Managing mill supply in the sugar industry : a co-ordination issue between numerous stakeholders
A decision support system based on the modelling of cane flows and a simulation tool: MAGI
Assessing the potential impact of quality-based delivery allocations on sugar production at the mill area level
The result feed back the discussion between growers and millers about the scenario feasability and new issues to be adressed
SASEX Contacts :
C. Lejars, CIRAD CA PY Legal CIRAD TERA, P. Lyne SASEX LG Soler, INRA ESR S.Auzoux, CIRAD CA
How to share the potential sugar value between growers and millers?
♦ Selection of a relevant cane payment system ♦ Assessment of cane quality along the supply chain ♦ Control of production costs from fields to the mill
How to organize mill supply?
♦ Choice of mill opening and closure dates ♦ Rules of delivery allocation amongst growers
Definition of homogeneous
quality sub-areas Design of new delivery allocation patterns
♦ Agricultural impacts : cane yields, infestation of stem borer
♦ Harvest organization at farm level : outsourcing, impact on labour force ♦ Transport organization : logistic, optimisation of fleet size
♦ Evolution of cane payment systems
Simulation and comparison of total sugar production
IMPROVED PROFITABILITY BY
RE-ORGANISING SUGARCANE SUPPLY:
A DECISION SUPPORT APPROACH
1 1 % 1 2 % 1 3 % 1 4 % 1 5 % %1 1 % 1 2 % 1 3 % 1 4 % 1 5 % % 0 5000 10000 15000 20000 25000 30000 35000 40000 45000 weeks 0 (diversion) 1 (coastal) 2 (hinterland) 3 (inland) 4 (SSG) PU Characteristics:
Cane area; Cane yield; Harvest capacities
TC Characteristics:
Transfer capacities Step (1)
Step (2)
Amount of sugar produced weekly and annually
Planning and operation rules
Delivery allocation Latest closing date Hazard management rules Agro-industrial structure
Name and location of Production Units (PU) Name of Transloading Centres (TC) Links between PU and TC (structure of cane flows)
Mill Characteristics:
Hourly crushing capacity; Working days per week; Maintenance duration Breakdown rate
Length of Milling Season Opening and closing dates Delivery scheduling
Weekly quality curve / PU Weekly delivery / PU
Weekly mill process efficiency Cane fields
Loading zone Loading zone
Mill Mill yard Cutting Loading Haulage Haulage Weighing Unloading Storage Sampling Crushing Millers Growers Contractors Cane fields Cane
fields fieldsCane Cane fields Hauliers 8374 7569 10986 5530 9489 7497 8774 4709 9887 3005 0 2000 4000 6000 8000 10000 12000 A B C D E scenarios
extra RV tonnes produced as compared t
o
the reference scenario
2000 2001
1 to 5% gain compared with the benchmark scenario
A simulation tool The
conceptual framework
