The shop floor · 2.5

Technical data packages and what they contain

Technical data packages and what they contain. What the requirement says, what it means in practice, and what an assessor will ask.

For an independent reference point, see MITRE ATT&CK for ICS.

What it contains

More than the drawing

A technical data package is the set of information defining an item well enough to make and inspect it. Depending on the programme it can include models, drawings, specifications, materials and process requirements, quality provisions, and instructions.

Suppliers frequently protect the model and the drawing and treat the rest as ordinary, which misreads what the package is.

Derived data

What you make from it is usually covered too

Toolpaths generated from the model. Fixture designs. Inspection programmes for the coordinate measuring machine. Setup sheets. Quality records referencing controlled dimensions. Photographs of the part.

Each of these derives from controlled information and generally carries the same treatment. Each is also created by a different person on a different system, which is how a package protected on arrival ends up distributed across the business within a fortnight.

Markings

Read them and keep them

Controlled information generally arrives marked, and the markings state what applies. They should be preserved on copies and on derived documents, and stripping them, which happens routinely when a file is converted or re-exported, removes the only indication to the next person that anything applies.

Where a file arrives unmarked and you believe it is controlled, ask the customer rather than deciding.

Where it proliferates

Five copies nobody intended

The engineer's local working copy. The quote sent to a subcontractor. The attachment in the email thread. The version on the shared drive from when the job ran before. And the one on the machine.

Each was created for a reason and none was recorded. The trace exercise in the entry on scoping finds them.

Version control

A compliance question as well as a quality one

Knowing which revision is current is ordinary manufacturing practice. Knowing where every copy of every revision is, and being able to remove them, is the compliance extension of the same discipline.

Suppliers with a mature quality system are usually most of the way there and have not connected the two.

Retention and return

What happens at the end of the programme

Contracts frequently state what must be returned or destroyed and when. That obligation applies to all the derived data as well, and almost nobody deletes the toolpaths.

Read the term, put the date in the calendar, and record what was done.

The practical control

Govern the package, not the perimeter

Because the copies proliferate through ordinary work, a control at the network edge protects little. What helps is knowing where the package is authorised to go, recording each release, and being able to enumerate copies.

That is what file-level governance means in this setting, and it is the part of the platform this site sells that maps most directly onto a requirement.

Quoting

The stage where it leaks first

A package goes to three potential subcontractors during quoting and two of them do not win the work. They now hold controlled information for a job they are not doing.

Either quote from redacted information, or place the recipients under the same terms as a supplier who wins, or retrieve it. All three are work; none is as much work as explaining the alternative.

Photographs of parts

The finished item can disclose the design

Images used for marketing, for quality records or in a customer update can reveal geometry that the package protects. Whether that matters depends on the item and it is a question worth asking before the photograph is published rather than after.

Receiving it

Log it in on arrival

What arrived, from whom, under what markings, on what date, and where it was put. Five fields, filled in once, and they are the start of the trace that everything else in this section depends on.

Suppliers who begin here find the rest of the programme considerably easier, because the question of what they hold has an answer.

The one habit worth building

Ask where a copy came from

Whenever a controlled file turns up somewhere unexpected, ask how it got there before deleting it. The answer identifies a route, and the route will be producing other copies.

Deleting without asking removes the instance and leaves the mechanism.

Also

Elsewhere in the shop floor