How a 40-person plastics moulder plans around power cuts

This story shows a practical response to planning heavy jobs into the hours power is usually stable.

The business

This composite concerns a injection moulding business with about 40 people. Granule batches, mould availability, shot counts and power interruptions affect daily choices. Operators need a stable plan and approved settings. The production supervisor manages the daily planning work. The production manager is called when a commitment changes or a decision exceeds normal authority.

Records may be spread across confirmed orders, machine availability, stores position and shift output sheets. This story centres on this recurring task: planning heavy jobs into the hours power is usually stable.

What was going wrong

A written rule changes the choice: any rush insertion names the work it will displace. The difficulty is applying the rule to real exceptions. The team can usually explain the situation after several calls. That explanation is rarely attached to the document that the next shift or the customer sees. In this case, the important missing link is list machines sensitive to voltage drops. It is not enough to know that someone spoke about it.

The second problem is timing. When a date is promised without checking whether work can be released and completed, the check happens too late to change the next commitment.

What they changed

The team would start by giving one person responsibility for the production plan and job card board. Its first rule is simple: Any rush insertion names the work it will displace. Staff can still make calls and use WhatsApp, but the approved reference and the reply return to that record. One owner keeps the entry current, and another person handles decisions outside the routine limit.

For this particular problem, the operating instructions are concrete:

1. First check: List machines sensitive to voltage drops. Keep a reference to the source rather than a summary from memory.
2. Next action: Move suitable runs to reliable supply windows. Add the responsible role and the time the next answer is needed.
3. Decision point: Record forced restarts. Do not quietly replace an old promise or technical record.

The team can copy this small register. Both entries below are illustrative examples, not records of a real business.

At the end of the review, anything still uncertain stays open. The next person should be able to find the original source, understand which part is confirmed and see who is expected to act. If an approval involves price, safety or compliance, the authorised manager makes that decision.

What a normal morning looks like now

The production supervisor opens the production plan and job card board alongside confirmed orders, machine availability, stores position and shift output sheets. They look first for work promised today and then for items missing an owner or proof. The production manager does not need the complete history retold. Only the exceptions, their business effect and the requested decisions reach that desk.

A useful meeting ends with the reference, next action and date written down. The team checks the same list later rather than asking each department for a fresh verbal status. A plan must reserve time for changeovers and rework. A full machine calendar does not mean a realistic plan.

What did not work at first

A likely first attempt is adding more columns or asking everybody to update another report. People then spend time copying entries from their own registers. A second attempt is to mark cases closed after a reassuring phone call. Neither establishes whether the underlying goods, amount or instruction has been checked.

The simpler practice keeps the original reference and records only what has changed. A disputed entry remains disputed. If the team cannot find evidence, it names the person who can, and sets a time for the next check.

What is still not solved

A register cannot remove a material shortage, a customer's disagreement or a long outside lead time. It can expose the risk early enough for a person to decide. This story does not claim an achieved saving, improved margin or shorter delivery time. The useful outcome to measure would be fewer unowned exceptions and a clear record of decisions.

If you want to try this

1. Open Weekly production plan and choose one live case matching this story. Identify the exact trigger and finish condition.
2. Copy the fields from Shift production report. Enter the source, one responsible person, the next check and its date. Use actual records, not the example figures here.
3. At the next review, compare the register with the physical or financial evidence. If the same gap returns, revisit POwer problems damage machines and change the control at that point.

Read next

• POwer problems damage machines
• Weekly production plan
• Shift production report