The Modern Manufacturing & MRP Knowledge Glossary
Authoritative engineering definitions and practical explanations for multi-level BOMs, shop-floor IoT telemetry, finite scheduling, outside subcontracting, and industrial costing.
Multi-Level Bill of Materials (BOM)
A hierarchical tree-structured document listing all raw materials, sub-assemblies, and components required to manufacture a finished product across multiple nested production levels.
Phantom Assembly (Blow-Through BOM)
A non-stocked, transient sub-assembly in a BOM that exists for engineering design clarity but is immediately assembled and consumed directly on the production line without entering a warehouse.
Overall Equipment Effectiveness (OEE)
The gold-standard manufacturing metric measuring the percentage of truly productive manufacturing time: Availability x Performance x Quality.
Fixed Setup Scrap vs. Variable Run Scrap
The engineering distinction between fixed calibration material consumed before line start and variable defect rates per cycle.
Finite Capacity Scheduling (FCS)
A production scheduling methodology that plans work orders strictly within the real, unbreachable limits of available machine hours, tooling sets, and skilled labor.
Outside Processing & Virtual Vendor Warehouses
Tracking raw material custody at subcontractors (heat treaters, coaters) while automatically absorbing toll processing fees into landed product costs.
Dimensional Inventory for Natural Stone
Recording quarry blocks and slabs by Length x Height x Thickness, tracking gangsaw square-meter yields and book-matched bundle photos.
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