[1]

These are typically demands from one division of a company on another.
They can either be components, sub-assemblies or finished products. When divisions operate an MRP system, it is not unsusal for a planned order release from the customer division to be entered directly into the "supplier" divisions's system.

[2]

Enas refaat:
The amount of capacity available is stored in the work center file or resource file. The question that arises is, what is the realistic capacity in standard hours available. A theroritical number is not much use in the real world, and the term used for the practical capacity is demonstrated capacity .

[3]

Enas refaat:
Work in process (WIP) is defined as a product or products in various stages of completion throughout the plant, including all material from raw material that has been released for initial processing up to completely processed material awaiting final inspection and acceptance as finished product.
Many accounting systems also include the value of semi finished stock and components in this category.

[4]

Enas refaat:
A make-to-stock company is one where products can be and usually are finished before receipt of a customer order. Customer orders are typically filled from existing stocks, and production orders are used to replenish stocks.

[5]

Enas refaat:
This approach is one typr of make to order that is often put into a separate category.
It is defined as a make-to-order product for which key components (bulk, semifinished, intermediate, subassembly, fabricated, purchased, packaging etc) used in the assembly or finishing process are planned and stocked in anticipation of a customer order. Receipt of an order initiates assembly of the finished products. This is quite useful where a large number of finished products can be assembled from common components.

[6]

Enas refaat:
A make to orderproduct is one that is finished after receipt of a customer's order. The final product is usually a combination of standard items and items custom designed to meet the special needs of the customer. Frequently long lead time components are planned prior to the order arriving in order to reduce the delivey time to the customer. Where options or other sub assemblies are stocked prior to customer orders arriving, the term "assemble to order" is frequently used"

[7]

Enas refaat:
Engineer to order is defined as products whose customer specifications require unique engineering design, significant customization or new purchased material. Each customer order results in a unique set of part numbers, bills of material and routings

[8]

Enas refaat:
The planner has the responsibility to ensure that the right work is performed at the right time to enable the next level of assembly or manufacture to take place in line with the requirements to meet the MPS. He must in conjunction with manufacturing supervision and if necessary , the master scheduler revise dates where overloads occure in certain periods. This may mean altering delivery dates to customers as a last resort. We know that overall the work should fit because of the checks that were carried out at the resource requiremnets planning level and the balancing by the mastr scheduler using rough cut capacity planning. The balance may be out at the lower level due to the varied lead times on the different manufacturing orders, thus creating overloads and under-loading on the work centers in any one time period

[9]

Enas refaat:
Production reporting is the process of feedback from the production work shops on the progress being made on each manufacturing order.