We have experienced in the past 3 months a serious increase in consumables. The average cost of consumable per hour recovered for the first 9 months of 2015 equals 97 THB/hr. However, the average of the last 3 months of the year 2015, equal 136 THB/hr or an increase against the first 9 months of approx. 40%. Compared to December 2015 the increase is even higher and amounts to almost 55%.
Because of this, we need to analyze more in detail what has actually created these cost increases. But I have found that the groups of consumbles, and the suppliers, we have defined, do not represent anymore the total cost of consumables. Or maybe there is costing wrongly allocated to consumables, instead of the BOM data ??
On the first worksheet “Total”, I have added 2 totals per month :
- The total per group analyzed (coming from worksheet “consumable group”). This analysis covers on average of only 52% of the total cost of consumables.
- The total per supplier analyzed (coming from worksheet “1-10 supplier”). This analysis covers on average of approx. 77% of the total cost of consumables.
It is a golden rule for analysis to try to apply a factor 20/80. In 20% of suppliers or of defined groups, we should find back more than 80% of total cost. This is clearly not the case anymore, especially for the defined groups. Valuable information is missing and we urgently need to review the consumable groups and its suppliers.
I would like to suggest to make this a project and assign K. Kai as project leader for this exercise. She will need to review the full year of 2015 with concerned parties, and try to find out the missing information.
I would like to target to have all information updated on 2015 by the next closing of January 2016, so that we can start comparing and find out which groups have increased the cost of consumables, or which costs were wrongly allocated.