The DPP for Industrial Machinery

Most passport thinking assumes a product that is designed once, manufactured many times identically, sold, used and eventually discarded. Industrial machinery violates every part of that assumption.

Configuration breaks the class model

A passport model normally separates facts true of a product design from facts true of one unit. Machinery frequently has no meaningful design layer, because each machine is assembled to a specification agreed with one customer.

For the third row, the unit record carries nearly all the substance. That is expensive, and it is also how the sector already operates — a machine ships with a documentation package describing that specific machine, because nothing else would be useful.

Machines are modified, not replaced

A production line installed twenty years ago is unlikely to be the line that was commissioned. Components have been replaced with different parts, control systems retrofitted, capacity uprated and safety systems modernised.

This is a genuine modelling requirement rather than a nice-to-have. The record must accept modification events that change the declared configuration, while retaining what was true before, so that both the current state and the history remain available.

Substantial modification changes who is responsible

There is a regulatory dimension here that machinery users frequently underestimate. Modifying a machine substantially can make the modifier the manufacturer of a new machine, with the conformity obligations that carries.

Where that line sits is a matter of judgement, and it turns on whether the modification introduces new hazards or changes the machine’s intended function. A factory that uprates a line’s capacity may have created a new machine in the legal sense without intending to.

A passport that records modifications with dates and descriptions is directly useful here, because it documents what changed and when, which is the evidence any later assessment of that question depends on.

Service life outlasts the systems

A thirty-year service life is long enough that the PLM system holding the original design will have been replaced, possibly several times, and the original manufacturer may no longer exist.

The final step is where the cost of losing the record materialises. A machine with complete history can be economically rebuilt; the same machine without it is assessed from scratch and frequently scrapped because the assessment costs more than the residual value justifies.

The buyer wants this more than the regulator

Machinery is unusual in that the commercial pull for product data is stronger than the regulatory push, which changes how a programme should be justified internally.

• Maintenance planning — which parts are fitted, what is due, and what has already been replaced.
• Spare part identification — the largest single source of avoidable downtime is ordering the wrong part.
• Energy performance — increasingly a procurement criterion for industrial buyers.
• Residual value — a documented machine is worth measurably more at resale.
• Compliance evidence — the buyer inherits obligations they need documentation to discharge.

The second item is the one that funds these programmes. Downtime costs on a production line are large enough that reliable part identification pays for the data work on its own, independent of any regulation.

Practical design decisions

Three choices follow from the characteristics above and are worth settling before building anything.

Make the unit record primary rather than the class record, since class facts are thin. Model modification as first-class events rather than as edits, so history survives. And design for transfer of custody of the record itself, because the machine will outlive at least one owner and probably the manufacturer.

The third is the least considered and the most consequential. A record that only the original manufacturer can maintain becomes unmaintainable at exactly the point in a machine’s life when it matters most.

Practically this means the record should be exportable in full, in a format that does not depend on the manufacturer’s systems remaining available, and it should be handed over at sale in the way a documentation package already is. That is a contractual arrangement as much as a technical one.