أشهر 7 أخطاء في عملــــــــــية التخطيـــــط

1.     انفراد أفراد التخطيط بعملية التخطيط بدون اشراك التنفيذيين

2.     الغرق في تحليل الارقام بدون رؤية

3.     بناء نظام التخطيط على أساس عدم وجود احتمال للخطأ أو للفشل في أداء عملية ما

4.     الاتجاه الى الاستحواذ على مصادر الموارد و اهمال رسالة الشركة

5.     اتخاذ القرارات بدون تحليل البدائل

6.     التركيز على البيئة الخارجية (موردين وعملاء ومنافسين ) على حساب البيئة الداخلية و المتطلبات التنظيمية و الثقافية لدى العاملين بالمؤسسة

7.     اعتماد النظام على التنبؤ بالمتغيرات عند وقت معين وعدم سماحيته بالتغير عند تغير الظروف

 

 

 

 

Ahmed Redwan, MBA

Production Engineer

Shorouk for Modern Printing and Packaging

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Lean Moving Forward blog

Considerations in adding capacity

1. Maintaining system balance:

• Reasons of imbalance:
• Best operating levels for each stage generally differ
• Variability in product demand and the processes themselves generally leads to imbalance except in automated production lines.
• Dealing with imbalance:
• Add capacity to stages that are bottlenecks such as:
• scheduling overtime
• leasing equipment
• purchasing additional capacity through subcontracting
• Use of buffer inventories in front of the bottleneck stage to ensure that it always has something to work on
• Duplicating the facilities on one department on which another is dependent.(duplicate the flow facilities)

       2. Frequency of capacity additions:

• Upgrading capacity too frequently is expensive. Direct costs include removing and replacing old equipment and training employees on the new equipment. the new equipment must be purchased often for more than the selling price of the old. There is the opportunity cost of idling the plant or service site during the change over period.
• Upgrading the capacity too infrequently is also expensive. Infrequent expansion means that capacity is purchased in larger chunks. Any excess capacity that is purchased must be carried as overhead until it is utilized.

       3. External sources of capacity

• In some cases it might be cheaper to not add capacity at all but rather to use some existing external source of capacity.
• Two common strategies used by organizations are outsourcing and sharing capacity.

Ahmed Redwan, MBA

Production Engineer

Shorouk for Modern Printing and Packaging

>>

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مدونة وبعدين

Lean Moving Forward blog