Technical cleaning in L4 stations (Barcelona)

Executive summary

Specialised service for urban rail infrastructure in Barcelona. In August 2025 we executed a technical cleaning plan across several L4 stations — including Trinitat Nova and Via Júlia — with scheduled work windows to avoid interference with operations. This document outlines scope, methodology, safety protocols, and results.

Client profile and context

Environment: Barcelona Metro network, Line L4 (interchange with L11 at Trinitat Nova).

Objective: raise perceived cleanliness standards, pedestrian safety, and preventive maintenance of critical surfaces (floors, tactile paving, handrails, validators, screens, entrances and concourses).

Constraints: execution during low-footfall/night windows, H&S compliance, access coordination, and incident traceability.

Project challenges

Operational milestones

— Multiple stations within a compact August schedule.

— Access and logistics on platforms with restricted circulation.

— Corporate signage and diverse fixtures (PSD/screens, escalators, lifts, validators, turnstiles, benches, bins, etc.).

Controlled risks

— Slip risk during and after mopping.

— Electrical hazards in areas with live equipment (validators, panels, lifts).

— Waste and spill management.

Scope of works

Intervened areas (typical station)

— Platforms: floors (granite/terrazzo), tactile paving, edge details and sand trays, skirtings, walls.

— Concourses: turnstiles/validators, handrails, information panels, signage, vending machines, fixtures.

— Access ways: fixed and mechanical stairs, lifts (car and exterior), corridors and ramps.

— Special elements: platform screens/PSD (where present), ducts and grilles, perimeter technical rooms (external surfaces).

Stations included

— Trinitat Nova (L4/L11) — full intervention on platforms and concourses.

— Via Júlia (L4) — intensive work on platforms and access ways.

— Maragall (L4) — intensive work on platforms and access ways.

— Guinardó (L4) — intensive work on platforms and access ways.

Methodology and protocols

Planning

— Pre-inspection and station-by-station checklist.

— Coordinated intervention windows to avoid service impact.

— Phased workflow: dust removal → descaling/soil removal → technical mopping → drying → final QA.

Techniques and tools used

— High-performance scrubber-dryers/vacuums with moisture control.

— Neutral descaling/soil-removal agent for granite/terrazzo floors and precise cleaning of tactile paving.

— Technical microfiber for stainless steel (turnstiles, handrails, doors) and glazing.— PSD/screen cleaning with anti-hazing protocol.

Health & Safety

— Delineation/barriers with well-defined pedestrian flows and temporary signage.

— Slip resistance control (R coefficient in internal post-mopping tests).

— Task-specific PPE (gloves, goggles, anti-slip footwear).— Waste management and incident traceability.

Results

— Improved cleanliness perception on platforms and concourses (internal/external satisfaction indicator: to be confirmed).

— Reduced embedded soil on tactile paving and edges (before/after comparisons: % to be confirmed).

— Zero operational incidents during work windows (to confirm).

— On-time delivery per August 2025 schedule.

Why Net i Pulit for critical

infrastructure

Key differentiators

— Experience in high-footfall environments and night windows.

— Specific protocols for tactile paving and anti-slip surfaces.

— Station-level photo and incident reporting.

— In-house uniformed team and full traceability.

Related services

— Parking/garage cleaning (in-station interiors and adjacent car parks).

— Industrial cleaning (technical rooms, shared electrical rooms).

— Glass and screen cleaning.

— Post-works cleaning in refurbishment areas.

Complementary services (cross-sell)

— Server rooms and data centres cleaning.

— Solar panel cleaning.

Do you manage stations, interchanges, or infrastructure in Barcelona? Let’s design a technical cleaning plan that won’t disrupt operations.