Manufacturing bill of materials

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A manufacturing bill of materials (MBOM), also referred to as the manufacturing BOM, contains all the parts and assemblies required to build a complete and shippable product.

MBOM is a type of bill of materials (BOM). Unlike Engineering bill of materials (EBOM), which is organized with regards to how the product is designed, the MBOM is focused on the parts that are needed to manufacture a product. In addition to the parts list in an EBOM, the MBOM also includes information about how the parts relate to each other. In a batch execution system such as ISA-88, the MBOM will refer to the Formula part of the Recipe. A Recipe will include a "Recipe Procedure" and "Equipment Requirements" in addition to the Formula. The "Recipe Procedure" explains the steps that you go through to make the end product. The "Equipment Requirements" describes the machines and tools that are necessary to make the product. [1] In ISA-95 terms, the MBOM will refer to the "Material Specification" in the "Product Definition Model". [2]

Bill of materials

A bill of materials or product structure is a list of the raw materials, sub-assemblies, intermediate assemblies, sub-components, parts, and the quantities of each needed to manufacture an end product. A BOM may be used for communication between manufacturing partners or confined to a single manufacturing plant. A bill of materials is often tied to a production order whose issuance may generate reservations for components in the bill of materials that are in stock and requisitions for components that are not in stock.

An engineering bill of materials (EBOM) is a type of bill of materials (BOM) reflecting the product as designed by engineering, referred to as the "as-designed" bill of materials.

S88, shorthand for ANSI/ISA-88, is a standard addressing batch process control. It is a design philosophy for describing equipment, and procedures. It is not a standard for software, it is equally applicable to manual processes. It was approved by the ISA in 1995 and updated in 2010. Its original version was adopted by the IEC in 1997 as IEC 61512-1.

An MBOM is not the same as "as manufactured" or "as built". The MBOM can be viewed as the ingredients in a recipe to make a cake, where as "as built" refers to the actual materials that were consumed to make the cake. In ISA-88 terms "as built" is the same as the batch record, in ISA-95 terms "as built" is the same as a "Segment Response" in "Production Performance". [3]

The details in an MBOM are good enough to allow it to be used in a Manufacturing Operations Management (MOM) System or Manufacturing Execution System (MES). The MBOM typically contains more information than what is needed to do the MRP (Materials Resources Planning) part of an MPS (Master Production Schedule) in an ERP (Enterprise Resource Planning) system.

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References

  1. ANSI/ISA–88.01–1995
  2. ANSI/ISA–95.00.02–2001
  3. ANSI/ISA–95.00.02–2001