Factory operating control
Control a Planned Shutdown and Restart
A controlled shutdown defines the last acceptable product, stops new material introduction, reconciles product and packaging, cleans or preserves equipment, isolates energy safely and records the released condition. Restart uses a new readiness decision rather than assuming the previous production state still applies.
01 · Buyer or factory inputs
Information the decision needs
- Reason, start time and expected stop duration
- Product, material and finished-goods status at cutoff
- Supplier shutdown, preservation and restart instructions
- Cleaning, chemical, drainage and waste requirements
- Planned maintenance tasks and isolation needs
- Restart schedule, staffing and material availability
02 · Operating objective
What completion should achieve
Protect people, product, equipment and traceability through the complete stop period and return the factory to production through documented readiness checks.
03 · Required controls
Turn the objective into controlled work
- 01
Define the final normal-production batch and time boundary
- 02
Stop, identify, reconcile or dispose of open product and packaging streams
- 03
Complete the approved cleaning, drainage, preservation and energy-isolation sequence
- 04
Record equipment condition, open defects, removed parts and changed settings
- 05
Assign restart prerequisites and evidence before the maintenance or shutdown team leaves
- 06
Use first-off hold and release controls again when production resumes
04 · Factory interfaces
What connects to this decision
- Production cutoff to batch traceability
- Cleaning status to maintenance access
- Maintenance work to hygienic re-release
- Warehouse reconciliation to material return or quarantine
- Restart readiness to first saleable batch
05 · Evidence to collect
Records that make review possible
- Shutdown plan and time-stamped execution record
- Material and product reconciliation
- Cleaning, preservation and isolation records
- Maintenance completion and open-work register
- Restart checklist and first-off release
06 · Common failure modes
Do not confuse a pattern with a confirmed cause
1Open product or materials lose status during the stop
2A long stop is treated like a short normal pause
3Maintenance changes occur without recipe, drawing or spare traceability
4Restart begins before hygienic and quality release conditions are restored
07 · Responsibility boundary
Name who confirms each part
| Role | Possible responsibility in this stage |
|---|---|
| Operations owner | Defines the operating condition, assigns the record and confirms that actions fit the production plan. |
| Quality owner | Defines product-status, sampling, release and escalation controls within the factory system. |
| Maintenance owner | Confirms safe technical work, equipment condition, evidence and restart requirements. |
| Supplier / Allot Tech | Reviews the documented interface or symptom and coordinates project-specific questions within the agreed scope. |
08 · Completion criteria
Evidence that the stage can advance
- The shutdown boundary and disposition are recorded
- Equipment is clean, preserved or isolated as required
- All maintenance changes and open defects are visible
- Restart prerequisites have owners
- The first restarted batch follows controlled hold and release
Decision support
Questions operating teams ask
Does every short stop need a full shutdown plan?
No. The factory should define stop-duration and product-risk categories that trigger specific preservation, cleaning and restart controls.
Who releases equipment after maintenance?
The factory should name the maintenance, operations, safety and quality approvals required for the actual work and product risk.
Editorial responsibility: Allot Tech (Suzhou) Co., Ltd. · Last updated .