THERMOGRAPHY REPORT. Sr.No. Location Equipment Date Amb.temp Min.Temp Max.Temp GSFD1V1 MCHP SKEW GEAR O C 67.4 C 64 C

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1 GSFD1V1 MCHP SKEW GEAR O C 67.4 C 64 C BOX BEARING Basic Observations: Uniform temperature distribution found on the entire gearbox. Analysis: However, the temperature is more than expected for this slow speed gearbox. Change the lubricant to improve life of gears and bearings and bring down the temperature.

2 Sr.No. Location Equipment Date Amb.temp Max.Temp GSFD1V1 EC-4 BOILER O C 129 C 4.5Mtr. LEVEL Basic Observations: Thermogram taken on the insulation of the boiler. Shows long patches of high temperature zones at different places. Analysis: Loss of radiant heat is approximately 2 to 3 times the normal loss. This would lead to underperformance of the boiler and consumption of more fuel. The temperature of the steam would be less than expected. Thermogram/Analysis by:asd/dd

3 GSFD1V1 EC-4 ID FAN-1 OF B O C 50 C 59 C NON DRIVE END Basic Observations: There is a narrow band all along the plummer block that shows slightly higher temperature than the rest of the area. But along this band the temperature is also not uniform. This thermogram has been taken from the end view. Analysis: Such a non-uniform temperature band is clearly possible when the rollers rub against the cage. It also means that the bearing is sitting slightly skewed inside the housing. Change the plummer block housing to correct the imperfection that would lead to premature bearing damage. Thermogram/Analysis by:asd/dd

4 GSFD1V1 EC-4 CW PUMP O C C 80 C MOTOR BRG. Basic Observations: The bearing temperature is high and unacceptable. Analysis: The load on the bearing is lower than expected. Therefore the C 3 clearance that has been provided is actually a constraint for proper EHD (Elasto Hydrodynamic Lubrication) to take place in presence of light loads. This causes high temperature. This is the imperfection. Hence change the bearing to one having normal clearance for effective lubrication, lower temperature and enhance life.

5 GSFD1V1 EC-4 PCC-3,AP O C C 75 C Basic Observations: One hot spot found in the area marked by the square having a temperature of 75 C. Analysis: Though the temperature is slightly higher than normal it indicates a potential problem that might lead to a failure of the connection due to overheating. This connection, specially the R and Y phase may be checked for possible looseness and may be tightened. Thermogram/Analysis by:asd/dd

6 GSFD1V1 EC-1 CWP O C C 118 C Basic Observations: A hot zone was found towards the bottom of the motor slightly off center and towards the drive end. Analysis: This shows an area of weak insulation. Due to this imperfection the motor is heating up. So, replace this motor and re-varnish to improve the insulation and stiffness.

7 GSFD1V1 EC-1 HOT WELL O C C 87 C PUMP MOTOR Basic Observations: One hot patch was seen in the thermogram (approx around the centerline). There is another hot patch on the bearing area. Analysis: The insulation has weakened. The motor may be taken out of service and re-varnished to make the insulation stronger and stiffer. The bearing is distressed. This is due to hot misalignment. The pump and motor may be hot aligned and the delivery pipeline may be supported as discussed at site. Feedback Thermogram/Analysis by:asd/dd

8 GSFD1V1 EC-1 P O C C 72 C Basic Observations: In general the temperature of the connections is hotter than normal though it is still not at the warning level. Analysis: The connections may be monitored every two to three months to check for temperature rise so that corrective actions may be taken before a failure takes place. Thermogram/Analysis by:asd/dd

9 GSFD1V1 EC-1 BOILER# O C C C Basic Observations: Some hot patches and zones found on the skin. Analysis: These patches show weak spots on the boiler, which are developing. These may be monitored from time to time to see further deterioration. Thermogram/Analysis by:asd/dd

10 GSFD1V1 EC-1 BOILER# O C C C Basic Observations: Large areas of hot patches and zones observed with temperatures running up to 142 degree C. Analysis: The boiler insulation is weak and this would lead to underperformance of the boiler. Presently the radiant heat loss is around 2.5 times the normal. When this loss reaches 4 times the normal the performance of the boiler would be difficult to control and stabilize. Hence monitor or take intermediate action, if possible.

11 GSFD1V1 EC-1 BOILER# O C C C 16Mtr. LEVEL REAR WALL LEFT WALL FRONT WALL RIGHT WALL Basic Observations: The insulation of this portion of the boiler is O.K. Analysis: Continue to monitor till the temperature crosses around 130 degree C.

12 GSFD1V1 EC-1 BOILER# O C C C 16Mtr. LEVEL REAR WALL LEFT WALL FRONT WALL RIGHT WALL Basic Observations: Some hot patches are developing for this portion of the boiler. Analysis: There is an incipient fault developing as seen in the first thermogram on the left. This may be monitored every month and action may be taken when the temperature reaches or crosses 140 degree C.

13 GSFD1V1 EC-1 P O C C C Basic Observations: Temperature profile found uniform no hot spots observed. Analysis: No problem seen. O.K. Continue to monitor every quarter to six monthly.

14 GSFD1V1 AC-8 ELECTRICITY O C C C CABLE Basic Observations: Uniform heating observed in both the joints. Analysis: No abnormality observed in the joints. These may be monitored once in six months to ascertain health and possible failure points.

15 GSFD1V1 AC-3 ELECTRIC O C C C CABLE Basic Observations: Uniform temperature observed on the joint seen on the left. Whereas some local hotspots were seen on the right joint. Analysis: The joint on the right has some incipient faults that may develop into a failure. This joint may be monitored every two to three months