Just in Sequence - Implementing JIS Concepts

Implementing JIS Concepts

Just In Sequence implementations introduce a number of new process requirements on top of Just In Time practices. A production sequence or final assembly sequence must be shared upwards to suppliers and sub-contractors. Feedback to customers must be organized according to the scheduled output to earn all positive financial effects. For these and other reasons, the actual production sequence must be "broadcast" out to all relevant parties once it is firm. This "broadcast" can be done over the phone, paper, email, or other automated IT system. UN/EDIFACT supports an EDI message standard called DELJIT as one standardized way to communicate this information.

Once the sequence is broadcast, each party must immediately take action to deliver sequenced parts in time. In many cases the turn-around time from broadcast to final assembly is less than 2 hours, with some components required in 30 minutes or less. With this time frame, there is little room for errors. In addition, quality inspection and poka-yoke must be implemented in the sequencing step to guarantee that the sequenced components match the assembly sequence perfectly. In many cases, suppliers must manage periodic sequence reversals, for example, when loading racks into a truck, since the first rack into the truck is the last one to come out. Employees and systems must also properly manage exceptional scenarios, such as re-processing damaged items after initial sequencing, skipping slots for scrapped items, etc. Just In Sequence implementations can only be successful if all of these processes are implemented correctly and all people involved understand what is at stake.

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