1. Monitoring of statistical data related to OCM
By-
Pradeep Kumar
Chief Manager(Excv)
Ghugus OCM, Wani Area

2. Basically the following data related to OCM are maintained :-
1. HEMM Availability
2. HEMM Utilisation
3. Capacity Utilisation
4. Specific Diesel Consumption
5. Specific POL consumption
6. Burnt Oil Recovery
7. Monitoring of Diesel consumption per hour in different HEMMs

3. HEMM availability HEMM availability = Working Hours + Idle Hours
Shift Hours
CMPDIL norms of availability for various HEMMs are:-
Dragline %
Shovel( Diesel/Electric) - 80%
Dumpers – 67%
Dozers - 70%
Drills %

4. HEMM Utilisation HEMM utilisation = Working Hour Shift Hours
CMPDIL norms of utilisation for various HEMMs are:-
1. Dragline %
2. Shovel (Diesel/ Electric)- 58%
3. Dumpers – 50%
4. Dozers – 45%
5. Drills - 40%

5. Capacity utilisation Capacity utilisation = Coal/1.5 + OBR
Mine capacity/12
Capacity of mine is in following parts-
Loading capacity
Transport capacity
3. Critical capacity- It is capacity which is less in loading or transport
and that is mine capacity
There should not be much mismatch in loading and transport capacity
There is a system factor in the mine according to degree of difficulty of the mine.
The Final loading capacity of mine is calculated by multiplying the loading capacity of mine with the system factor

6. Specific Diesel Consumption
Specific diesel consumption = Diesel consumed in the month
Total CUM handled in the month
The specific diesel consumption is decided by CMPDIL by studying the mine and is different for individual mines.

7. Specific POL Consumption
Specific POL consumption = POL consumed in the month
Total CUM handled in the month
The specific POL consumption should be approximately .041 Ltr/CUM

8. Burnt Oil recovery
Burnt oil recovery is the waste oil which is replaced during preventive maintenance.
The recovery should be atleast 20-25% approx.

9. Monitoring diesel consumption of various HEMM per hour
The diesel consumption per hours of various Machines is generally provided by OEM after studying the performances or is studied by us by forming a committee and studying the consumption pattern.
The monitoring of diesel consumption is needed to check the specific diesel consumption and to check for theft of diesel.
The consumption pattern for various HEMM of GOC are:-
1. Hyd Excavator Tata Ex ltrs/hr
2. 60Te CAT Dumper – ltrs/hr
3. 50 Te BEML Dumper – ltrs/hr
4. BEML D155 Dozers ltrs/ hr
5. BEML D355 Dozers ltrs/ hr

10. THANK YOU