[ADD] manufacturing: MRP Terminologies

manufacturing/overview/main_concepts.rst

@@ -5,4 +5,5 @@ Main Concepts
 .. toctree::
    :titlesonly:
 
-   main_concepts/intro
+   main_concepts/intro
+   main_concepts/terminologies

manufacturing/overview/main_concepts/terminologies.rst

@@ -0,0 +1,107 @@
+===========================
+Manufacturing Terminologies
+===========================
+
+.. glossary::
+
+    Bill of Materials
+
+        A bill of materials (BoM) is a document that describes the materials,
+        the quantity of each material, and the steps required to manufacture a
+        product. Depending on the industry and the nature of the finished
+        product, a different name may be used to describe the same document. For
+        example, in the pharmaceutical industry, the term “recipe” may be used.
+
+    Cycle
+
+        A production cycle is a frame of time during which an entire
+        manufacturing process can be fulfilled.
+
+    Downtime or Leave
+
+        Time during which a resource is unavailable. If the resource is a
+        machine, the unavailability is downtime, while if the resource is human,
+        unavailable time is called a Leave.
+
+    Finished products
+
+        Finished products are the final output of a manufacturing process. They
+        are normally not intended to be used as input into another manufacturing
+        order of the company.
+
+    Kit
+
+        A kit is a set of components that are described by a bill of materials,
+        but which are delivered separately rather than assembled or mixed.
+
+    Multi-level Bill of Materials
+
+        A bill of material can quickly grow very complex. To keep it manageable,
+        it can be broken down into several smaller manufactured parts, each
+        having its own BOM. These parts are typically referred to as
+        sub-assembly of intermediate products.
+
+        Defining a BOM in multiple levels reduces the complexity of the
+        top-level document and allows components to be reused in other BoMs.
+
+    Phantom Bill of Material
+
+        A phantom bill of material is always used in the context of multi-level
+        BOMs. It allows to add a sub-assembly as part of a bigger end-product
+        while avoiding to trigger a separate manufacturing order for the
+        sub-assembly.
+
+        As such, when a manufacturing order for the final product is launched,
+        the components of the sub-assembly are reflected in the parent BOM as if
+        they were direct components of the parent BOM.
+
+        Phantom BOM are thus used for grouping a set of components with the aim
+        of reusing them in many other BOM without the need to launch separate
+        manufacturing orders for the sub-assemblies.
+
+    Raw Materials
+
+        Raw materials and components constitute the input that are transformed
+        to produce semi-finished or finished goods.
+
+        The transformation here can take many aspects according to the industry.
+        It can be simple assembly, welding, mixing, etc.
+
+    Routing
+
+        A routing is a document that describes a series of Work Orders and the
+        Work Centers at which they will be carried out
+
+    Semi-finished products and sub-assemblies
+
+        These are products which are manufactured with the purpose to be
+        consumed in another manufacturing order.
+
+    Work Order Operations
+
+        Work Order Operations specify the set of activities necessary to fully
+        process a manufacturing order. Each activity or operation takes some
+        time to be completed and is performed into a determined production unit
+        (also called work center).
+
+    Work Order
+
+        A work order is a single manufacturing operation that is scheduled for
+        execution on a given date and a given duration.
+
+    Work Center
+
+        Work centers identify production units and their resources. They are
+        used to represent the plant capacity as well as costing information. The
+        capacity is a combination of resources and their availability time.
+
+    Resources
+
+        In manufacturing a resource can be a human being (employee) or machine
+        available in a work center.
+
+    Working Time
+
+        Each resource has its normal working time. For instance, machines can be
+        set up to operate 7 days a week 20 hours out of 24.
+