CE marking of EN 1916 reinforced concrete pipes — the dossier should not take two days to add up.

The problem

Four systems, one DoP, one Friday afternoon.

The CE marking of a reinforced concrete pipe with a flexible joint under EN 1916 is not a formality — it is the manufacturer's signature stating that the pipe meets the declared performances. And yet, in most plants the dossier that supports that signature is assembled by hand every single time:

1. The steel batch certificate in a PDF that arrived from the supplier by email.
2. The concrete batch sheet in the MES — if there is an MES — or in the lab spreadsheet.
3. The crushing test in the test rig's notebook, typed into the computer whenever the quality manager has time.
4. The order and its destination in the sales team's ERP, in yet another database.

On Friday afternoon, when the DoPs for three batches have to be signed so the crane can start on Monday, the quality manager moves from tab to tab. It gets done. But the day the notified body asks for the data for the annual FPC audit, or site inspection files a claim over a manhole that has cracked three years later, the dossier has to be rebuilt from scratch. And then it is a week's work.

How it fits the IRIS system

iLEAN does not replace the quality manager — it takes the dumb work away and leaves the work that matters.

The CE marking problem is not one of regulatory knowledge: the quality manager knows EN 1916, CPR 305 and the ZA annexes inside out. The problem is information living in islands and hours burned joining by hand what today's AI joins almost for free. iLEAN acts as the putty that seals those cracks between the steel certificate, the concrete sheet, the test rig result and the ERP order — and leaves the manager with the decision that is genuinely his to sign: this DoP reflects what actually happened.

Connect reads the PDF certificates, the MES, the lab spreadsheet and the crushing rig. The agents verify and assemble the DoP in line with the standard. The person signs — Writer prepares, it never releases anything on its own.

The iLEAN pieces applied to CE marking of EN 1916 pipes:

• Writer (Agents + Central) — a set of specialized agents that live on top of your systems and assemble the DoP, the CE labeling for the inkjet, the technical dossier for the notified body and the traceability pack for site inspection, using the versioned EN 1916 regulatory template. An anchored task: the agent recontextualizes data from one system into another following the template — it invents nothing.
• Connect — captures the steel and cement PDF certificates, the MES if there is one, the lab spreadsheet, the crushing rig reports and the operator's reports by voice. Whatever arrives by email from the cement supplier reaches the dossier at second zero, without anyone having to forward anything.
• Three safety rings — the final DoP, the most sensitive piece of data, lives in the highest-criticality ring. The agents that prepare it sit in the outer ring; whatever enters the signing ring arrives verified and cryptographically signed. The human signature happens where it matters, and the system is designed so that it cannot be bypassed.

See the full IRIS architecture →

Before and after

A DoP assembled by hand vs. a DoP prepared by iLEAN Writer

Aspect	Manual assembly + Word template	With iLEAN Writer + Connect + Agents
Capture of the steel certificate	PDF saved in a folder, copied by hand	PDF read by OCR on arrival, linked to the batch
Crushing test	Notebook → spreadsheet → DoP	Read straight from the rig, linked to the batch
EN 1916 DoP template	The manager's Word file, version depends on who last updated it	Versioned template, validated against the standard in force
CE labeling on the pipe	Data keyed into the inkjet by hand	Data sent to the inkjet from the dossier
Annual FPC audit	Rebuilding folders, days of work	Dossier available per batch, hours
Site inspection claim (3 years later)	A week of searching	Minutes: pipe → batch → signed DoP

Impact estimate

Impact estimate for your plant — to be validated with your numbers.

The block below is an estimate to be validated with the specific data of your plant. We put it forward so the committee has an order of magnitude; we refine it during the diagnostic.

• A plant with several lines of reinforced concrete pipes with flexible joints, multiple diameters and series, and a per-batch DoP assembled by hand every week.
• Writer pilot on one series (OCR of certificates + integration with the MES and the crushing rig + EN 1916 DoP template + feed to the marking inkjet). First value expected within a few weeks: the first batch's DoP prepared in minutes instead of hours.
• Indicative payback between 4 and 9 months, depending on the quality manager's hourly cost, the number of DoPs per month, and the cost of the notified body's annual audit.
• The hard lever is the quality manager's hours per week recovered and the annual FPC audit resolved in hours, plus a reduction ≥ 30% in the search time triggered by a late site inspection claim.

And the quality manager's reasonable doubt

"What if the AI assembles a DoP with a wrong figure and I sign it in good faith?" — hallucination is a problem of free generation, not of anchored tasks. In tasks where the AI simply reads a PDF certificate, a concrete sheet and a test rig result and places them in the EN 1916 template, the best models brought error below 1.5% ^[1]. And even so, the DoP is never signed on its own: the agent prepares, the quality manager signs, with a visible receipt of where every figure came from. The three safety rings are there precisely for this.

^[1] OpenAI paper "Why Language Models Hallucinate", 2025 — on the reliability of AI in anchored tasks.