Who can enter a network manhole? Italy’s DPR 177/2011 on contractor requirements

If an inspector asked tomorrow morning who entered the manhole at address X on 12 March, with what qualification, what documented training and what equipment, how many archives would you have to search? For most underground networks the honest answer is: more than one.

The scope: when qualification is mandatory

Italian Presidential Decree 14 September 2011, no. 177 (DPR 177/2011) — published in the Official Gazette on 8 November 2011, in force from 23 November 2011 — governs, as its Article 1(1) states, “the qualification system for firms and self-employed workers operating in the field of spaces suspected of contamination or confined spaces”. Paragraph 2 sets the exact scope: it applies “to work in spaces suspected of contamination under Articles 66 and 121 of Legislative Decree 9 April 2008, no. 81, and in confined spaces under Annex IV, point 3, of the same decree”.

Article 66 of Legislative Decree 81/2008, Italy’s consolidated workplace-safety act (in force from 15 May 2008), bans “allowing workers into cesspits, sewers, flues, pits, tunnels and generally any space, vessel, duct, boiler or similar where harmful gas could be released” without first confirming there is no danger or ventilating the atmosphere. An underground, closed telecoms manhole falls within the type of space Articles 66 and 121 — the latter on gas in excavations — describe. Whether it also counts as a “confined space” under Annex IV, point 3, is for the employer’s risk assessment to decide, case by case: we have not read the full text of that annex for this piece.

One point a specification needs to settle up front: Title IV of Legislative Decree 81/2008, the one on temporary or mobile construction sites — coordinator, safety plan, preliminary notice — does not apply automatically. Article 88(2)(g-bis), in force from 18 August 2015, excludes “work on electrical systems, data networks, gas, water, air conditioning and heating that does not involve building or civil-engineering work under Annex X”. Maintenance without structural work can stay outside Title IV; excavation or building work brings it back in — a boundary we have not traced, not having read Annex X. DPR 177/2011 applies regardless: it is tied to Articles 66 and 121, not to Title IV membership.

The 30 per cent, and who can act as site supervisor

Article 2 of DPR 177/2011 lists eight requirements a firm or self-employed worker must meet to be “qualified” in this field. The most concrete, paragraph 1(c), requires staff making up “no less than 30% of the workforce” with “at least three years’ experience of work in spaces suspected of contamination or confined spaces”, hired on permanent contracts or other certified contract types. The rule adds a condition a specification should enforce first: “that experience must necessarily be held by the workers acting as site supervisor”. It is not enough for the firm as a whole to have three years in the field: whoever leads the crew must have it themselves, on record.

Training that is verified, not just declared

Letter (d) requires “information and training for all staff, including the employer if deployed”, targeted at the risk factors specific to this work and “subject to a check that it has been learned, and kept up to date”. Not a course taken once: training that is verified and refreshed. Letter (e) adds “suitable personal protective equipment, instruments and work tools” and training in their correct use; letter (g), compliance with Italy’s single contribution-regularity document, the DURC. Paragraph 2 closes a common loophole: “subcontracting is not permitted unless expressly authorised by the client employer and certified” under Title VIII, Chapter I of Legislative Decree 276/2003. A firm subcontracting without that authorisation is operating outside the rule — and the same applies to whoever, by subcontracting, has stopped knowing who is actually sent into the manhole.

A full day, before anyone goes in

Article 3 sets out what has to happen before access. Paragraph 1: every worker, including the employer if deployed, must be briefed by the client “on the characteristics of the sites where they are to work, all risks present in the spaces, including those arising from previous uses” — a briefing “carried out over a time sufficient […] and, in any case, not less than one day”. Paragraph 2: the client appoints “its own representative, with adequate competence […] who oversees and coordinates” the work to limit interference between crews. Paragraph 4: “failure to comply with this regulation removes the qualification needed to operate” — in the field generally, not just on that one site.

Why the check here is not a self-declaration

Article 26 of Legislative Decree 81/2008, in force from 11 October 2024, requires in general that the client “verifies the technical and professional suitability of contracting firms or self-employed workers”; until the implementing decree under Article 6(8)(g) is adopted, it does so through “obtaining the chamber-of-commerce registration certificate” and a self-declaration. For spaces suspected of contamination or confined spaces, that implementing decree already exists: it is DPR 177/2011. Here the check is not satisfied by a generic self-declaration: the rule itself lists what to verify — staff percentage, training with a verified-learning step, PPE, DURC — item by item, before the work is awarded.

The record that does not live in one place

The contract and any interference risk assessment sit in administration. Training records with the verified-learning step (Article 2(d)) stay with the executing firm, often never requested. The pre-access briefing record of at least a day (Article 3(1)) and the name of the client’s representative who oversaw it (Article 3(2)) end up, when they exist, in a paper site record or a file, not a searchable archive. Whether that 30% of experienced staff was actually on the crew that day — not just in the workforce declared at tender — has no box in any system we have seen. Records of the equipment and its traceability sit with the equipment hire firm, on its own renewal schedule. Site access permits sit in the council’s or the asset owner’s files, while the location of the structure stays in the as-built record, if kept up to date. Five, six places: none of which, alone, answers the opening question.

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What we do not know

This is not legal advice, nor a workplace-safety compliance opinion. We have not read the full text of Annex IV, point 3 (confined space), Annex X (building or civil-engineering work) or Annex XVII (verifying technical-professional suitability under Title IV) of Legislative Decree 81/2008: where we cite them, it is by reference, not verified content. We do not state whether a given maintenance job counts as building or civil-engineering work under Article 88(2)(g-bis): that is the employer’s assessment, case by case. We have not checked the penalty regime tied to these rules, and do not report one. Anyone writing a specification on this basis should have the current text checked by a qualified workplace-safety consultant.

Two threads, on this subject

Specifications covering access to manholes or confined spaces need the clauses Articles 2 and 3 of DPR 177/2011 already list — the percentage of experienced staff and the site supervisor’s name, training records with a verified-learning step, PPE and equipment with renewal dates, DURC, written authorisation for every subcontract — delivered before the work is awarded, not once it has started. At acceptance, the check is that the pre-access briefing record and the client representative’s name exist, tied to a specific date and job.

The contract, training records, intervention reports, access log and as-built records become, with CSIDIA, the group’s other company, a single map on which an AI checks, before the crew goes in, whether every required document for that manhole and that date exists and is still valid — so the crew works knowing who is cleared to do what. Within the client’s perimeter: on-premise, on standalone machines with no deep integration, or a dedicated cloud with a data centre in Italy, always with shared management.

The site visit, at no cost, produces the relevant list — firms qualified under DPR 177/2011, training records, access reports, DURC — with, for each item, what is on record and where it is written down today. Including the boxes that stay blank: it is yours to keep either way, whether or not we go on to work together.