INFLUENCE
OF ADDITIONAL MAN POWER TO COST SAVING
WHEN
5% LOOM EFFICIENCY IS IMPROVING
Oleh:
H. Khaeruddin Khasbullah.
Consider:
Actual
Cost = USD 523.000;
Weft
density/ inch = 40 ends
Rpm
= 600
Machine
(looms) = 269 unit
Actual
efficiency = 75% (Efficiency I)
Target
efficiency with additional 20 man power = 80% (Efficiency II).
Operator
salary = Rp 3.000.000/ month = USD 250./ month. (E.R =
Rp.12.000/USD).
Additional
man power according the down time happened = 20 persons.
Additional
salary = USD 250 x 20 (6-7 persons/ shift) persons = USD 5.000;
Assumed
fix cost increase according to efficiency improvement
(energy
and spare part cost increasing) = 2% = USD
523.000 x 2% = USD 10'460
Actual
cost II = Actual cost + additional salary = USD 523.000 + USD 5.000 +
USD 10'460 = USD 538.460;/ month.
Problem: We at present get low loom efficiency (75%) caused by so many down time due to bad weft yarn we have used with reasonable price. Is it logic if we take some more man power if we may possible to improve the loom efficiency by 5% ( 75% ==> 80%)
Problem: We at present get low loom efficiency (75%) caused by so many down time due to bad weft yarn we have used with reasonable price. Is it logic if we take some more man power if we may possible to improve the loom efficiency by 5% ( 75% ==> 80%)
Calculation:
I.
Efficiency (1) = 269 x 600 x 40 x 0,914 x 30 x 0,75
40
= 3'319'191 meter/
month.
Efficiency
(2) = 269 x 600 x 40 x 0,914 x 30 x 0,80 (5% up)
40
= 3'540'470 meter/
month.
II.
Cost/ meter (1) = 523.000; USD
3'319'191 m
= 0,1575 USD/m
Cost/
meter (2) = 538.460; USD
3'540'470
m
=
0,1520 USD/m
- Diff. Cost/ meter = USD 0,1575 – USD 0,1520 USD= USD 0,0055/ meter.
Total Diff/ gain/
month = USD 0,0055x USD 3'540'470;
=
USD 19'472.58
=
Rp 233'671.020/month = Rp.2'804'052'240/ years
==>
We still have big gain with additional man power if the efficiency can reach to 80% from 75%
