found in damaged condition.<br />
Deep pitting was observed on partition plate.<br />
Deep scaling was observed on tube internals.<br />
During water filling for testing, 2-3 tubes started leaking & during testing many tubes were found leaking.<br />
Completely Retubed. Coal tar epoxy painting was applied to Channel and floating header covers. Channel pass<br />
partition plate was repaired by weld buildup.<br />
Shell Test (KSC) Tube Test (KSC) B. Shell Test (KSC) Old Plugs (nos.) New Plugs (nos.)<br />
Recommendations<br />
--- 18.15 --- 0 0<br />
Anticipate Weld repairs on Channel cover and pass partition plate.<br />
CRUDE DISTILLATION UNIT<br />
(CDU/ VDU-<strong>II</strong> PLANT-15, 17, 18)<br />
194<br />
<strong>Refinery</strong> - <strong>II</strong> M&I S/D <strong>Oct</strong>-<strong>Nov</strong> <strong>2018</strong> - Inspection Report<br />
<strong>Refinery</strong> - <strong>II</strong> M&I S/D <strong>Oct</strong>-<strong>Nov</strong> <strong>2018</strong> - Inspection Report<br />
195
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