THE L3 SYSTEM — QUALITY CONTROL IN MANUFACTURE 981 



Table I 



A number of special forms were developed to facilitate the preparation , 

 of control charts, two of which are shown in Fig. 4 and Fig. 5. Since these 

 control charts are directly related to the manufacture of the product, the 

 cost of their preparation is included in the cost of the product, either by 

 having the operation handled by production personnel or by the ap- 

 plication of appropriate cost factors. This required in many cases the 

 preparation of specific instructions to factory personnel in the form of 

 manufacturing layouts which are also used as a basis for computing 

 manufacturing costs and wage incentive rates. 



One of the most serious problems in the application of these methods 

 is the accumulation of large inventories of product when the manufactur- 

 ing processes fail to meet the distribution requirements. In the case of 

 regular maximum and minimum limits, procedures for the disposal of 

 non-conforming product are direct and well kno^\Tl. In the case of dis- 

 tribution requirements however, there may be substantial quantities of 

 product which meet the "^" limits but fail to meet the required dis- 

 tribution. Product which originally cannot be packaged must be put 

 aside with the hope that product subsequently manufactured mil result 

 in combinations which will meet the required distribution. The discussion 

 of applications to the products listed in Table II mil show that a great 

 measure of success has been realized in the solution of this problem. 



Table II 



