Production Performance Brief
How to Find Bottlenecks in a Water Bottling Line
The machine with the longest single stop is not always the constraint. A bottleneck is the condition that most consistently limits good output over the chosen period.
Direct answer
What evidence identifies a true production bottleneck?
Review point 01
Build a common timeline
Record production, stops and states at consistent intervals. Without aligned timestamps, symptoms downstream can be mistaken for causes.
- Machine run and fault state
- Starved and blocked duration
- Buffer level or occupancy
- Good and reject counts
Review point 02
Distinguish constraint from symptom
A stopped packer may block the filler, while a weak blower may starve it. Review direction of propagation before assigning corrective action.
- Look upstream when starved
- Look downstream when blocked
- Check utilities when several machines fluctuate
- Validate sensor and counter logic
Review point 03
Test one change at a time
After a likely constraint is identified, make a controlled adjustment and compare the same production window. Preserve the baseline and observation record.
- Define expected effect
- Control the reference SKU
- Track new failure modes
- Update the loss Pareto
Questions before specification
Frequently asked questions
Answers are planning guidance. Project requirements and performance remain subject to confirmed data and agreements.
Can operators identify the bottleneck by observation alone?
Operator observations are valuable, but time-aligned records are needed to separate frequent constraints from memorable incidents.
Does the bottleneck stay in one machine?
No. It can move with bottle size, pack format, material quality, maintenance condition, utilities or production schedule.