A Load Schedule for the Assembly Production of Specified Orders Relative to a Plant’s Capacity
Using the provided loading case study, make a schedule of the production load
for the specified assemblies of components relative to the available production
capacity. Estimate the earliest date of delivery ex-manufacturer’s warehouse for
an order placed in the 20th week for 100 assemblies (product type A).
Additionally, estimate the starting and final week for each individual sub-
assembly and component and the date of ordering raw materials. Use both
forward and backward load.
Key Words: Schedule; Loading; Forward Loading; Backward Loading; Critical
Path Analysis; Critical Path Component; Finite Loading
Operations and quality management involves the management of resources for
the production of goods and services. This includes such functions as work force
planning, inventory management, logistics management, production planning
and control, resource allocation; and emphasises total quality management
principles. Operations managers deal with people, materials, technology and
deadlines (Halevi, 2001).
Loading indicates the specified time required to produce a single unit of the
specified product in individual manufacturing facilities involved in the
production of the product and further placement of orders to production
departments, such that: an optimum utilisation of available resources is
achieved; facilities overload is avoided; realistic dates of producing ordered
quantities are defined; out-of balance production facilities are highlighted in
order to take any corrective action as necessary to avoid this situation
Limit loading implies to load the work schedule of a specific production unit
until the time corresponding to the specified capacity of this facility is reached.
This particular method of load definition is used to determine the realistic dates
of delivery of required component parts and products. It is assumed here that a
limit capacity has already been defined for each individual production unit to be
involved (Powell et all., 1995). Additionally, it is also assumed that loading
information for each individual order is already available by the time the order
is placed to the production department, as is the case being discussed here. The
problem to be solved here is how to distribute this load information among
different production units.
The two methods to accomplish this distribution are the Forward and backward
loading. The forward loading begins with the present date and loads jobs
forward in time. The processing time is accumulated against each work centre,
assuming infinite or finite capacity. In this case, due dates may be exceeded if