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* EAD - PPCP Prof. Dr. Alvair S. Torres Jr. MRP, ERP * Fontes: Slack, Niguel at al. – Administração da Produção – Editora Atlas (1999) e Corrêa, Henrique L et al in Planejamento, Programação e Controle da Produção – MRP II/ERP – Conceitos, Uso e Implantação – Editora Atlas (1997 Sistema MRP * O foco do sistema MRP envolve a otimização de duas variáveis: Volume. Tempo. * Conceito de demanda dependente e de demanda independente. A B C * Nível 0 Nível 1 Nível 2 Árvore de estrutura de produto. * Árvore de estrutura do produto X Estoque e Parâmetro – Produto “X” 150 acabados em estoque LEF de 50 unidades * Necessidades totais Componente para uma demanda de 380 unidades “X” Nota 1 : quantidades ajustadas ao tamanho dos respectivos lotes Considerando múltiplos dos lotes mínimos Produto X 150 em estoque LEF de 50 unidades * conceito de programação Para frente e programação para trás. * Programação do produto “DX“ Programação do produto “DX” * Formulário de programação MRP * Formulário MRP preenchido: dados iniciais * Formulário de Programação MRP – completa MRP Exemplo Necessidade de produzir 95 unidades X para semana 10 * A(2) X Sheet1 Day: 1 2 3 4 5 6 7 8 9 10 X Gross requirements 95 LT=2 Scheduled receipts Proj. avail. balance 50 50 50 50 50 50 50 50 50 50 On- Net requirements 45 hand Planned order receipt 45 50 Planner order release 45 A Gross requirements 90 LT=3 Scheduled receipts Proj. avail. balance 75 75 75 75 75 75 75 75 On- Net requirements 15 hand Planned order receipt 15 75 Planner order release 15 B Gross requirements 45 LT=1 Scheduled receipts Proj. avail. balance 25 25 25 25 25 25 25 25 On- Net requirements 20 hand Planned order receipt 20 25 Planner order release 20 C Gross requirements 45 40 LT=2 Scheduled receipts Proj. avail. balance 10 10 10 10 10 On- Net requirements 35 40 hand Planned order receipt 35 40 10 Planner order release 35 40 D Gross requirements 100 LT=2 Scheduled receipts Proj. avail. balance 20 20 20 20 20 20 20 On- Net requirements 80 hand Planned order receipt 80 20 Planner order release 80 Sheet2 Sheet3 * B(1) A(2) X Sheet1 Day: 1 2 3 4 5 6 7 8 9 10 X Gross requirements 95 LT=2 Scheduled receipts Proj. avail. balance 50 50 50 50 50 50 50 50 50 50 On- Net requirements 45 hand Planned order receipt 45 50 Planner order release 45 A Gross requirements 90 LT=3 Scheduled receipts Proj. avail. balance 75 75 75 75 75 75 75 75 On- Net requirements 15 hand Planned order receipt 15 75 Planner order release 15 B Gross requirements 45 LT=1 Scheduled receipts Proj. avail. balance 25 25 25 25 25 25 25 25 On- Net requirements 20 hand Planned order receipt 20 25 Planner order release 20 C Gross requirements 45 40 LT=2 Scheduled receipts Proj. avail. balance 10 10 10 10 10 On- Net requirements 35 40 hand Planned order receipt 35 40 10 Planner order release 35 40 D Gross requirements 100 LT=2 Scheduled receipts Proj. avail. balance 20 20 20 20 20 20 20 On- Net requirements 80 hand Planned order receipt 80 20 Planner order release 80 Sheet2 Sheet3 * A(2) B(1) X C(3) Sheet1 Day: 1 2 3 4 5 6 7 8 9 10 X Gross requirements 95 LT=2 Scheduled receipts Proj. avail. balance 50 50 50 50 50 50 50 50 50 50 On- Net requirements 45 hand Planned order receipt 45 50 Planner order release 45 A Gross requirements 90 LT=3 Scheduled receipts Proj. avail. balance 75 75 75 75 75 75 75 75 On- Net requirements 15 hand Planned order receipt 15 75 Planner order release 15 B Gross requirements 45 LT=1 Scheduled receipts Proj. avail. balance 25 25 25 25 25 25 25 25 On- Net requirements 20 hand Planned order receipt 20 25 Planner order release 20 C Gross requirements 45 40 LT=2 Scheduled receipts Proj. avail. balance 10 10 10 10 10 On- Net requirements 35 40 hand Planned order receipt 35 40 10 Planner order release 35 40 D Gross requirements 100 LT=2 Scheduled receipts Proj. avail. balance 20 20 20 20 20 20 20 On- Net requirements 80 hand Planned order receipt 80 20 Planner order release 80 Sheet2 Sheet3 * A(2) B(1) C(2) X C(3) Sheet1 Day: 1 2 3 4 5 6 7 8 9 10 X Gross requirements 95 LT=2 Scheduled receipts Proj. avail. balance 50 50 50 50 50 50 50 50 50 50 On- Net requirements 45 hand Planned order receipt 45 50 Planner order release 45 A Gross requirements 90 LT=3 Scheduled receipts Proj. avail. balance 75 75 75 75 75 75 75 75 On- Net requirements 15 hand Planned order receipt 15 75 Planner order release 15 B Gross requirements 45 LT=1 Scheduled receipts Proj. avail. balance 25 25 25 25 25 25 25 25 On- Net requirements 20 hand Planned order receipt 20 25 Planner order release 20 C Gross requirements 45 40 LT=2 Scheduled receipts Proj. avail. balance 10 10 10 10 10 On- Net requirements 35 40 hand Planned order receipt 35 40 10 Planner order release 35 40 D Gross requirements 100 LT=2 Scheduled receipts Proj. avail. balance 20 20 20 20 20 20 20 On- Net requirements 80 hand Planned order receipt 80 20 Planner order release 80 Sheet2 Sheet3 * A(2) B(1) D(5) C(2) X C(3) Sheet1 Day: 1 2 3 4 5 6 7 8 9 10 X Gross requirements 95 LT=2 Scheduled receipts Proj. avail. balance 50 50 50 50 50 50 50 50 50 50 On- Net requirements 45 hand Planned order receipt 45 50 Planner order release 45 A Gross requirements 90 LT=3 Scheduled receipts Proj. avail. balance 75 75 75 75 75 75 75 75 On- Net requirements 15 hand Planned order receipt 15 75 Planner order release 15 B Gross requirements45 LT=1 Scheduled receipts Proj. avail. balance 25 25 25 25 25 25 25 25 On- Net requirements 20 hand Planned order receipt 20 25 Planner order release 20 C Gross requirements 45 40 LT=2 Scheduled receipts Proj. avail. balance 10 10 10 10 10 On- Net requirements 35 40 hand Planned order receipt 35 40 10 Planner order release 35 40 D Gross requirements 100 LT=2 Scheduled receipts Proj. avail. balance 20 20 20 20 20 20 20 On- Net requirements 80 hand Planned order receipt 80 20 Planner order release 80 Sheet2 Sheet3 * Planejamento das Necessidades de Manufatura [1] [1] Fonte: Mank, Joseph G – Administração da Produção – Editora McGraw-Hill (1987) * Mapa de algumas aplicações de um sistema ERP 18 18 21 21 21 21 21 21 21 21 21 21
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