The Machinery Directive for Product Teams: Decisions to Make Before Design Freeze

Imagine a team building a small machine that fills and seals bags. The prototype works. The throughput is good. Purchasing is ready to order the enclosure.

Then someone tries to clear a jam.

The access panel opens easily, which is excellent for maintenance. It also opens while the mechanism is still moving. A detail that looked like a usability improvement has become a safety problem, an enclosure problem, a controls problem, and a schedule problem.

This is a hypothetical example, but it shows why the Machinery Directive belongs in the development plan. The decisions it creates are ordinary engineering decisions. Their timing determines how many other decisions you will have to undo.

For the wider process, start with EU Conformity Assessment for Machinery and Hardware Products. Here, the question is narrower: what should a product team decide before the design becomes expensive to change?

Start with the product you are actually supplying

Directive 2006/42/EC covers machinery and several related product categories; it also sets a separate procedure for partly completed machinery. Scope and exclusions are set out in Articles 1 and 2. A product's marketing name is not a reliable classification. Calling something a module, a platform, or a prototype does not settle its obligations. Read the consolidated directive, Articles 1 and 2.

Write a short scope decision describing what you supply, what it does, who will use it, and how it interacts with other equipment. Include a drawing of the boundary. If the customer supplies a conveyor or a control cabinet, say so. If your team combines several machines into a coordinated assembly, assess the interfaces and establish responsibility for the resulting assembly.

Partly completed machinery needs relevant technical documentation, assembly instructions, and a declaration of incorporation under Article 13. It does not receive CE marking under the Machinery Directive as a completed machine; other applicable legislation may have its own marking obligations. A supplier's incorporation documents are inputs to the final machine's assessment, not a substitute for it. Read Article 13.

The useful project output is a boundary everyone can work from. Without one, the mechanical engineer, controls engineer, and external consultant can each assess a different product while believing they are discussing the same machine.

Treat safety requirements as design inputs

Annex I requires risk assessment and a priority order for risk reduction: safer design first, protective measures next, then information about residual risks. Relevant essential health and safety requirements, or EHSRs, follow from the assessment. Read Annex I, General Principles and section 1.1.2.

Return to the bag-filling machine. The team needs to understand the task of clearing a jam: where the operator reaches, what continues to move, what energy remains, and what happens when power returns. A warning label cannot answer those engineering questions.

The team might change the feed geometry to reduce access to dangerous parts. It might then specify an interlocked guard and, where the risk assessment requires it, guard locking. The controls work includes defining and validating the necessary safety behaviour. The instructions explain the remaining precautions.

Those are possible responses, not a ready-made safety design. A competent assessment must determine the solution for the actual machine.

For project management, the important move is to turn each response into work with an owner and an acceptance criterion. “Improve safety” is difficult to schedule. “Define the safe access conditions for jam clearing, update the guard design, and validate the resulting safety function” tells the team what must happen.

The existing ISO 12100 article explains the assessment loop. Essential Requirements in Practice explains how its outputs become engineering requirements.

Decide the assessment route before booking tests

Under Article 12, machinery outside Annex IV uses internal checks on manufacture. For Annex IV categories, that route is available only under the specified condition of harmonised standards covering all relevant EHSRs; otherwise a notified-body route is required. Read Article 12 and Annex IV.

This decision belongs in the schedule before the team promises a release date. Record the category, the selected procedure, the reasoning, and any external involvement it requires.

A test laboratory and a notified body serve different roles. A lab may measure emissions, noise, or electrical safety and provide evidence. A notified body performs the conformity assessment tasks for which it has been designated. Some organisations do both, but a laboratory report is not automatically a notified-body assessment.

Likewise, using internal checks does not make the engineering work optional. The manufacturer still needs a defensible assessment and evidence. External expertise can help when the team lacks a particular capability, even where the selected procedure does not require a notified body.

Before commissioning work, agree the deliverable: which requirement will it address, which product configuration will it cover, and what will the report or certificate actually establish? This makes a quotation useful to the project, rather than merely reassuring.

Choose standards for the machine, then record their limits

Harmonised standards support a presumption of conformity only for the requirements they cover, when their references are published in the Official Journal. Read Article 7.

In practical terms, the team needs more than a list of standard numbers. Record the edition, its applicability to your machine, its current citation status, any restrictions, and the requirements it helps address. Use the Commission's machinery standards page to find the official references.

Then ask what is left uncovered. A standard for a particular machine type may be extremely useful while leaving an unusual accessory, operating mode, or system interface needing separate analysis.

Also check how other product legislation interacts with machinery rules. Do not automatically add the Low Voltage Directive to every powered machine: Annex I, section 1.5.1 brings its safety objectives into machinery requirements while keeping the machinery conformity obligations for electrical hazards under the Machinery Directive. Other legislation may still apply to other aspects of the product. Read section 1.5.1.

Build the evidence while the decisions are fresh

Suppose the team changes the jam-clearing design during a review. The CAD model records the new geometry. The ticket records that someone completed the task. Neither necessarily records why the solution is adequate or which validation result supports it.

Capture that connection immediately. The risk record should point to the design requirement; the requirement should point to the implementation and the evidence. Include the configuration assessed. If the mechanism or firmware changes later, the team can see which conclusions need review.

A useful working structure is:

The technical file has specified contents under Annex VII, including risk assessment documentation, design information, standards, test evidence, instructions, and a copy of the EC declaration of conformity. Retention under the directive is at least ten years after manufacture, or the last unit produced for series manufacture. Read Annex VII, Part A.

Make release a review of completed work

Article 5 sets the obligations before machinery is placed on the market or put into service: conformity with applicable EHSRs, technical file availability, instructions, the assessment procedure, the EC declaration of conformity, and CE marking. Read Article 5.

A product lead can make that review concrete. Ask the team to walk one significant hazard through to its validated solution. Ask whether the evidence covers the production configuration. Ask who can assemble the file and whether the instructions describe the machine as it will actually be used.

The answers expose dependencies that a percentage-complete dashboard can conceal. A report waiting on a redesigned guard is a schedule issue. An unresolved safety function is an engineering issue. Neither becomes solved because the declaration template is ready.

Plan separately for the January 2027 transition

As of 8 October 2026, the Machinery Directive remains the current regime. Regulation (EU) 2023/1230 applies from 20 January 2027. Its applicability turns on placing the individual product on the market or putting it into service, not the date your development project began. European Commission machinery guidance.

If your programme crosses that date, review the new requirements and assessment route now. The companion article, What Changes under the Machinery Regulation, explains the transition and the work it creates.

For organising today's project, the next step is a minimum conformity assessment workflow for a small product team. It turns these decisions into a manageable set of records and reviews.

Sources and scope

This article uses machinery as its worked example and was checked against the sources below on 8 October 2026. The project examples are illustrative; product classification and assessment require the actual design and intended use.

• Machinery Directive 2006/42/EC, consolidated text — Articles 1, 2, 5, 7, 12, and 13; Annexes I, IV, and VII.
• European Commission: Machinery — current regime, transition, and application guidance.
• Machinery Regulation (EU) 2023/1230, consolidated text — corrected application date and transitional provisions.