Author: Pavel Ryvola | Updated:
What is LPA and Flash Audit?
Layered Process Audits (LPA) and quick 5-minute checks (often called Flash Audits, Kamishibai, or Gemba walks in manufacturing companies) are a key tool for ensuring production stability. Unlike in-depth system audits, they focus on rapid, repeated verification of critical steps directly on the line.
The AIAG CQI-8 Standard and LPA Methodology
The Layered Process Audit (LPA) methodology was first formalized by AIAG in the CQI-8 manual. The principle is that the same process or workstation is audited not only by the supervisor, but also at set intervals by the Quality Manager, Production Manager, and randomly even by the Plant Manager.
This "layering" creates a shared responsibility for quality across the entire hierarchy of the plant. Furthermore, experience shows that when management regularly conducts audits on production lines with an LPA checklist in hand, the quality culture radically improves and customer complaints drop.
Examples of questions for different processes
Every manufacturing process requires a specific approach. A good checklist shouldn't be too generic, otherwise it loses its effectiveness. Our generator covers, among other things:
- Assembly and kitting: Questions about torque wrench calibration, the presence of ESD protection, and adherence to the prescribed takt time.
- Plastic Injection (Molding): Checking injection molding machine parameters against the reference card, using Boundary Samples for visual surface defects.
- Machining (CNC): Checking first-piece approval, random measurement of control dimensions, and coolant management.
Why does our generator combine process and system questions?
Practice shows that static questionnaires for a single type of problem quickly lead to routine and so-called operational blindness. An experienced auditor knows they must look up from the machine and observe the operator (and vice versa). Therefore, our algorithm randomly mixes the following for each audit:
- Systemic Questions (Focus): These focus on discipline, standards, 5S compliance, or escalation rules when a nonconformity is detected.
- Technological Questions (Process): These focus on the hard technology of the specific machine (e.g., visual boundary samples for injection molding, gauge calibration for CNC).
This intelligent mix guarantees that the checklist examines the workplace comprehensively and the auditor maintains maximum attention.
How to properly work with the generated checklist?
In the top panel, simply select your process type and the thematic focus of the audit. The application will immediatel generate a professional preview. To obtain a full-fledged PDF file (without a protective watermark) that you can instantly take to the production floor, just enter your corporate email at the bottom. The generate form can then be printed or distributed to your team.
What's next?
LPA (Layered Process Audits) are used to inspect existing processes. If you do not have standardized processes yet, we recommend visualizing them first using a Flowchart. If your audit reveals serious nonconformities, solve them systematically using an 8D Report.