Features/MCP Workflows/Technical file skeleton

Technical file skeleton

The technical file is a binder in a fixed order, kept for ten years after the machine is placed on the market. This produces the binder in Annex IV order with the model-derived sections filled, the rest stubbed by name, and a completeness table on page one that shows an assessor, and the team, what is done and what is not.

File creationRead-only

The problem this solves

The technical file is usually assembled once, from whatever the folders hold the week before CE marking, and its order and completeness are discovered at the same moment an assessor discovers them. Compiled from the model, the file's structure exists from day one: every section is either generated, stubbed with the exact external artifact that belongs there, or marked authored, and the completeness table keeps the score in the open.

How it works

The binder in Annex IV order: model-derived sections filled, the rest stubbed, a completeness table on page one. Runs the risk assessment documentation, the machine description and the evidence index as sections of one document, inserts reference stubs for the sections that live outside the model, and shows an assessor, and the team, what is done and what is not.

01
Take the clause list as input
The confirmed Annex III clause list from the readiness audit, pasted below the prompt. Without it, the list is proposed and marked unconfirmed.
02
Build the completeness table
Page one: one row per Annex IV Part A item in the Regulation's order and letters, with its source (model, external system, authored), its status, and the section where it appears.
03
Generate the model-derived sections
Items (a) and (d) as the machine description workflow produces them, item (b) as the risk assessment documentation workflow, and the test reports item as the verification evidence index.
04
Stub what lives elsewhere
Drawings and schematics as a reference section over the model's linked documents plus named stubs, standards by number only with editions left to the Official Journal, and stubs for the instructions, the declaration of conformity and series-production measures.
05
Merge the annexes
One combined gap annex, deduplicated and ranked with safety gaps first, and one combined provenance annex.

Run the audits first

Regulation (EU) 2023/1230 applies from 20 January 2027, and the technical file is kept for ten years after the machine is placed on the market. This workflow compiles a document from the model; it is not a conformity assessment, and it assumes all five audits have been run and their findings acted on.

  1. 01Run the Annex III requirement gap audit first and close the gaps it finds, so the file is compiled from a model that carries the requirements the law asks for.
  2. 02Run the Annex IV readiness audit and have the team confirm the Annex III clause list: the confirmed list is this workflow's input.
  3. 03Run the hazard register integrity audit, so the item (b) section is built on a register that holds together.
  4. 04Run the verification coverage audit, so the test reports section indexes evidence rather than gaps.
  5. 05Run the architecture and interface completeness audit, so the description and operating sections have no holes to inherit.
Regulation (EU) 2023/1230 on EUR-Lex

The prompt

Compile the technical file skeleton under Regulation (EU) 2023/1230, Annex IV Part A, from the connected Dalus model. Do not modify the model.

Input: the confirmed list of applicable Annex III clauses, pasted below the prompt. If absent, propose and mark unconfirmed.

Step 1. Read the entire model.

Step 2. Completeness table on page one: one row per Annex IV Part A item in the Regulation's order and letters. Columns: item, requirement in one line, source (model, external system, authored), status (complete, partial, authored, external), and the section where it appears.

Step 3. Sections, in the Regulation's order:
(a) and (d): generate exactly as the "Machine description and operating description" workflow.
(b): generate exactly as the "Risk assessment documentation" workflow.
(c): a reference section listing every part with an Onshape link or linked document, and stubs for mechanical drawings, electrical schematics and circuit diagrams held elsewhere. Do not describe drawings the model does not reference.
(e): a reference section listing standards cited by requirements and test cases, by number only, with the note that the team must confirm editions against the Official Journal. No currency judgement.
Test reports: generate exactly as the "Verification evidence index" workflow.
Instructions for use: a stub, plus the residual risk summary from (b) as the input for the residual risks section of the instructions.
Declaration of conformity and series-production measures: stubs.

Step 4. Combined gap annex: merge the gap annexes of (a)/(d), (b) and the evidence index, deduplicate, rank safety gaps first.

Step 5. Combined provenance annex.

Output rules:
- One Word document titled "Technical Documentation Skeleton, Regulation (EU) 2023/1230 Annex IV Part A", title block with model name, date and revision placeholder, completeness table on page one.
- Regulation's item letters as section headings.
- Stubs state exactly which external artifact belongs there. No invented content anywhere.

What you get

Word document: Technical Documentation Skeleton, Regulation (EU) 2023/1230 Annex IV Part A
Completeness table on page one, one row per Annex IV item
Risk assessment, machine description and evidence index as generated sections
Named stubs for every external artifact, and the residual risk summary staged as input for the instructions
Combined gap annex, safety gaps first, and a combined provenance annex
Outputs are drafts for expert review. This workflow supports, and does not replace, qualified safety and certification engineering.

Common questions

When does Regulation (EU) 2023/1230 apply?
From 20 January 2027, when it replaces the Machinery Directive 2006/42/EC. The technical file it requires must be kept for ten years after the machine is placed on the market.
Is this a conformity assessment?
No. It compiles what the model holds into Annex IV order and stubs the rest by name. Conformity assessment remains your CE marking procedure, with a notified body where the Regulation requires one.
What goes in the stubs?
Exactly which external artifact belongs there: the mechanical drawings and schematics held in CAD and EDA, the instructions for use, the declaration of conformity, and the series-production measures. Nothing is described that the model does not reference, and nothing is invented to fill a section.
What about the standards section?
A reference section listing the standards cited by requirements and test cases, by number only, with the note that the team must confirm editions against the Official Journal. No standard text is reproduced and no currency judgement is made.