How to build a product risk assessment that actually guides decisions

A folding wooden step stool looks simple until someone stands on its top step with wet shoes, reaches sideways for a high shelf, and shifts weight onto one leg. A usable assessment starts there, with the person and the movement, not with a score. It names the stool, the way it folds, the surface it stands on, and the sequence that could end with a joint giving way.

From that description, the assessor writes a judgement: how serious a fall could be, how easily that sequence could happen in a normal home, and what would make the judgement change. The note should be short enough that the person who assembles the stool can read it in a few minutes and still understand why each point matters.

Children climb stools to reach sinks, older people use them to change a light bulb, and busy adults drag them across a kitchen floor rather than lifting them. Each of those users loads the stool differently. A child may bounce, an older person may grip the top step for balance, and a hurried adult may stand with both feet near one edge.

Foreseeable use includes those behaviours, even when the seller never intended them. The assessment should also cover cleaning, storage in a damp shed, and lending the stool to a neighbour, because a joint that loosens slowly may only show itself after months of such handling. Ignoring those patterns leaves the most realistic harm sequences out of the file.

Illustration: a workshop checks 40 stools from one batch and finds that 20 of them, in round illustration terms, develop a slight sideways sway after repeated folding. Those figures are invented and prove nothing about real stools. They simply give the assessor a concrete question: was sway already considered, and does the note say what amount of sway triggers a repair or a redesign.

If the note is silent on sway, the method has done its job by exposing the gap. The assessor adds a sway check, names who performs it, and records the result beside the original judgement, rather than quietly replacing the judgement with a new one.

Before signing, the assessor should open the stool, fold it, stand on it, and compare the real item with the description in the note, because drawings and memories drift from the finished product.

• Fold and unfold the stool and feel for play in each leg joint.
• Stand on each step in turn and note any tilt, creak, or slip on a smooth floor.
• Check the note names the fall sequence, the judgement, and the reason behind it.
• Write down the next check, who owns it, and what finding would reopen the assessment.

Many stool assessments fail by describing the stool as the designer imagined it, upright on a level floor, used gently, and put away dry. Real kitchens have uneven tiles, wet feet, and stools shoved under a sink. When the assessment skips those details, its judgement rests on a product that does not exist in buyers homes.

Another weakness is copying an assessment from a different stool. A taller stool, a wider top step, or a different hinge changes the fall sequence, even if the wood looks the same. A copied note may sound thorough while answering questions about the wrong item entirely.

Filing is not finishing. The workshop should revisit the note when the hinge supplier changes, when a customer reports a wobble, or when the stool is sold in a new size. Each revisit adds a dated entry, so a later reader can see what changed and why, rather than finding a single judgement frozen at launch.

Finally, the person who packs orders and the person who answers customer messages should both know the main finding in plain words. If only the assessor understands the note, the assessment cannot guide decisions when it matters, which is after the stool has left the workshop. A short handover note for new packers, summarising the joint check in a few lines, helps that understanding survive staff changes and busy periods.