SUPPLY CHAIN MANAGEMENT
Thomas De Boeck
Docent: K. Buggenhoudt
Jaar: 2025 – 2026
Bedrijfsmanagement: Supply Chain Management
,Inhoudsopgave
Hoofdstuk 1: Voorraadbeheer ......................................................................................................................... 4
1.1 Introduc,e tot voorraden ............................................................................................................................. 4
Waarom voorraadbeheer en wat is het belang? ........................................................................................... 4
Overstock vs understock ................................................................................................................................ 5
Algemene karakteris<eken ............................................................................................................................ 5
Inventory turnover ra<o ................................................................................................................................ 6
Classifica<e volgens posi<e in de supply chain .............................................................................................. 6
Classifica<e volgens type ............................................................................................................................... 7
Classifica<e theore<sche benadering ............................................................................................................ 7
1.2 Voorraadkosten ............................................................................................................................................ 8
Orderkosten ................................................................................................................................................... 8
Voorraadkosten.............................................................................................................................................. 9
1.3 Formule van Camp ...................................................................................................................................... 10
1.4 Re-order point (ROP) ................................................................................................................................... 12
1.5 Safety stock (stochas,sch model) ............................................................................................................... 13
1.6 Out of stock kosten & samengesteld inventory model ................................................................................ 14
1.7 Order methoden (BQ, BS, sS, sQ) ................................................................................................................ 15
BQ-order methode (A&B producten)........................................................................................................... 15
BS-order methode ....................................................................................................................................... 15
sS-order methode (C producten) ................................................................................................................. 16
sQ-order methode ....................................................................................................................................... 16
1.8 Inventory management strategieën ........................................................................................................... 16
Hoofdstuk 2: MPS – MRP – DRP .................................................................................................................... 17
2.1 Produc,e..................................................................................................................................................... 17
Aanvullingsmethoden .................................................................................................................................. 17
2.2 Werkwijze MPS en MRP .............................................................................................................................. 17
NePng ......................................................................................................................................................... 17
Berekening ................................................................................................................................................... 18
Rollend plan ................................................................................................................................................. 18
2.3 Aanvulling via MRP ..................................................................................................................................... 18
2.4 Veiligheidsvoorraad .................................................................................................................................... 19
Veiligheidsvoorraad bij LLC 1,2,3,... ............................................................................................................. 19
2.5 Uitbreiding MRP – MPS – DRP .................................................................................................................... 20
Uitdagingen en beperkingen MPS – MRP .................................................................................................... 20
Bullwhip-effect ............................................................................................................................................. 21
Available to promise (ATP) ........................................................................................................................... 21
Backorder ..................................................................................................................................................... 22
MRP1 – MRP2 .............................................................................................................................................. 22
MRP2 – lange termijn horizon ..................................................................................................................... 23
Distribu<on Requirements Planning (DRP) .................................................................................................. 24
DRP2 – lange termijn investeringsbehoeae................................................................................................. 24
Integra<e MRP en DRP ................................................................................................................................ 25
Hoofdstuk 3: Forecas?ng............................................................................................................................... 26
3.1 Wat is forecas,ng ....................................................................................................................................... 26
Karakteris<eken forecas<ng......................................................................................................................... 26
2
, 3.2 Stabiliteit van de vraag ............................................................................................................................... 27
Varian<ecoëfficiënt (CoVa) .......................................................................................................................... 27
Componenten van de vraagwaarde ............................................................................................................. 27
3.3 Tijdreeksen: forecast modellen ................................................................................................................... 28
Cumula<eve vs. Naïeve forecasts – Level .................................................................................................... 28
Moving Average (MA) – Level ...................................................................................................................... 29
Weighted Moving Average (WMA) – Level .................................................................................................. 29
Exponen<ële vereffening – Level ................................................................................................................. 30
Trend modellen ............................................................................................................................................ 31
3.4 Forecas,ng kwaliteit................................................................................................................................... 32
Forecas<ng accuracy .................................................................................................................................... 32
Forecast bias ................................................................................................................................................ 33
Hoofdstuk 4: Project management ................................................................................................................ 34
4.1 Inleiding ...................................................................................................................................................... 34
Kerngetallen ................................................................................................................................................. 34
Verantwoordelijkheden projectleider .......................................................................................................... 35
Fasering van een project .............................................................................................................................. 35
Hoofdstuk 5: Supply chain resilience ............................................................................................................. 39
5.1 Introduc,e en context ................................................................................................................................. 39
5.2 Theore,sche kaders en aandachtsgebieden ............................................................................................... 39
Supply chain responsiveness en resilience .................................................................................................. 40
Efficiency en resilience ................................................................................................................................. 41
Hoofdstuk 6: Lean en Six Sigma ..................................................................................................................... 43
6.1 Oorsprong ................................................................................................................................................... 43
Lean objec<even .......................................................................................................................................... 43
Lean – geschiedenis ..................................................................................................................................... 44
6.2 De hoofdprincipes van lean ........................................................................................................................ 46
1. Value................................................................................................................................................... 46
2. Value crea<on .................................................................................................................................... 46
3. Pull principe........................................................................................................................................ 47
4. Flow .................................................................................................................................................... 49
3 ondersteunende principes ........................................................................................................................ 49
Lean tools..................................................................................................................................................... 50
Lean in logis<ek en supply chain ................................................................................................................. 51
6.3 Six Sigma..................................................................................................................................................... 53
DMAIC: het stappenplan van Six Sigma ....................................................................................................... 53
Six Sigma – Gauss curve ............................................................................................................................... 54
Six Sigma – casussen .................................................................................................................................... 56
3
, Hoofdstuk 1: Voorraadbeheer
1.1 Introduc,e tot voorraden
Waarom voorraadbeheer en wat is het belang?
Belanghebbenden:
1. Financial manager
- Financiële waarde van de voorraad is belangrijk
- Financiële rapportering naar stakeholders
- OpFmalisaFe van de cashflow (overstock vs understock)
è Wenst zo weinig mogelijk voorraad wegens lager working capital bij hoge voorraden!
2. Warehouse manager
- Plaats-opFmalisaFe in het magazijn (SMCG achteraan, FMCG vooraan, groepage goederen)
- Hoe meer goederen, hoe complexer
- Vermijden van kosten voor obsolete goederen (end of life, shelf life)
End of life cycle: van producten die men niet meer produceert, gebruikt men de spare-parts na verloop
van Fjd ook niet meer.
Shelf life: dit is de levensduur van een product; de route to market mag maximum ¼ zijn van deze
levensduur. Dit doet men om producten zo vers mogelijk op de markt te brengen.
Cycle counHng: op regelmaFge basis op de daluren locaFes in het warehouse tellen.
Wall to Wall count: van de ene muur tot de andere tellen, alle acFviteiten liggen sFl.
Unit of Measure (UOM): soms kan order picker anders denken over één eenheid: 1 doos met 100 nagels
kan de UOM 1 doos zijn, maar ook 1 nagel = duidelijk specificeren (per stuk, per doos, per pallet).
è Vermijden extra handling kosten en streven naar vloOe warehouse processen en minder voorraad
3. Planning afdeling/aankoop afdeling
- Wanneer goederen bestellen?
- Hoeveel goederen bestellen?
- Pieken en dalen opvangen (vb. seizoenen)
- Grote hoeveelheden om korFngen te bekomen
è Streven naar meer voorraden, willen absoluut vermijden dat er tekorten zijn
4. Sales afdeling
- Zo hoog mogelijke customer service graad (OTIF)
- Zo goed mogelijk het koopgedrag in kaart te brengen
è Zo hoog mogelijke voorraden: vermijden van stockbreuk
è Conclusie: er zijn meerdere stakeholders bij voorraden met (soms) tegenstrijdige belangen!
è Financieel manager + warehouse manager vs. purchase manager en sales manager
4
Thomas De Boeck
Docent: K. Buggenhoudt
Jaar: 2025 – 2026
Bedrijfsmanagement: Supply Chain Management
,Inhoudsopgave
Hoofdstuk 1: Voorraadbeheer ......................................................................................................................... 4
1.1 Introduc,e tot voorraden ............................................................................................................................. 4
Waarom voorraadbeheer en wat is het belang? ........................................................................................... 4
Overstock vs understock ................................................................................................................................ 5
Algemene karakteris<eken ............................................................................................................................ 5
Inventory turnover ra<o ................................................................................................................................ 6
Classifica<e volgens posi<e in de supply chain .............................................................................................. 6
Classifica<e volgens type ............................................................................................................................... 7
Classifica<e theore<sche benadering ............................................................................................................ 7
1.2 Voorraadkosten ............................................................................................................................................ 8
Orderkosten ................................................................................................................................................... 8
Voorraadkosten.............................................................................................................................................. 9
1.3 Formule van Camp ...................................................................................................................................... 10
1.4 Re-order point (ROP) ................................................................................................................................... 12
1.5 Safety stock (stochas,sch model) ............................................................................................................... 13
1.6 Out of stock kosten & samengesteld inventory model ................................................................................ 14
1.7 Order methoden (BQ, BS, sS, sQ) ................................................................................................................ 15
BQ-order methode (A&B producten)........................................................................................................... 15
BS-order methode ....................................................................................................................................... 15
sS-order methode (C producten) ................................................................................................................. 16
sQ-order methode ....................................................................................................................................... 16
1.8 Inventory management strategieën ........................................................................................................... 16
Hoofdstuk 2: MPS – MRP – DRP .................................................................................................................... 17
2.1 Produc,e..................................................................................................................................................... 17
Aanvullingsmethoden .................................................................................................................................. 17
2.2 Werkwijze MPS en MRP .............................................................................................................................. 17
NePng ......................................................................................................................................................... 17
Berekening ................................................................................................................................................... 18
Rollend plan ................................................................................................................................................. 18
2.3 Aanvulling via MRP ..................................................................................................................................... 18
2.4 Veiligheidsvoorraad .................................................................................................................................... 19
Veiligheidsvoorraad bij LLC 1,2,3,... ............................................................................................................. 19
2.5 Uitbreiding MRP – MPS – DRP .................................................................................................................... 20
Uitdagingen en beperkingen MPS – MRP .................................................................................................... 20
Bullwhip-effect ............................................................................................................................................. 21
Available to promise (ATP) ........................................................................................................................... 21
Backorder ..................................................................................................................................................... 22
MRP1 – MRP2 .............................................................................................................................................. 22
MRP2 – lange termijn horizon ..................................................................................................................... 23
Distribu<on Requirements Planning (DRP) .................................................................................................. 24
DRP2 – lange termijn investeringsbehoeae................................................................................................. 24
Integra<e MRP en DRP ................................................................................................................................ 25
Hoofdstuk 3: Forecas?ng............................................................................................................................... 26
3.1 Wat is forecas,ng ....................................................................................................................................... 26
Karakteris<eken forecas<ng......................................................................................................................... 26
2
, 3.2 Stabiliteit van de vraag ............................................................................................................................... 27
Varian<ecoëfficiënt (CoVa) .......................................................................................................................... 27
Componenten van de vraagwaarde ............................................................................................................. 27
3.3 Tijdreeksen: forecast modellen ................................................................................................................... 28
Cumula<eve vs. Naïeve forecasts – Level .................................................................................................... 28
Moving Average (MA) – Level ...................................................................................................................... 29
Weighted Moving Average (WMA) – Level .................................................................................................. 29
Exponen<ële vereffening – Level ................................................................................................................. 30
Trend modellen ............................................................................................................................................ 31
3.4 Forecas,ng kwaliteit................................................................................................................................... 32
Forecas<ng accuracy .................................................................................................................................... 32
Forecast bias ................................................................................................................................................ 33
Hoofdstuk 4: Project management ................................................................................................................ 34
4.1 Inleiding ...................................................................................................................................................... 34
Kerngetallen ................................................................................................................................................. 34
Verantwoordelijkheden projectleider .......................................................................................................... 35
Fasering van een project .............................................................................................................................. 35
Hoofdstuk 5: Supply chain resilience ............................................................................................................. 39
5.1 Introduc,e en context ................................................................................................................................. 39
5.2 Theore,sche kaders en aandachtsgebieden ............................................................................................... 39
Supply chain responsiveness en resilience .................................................................................................. 40
Efficiency en resilience ................................................................................................................................. 41
Hoofdstuk 6: Lean en Six Sigma ..................................................................................................................... 43
6.1 Oorsprong ................................................................................................................................................... 43
Lean objec<even .......................................................................................................................................... 43
Lean – geschiedenis ..................................................................................................................................... 44
6.2 De hoofdprincipes van lean ........................................................................................................................ 46
1. Value................................................................................................................................................... 46
2. Value crea<on .................................................................................................................................... 46
3. Pull principe........................................................................................................................................ 47
4. Flow .................................................................................................................................................... 49
3 ondersteunende principes ........................................................................................................................ 49
Lean tools..................................................................................................................................................... 50
Lean in logis<ek en supply chain ................................................................................................................. 51
6.3 Six Sigma..................................................................................................................................................... 53
DMAIC: het stappenplan van Six Sigma ....................................................................................................... 53
Six Sigma – Gauss curve ............................................................................................................................... 54
Six Sigma – casussen .................................................................................................................................... 56
3
, Hoofdstuk 1: Voorraadbeheer
1.1 Introduc,e tot voorraden
Waarom voorraadbeheer en wat is het belang?
Belanghebbenden:
1. Financial manager
- Financiële waarde van de voorraad is belangrijk
- Financiële rapportering naar stakeholders
- OpFmalisaFe van de cashflow (overstock vs understock)
è Wenst zo weinig mogelijk voorraad wegens lager working capital bij hoge voorraden!
2. Warehouse manager
- Plaats-opFmalisaFe in het magazijn (SMCG achteraan, FMCG vooraan, groepage goederen)
- Hoe meer goederen, hoe complexer
- Vermijden van kosten voor obsolete goederen (end of life, shelf life)
End of life cycle: van producten die men niet meer produceert, gebruikt men de spare-parts na verloop
van Fjd ook niet meer.
Shelf life: dit is de levensduur van een product; de route to market mag maximum ¼ zijn van deze
levensduur. Dit doet men om producten zo vers mogelijk op de markt te brengen.
Cycle counHng: op regelmaFge basis op de daluren locaFes in het warehouse tellen.
Wall to Wall count: van de ene muur tot de andere tellen, alle acFviteiten liggen sFl.
Unit of Measure (UOM): soms kan order picker anders denken over één eenheid: 1 doos met 100 nagels
kan de UOM 1 doos zijn, maar ook 1 nagel = duidelijk specificeren (per stuk, per doos, per pallet).
è Vermijden extra handling kosten en streven naar vloOe warehouse processen en minder voorraad
3. Planning afdeling/aankoop afdeling
- Wanneer goederen bestellen?
- Hoeveel goederen bestellen?
- Pieken en dalen opvangen (vb. seizoenen)
- Grote hoeveelheden om korFngen te bekomen
è Streven naar meer voorraden, willen absoluut vermijden dat er tekorten zijn
4. Sales afdeling
- Zo hoog mogelijke customer service graad (OTIF)
- Zo goed mogelijk het koopgedrag in kaart te brengen
è Zo hoog mogelijke voorraden: vermijden van stockbreuk
è Conclusie: er zijn meerdere stakeholders bij voorraden met (soms) tegenstrijdige belangen!
è Financieel manager + warehouse manager vs. purchase manager en sales manager
4
