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Length: 1152 (0x480)
Types: TextFile
Names: »PURCH.MOD«
└─⟦6ae1c04a5⟧ Bits:30004364 SW1656 IFPS/Personal Version 2.10 release 1.1
└─ ⟦this⟧ »PURCH.MOD«
COLUMNS 1..12
ØØ
ØØ The standard EOQ model is:
ØØ
ØØ ------------------------------------------
ØØ / 2 * ORDER COST * ANNUAL REQUIREMENTS
ØØ EOQ = / --------------------------------------
ØØ / ANNUAL STORING COST
ØØ Ø/
ØØ
ØØ This model determines the raw materials input required and
ØØ the amounts that must be purchased to fill all orders.
ØØ
SCHED PROD = DATA
RM INPUT = 2 * SCHED PROD - SCRAP RM
SCRAP RM = 1% * RM INPUT
ACCUM RM INPUT = RM INPUT + PREVIOUS
ØØ
ØØ Raw materials input determined above, purchase below.
ØØ
BEG INV RM = DATA,PREVIOUS EI RAW MAT
EI RAW MAT = 2 * FUTURE SCHED PROD FOR 11,PREVIOUS
RM REQ = MAXIMUM(0,EI RAW MAT + RM INPUT - BEG INV RM)
ACCUM RM REQ = RM REQ + PREVIOUS
ØØ
ØØ And finally, determining the EOQ
ØØ
ORDER COST = DATA
ANNUAL RM REQUIREMENT = ACCUM RM REQÆ12Å
ANNUAL RM STORING COST = 1
FACTOR = 2 * ORDER COST * ANNUAL RM REQUIREMENT / '
ANNUAL RM STORING COST
EOQ = FACTOR ** .5
«eof»