Bagged Lots or Loose Parts in a Shared Bin?

Keep parts in separately identified groups when the next person needs to distinguish their lot, receipt or revision. A bin labeled with one part number identifies the type of part. It does not, by itself, identify which receipt an individual loose piece came from.

If those distinctions do not matter for your process and the parts are interchangeable under your own specification, shared loose storage may be a candidate. Decide that requirement before choosing the bagging method.

Give each group the identity the picker needs

Consider this hypothetical stockroom example: part BR7 arrives as revision A from receipt X and revision B from receipt Y. The parts look alike. The work instruction requires revision A for one assembly and revision B for another.

Pouring both groups into a bin marked BR7 leaves that instruction without a physical selection method. Keeping each group in its own identified bag lets the picker connect the contents with the recorded revision and receipt, provided the identification remains with the correct group.

PZ215 clear reclosable polypropylene bags are listed at 6 × 8 inches, 4 mil, and 1,000 bags per case. They are a bag format to evaluate for these groups. The bag itself does not create a lot record or establish that mixed contents have been separated correctly.

Keep the identity through a partial pick

The first group's balance is 20 − 8 + 3 = 15. Five parts were used, so total stock falls from 35 to 30. The ending total alone does not establish the split between revisions. Keep the group record as well as the combined part-number total.

While eight parts are away from storage, their identity still needs to travel with them. Return the three unused parts to the original group only when that identity is known. If it is uncertain, set them aside for the responsible person's review instead of guessing from appearance.

Choose where the identifier will remain

Define what identifies the bag's contents, where the record is displayed and how it stays connected when the bag is opened. Use the actual marking, attached identification or insert method selected for the job. Check readability with the loaded bag; clear film alone does not guarantee a readable record.

When a bag is emptied and assigned to another group, remove obsolete identification before the next assignment. If the process allows a group to be divided between bags, each resulting bag needs enough information to reconnect it with that group's record.

Approve the storage arrangement

Try the largest intended group in a sample bag, close it and rehearse the partial-pick and return sequence. Evaluate the actual loaded arrangement in its storage location. A listed 6 × 8 inch bag size does not establish fit inside a particular bin.

Record PZ215 with the group-identification method and return procedure. Choose this approach because the identity must remain available to the next decision, then calculate bag quantities from the groups your process actually keeps separate.