Bill of Material

BOM adalah daftar lengkap dari komponen yang membentuk suatu technical object atau assembly. BOM akan berisi material number beserta jumlahnya. Komponen BOM bisa memiliki berupa material/part atau assemblies. Dalam modul PM, BOM dibagi menjadi 3, antara lain:

  1. Equipment BOM: suatu komponen penyusun berupa material/part yang hanya dimiliki oleh suatu equipment tertentu
  2. Functional Location BOM: suatu komponen penyusun berupa material/part yang hanya dimiliki oleh suatu functional location tertentu
  3. Material BOM: suatu komponen penyusun berupa material/part yang bisa digunakan untuk beberapa equipment yang mempunyai struktur komponen (construction type) yang sama

Keuntungan dengan adanya BOM adalah memudahkan pencarian suku cadang atau komponen dari suatu equipment tertentu, serta memungkinkan terjadinya pertukaran suku cadang antar equipment.

SAP Menu Path :

SAP Menu → Logistics → Plant Maintenance → Management of Technical Objects → Bill of Material


Maintenance BOM utamanya digunakan untuk tujuan berikut:

  • Structure description

Sebuah maintenance BOM menggambarkan struktur dari obyek teknis atau material. Maintenance BOM dapat menentukan persis di mana kegiatan pemeliharaan yang harus dilakukan pada objek teknis.

  • Assignment of spare parts

Sebuah maintenance BOM digunakan dalam Plant Maintenance untuk menetapkan suku cadang untuk objek teknis atau material. Hal ini ditunjukkan pada gambar di bawah

bom


Implementation Considerations

Using maintenance bills of material presents the following advantages:

  • Materials planning (when using maintenance task lists)

The use of maintenance BOMs is advantageous for material planning, because you can perform material planning when creating a maintenance task list. The link between the task list and the maintenance BOM is created as follows:

  • Using the technical object BOM for maintenance task lists for technical objects
  • Using the assembly in the header for general task lists

The link to a maintenance BOM enables you to assign materials that have already been planned for the technical object or the assembly to the individual operations in the task list. You can use the structure list or the structure graphic to do this. As both display options provide a detailed overview of all the materials of the BOM, material planning is simplified considerably.

For more information on maintenance task lists, refer to the document PM – Maintenance Task Lists.

  • Materials/spares planning (when using maintenance orders)

Maintenance bills of material support you during materials or spares planning by providing you with an overview of all materials/spare parts that could be required in the maintenance order. This enables you to assign to the order all the materials you require and makes materials/spares planning considerably easier.

For more information on maintenance orders, refer to the document PM – Maintenance Orders.

  • Locating malfunctions (when using maintenance notifications)

Maintenance bills of material support you when locating malfunctions by providing you with an overview of all components that make up a technical object. From this overview you can easily select the object for which you want to create a malfunction report. This enables you to locate the malfunction in the technical object more precisely.

For more information on maintenance notifications, read the document PM – Maintenance Notifications.


Integration

BOMs contain important master data, which is used in many organizational areas, such as production, materials planning, product costing and maintenance.


Features

In Plant Maintenance, multi-level bills of material (BOMs) are usually used. They can have as many levels as required. The highest level in a multi-level BOM (Level 0 in the figure below) represents a piece of equipment or a complete technical object. The lower levels of the BOM (Levels 1 and 2 in the figure below) represent the components making up the technical object, and their components:

bom 2

The BOM structure is reflected in the different technical categories of BOM provided in the PM system:

  • Simple BOM

The first BOM that you create for a technical object or material has no defined technical category and a simple structure. It is described as a “simple BOM”.

  • Variant BOM

Variant BOMs have a more complex structure. They are used to group together several BOMs to describe different objects that have a high proportion of identical parts.

  • Multiple BOM

Multiple BOMs have the most complex structure. They are used to group together several BOMs to describe one object, for which different combinations of materials are used for different production methods. Multiple BOMs are usually used in production planning and have little or no use for plant maintenance.

For more information on multiple bills of material, refer to the document PP – Bills of Material Guide.

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