PSC’s Engineering Approach

Identify the required hand function, then review whether the task or its control interface can change.

Start higher in the control hierarchy

Examine elimination and substitution before engineering the remaining hand function. Procedures and PPE remain part of managing residual risks.

Match the interface to the task

Load geometry, contact point, movement, access and reach determine the working end. More distance is useful only when the operator can retain practical control of the operation.

Review the final positioning phase

The Last 300 mm Rule™ draws attention to final alignment and placement. It is a task-analysis concept, not a universal safe separation distance.

Verify the revised method

Observe the complete task after the change. Check whether hands stay out of the identified exposure, whether control is retained and whether the new method creates other exposures.

Discuss your
operation with PSC.

Tell us your location, industry and application priorities.

Technical reading

The Hand Exposure Hierarchy™ — Doctrine 03 PDF ↓Engineer the Hand Out of the Hazard™ — Field Edition PDF ↓Find The Hand™ — Illustrated Field Guide PDF ↓Engineering the Hand Out of the Hazard — PSC Doctrine v1.0 PDF ↓The Last 300 mm Rule™ — Doctrine 02 PDF ↓Find The Hand™ — Global Hand-Exposure Methodology PDF ↓The Human Hand Is Not a Tool™ — Doctrine 01 PDF ↓